inkpot
SILVER Star
Howdy! So would it be possible to solve the problem by fabbing up a removable diff cover like the earlier semi-floaters have? John
Twisted rear axle shaft
- Thread starter landtank
- Start date
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Excellent idea. I might do this when I regear, assuming my axle comes out.
- Thread starter
- #143
the drawing that I posted was wrong. When machined to those dimensions there were still some splines left on the shaft.
Right now the guy has my engine and is doing all that work so the bill for this hasn't been made. He did say that he had a lathe that he could setup permanently just for these axles is people wanted them done.
The red dye was used to stain the shaft soi he knew when he reached the proper depth.
Right now the guy has my engine and is doing all that work so the bill for this hasn't been made. He did say that he had a lathe that he could setup permanently just for these axles is people wanted them done.
The red dye was used to stain the shaft soi he knew when he reached the proper depth.
Cool - I have a spare set that I would send to have done if your machinist will set up a lathe, and then I'll pull my existing shafts and use as spares.
Assuming your setup tests out well, of course, i.e. it didn't weaken the shaft. By the pics it looks really good.
I'm in...
- Thread starter
- #147
No Updates other than having to have the shaft slightly reworked as my measuring was off and in the locked position there was still splines outside the collar that would lock the collar in place if the shaft twisted.
I need to now pull my rear third and check the rest of the work before beating on one. Nay has been nice enough to get involved but I just haven't found the time to complete the eval. I'll try and get to it with earnest.
I need to now pull my rear third and check the rest of the work before beating on one. Nay has been nice enough to get involved but I just haven't found the time to complete the eval. I'll try and get to it with earnest.
Any updates? I'm planning on putting an 9.5" e-locker from an 80 into the rear of my 60 with PP axleshafts. Sounds like a bad combo from reading this thread but on the flip side, I've never heard of a 60 with cable lockers twisting axle shafts.
Aren't cable lockers and e-lockers functionally the same in terms of how the collar rides on the shaft?
Aren't cable lockers and e-lockers functionally the same in terms of how the collar rides on the shaft?
- Thread starter
- #149
from what I can tell the rear cable locker has the same innards as the electric one. The 60 is a little lighter and the output from the engine is less so I doubt you'll have issues. Being a semi floating axle how are you dealing with the spline length issue or is that taken care of with the PP shafts?
I swapped in an overseas FF rear axle, then broke the long side shaft on Memorial day. Bought the PP shafts as a replacement since the factory ff shafts are difficult to find, and the pp shafts come with long splines on the long side for a cable / electric locker.
I hope it's not an issue, but I'd rather know one way or the other rather than worry about it. Did you ever hear back from Poly Performance?
- Thread starter
- #151
I talked with poly performance and basically got an " Oh well" out of them.
I personally wouldn't run them because they do twist easier which just brings the pain sooner.
I personally wouldn't run them because they do twist easier which just brings the pain sooner.
I don't really have a choice as the stock shafts are just as expensive. I guess I'll be a test case then.
Did you get anywhere with machining the splines off of a PP shaft to prevent the splines from twisting?
I'm interested to see how this turns out.. my solution has been thus far, if it screws up and I have to cut it apart, its getting a D60, D70 or 14B.
- Thread starter
- #154
I've machined a stock shaft and need to pull my third and confirm the spline location and then start testing.
The PP axles are designed to twist instead of breaking. IMO they are the wrong choice for this application and I'm not putting any time into modifying them.
!!!
Holy thread resurrection batman.
Did this ever go anywhere, Rick?
Did this ever go anywhere, Rick?
- Thread starter
- #157
the first shaft was sent back to Nay and I have a second being turned.
If anyone wants to get in on the testing we can arrange a swap you just need to pay shipping and machine costs.
If anyone wants to get in on the testing we can arrange a swap you just need to pay shipping and machine costs.
I am interested in testing but I have a PP shaft and I'm assuming that you're only doing this to stock shafts, right?
Should be just about the same test in my 60 because I've got an 80 series e-locker in my FF.
- Thread starter
- #159
I took the easy way out and took all the measurements fron the diff end of the shaft. So I'm not sure if they will transfer over to the poly shaft.
Personally I found the poly shaft to be inferior as by nature the chromemoly will twist sooner and creates the problem with less stress.
Personally I found the poly shaft to be inferior as by nature the chromemoly will twist sooner and creates the problem with less stress.
I remember reading that earlier in the thread but in my case, finding stock 60 FF shafts would likely be just as or more expensive than buying the PP shafts, so that's where I went. The 80 series locker came out of the blue this past fall so I threw it in.
I have not been able to find any information about the spline twisting issue with 60 cable lockers, so I don't expect an immediate issue as the locking collar / side gear function is close to, if not identical between the cable locker and e-locker when it comes to 9.5" diffs. Just curious I suppose.
I've had enough of polluting this thread with my blathering. Thanks for all the info Rick!
