Re: Air Cooled Engines
I checked into useing a hydrostatic transaxle and found out they are
only able to take half the power full time as the other half the power
is to run the implaments. running full HP through them all the time
wears them out faster. The best I have heard of was the Hudro wheel
motors and stearing off a small forklift.
Jon
only able to take half the power full time as the other half the power
is to run the implaments. running full HP through them all the time
wears them out faster. The best I have heard of was the Hudro wheel
motors and stearing off a small forklift.
Jon
--- Inbolger@yahoogroups.com, "Bill Hamm" <griff10us@y...> wrote:
> Can be done with V belts relatively easily using idler pulleys to
> tension the direction you want to go. Another source could be garden
> tractor transmissions. Lots of dead garden tractors around.
>
> Bill H.
>
> > All this talk of Bonefish and low-powered sharpie hulls has me
> > wondering again: What can be done for a low-cost, low-weight
> > transmission to use a small air-cooled engine in a boat? Just about
> > everything I find either costs as much as the whole rest of the
boat,
> > weighs as much as the whole rest of the boat, or both!
> >
> > Ideas, please? Preferably with reverse, too ;-)
> >
> > Thanks,
> > RonB
This is easy to do, but the efficency stinks. Parker and other
companies do make what you want. If you look up a Parket distributor,
you'll find some sales guy a big enough sucker to help you out for a
cup of coffee. You might pursue companies that refurbish heavy
industrial equipment and find used equipment for pennies on the dollar.
Don
companies do make what you want. If you look up a Parket distributor,
you'll find some sales guy a big enough sucker to help you out for a
cup of coffee. You might pursue companies that refurbish heavy
industrial equipment and find used equipment for pennies on the dollar.
Don
--- Inbolger@yahoogroups.com, ANDREW AIREY <andyairey@y...> wrote:
> How about a pair of hydraulic pump motors from,say,old
> forktrucks.A hydraulic pump will work as a motor but
> you may have to do a couple of mods to relieve
> pressure on the bearing seals
> Cheers
> Andy Airey
In Bonefish, no reverse is used. An electric clutch is used on the
output shaft. These are commonly used for PTO to accessories like
the mower deck.
IMO, I'd rather do what Bolger suggests, just use a trolling motor
for reverse and close slow speed maneuvering. This way a simple
single V belt drives the main shaft from the clutch pulley. I can
even mess with pulley sizes to optimize engine/prop rpm.
It is easy to find 30 year old plus Gilson, Simplicity, and
WheelHorse lawn tractors with very solid 3-4 speed transmissions,
with reverse. I've got such a Gilson, and a solid 13hp B&S. It
includes a good v belt based manual clutch. If I weld the
differential spider gears, I can drive a propeller shaft through one
of the axles. But rigging remote gear shifting, and getting the
trans located well in the hull will be interesting.
Another option would be to cobble together a smaller electric motor,
IE an automobile starter for a big V8 with another clutch, maybe a
gear mounted on the main shaft, and use that for reversing the prop
with the main engine clutch disengaged. This would improve the looks
at least, but performance may or may not be adequate.
Yet another choice is an automotive manual trans from a smaller car.
I remember the 4 speed from an old Volvo being only about 14" long
total. When you put side loads on the trans input shaft with a belt,
you'll need to rig up a bearing on the pilot end of the shaft to help
support it. IMO lots of weight and fabrication, including the
shifter mechanism.
output shaft. These are commonly used for PTO to accessories like
the mower deck.
IMO, I'd rather do what Bolger suggests, just use a trolling motor
for reverse and close slow speed maneuvering. This way a simple
single V belt drives the main shaft from the clutch pulley. I can
even mess with pulley sizes to optimize engine/prop rpm.
It is easy to find 30 year old plus Gilson, Simplicity, and
WheelHorse lawn tractors with very solid 3-4 speed transmissions,
with reverse. I've got such a Gilson, and a solid 13hp B&S. It
includes a good v belt based manual clutch. If I weld the
differential spider gears, I can drive a propeller shaft through one
of the axles. But rigging remote gear shifting, and getting the
trans located well in the hull will be interesting.
Another option would be to cobble together a smaller electric motor,
IE an automobile starter for a big V8 with another clutch, maybe a
gear mounted on the main shaft, and use that for reversing the prop
with the main engine clutch disengaged. This would improve the looks
at least, but performance may or may not be adequate.
Yet another choice is an automotive manual trans from a smaller car.
I remember the 4 speed from an old Volvo being only about 14" long
total. When you put side loads on the trans input shaft with a belt,
you'll need to rig up a bearing on the pilot end of the shaft to help
support it. IMO lots of weight and fabrication, including the
shifter mechanism.
--- Inbolger@yahoogroups.com, "ronatfbkdotcom" <ronb_5@e...> wrote:
> All this talk of Bonefish and low-powered sharpie hulls has me
> wondering again: What can be done for a low-cost, low-weight
> transmission to use a small air-cooled engine in a boat?
.........
> Ideas, please? Preferably with reverse, too ;-)
>
> Thanks,
> RonB
Can be done with V belts relatively easily using idler pulleys to
tension the direction you want to go. Another source could be garden
tractor transmissions. Lots of dead garden tractors around.
Bill H.
tension the direction you want to go. Another source could be garden
tractor transmissions. Lots of dead garden tractors around.
Bill H.
> All this talk of Bonefish and low-powered sharpie hulls has me
> wondering again: What can be done for a low-cost, low-weight
> transmission to use a small air-cooled engine in a boat? Just about
> everything I find either costs as much as the whole rest of the boat,
> weighs as much as the whole rest of the boat, or both!
>
> Ideas, please? Preferably with reverse, too ;-)
>
> Thanks,
> RonB
How about a pair of hydraulic pump motors from,say,old
forktrucks.A hydraulic pump will work as a motor but
you may have to do a couple of mods to relieve
pressure on the bearing seals
Cheers
Andy Airey
--- ronatfbkdotcom <ronb_5@...> wrote:
---------------------------------
All this talk of Bonefish and low-powered sharpie
hulls has me
wondering again: What can be done for a low-cost,
low-weight
transmission to use a small air-cooled engine in a
boat? Just about
everything I find either costs as much as the whole
rest of the boat,
weighs as much as the whole rest of the boat, or both!
Ideas, please? Preferably with reverse, too ;-)
Thanks,
RonB
Bolger rules!!!
- no cursing, flaming, trolling, spamming, 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
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forktrucks.A hydraulic pump will work as a motor but
you may have to do a couple of mods to relieve
pressure on the bearing seals
Cheers
Andy Airey
--- ronatfbkdotcom <ronb_5@...> wrote:
---------------------------------
All this talk of Bonefish and low-powered sharpie
hulls has me
wondering again: What can be done for a low-cost,
low-weight
transmission to use a small air-cooled engine in a
boat? Just about
everything I find either costs as much as the whole
rest of the boat,
weighs as much as the whole rest of the boat, or both!
Ideas, please? Preferably with reverse, too ;-)
Thanks,
RonB
Bolger rules!!!
- no cursing, flaming, trolling, spamming, 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
SPONSORED LINKS
Boating magazine
Boating safety
Alaska outdoors
Great outdoors
---------------------------------
YAHOO! GROUPS LINKS
Visit your group "bolger" on the web.
To unsubscribe from this group, send an email to:
bolger-unsubscribe@yahoogroups.com
Your use of Yahoo! Groups is subject to the Yahoo!
Terms of Service.
---------------------------------
___________________________________________________________
Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemailhttp://uk.messenger.yahoo.com
All this talk of Bonefish and low-powered sharpie hulls has me
wondering again: What can be done for a low-cost, low-weight
transmission to use a small air-cooled engine in a boat? Just about
everything I find either costs as much as the whole rest of the boat,
weighs as much as the whole rest of the boat, or both!
Ideas, please? Preferably with reverse, too ;-)
Thanks,
RonB
wondering again: What can be done for a low-cost, low-weight
transmission to use a small air-cooled engine in a boat? Just about
everything I find either costs as much as the whole rest of the boat,
weighs as much as the whole rest of the boat, or both!
Ideas, please? Preferably with reverse, too ;-)
Thanks,
RonB