Re: Firebrand Picture or Drawing?

--- Inbolger@yahoogroups.com, "Howard Stephenson" <stephensonhw@...>
wrote:

>
> Firebrand appears in 30-Odd boats. Sneakeasy is in BWAOM. The two
> hulls have the same basic dimensions: 26'6" x 4'3". S'easy's hull
> appears to be a re-draw of the other one.
>
> I like the way Bolger shows the condensors recessed into the bottom
> of Firebrand's hull. R.J. Smith type III monotube boiler, spinning
> cup burner, Panther Junior 15 hp motor.
>
> Howard
>

My apologies for the error. I'm blessed to have both books and
sometimes forget which has what.

Don Schultz

Jon,

I figured you would be, but I wanted to get the idea into the thread.

V/R
Chris

-----Original Message-----
From:bolger@yahoogroups.com[mailto:bolger@yahoogroups.com]On Behalf Of
adventures_in_astrophotography
Sent: Wednesday, February 07, 2007 9:11 AM
To:bolger@yahoogroups.com
Subject: [bolger] Re: FW: Bolger's writeup about Diablo?

Hi Chris,

> If you have access to a scale that can weigh about 200 lbs, you can
> weigh each end with a fulcrum under the opposite end. The sum of the
> two weights is the weight of the hull.

Thanks, I'm familiar with the physics of weighing the hull. In my
case, I'm not interested enough in the actual weight to bother with
lifting the boat off its trailer just to weigh it. If I decide to use
this trailer for Cartoon 40 when it's ready, perhaps I'll weigh Diablo
then.

Jon Kolb
www.kolbsadventures.com/boatbuilding_index.htm

Hi Chris,

> If you have access to a scale that can weigh about 200 lbs, you can
> weigh each end with a fulcrum under the opposite end. The sum of the
> two weights is the weight of the hull.

With mine (25hp) according to your data another 10hp buys you 3 knots!! Should have bolted about 40hp on the back of it. Apparently this has been done.

"Christopher C. Wetherill" <wetherillc@...> wrote: Jon,

If you have access to a scale that can weigh about 200 lbs, you can
weigh each end with a fulcrum under the opposite end. The sum of the
two weights is the weight of the hull.

V/R
Chris

p.s. I had a small outboard runabout with a 15 hp Montgomery Ward
(OMC). With the stock propellor mounted it would not plane. With a
full-profile 10" diameter 15 foot pitch prop it would plane and do about
22 kts.

adventures_in_astrophotography wrote:

> Mine is just a guess on the weight. There's no commercial scale within
> easy range of my shop, so I don't think I'll ever be able to actually
> weigh it.

---------------------------------
Everyone is raving about the all-new Yahoo! Mail beta.

[Non-text portions of this message have been removed]

Late on the thread but our "tyson" diablo (Sabre) has dynal glass on the outside of the hull and a serious transon knee as well as a central floor member (that stopped the flex in the floor over rough water) and with 25 litres of fuel and 2 90kilo adults with the Mercury 2 stoke 25hp the top speed was still about 25 knts and it will wave jump (prop just out of the water) and turn sharply. This boat is all you need for a great cheap weapon on water. The thing is when on the plane is to get all the weight back on the stern seats, the boat will then fly across the chop and you can still have a resonably comfortable ride as you are over the pivot point.

Brian Fackrell <debarri@...> wrote: This is the first power boat I've owned. I was looking for a project to do with my sons ages 4 and 6 at the time. I had an old copy of instance boats that my brother gave me about 15 years ago. I picked out the boat that best fit the desire (Boats aren't a need though I do live on a low country island in SC) and built the thing with some help from the boys and a carpenter friend.
It might weight the 150 lbs. My wife and I can pick it up when empty with out the motor. As for turning it don't skid or skip. When you turn at top speed it leans a little to the inside of the turn and carves the turn. the angle between the bottom and bilge panels digs in to the water. It plane out to flat on the water. I now have a gps for the car and plan on clocking the mph when the weather gets warmer. I'll let you know.

----- Original Message -----
From: Kenneth Grome
To:bolger@yahoogroups.com
Sent: Monday, February 05, 2007 10:35 PM
Subject: Re: [bolger] FW: Bolger's writeup about Diablo?

> I finished one with my kids and it is far faster
> than I imagined with a 25c hp merc.

Hi Brian,

Thanks for this info, it re-confirms what others have said about relatively high speeds with relatively small engines.

If you'd like to tell me more about the boat's handling and/or other performance characteristics I'm very interested ... :)

Sincerely,
Kenneth Grome
Bagacay Boatworks
www.bagacayboatworks.com

[Non-text portions of this message have been removed]

---------------------------------
TV dinner still cooling?
Check out "Tonight's Picks" on Yahoo! TV.

[Non-text portions of this message have been removed]

John,

I'm mentioning here that I've replied to your direct email to me
because the reply will come from a different address and I don't
want your spam filter to reject it. Look out for something from me
at tpg.com.au

Howard

--- Inbolger@yahoogroups.com, "John G Johnston III" <koimnjj@...>
wrote:

>
> Hello -
>
> I am new to the Groups but I think I have looked though most of

the files

> and pictures but could not find ones for "Firebrand". My interest

is steam

> power.

Jon,

If you have access to a scale that can weigh about 200 lbs, you can
weigh each end with a fulcrum under the opposite end. The sum of the
two weights is the weight of the hull.

V/R
Chris

p.s. I had a small outboard runabout with a 15 hp Montgomery Ward
(OMC). With the stock propellor mounted it would not plane. With a
full-profile 10" diameter 15 foot pitch prop it would plane and do about
22 kts.

adventures_in_astrophotography wrote:

> Mine is just a guess on the weight. There's no commercial scale within
> easy range of my shop, so I don't think I'll ever be able to actually
> weigh it.

This is the first power boat I've owned. I was looking for a project to do with my sons ages 4 and 6 at the time. I had an old copy of instance boats that my brother gave me about 15 years ago. I picked out the boat that best fit the desire (Boats aren't a need though I do live on a low country island in SC) and built the thing with some help from the boys and a carpenter friend.
It might weight the 150 lbs. My wife and I can pick it up when empty with out the motor. As for turning it don't skid or skip. When you turn at top speed it leans a little to the inside of the turn and carves the turn. the angle between the bottom and bilge panels digs in to the water. It plane out to flat on the water. I now have a gps for the car and plan on clocking the mph when the weather gets warmer. I'll let you know.

----- Original Message -----
From: Kenneth Grome
To:bolger@yahoogroups.com
Sent: Monday, February 05, 2007 10:35 PM
Subject: Re: [bolger] FW: Bolger's writeup about Diablo?

> I finished one with my kids and it is far faster
> than I imagined with a 25c hp merc.

Hi Brian,

Thanks for this info, it re-confirms what others have said about relatively high speeds with relatively small engines.

If you'd like to tell me more about the boat's handling and/or other performance characteristics I'm very interested ... :)

Sincerely,
Kenneth Grome
Bagacay Boatworks
www.bagacayboatworks.com

[Non-text portions of this message have been removed]

Firebrand appears in 30-Odd boats. Sneakeasy is in BWAOM. The two
hulls have the same basic dimensions: 26'6" x 4'3". S'easy's hull
appears to be a re-draw of the other one.

I like the way Bolger shows the condensors recessed into the bottom
of Firebrand's hull. R.J. Smith type III monotube boiler, spinning
cup burner, Panther Junior 15 hp motor.

Howard

--- Inbolger@yahoogroups.com, "donschultz8275" <donschultz@...>
wrote:

>
> --- Inbolger@yahoogroups.com, "John G Johnston III" <koimnjj@>
> wrote:
> >
> > Hello -
> >
> > I am new to the Groups but I think I have looked though most of

the

> files
> > and pictures but could not find ones for "Firebrand". My

interest is

> steam
> > power.
>
>
> Firebrand appears in "Boats with an Open Mind" which is available

from

> Amazon and others so I don't think it would be polite to scan

them.

>
> The hull is not to interesting to me. Really pretty much

Sneakeasy as

> I recall.
>
> Don Schultz
>

> Firebrand appears in "Boats with an Open Mind" which is available from
> Amazon and others so I don't think it would be polite to scan them.

Amazon has a 'look inside this book' feature, so you can actually read
the chapter on Firebrand directly from the Amazon.com website, polite
or not <g>.

--- Inbolger@yahoogroups.com, "John G Johnston III" <koimnjj@...>
wrote:

>
> Hello -
>
> I am new to the Groups but I think I have looked though most of the

files

> and pictures but could not find ones for "Firebrand". My interest is

steam

> power.

Firebrand appears in "Boats with an Open Mind" which is available from
Amazon and others so I don't think it would be polite to scan them.

The hull is not to interesting to me. Really pretty much Sneakeasy as
I recall.

Don Schultz

You are down to close to 7 hp with the altitude, that isn't much for a
Diablo.

HJ

adventures_in_astrophotography wrote:

> Hi Bruce,
>
>
>> Anybody care to guess what the Diablo would perform like with my 10
>>
> HP
>
>> honda 4 stroke? I have space on my Micro trailer begging for a new
>> boat, (now with my Micro in a marina berth) .
>>
>
> I have that exact engine on my Diablo. Here's an excerpt of what I
> wrote to Kevin:
>
> A 9.9 hp 4-stroke is not enough to plane this boat with me, my 60lb
> dog, gear, and gas. This engine would be marginal to plane the boat
> even with a lighter load, but it's never going to do it at 8600' feet
> elevation where I use mine. It's probably only making 8 or 9 hp at
> that elevation, even with the proper carburetor jets for 5000+'. I
> think 20 hp would be about perfect for my needs, but I already had
> the 9.9 for my FastBrick project.
>
> The boat handles very well. It turns quickly and predictably,
> banking turns smoothly at all speeds (that I can get up to) with no
> surprises. Turning radius is very tight, good for maneuvering around
> the ramp when it's crowded.
>
> The ride is smooth and dry at all speeds, but I can only get up to
> about 10 mph wide open on GPS, since she just won't get up and really
> take off on a plane. That's obviously higher than displacement hull
> speed for a 15-footer, but...
>
> My boat seems stern-heavy. Weight is definitely concentrated there,
> with the heavy 4-stroke, my 195 lb ass, and 5 gallons of gas. I've
> notched the prop all the way "forward" to try to counteract this next
> time out. Nevertheless, my boat always seems to be trying to climb
> out of a hole at max throttle.
>
> Jon Kolb
> www.kolbsadventures.com/boatbuilding_index.htm
>
>
>
>

> My Diablo planes with two aboard (app 300lbs) with a 9.9 Johnson 2
> stroke. 1990 model.
>
> David Jost

Interesting. As my trailer is long enough to handle a boat longer
than 15 feet, stretching the Diablo concept to 20 feet might improve
ability to plane even more. I recall that Slicer is a planing shape,
using only a 10HP motor. Pardon me for dreaming, but I have long
wished for a folding-Slicer, like a Folding Schooner.

Hello -

I am new to the Groups but I think I have looked though most of the files
and pictures but could not find ones for "Firebrand". My interest is steam
power.

Have I missed them?

Thanks!

- John

My Diablo planes with two aboard (app 300lbs) with a 9.9 Johnson 2
stroke. 1990 model.

David Jost

> Anybody care to guess what the Diablo would perform like with my 10 HP
> honda 4 stroke? I have space on my Micro trailer begging for a new
> boat, (now with my Micro in a marina berth) .

8-10 knots depending on winds, tides and waves, one person
http://www.promax.com.ar/diablo

Regards, Máximo.

Hi Kenneth,

In a reply to Bruce, I mistakenly referred to you as Kevin for some
reason. Please accept my apology for the oversight.

...snip...

> Note that Jon also said he thinks his Diablo weights 250 - 300 pounds
> whereas the guy who wrote the instantboats letter said his Diablo
> weighs only 150 pounds. That's a huge weight difference on such a
> small boat, and it may account for the great performance of the 150
> pound Diablo noted above.

Mine is just a guess on the weight. There's no commercial scale within
easy range of my shop, so I don't think I'll ever be able to actually
weigh it. Adding up myself, the dog, the motor, and the gas and gear
comes out to over 350 lbs. So, even if the boat only weighed 150 lbs
(which seems really light to me, too), it wouldn't meet the old "1 hp
for every 50 lbs of boat weight" rule of thumb for planing with my
motor running under spec due to elevation.

The owner's manual indicates that the motor will lose 3.5% of its power
for every 1000 feet above MSL, or above 5000' if it's carb has been re-
jetted for high altitude (at least that's how I interpreted the
manual). At the lake's elevation of 8600', I figure I'm losing 14% or
so, since I think you lose a little just from re-jetting.

> If anyone here has a copy of "Build the New Instant Boats" can you
> look up the estimated finish weight of Diablo and post it here? I'm
> curious to know what the designer says this boat ought to weigh when
> built to plans ... and 150 pounds still seems way too light to me.

I don't recall seeing the weight mentioned in the book.

Jon Kolb
www.kolbsadventures.com/boatbuilding_index.htm

Hi Bruce,

> Anybody care to guess what the Diablo would perform like with my 10

> honda 4 stroke? I have space on my Micro trailer begging for a new
> boat, (now with my Micro in a marina berth) .

I have that exact engine on my Diablo. Here's an excerpt of what I
wrote to Kevin:

A 9.9 hp 4-stroke is not enough to plane this boat with me, my 60lb
dog, gear, and gas. This engine would be marginal to plane the boat
even with a lighter load, but it's never going to do it at 8600' feet
elevation where I use mine. It's probably only making 8 or 9 hp at
that elevation, even with the proper carburetor jets for 5000+'. I
think 20 hp would be about perfect for my needs, but I already had
the 9.9 for my FastBrick project.

The boat handles very well. It turns quickly and predictably,
banking turns smoothly at all speeds (that I can get up to) with no
surprises. Turning radius is very tight, good for maneuvering around
the ramp when it's crowded.

The ride is smooth and dry at all speeds, but I can only get up to
about 10 mph wide open on GPS, since she just won't get up and really
take off on a plane. That's obviously higher than displacement hull
speed for a 15-footer, but...

My boat seems stern-heavy. Weight is definitely concentrated there,
with the heavy 4-stroke, my 195 lb ass, and 5 gallons of gas. I've
notched the prop all the way "forward" to try to counteract this next
time out. Nevertheless, my boat always seems to be trying to climb
out of a hole at max throttle.

Jon Kolb
www.kolbsadventures.com/boatbuilding_index.htm

Okay Jon, you asked for it...
Video of my Diablo when first built. Used a pair of 5.5 hp Pacer
Trash pumps for power.
http://video.google.com/videoplay?docid=-8688147525063842552or
http://tinyurl.com/2ve46f
I have since removed the pumps in favor of outboard. Water pumps were
fun, but cumbersome to operate and poor performance.

JetMan
[Dan]

--- Inbolger@yahoogroups.com, "Jon & Wanda(Tink)" <windyjon@...>
wrote:

>
> Now Dan you need to show them it with the trash jets and the jet
> engen you wanted to put in it.
>
> Jon
>
> --- Inbolger@yahoogroups.com, Toolman84@ wrote:
> >
> >
> > Ahoy all,
> >
> > Diablo was the first boat I built. This link is a 34 second video
> of my
> > friend and I playing in the Columbia River near Portland OR.
> >http://video.google.com/videoplay?docid=2002638941940391367
> > We are both built like the "before" guys you see in the weight

loss

> ads,
> > and this boat handles like a dream. I can make very sharp turns

> full
> > throttle with my 1957 Evinrude 18, and all I can say is HOLD ON!
> Boat
> > does not skid (I've tried) in hard turns, just bites the water.
> Can't
> > wait to try it with my home built vee twin 25hp four stroke

Briggs &

> > Johnson, more on that project some other day.
> >
> > Dan, near Portland OR
> > a.k.a. JetMan
>

> FWIW, the displacement at the waterline shown in this picture is 800
> lbs, and as you see, the boat is just beginning to get wet.
>
>http://hallman.org/bolger/Diablo/Diablo.png

Hi Bruce,

The last picture on this page confirms your waterline weight info ...

There are 4 full-grown men in this Diablo and altogether they weigh about 850 pounds. Just look at how much of the aft bottom is still above the waterline!

http://www.diabloboat.homestead.com/launch.html

If the total weight of Diablo plus passengers is 1000+ pounds in this picture, the boat looks like it could haul another 1000 pounds safely in the current conditions before the chines touch the water ... :)

Sincerely,
Kenneth Grome
Bagacay Boatworks
www.bagacayboatworks.com

Now Dan you need to show them it with the trash jets and the jet
engen you wanted to put in it.

Jon

--- Inbolger@yahoogroups.com, Toolman84@... wrote:
>
>
> Ahoy all,
>
> Diablo was the first boat I built. This link is a 34 second video
of my
> friend and I playing in the Columbia River near Portland OR.
>http://video.google.com/videoplay?docid=2002638941940391367
> We are both built like the "before" guys you see in the weight loss
ads,
> and this boat handles like a dream. I can make very sharp turns at
full
> throttle with my 1957 Evinrude 18, and all I can say is HOLD ON!
Boat
> does not skid (I've tried) in hard turns, just bites the water.
Can't
> wait to try it with my home built vee twin 25hp four stroke Briggs &
> Johnson, more on that project some other day.
>
> Dan, near Portland OR
> a.k.a. JetMan

Ahoy all,

Diablo was the first boat I built. This link is a 34 second video of my
friend and I playing in the Columbia River near Portland OR.
http://video.google.com/videoplay?docid=2002638941940391367
We are both built like the "before" guys you see in the weight loss ads,
and this boat handles like a dream. I can make very sharp turns at full
throttle with my 1957 Evinrude 18, and all I can say is HOLD ON! Boat
does not skid (I've tried) in hard turns, just bites the water. Can't
wait to try it with my home built vee twin 25hp four stroke Briggs &
Johnson, more on that project some other day.

Dan, near Portland OR
a.k.a. JetMan

Re: FW: Bolger's writeup about Diablo?
Posted by: "Kenneth Grome"bagacayboatworks@...kennethgrome
Mon Feb 5, 2007 7:32 pm (PST)

> Diablo goes really well with a 25hp 2 stroke
> Mercury, just over 25 knots on the GPS. Also
> will turn quickly on calm water at full throttle.

Thanks for confirming the fast turning Dominic, this is one feature I'm
looking for -- not only fast but also stable and secure turning as well
...

When you turn at full throttle on calm water does it feel safe and
secure? Does the boat feel like it is sliding or skidding around the
corner, or does it grab and hold the water as it turns without much (or
any) skidding?

Does the boat ever feel like it might 'trip' and flip over when you turn
it very fast?

Thanks!

Sincerely,
Kenneth Grome
Bagacay Boatworks
www.bagacayboatworks.com

[Non-text portions of this message have been removed]

> Anybody care to guess what the Diablo would perform

like with my 10 HP honda 4 stroke? I have space on my
Micro trailer begging for a new boat, (now with my
Micro in a marina berth) .

Hi Bruce,

Your Micro looks great in its new berth! But hey, don't you ever get tired of building new boats?

:)

The guy who wrote the story about his 150 pound Diablo on the instantboats.com website says his boat planed on very old 5 HP and 6 HP outboards. I do not necessarily believe everything he said myself, and so far he has not replied to my private email, but his tests intrigued me nevertheless:

1928 Johnson 6 hp
- quickly on plane to about 12-14 mph

1955 Johnson 5 hp
- planed with Stephanie (about 120 lb.)

1939 Evinrude Speeditwin 23.5 Hp
- fast, about 30 mph

1953 Mark 20 Mercury
- very quick and fast, 32 mph

1955 Johnson 10
- 20 mph. Will hold plane with three large adult men to 16 mph

1956 Evinrude 15
- Sweet set up. Can do about 25 mph. Will plane with large load.

Then again, Jon Kolb wrote to me and said this about his attempt to get his Diablo to plane while using a 9.9 HP 4-stroke was less than successful:

> A 9.9 hp 4-stroke is not enough to plane this boat
> with me, my 60lb dog, gear, and gas. This engine
> would be marginal to plane the boat even with a
> lighter load, but it's never going to do it at 8600' feet
> elevation where I use mine. It's probably only
> making 8 or 9 hp at that elevation, even with the
> proper carburetor jets for 5000+'. I think 20 hp
> would be about perfect for my needs, but I already
> had the 9.9 for my FastBrick project.

I suspect that if Jon had done his testing at sea level the boat might plane with a light load. Then again this is just a theory based on my 'wishful thinking'.

Note that Jon also said he thinks his Diablo weights 250 - 300 pounds whereas the guy who wrote the instantboats letter said his Diablo weighs only 150 pounds. That's a huge weight difference on such a small boat, and it may account for the great performance of the 150 pound Diablo noted above.

If anyone here has a copy of "Build the New Instant Boats" can you look up the estimated finish weight of Diablo and post it here? I'm curious to know what the designer says this boat ought to weigh when built to plans ... and 150 pounds still seems way too light to me.

Sincerely,
Kenneth Grome
Bagacay Boatworks
www.bagacayboatworks.com

____________________________________________________________
GET FREE 5GB EMAIL - Check out spam free email with many cool features!
Visithttp://www.inbox.com/emailto find out more!

Not as well as with a 15hp, but still works fine, particularly if there is
only one person in it.

Stuart.

> From: Bruce Hallman <bruce@...>
> Reply-To:bolger@yahoogroups.com
> Date: Mon, 05 Feb 2007 19:50:47 -0800
> To:bolger@yahoogroups.com
> Subject: Re: [bolger] FW: Bolger's writeup about Diablo?
>
> Anybody care to guess what the Diablo would perform like with my 10 HP
> honda 4 stroke? I have space on my Micro trailer begging for a new
> boat, (now with my Micro in a marina berth) .
>
>
> Bolger rules!!!
> - NO "GO AWAY SPAMMER!" posts!!! Please!
> - no cursing, flaming, trolling, spamming, respamming, or flogging dead horses
> - stay on topic, stay on thread, punctuate, no 'Ed, thanks, Fred' posts
> - Pls add your comments at the TOP, SIGN your posts, and snip away
> - Plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA, 01930, Fax:
> (978) 282-1349
> - Unsubscribe:bolger-unsubscribe@yahoogroups.com
> - Open discussion:bolger_coffee_lounge-subscribe@yahoogroups.com
> Yahoo! Groups Links
>
>
>

Anybody care to guess what the Diablo would perform like with my 10 HP
honda 4 stroke? I have space on my Micro trailer begging for a new
boat, (now with my Micro in a marina berth) .

> I finished one with my kids and it is far faster
> than I imagined with a 25c hp merc.

Hi Brian,

Thanks for this info, it re-confirms what others have said about relatively high speeds with relatively small engines.

If you'd like to tell me more about the boat's handling and/or other performance characteristics I'm very interested ... :)

Sincerely,
Kenneth Grome
Bagacay Boatworks
www.bagacayboatworks.com

> Diablo goes really well with a 25hp 2 stroke
> Mercury, just over 25 knots on the GPS. Also
> will turn quickly on calm water at full throttle.

Thanks for confirming the fast turning Dominic, this is one feature I'm looking for -- not only fast but also stable and secure turning as well ...

When you turn at full throttle on calm water does it feel safe and secure? Does the boat feel like it is sliding or skidding around the corner, or does it grab and hold the water as it turns without much (or any) skidding?

Does the boat ever feel like it might 'trip' and flip over when you turn it very fast?

Thanks!

Sincerely,
Kenneth Grome
Bagacay Boatworks
www.bagacayboatworks.com

> Diablo can be found in Harold Payson's "Build
> the New Instant Boats". You could build it from
> the plans and instructions in the book.

Thanks Howard, two others have said the same thing so it looks like I do not have to buy a separate set of plans -- as long as I buy the book -- which I am likely to do later this week.

Sincerely,
Kenneth Grome
Bagacay Boatworks
www.bagacayboatworks.com

____________________________________________________________
GET FREE 5GB EMAIL - Check out spam free email with many cool features!
Visithttp://www.inbox.com/emailto find out more!

I finished one with my kids and it is far faster than I imagined with a 25c hp merc.
Brian

----- Original Message -----
From: Kenneth Grome
To:bolger@yahoogroups.com
Sent: Monday, February 05, 2007 2:09 AM
Subject: [bolger] FW: Bolger's writeup about Diablo?

I've just read an interesting letter from a guy who supposedly works (or worked) in the boat repair industry, built a Diablo himself, and has nothing but glowing things to say about it. For example:

> Diablo is easily the smoothest riding, fastest,
> and best turning boat in her class that I've
> ever encountered.

I looked in BWAOM but Diablo is not in there. Does anyone have a copy of Bolger's writeup about Diablo that he/she could send me? I'm curious now about the design brief that Bolger wrote himself ...

Sincerely,
Kenneth Grome
Bagacay Boatworks
www.bagacayboatworks.com

[Non-text portions of this message have been removed]

Payson's spread in the latest MAIB where he was the featured plans
person said that the Diablo is his number one selling design if I read
it right.

HJ

Dominic tyson wrote:

> Diablo goes really well with a 25hp 2 stroke Mercury, just over 25 knots on the GPS. Also will turn quickly on calm water at full throttle.
>
> Howard Stephenson <stephensonhw@...> wrote: Diablo can be found in Harold Payson's "Build the New Instant Boats".
> You could build it from the plans and instructions in the book. There
> is nothing there that indicates PCB's views on the design.
>
> Howard
>
> --- Inbolger@yahoogroups.com, Kenneth Grome <bagacayboatworks@...>
> wrote:
>
>
>> I looked in BWAOM but Diablo is not in there. Does anyone have a
>>
> copy of Bolger's writeup about Diablo that he/she could send me? I'm
> curious now about the design brief that Bolger wrote himself ...
>
>
>

Diablo goes really well with a 25hp 2 stroke Mercury, just over 25 knots on the GPS. Also will turn quickly on calm water at full throttle.

Howard Stephenson <stephensonhw@...> wrote: Diablo can be found in Harold Payson's "Build the New Instant Boats".
You could build it from the plans and instructions in the book. There
is nothing there that indicates PCB's views on the design.

Howard

--- Inbolger@yahoogroups.com, Kenneth Grome <bagacayboatworks@...>
wrote:

> I looked in BWAOM but Diablo is not in there. Does anyone have a

copy of Bolger's writeup about Diablo that he/she could send me? I'm
curious now about the design brief that Bolger wrote himself ...

---------------------------------
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[Non-text portions of this message have been removed]

Diablo can be found in Harold Payson's "Build the New Instant Boats".
You could build it from the plans and instructions in the book. There
is nothing there that indicates PCB's views on the design.

Howard

--- Inbolger@yahoogroups.com, Kenneth Grome <bagacayboatworks@...>
wrote:

> I looked in BWAOM but Diablo is not in there. Does anyone have a

copy of Bolger's writeup about Diablo that he/she could send me? I'm
curious now about the design brief that Bolger wrote himself ...

>. It also has tremendous load
> carrying ability I have seen 8 people in one safely.

FWIW, the displacement at the waterline shown in this picture is 800
lbs, and as you see, the boat is just beginning to get wet.

http://hallman.org/bolger/Diablo/Diablo.png

Thats nothing......I've had 2 adults and 4 medium sized kids in my Skimmer...........what a load........Robb

----- Original Message -----
From: mkriley48
To:bolger@yahoogroups.com
Sent: Monday, February 05, 2007 3:01 PM
Subject: [bolger] Re: FW: Bolger's writeup about Diablo?

I'll second the remarks about the diablo. It also has tremendous load
carrying ability I have seen 8 people in one safely. I think this is
the most versatile boat for a 15 horse engine going.
mike riley

--- Inbolger@yahoogroups.com, Kenneth Grome <bagacayboatworks@...> wrote:
>
> I've just read an interesting letter from a guy who supposedly works
(or worked) in the boat repair industry, built a Diablo himself, and
has nothing but glowing things to say about it. For example:
>
> > Diablo is easily the smoothest riding, fastest,
> > and best turning boat in her class that I've
> > ever encountered.
>
> I looked in BWAOM but Diablo is not in there. Does anyone have a
copy of Bolger's writeup about Diablo that he/she could send me? I'm
curious now about the design brief that Bolger wrote himself ...
>
> Sincerely,
> Kenneth Grome
> Bagacay Boatworks
> www.bagacayboatworks.com
>

[Non-text portions of this message have been removed]

I'll second the remarks about the diablo. It also has tremendous load
carrying ability I have seen 8 people in one safely. I think this is
the most versatile boat for a 15 horse engine going.
mike riley

--- Inbolger@yahoogroups.com, Kenneth Grome <bagacayboatworks@...> wrote:
>
> I've just read an interesting letter from a guy who supposedly works
(or worked) in the boat repair industry, built a Diablo himself, and
has nothing but glowing things to say about it. For example:
>
> > Diablo is easily the smoothest riding, fastest,
> > and best turning boat in her class that I've
> > ever encountered.
>
> I looked in BWAOM but Diablo is not in there. Does anyone have a
copy of Bolger's writeup about Diablo that he/she could send me? I'm
curious now about the design brief that Bolger wrote himself ...
>
> Sincerely,
> Kenneth Grome
> Bagacay Boatworks
> www.bagacayboatworks.com
>

Here is a computer model study I made of Diablo, using the program Freeship.

Freeship file:

http://hallman.org/bolger/Diablo/Diablo.fbm

And a 3D image file:

http://hallman.org/bolger/Diablo/Diablo.png

A couple things I notice... the bottom panel, nice and flat, no
wonder that boat is reported to plane nicely. Indeed the bottom kind
of looks like a 'shoe'. Also, the location of the buoyancy chambers
are sized and positioned just so to float the boat and the weight of
the motor, should they be needed.

Also, as to the Bolger writeup, I don't recall one. (I only remember
the Payson writings, pt 1 and pt 2 in two 1983 issues of Small Boat
Journal, 1983.) Although, there just *has* to be a real PCB writeup
in an old issue of Messing About in Boats, anybody know which issue?

I've just read an interesting letter from a guy who supposedly works (or worked) in the boat repair industry, built a Diablo himself, and has nothing but glowing things to say about it. For example:

> Diablo is easily the smoothest riding, fastest,
> and best turning boat in her class that I've
> ever encountered.

I looked in BWAOM but Diablo is not in there. Does anyone have a copy of Bolger's writeup about Diablo that he/she could send me? I'm curious now about the design brief that Bolger wrote himself ...

Sincerely,
Kenneth Grome
Bagacay Boatworks
www.bagacayboatworks.com