Subject: underdrive pulley
From: Rotary Engine
Date: 2/23/2007, 9:59 AM
To: AARotary Engine




>> >>> Hi,
>> >>>
>> >>>
>> >>> Some questions:
>> >>>
>> >>> Any advantage to using an under drive pulley in an aircraft
>> >>> installation?  Would it help with the higher constant RPM's I will be
>> >>> running?
>> >>>
>> >>> I have to move my alternator on my Renesis engine to the side, rather
>> >>> than have it on top as it comes, when I do so I will have an
>> >>> interference problem with the pulley belt and the crank angle sensor.
>> >>> Can I use washers or a plate to move all the pulleys out to eliminate
>> >>> the problem? Would there be any concerns doing this?
>> >>>
>> >>> Does anyone know of a good oil filter relocation kit for the Renesis
>> >>> engine?
>> >>>
>> >>>
>> >>> Thanks,
>> >>> K11
>> >>>
>> >>> Paul Kvernplassen
>> >>> Building a GlaStar in Alaska
>> >>> Paul
>>
>> Paul also try to fit a idler pulley when you move the
>> alternator. That will give you more wrap and you won't need
>> to space out the pulleys.
>>
>> Paul Lamar ...No rotor no motor.
>
>
> Paul, an idler pulley sounds like a good idea....  do you have a
> suggestion for where in the loop it would be best?  Also for Ian.... I
> have not seen side mounts for the Renesis.  I have only seen it for the
> RX-7.  I don't know if it would be easier to modify one of those or try
> and build one myself.
>
> Thanks for all the suggestions,
> K11
>
> Right about here.
> Side mounts are easy to make. Make out of 4130 sheet
> as aluminum tends to fatigue and crack. This one is made
> from angle iron.
> The rear pivot on the alt has near zero load so any small
> bracket or clip will work fine. The load is on the belt end.
> -- > Paul Lamar ...No rotor no motor.

K11. (funny name, still you have to part bonkers to fit a rotary)
In the picture that's where my coils were when they burnt out. Mount the
alternator there and you don't need spacers or an idler. Mount the coil
packs in an icebox in the cabin along with the fuel filter.

Ian Beadle.

Ian,

Yes... I am finding putting the Renesis in to be a bit more of a
challenge than I had thought, but then building the airplane was/is a
bit more work than I thought.  The good news is that I am learning
something along the way and meeting some really great people.   I
appreciate your advice and am planning a blast tube with cold air
across the coils...(little cooler here in Alaska than the Outback!)

K11    K11=K + 11 more letters...... K vernplassen  This nickname was
courtesy of some lazy schedulers who didn't like writing out my whole
name; it stuck.

Paul Kvernplassen,
Building a GlaStar in Alaska, with a Renesis Rotary


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