[Fot] GT6 Rear Hubs

Tue Jan 13 11:07:49 MST 2015

    I have used both the Corvair and Datsun modifications. The Corvair setup involves extra work in that you have to weld and redrill the flange for the proper wheel stud spacing. The Corvair also uses a fairly large taper roller bearing and its a close fit when you bore the GT6 upright for the new bearing. You might try to find some slightly smaller OD bearings here !

 The Datsun setup is the easiest. You end up with the same wheel stud pattern as the "Big" TR wheels (4.5" bolt circle) and if you keep that spacing you have more options for wheels than the GT6 spacing. 

 If you go with the Datsun, try to find 240Z or 510 axles as they are smaller in shaft diameter than the 260 and on size. This is easier as again when you bore the upright for the new bearings you will have more of the original casting left. Try to get the complete axle assembly with the bearing spacer, small distance washer between the outer flange and outer bearing and the drive (half) shaft flange (you will need to utilize all these pieces).
 ?
 If you want to go with CV's, I have cut the inner flange about midway and done the same to the VW flange or whatever CV setup you like, and welded them together to make a flange that goes on the Datsun axle and will mate with your CV. (I usually use VW beetle assemblies as they are plentiful and have withstood the rigors so far).

 Never one to leave it "stock"...
 Nick in Norcal

 -----Original Message-----
 From: Scott Janzen via Fot <fot at autox.team.net>
 To: damys <damys at charter.net>
 Cc: fot <fot at autox.team.net>
 Sent: Sun, Jan 11, 2015 11:11 am
 Subject: Re: [Fot] GT6 Rear Hubs

     I'm curious to see what other answers come up. ?Steve Smith used to prep the uprights to accept Datsun stub axles and (I think) TR6 halfshafts - see Kas' first book for photos. 
  My car came to me with the uprights modified to accept larger (unknown origin) bearings and Corvair stub axles, with the Corvair wheel flange turned down and re-drilled for the Triumph bolt pattern, and Spicer halfshafts. ?They've been trouble-free for me; ?I'm about to pull them apart for servicing and probably have a duplicate set of uprights made up so they'll be interchangeable with what's on my car. ?I believe Lotus Europa owners also swapped out for the corvair stub axles at the time. This was the solution "back in the day". ?Any good driveshaft shop can make up the halfshafts.

  BTW - these are the stub axles from the articulated independent rear second series Corvair, not the early Nader swing axle cars.

  You can see some photos of my car's rear suspension at?http://www.britishracecar.com/ScottJanzen-Triumph-GT6.htm

   Today, though, you might want to go the Datsun route for better availability, and look at the write-up in Kas' 2010 boo on Chuck Gee's car, which uses a hybrid of Datsun and some cool CV joint axles.

  On Jan 11, 2015, at 8:00 AM, damys--- via Fot wrote:
  Where do we go, who do we talk to about a competition rated rear hub and axle setup for a roto GT6?? We can get the axles built locally, but are having a hard time discovering hub options.? Would prefer purchasing a race proven combination of axle and hub setup.
  Thanks for any help.
  Alex and Dave
 _______________________________________________
 f

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/fot/attachments/20150113/64b7fb38/attachment-0001.htm>