628Re: Small air cooled inboard motors
- Apr 8, 2005Intersting line of engines. I notice that the 1B40 model is available
with a counter rotating balancing option which might be useful. Also,
the axial load on the PTO shaft was given as 1200 newtons. If I
converted correctly, this is 269.7 pounds. I cannot imagine the prop
and shaft loading coming close to this figure, but I don't know how to
caculate the force either. And, who would want to drive the prop at
1:1 with direct hookup?
The weights are extremely low and the allowable tilt angle is
generous. The agriculture units I have looked at here in Nicaragua are
much heavier. What is the availability and cost of these engines
Still searching for a suitable boat to build here for Lake Nicaragua!
--- In AtkinBoats@yahoogroups.com, "dmede808" <dmede808@y...> wrote:
> No problem Mike. I appreciate the help. I do know about the thrust
bearing issue. There
> is a load spec for the PTO bearing on the HATZ but I dont have any
idea what the prop and
> shaft thrust load will be, or how to calculate it.
> HATZ has several gearbox options for those motors and I may use one
for gear reduction
> and reverse gearing if possible. Hopefully that gearbox will be
able to take the thrust load
> but if not I'll have to rig an inline thrust bearing. Mcmaster Carr
has pillow-block bearings
> that may do the job.
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