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Old 09-28-2010
mynavion mynavion is offline
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Join Date: Dec 2007
Location: Stockbridge
Posts: 2,402
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Quote:
Originally Posted by rtpn60 View Post
Ok.. I'm excited.. just finished mounting a drive-line retarder I removed from an '82 Bluebird parts bus onto my '78 Wanderlodge. It was designed to go on the last driveshaft but due to holding tanks, etc.. I had to move it up one shaft. Worried about angles I installed a 2" shim to lower the final carriage bearing and then had Allison run numbers to insure the angles were acceptable for the u-joints.

Tranny = .2 dn
1st Shaft = 57” @.8 dn
2nd Shaft = 26” @.9 dn
Retarder = 19" @ 3.3 dn
3rd Shaft = 22-1/2” @2.5 dn
4th Shaft = 63-3/8” @4.5 dn
Rear-End = .7 up

Results from Allison;

Front test from transmission to retarder Acceleration radian/sec2

Effective angle – Limit – Actual - Result

Torsional 2.47 – 500 – 160 - OK
Inertial drive .84 – 1000 – 19 - OK
Inertial coast 3.39 – 1000 – 301 - Ok

Rear test from retarder to rear axle. Acceleration radian/sec2

Effective angle Limit Actual Result
Torsional 3.33 – 500 – 290 - OK
Inertial drive 1.65 – 1000 – 71 - OK
Inertial coast 4.99 – 1000 – 652 - OK

So if all goes well I will make it to the Balloon Fest!

I hear you are going to be doing these installs at RATS on a first come basis?

No seriously, way to go. That's way more than I could tackle.....
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John Stiles
1980 33FC
"My Navion". SOLD
Stockbridge, GA
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