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Post by vmrod on Jul 3, 2008 7:34:55 GMT -3
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Post by 3wheelinhawg on Jul 4, 2008 22:49:07 GMT -3
They are great you can check out the web site TheSamba.com you can find alot of vw things there.
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Post by vmrod on Jul 5, 2008 10:57:22 GMT -3
Thanks for the link. I hope that by using the transmission, I will be able to have take off speed and nice top speed.
I may experiment and see about using the stock rear-wheel drive versus the front wheel drive with transmission.
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Post by xrminion on Oct 28, 2008 13:36:06 GMT -3
Keep in mind that a stock VW transaxle will not work in the XR3. The ring gear in the VW transaxle must be flipped to the other side so that the axles will turn in the opposite direction from what they did in the stock VW bug application. The transmission supplier will normally charge extra to reconfigure the transaxle into this "mid-engine" configuration. Conceptually the flipping of the ring gear is easy. However the gear lash must be set precisely (with shims) when the ring gear is flipped. Otherwise your transmission will "howl" as you drive down the road!
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Post by vmrod on Dec 9, 2008 21:11:56 GMT -3
When you order your electric motor, couldn't you just order it with reverse rotation and leave the ring gear alone?
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Post by vmrod on Apr 21, 2009 17:31:59 GMT -3
I'll be attempting to flip the ring gear soon. I'll make a little tutorial and post it somewhere on this site. Wish me luck!
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Post by vmrod on Aug 26, 2009 9:05:25 GMT -3
Sorry for no tutorial, but I had flipped the ring gear (awhile back).
I may or may not have whirring noise, cuz I did not measure anything. I flipped shims and everything. Seems OK.
Worst case is I'll have to remove the tranny and get it done by a local place.
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Post by artificer on May 9, 2010 12:08:17 GMT -3
One simple test to see make sure the clearance isn't too small is to lock the pinion gear, and rotate the ring gear. You should get a "click" each time you reverse direction. You don't want much slop, but there has to be some. On my Astro van it was .008" (chevy 10 bolt diff)
If you don't have any motion, the gears will howl, and life will be shortened.
If you have a dial gage and the magnetic base holder, its supposed to be fairly simple to do the actual measurement of the backlash with a rod trough the oil drain.
Michael
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Post by vmrod on May 9, 2010 16:11:27 GMT -3
I don't have one of those Michael. I could go get one, but at this point, I feel I'll find out soon enough.
If it makes noise going down the road, then I'll go from there. It may be allright though.
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Post by vmrod on Oct 7, 2010 17:01:45 GMT -3
Well...the tranny started making howling noises. Since I really don't think a raccoon got in there, it must be the ring gear play.
The tranny makes this noise, even while in neutral (when motor is turning of course).
I have stopped riding the car around needlessly for now. Once I get the new set of batteries in, I'll do some more brief testing, then park the vehicle for body construction.
During body construction, many components will have to be removed. I'll take the opportunity to removed the tranny and set it up on a stand with the motor attached. I'll be able to perform all sorts of testing, and hopefully can figure this out myself. If I had a decent set of instructions, I'm sure I could handle it.
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Post by chrisdolph on Oct 8, 2010 13:55:42 GMT -3
It can't be the ring gear if it makes noise while not moving. It's probably one of the bearings in the transmission. It has an input bearing, a bearing between the input and output shaft, and bearings on either side of the countershaft. If the noise goes away when in 4th gear then the bearing between the input and output shaft is the bad one. If you are going to take it apart I would replace them all.
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Post by vmrod on Oct 19, 2010 12:52:13 GMT -3
Thanks for that tip, Chris.
I'll try it out in 4th gear in about a week. My second battery pack will arrive and be tested.
My plan is to send the tranny off to Rancho (or similar place), and have a rebuild with some performance parts, and some gear changes too. (lower third gear, taller fourth gear, and taller final gear)
I'll get a better feel for the gear changes with the next battery pack test.
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Post by roybemis on Apr 27, 2011 3:22:57 GMT -3
The VW transaxle was used in formula vees by flipping the ring gear. Many many vees and no known problems. One gentleman realized that if one turned the transaxle over, then there would be no need to flip the ring gear. This would do several things: 1. Lower the engine somewhere between 4 and 6 inches. 2. Cause the shift pattern to change. 3. One would have to plug the vent hole near the rear of the unit. One would probably have to create a new vent hole. When this was tried in a Vee, the rules were quickly changed so that all vees would not have to be modified. I have no idea how this would affect the life of the gearbox but I do know that at least one was built. The good news is that one would not have to yank the axles, axle tubes and remove and refit the ring gear.
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