Subject: 3.17 box
From: rotaryeng
Date: 7/26/2013, 7:20 AM
To: AAA-rotaryeng


Looks rather cannon prof.
What is the overall length? Should be kept to 15 inches to fit in most cowls.

Paul Lamar



For a test item it may yield significant data. If it shows promise we can always try lightening it. The drive itself is just under 13 inches.

Milo

That is a nice sun gear spline. Where did you get it and the mating female part? A bit overkill for only 300 foot pounds.


Paul Lamar


Paul,

We have enough pieces now to get good measurements, so far no glitches.
Milo

The critical measurement is from the bell housing mounting surface to the prop flange. If you are using a Mazda bell housing part of the PSRU must be recessed into the bell housing which I think you are doing.
Is that a Mazda bell housing?

Paul Lamar



Yes it is a Mazda bellhousing, but it is not the one I want to use.
We are still shopping for a RX8 automatic bell housing, if you or anyone else has one, please lend it to us.

Milo


You should build the box to bolt to Jeff's adapter plate as that has built in motor mounts. RX8 auto tranny bell housings are hard to come by and if bought new very very expensive.


Paul Lamar

Paul,Milo,
    I was under the impressiom that the 93-95 RX7 and the 90+ Cosmo 13B & 20B auto trans
  bell housings are virtually identical to the RX8 auto housings.......

Kelly Troyer


The 93 to 95 RX7 are even more rare than the RX8.
Same goes for the 90+ Cosmo.

The best thing to do is use Jeff plate and forget about a bell houising.
Sooner or later you are going to need a motor mount. Our universal motor mount is designed to be used with Jeff's adapter plate. It is the lowest cost way to go.


Paul Lamar



Milo
I do have one to lend it to you but the problem is.
 I am in Canada until mid september and the housing is at my house in Florida and i dont have anybody there to ship it to you.
I will try to find someone who can take care of it and ship it to you.
I will let you know
Jean Prudhomme

Thanks Jean,
We will of course pay all shipping expense, and take very good care of it.

Milo


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