> > http://www.alternate-airpower.com/Mikaelsen.html
     > >
     > > I ran accross this site that had a prop governor grafted

onto the distributor

     > drive......any thoughts if this would work with Mazda's

layout? The 20B comes to

     > mind as well as the pre FD engines that do not have crank

triggers that could be

     > converted to such.
     > > Marc Wiese
     >
     > That guy is in for some major surprises as far as power and

cooling are

     > concerned.
     > You need turbo's at 13,000 feet.
     >
     > That is a pretty good idea. Might work for us. The crank angle

sensor

     > gear ratio is usually 2:1 so that would put the prop governor

at about

     > the right speed or half engine speed.
     >
     > Tracy's PSRU output shaft is already partially drilled to

supply oil

     > to the planetary gear set. One would have to drill it all the

way forward

     > and take the oil out of the governor oil pressure boast pump

and feed

     > it to Tracy's PSRU. Tracy's PSRU would then be operating at

about twice

     > engine oil pressure. I don't see a real problem with that. The

gov could

     > be mounted about where the stock Mazda metering pump is

mounted to keep

     > the height down. Getting engine oil into the prop gov is no

problem

     > with a plate adaptor as shown in the #11 photo.
     >
     > Does everybody follow this or do we need a schematic?
     >
     > Paul Lamar

      Schematic please Paul !! Do you think the drive gear of the

13B

     eccentric shaft and the driven gear on the  sensor will be up

to

     the load of driving a prop govenor ?



     Kelly Troyer

I don't know but the gears and drive shaft can always be changed.
I took a closer look at Tracy's prop shaft today and it is already
drilled from
one end to the other. Since the oil pressure out of the gov can be up
to 275 psi there will need to be a restrictor pressed into the prop
shaft to limit
the oil flow to the gears. Tracy's plain aft prop shaft bearing should
work OK
on 275 psi oil I think. This will have to be tried to be sure.
I'll work on an overall schematic shortly. This could be a real break
through
in CS props for the rotary.

Here is some more info on it.

Paul Lamar

Hi Paul and others,  I've never seen the workings of a prop governor so
this is very educational.  Not to mention the possibilities of a PPort
engine with CS prop.  Anyway What would a prop governor cost? Would it
be possible to have a separate oil reservoir for the PSRU and Prop.
What I mean, is a way to separate the two systems.  Drive the prop
governor and oil pump from the Distributor shaft pulling from a oil
reservoir with a separate smaller oil cooler just for the prop/psru.
We've talked about this before but now it looks like this may be viable.
 With Tracy's 2.85:1 psru we would have any variety of props to choose
from.

Tom Webber, RV8A building wings and working on the 13B engine.

I had mine overhauled and it cost me $900. Of course that was certified.
I have no idea what the red tag units are going for. They are pretty simple
and you can fix them yourself for experimental use.

Paul Lamar
 
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