While at Oklahoma VTR Regional in March, I overheard a lady discuss the rear axle on her TR3B. She said it was a TR4 axle and the car had come from from the factory that way. And she could prove it.
Author: "R. John Lye" <rjl6n@server1.mail.virginia.edu>
Date: Mon, 28 Aug 2000 14:28:58 -0400
My TR-3A had a TR-4 rear axle under it when I bought it (but it had never been a racer). It fit, but there was very little fender clearance. I have since fitted a proper TR-3A rear axle to it, which
Ya know, it would be interesting to hear what other "DPO" fitted oddities showed up in other cars... My `4 came with a TR3 transmission and Stromberg Zenith carbs (my `4 wasn't one of the test batch
My TR3B (TCF1927, not real late in the '3B production) has a TR3 axle. I bought and sold a TR3A with a TR4 axle under there... You could make the tires rub the fenders pushing down on the rear end. I
under It just so happens that I have a smallish pile of TR3 and TR4 rear axles in my barn. From some very quick measurements, it appears that the actual increase in width is about 3", or 1.5" on each
<< Now for the next observation: If a TR4 axle will fit under a TR3 with some changes to spring perch position, have TR4 axles found their way under TR3 race cars. Seem logical? I may be misunderstan
Author: "michael l. cook" <mlcooknj@bellatlantic.net>
Date: Mon, 28 Aug 2000 21:23:18 -0400
RE: TR-3 "widetrack" I wish you had gotten the lady's name and/or the commission number of that car. If she can "prove it" that would add a very interesting item to Triumph lore. I worked at Triumph
As I recall, the TR4 frames were basically TR3 frames. The rear axle housing was widened to increase the rear track, but the frame rails were the same. The front end got a piece of 1.5 inch, maybe 2
I think that Jack Drews is also going through this confirmation process of TR3A to TR4 frame width running changes. Thanks Brad. See you at Texas World Speedway in October....rumor has it that you ar
It is likely possible to get the "lady's" name with a little work. Should be a matter of record at OKie event. Dont want to make a big deal out of this, but give me credit for holding my on this one
But a broader question here might be....why not go to TR4 axle...period ...for the wider stance without spacers and less stres on the bearings and axles. Or am I missing something here. Perhaps most
These outriggers stick out from the frame rail much less than on the later TR4 chassis, and they put an adapter bracket on each of them to get the hole pattern out to where the body bolts on. Some cu
I guess I should have read Brad's message closer -- he says that the front of the chassis was widened. That would explain it. -- TR6 -- 29 and still running TR4 -- 39 and being rebuilt uncle jack --
On CT288L they used the stock TR3 frame and welded 2" wide channel to the outside part of the frame at the front. They angled the rear portion of this channel to meet the frame where it angles wider
Wow that's it!!! Bingo!!! Interesting for those who did not know this and mundane for those who did. Thanks!!!! Go from there on decisions for your vintage TR3A. Joe (A) BTW, Bill,I will be in Pitts
Yes. In fact, when you send your axle to the machine shop, you are to specify whether you want the TR3 length or the TR4 length. They can accomodate both. Irv
<< But a broader question here might be....why not go to TR4 axle...period ...for the wider stance without spacers and less stres on the bearings and axles. Or am I missing something here. Perhaps mo
<< BTW, Bill,I will be in Pittsburgh area for a short period of time on Wednesday. You somewhere near? >> Hi Joe, I am in the middle of helping my wife getting her father's house ready to sell. He pa