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TR6 TR6 Rear Axle and Hub - saga continues

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Nearly there on the stronger rears. Need some help here though as I can't get to my car until next week:

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The area I am looking at is at the u-joint itself. It looks like the there is room in the drawings. Currently the diameter of the u-joint is 4 inches diagonally across the yokes. This is what is required to determine clearance around the axle. I am looking at modifying a drive assembly (reduced cost to you) that will actually be overkill for the engine you have but should last a long time (no failures like listed in the emails) and give you room for engine modifications. I will also need one measurement I forgot to ask. I need the length between the center of u-joint to the center of u-joint (differential joint to wheel joint) mounted in the car with the weight of the car on the wheels or a jack under the control arm. This will give me the resting operating length.

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Can someone please please pass me on this measurement. I'll go get it if I have to, but that's going to set the process back a week (and entail me driving 2 hours).

If at the same time you can tell me if there is 1/8" of clearance all round the outer U joint (closest to the wheel) that would also be awesome. The CV joint he's looking at requires 4 1/4".

Thanks in advance, Alan
 
Alan, Center to Center is 10 1/8". and 3/16" clerance. I am coming up with a different diameter measurment than you approx. 3 3/8-?---- Are you close to a ball park figure $$ ? I think it might have to be a considerable savings over the Moss unit to be worth it, although having another alternative is nice. Thanks for your effort on this.
 
Dimensions [Dimensia?]

It's looking like approx $1400 a pair, which is way less than Moss et al. I spoke to him briefly this afternoon, but had to run off to get my train.

If there was 4 1/4" in clearance at the back he could have used cv axles off a Porsche 930 is why he was keen on that #. No worries about power handling then!

I have 3.5" for the id of the cylinder that the assembly passes through - measured on 2 cars now, both with halfshafts out, and 6" for the max length of the cylinder that it passes through in the swingarm.

Neither he nor I think that spacing the hub so the CV mounts behind the cylinder is the way to go - the angles might be too steep and cause it to bind, so he's using the next smaller size CV joint - and I don't know what it's off yet.

I called my mechanic this am - he found a different TR6 in the shop and did the same measurements for me (mine has the halfshafts out). He came up with 11" +/- 1/8" and 4" total for the UJ yoke clearance (so 1/4" all round). We're close on the UJ diameter, but I'm a little concerned about the difference in lengths.

I'll have proper details next week. I do know that it's going to be bolt in, but will come in 3 pieces. CV joint, hub assy and diff adapter so it can be mounted easily with ZERO mods (I have the 6-pack article - nice idea, and a good backup, but I don't want to spend time die grinding).
Your current setup isn't used at all, so you can keep them and return to stock if you want to (yeah right). The bearings will be readily available if they need to be replaced.

I'll post the info when I know more.
Alan
 
Re: Dimensions [Dimensia?]

my measurement was with the back of car jacked up and let down onto jackstands that were placed about halfway on the swing arms, I dont think the car was completly settled down in this position, but 10" and 11" does seem to be a large amount, I did recheck my measurement about 4 times.
 
Re: Dimensions [Dimensia?]

ALLAN - I'm not arguing with the measurement or the methdology, it's just that that's a big difference. I'd like to hope we're on the extreme ends of the spectrum, but with a sample size of two it's hard to say...

I appreciate you taking the time. If anyone else has a few minutes to do the same this w/e I'd be most appreciative.
 
Re: Dimensions [Dimensia?]

Alan, I knew there was not an argument, just wanted to show what the measurment position was for comparison to your mechanic. My car is lowered 1 1/2" and with the car not quite settled on the jack stands (probably raised up 1 1/2") it should have been close to stock. Keep us informed, Thanks
 
Re: Dimensions [Dimensia?]

No - I'm waiting for the guy to get back to me with the final design.
 
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