RogerH Posted March 18, 2019 Report Share Posted March 18, 2019 Hi Rich, I have a good old shaft at 42.75mm A used brass sleeve is 42.95mm Yours is on the small side Reaming would be silly. Can you put the sleeve in a lathe to skim. Roger Quote Link to post Share on other sites
Waldi Posted March 18, 2019 Report Share Posted March 18, 2019 Or send it back and ask for a proper one! Quote Link to post Share on other sites
RogerH Posted March 18, 2019 Report Share Posted March 18, 2019 (edited) 3 hours ago, AarhusTr6 said: Hi all I had a call from my mechanic and he said the sleeve is too small for the shaft. His estimates are that the new one is 42,5 millimeters and the old one is 42,8 millimeters. Can anyone help me on this? I wrote to Rimmers and they suggesting having the new brass one reamed but I simply don't get why this should happen. Is it possible the whole clutch I have is from something else or the shaft is the wrong diameter and from something else? Greatly appreciate help here as all work has stopped at the workshop. I can take better measurements and pictures if necessary. Rich Hi Rich, contact Rimmer and tell them they have bad parts give them the details. Consider raising a PQI form and and we may be able to follow it up. https://www.tr-register.co.uk/pqi Roger Edited March 18, 2019 by RogerH Quote Link to post Share on other sites
AarhusTr6 Posted March 18, 2019 Author Report Share Posted March 18, 2019 (edited) hi all and thanks for help. I do not have a really good micrometer so may be out a bit. The new brass sleeve is about 0.20mm smaller so its a tiny bit too small. It goes on, but sticks. Using not the best measurer, I guess the new brass is 42.72mm. The old is about +0.20 so about 42.87-94. I am wondering if the actual shaft is maybe a tiny bit bigger? And here is the big but. . . why and If so, is this because of a different gearbox from another type of Triumph? However Roger is saying his shaft is coming through at 42.75mm so as I see it, this new sleeve would just fit on this but may be a bit tight. The mechanic will go try find the serial number on gearbox and try measure the shaft to help my finding the problem. Appreciate any help and ideas or thoughts. Mr Paranoia is telling me new gearbox :-( Rich Edited March 18, 2019 by AarhusTr6 Quote Link to post Share on other sites
Mike C Posted March 18, 2019 Report Share Posted March 18, 2019 "is this because of a different gearbox from another type of Triumph" This practice is pretty common given the TR6's age. My gearbox serial number indicates it came out of a Triumph sedan, this caused a lot of problems the first time I replaced a clutch. Other Tr6's have been fitted with modified Stag gearboxes over the years. Quote Link to post Share on other sites
stuart Posted March 19, 2019 Report Share Posted March 19, 2019 12 hours ago, AarhusTr6 said: hi all and thanks for help. I do not have a really good micrometer so may be out a bit. The new brass sleeve is about 0.20mm smaller so its a tiny bit too small. It goes on, but sticks. Using not the best measurer, I guess the new brass is 42.72mm. The old is about +0.20 so about 42.87-94. I am wondering if the actual shaft is maybe a tiny bit bigger? And here is the big but. . . why and If so, is this because of a different gearbox from another type of Triumph? However Roger is saying his shaft is coming through at 42.75mm so as I see it, this new sleeve would just fit on this but may be a bit tight. The mechanic will go try find the serial number on gearbox and try measure the shaft to help my finding the problem. Appreciate any help and ideas or thoughts. Mr Paranoia is telling me new gearbox :-( Rich Stamped on the shoulder of the box where the clutch actuating arm comes out will be some letters/numbers this will help you work out what the box came out of. Stuart. Quote Link to post Share on other sites
stuart Posted March 19, 2019 Report Share Posted March 19, 2019 Oh and I hope your sleeve isnt brass as it wont last five minutes it must be the bronze version or the steel one. Stuart. Quote Link to post Share on other sites
astontr6 Posted March 19, 2019 Report Share Posted March 19, 2019 1 hour ago, stuart said: Oh and I hope your sleeve isnt brass as it wont last five minutes it must be the bronze version or the steel one. Stuart. Hi Stuart! Do you have any experience of fitting the Revington bronze type and did you use saloon slippers, as to their performance over time? Is it thumbs up or down? Bruce. Quote Link to post Share on other sites
stuart Posted March 19, 2019 Report Share Posted March 19, 2019 I have a bronze one in mine but I havent bothered with the saloon pins, works fine for me. Stuart. 5 hours ago, astontr6 said: Hi Stuart! Do you have any experience of fitting the Revington bronze type and did you use saloon slippers, as to their performance over time? Is it thumbs up or down? Bruce. Quote Link to post Share on other sites
AarhusTr6 Posted March 19, 2019 Author Report Share Posted March 19, 2019 Quote I got these from the mechanic and it seems there are several numbers on the gearbox. Anyone who can help me please ? Quote Link to post Share on other sites
AarhusTr6 Posted March 19, 2019 Author Report Share Posted March 19, 2019 (edited) Hi I found this which indicates that its an original GB so I simply cant see why the sleeve from Rimmes does not fit so I can assume its a manufacturing issue :-( Gearbox serial numbers prior to 1972 were prefixed with the letters CD for all models, and the numbering sequence continued the range of numbers that was started for the TR250 and TR5. This same numbering system was continued for non-U.S.A. models right through to the end, but beginning with the 1972 model year, gearbox numbers for U.S.A. models were prefixed with the letters CC, and the sequence began with the number CC75001. There is an indication in the factory spare parts catalogue that, beginning with the 1975 model year, gearbox numbers for U.S.A. type markets were prefixed with the letters CF, but we have never seen a gearbox number with a CF prefix, and several very later 1976 models in our possession have gearbox numbers with CC prefixes. Edited March 19, 2019 by AarhusTr6 Quote Link to post Share on other sites
AarhusTr6 Posted March 21, 2019 Author Report Share Posted March 21, 2019 Hi all I decided to give up on this one. I have been back and forth with Rimmers and I keep saying its the inner of the sleeve that cannot go onto the shaft but they either go on about the fork, or the bearing etc not fitting. I therefore go back to using the original iron one with the new bearing which I know fits and then the mechanic can get back to work. Thanks for all the help, was really pleased with the idea of the bronze sleeve but its seems all too complicated so throwing in the towel as they say. Rich Quote Link to post Share on other sites
RogerH Posted March 21, 2019 Report Share Posted March 21, 2019 Rich, don;t panic the steel sleeve does and will work. The bronze does work also. Put it all back together and get it on the road. Who ever you spoke to at Rimmer is not being fair to his customers - head in the sand and whistling dixie. (can that be done) Roger Quote Link to post Share on other sites
Mike C Posted March 21, 2019 Report Share Posted March 21, 2019 4 hours ago, AarhusTr6 said: Hi all I decided to give up on this one. I have been back and forth with Rimmers and I keep saying its the inner of the sleeve that cannot go onto the shaft but they either go on about the fork, or the bearing etc not fitting. I therefore go back to using the original iron one with the new bearing which I know fits and then the mechanic can get back to work. Thanks for all the help, was really pleased with the idea of the bronze sleeve but its seems all too complicated so throwing in the towel as they say. Rich Maybe try sending the gearbox photos to Rimmers and ask them for advice, they might have given you the wrong component and photos are better than verbal phone descriptions. Quote Link to post Share on other sites
15eren Posted March 22, 2019 Report Share Posted March 22, 2019 Hi Rich Place the steel-sleeve in the lathe and polish inside with steel-wool and the edges at both ends with something that can make them a bit less sharp. And also polish the shaft. And do not forget to align the gearbox with the back-plate with the two dowels, that fits tight. That should do it. Cheers Tage Quote Link to post Share on other sites
astontr6 Posted March 23, 2019 Report Share Posted March 23, 2019 On 3/18/2019 at 3:26 PM, AarhusTr6 said: Hi all I had a call from my mechanic and he said the sleeve is too small for the shaft. His estimates are that the new one is 42,5 millimeters and the old one is 42,8 millimeters. Can anyone help me on this? I wrote to Rimmers and they suggesting having the new brass one reamed but I simply don't get why this should happen. Is it possible the whole clutch I have is from something else or the shaft is the wrong diameter and from something else? Greatly appreciate help here as all work has stopped at the workshop. I can take better measurements and pictures if necessary. Rich Hi Rich, Having converted your mm to inches we are only taking about 0 015" to be removed here! This can easerly be done on a lathe to give a running clearance of 0.003". The figures of 42.75 and 43.15 mm in the post above give 0.016"" clearance which is far too much and I believe that will give a sticky clutch as they were similar to my original ones? Quote Link to post Share on other sites
AarhusTr6 Posted March 24, 2019 Author Report Share Posted March 24, 2019 Hi all I don't really have access to a lathe and the car is hogging space at the mechanics. I sent tons on pictures to Rimmers and they could not understand the issue. thanks for all Rich Quote Link to post Share on other sites
reginald Posted March 25, 2019 Report Share Posted March 25, 2019 Hi, I fitted a new steel carrier(unknown manufacture from a trade stall at stoneleigh) which had a smaller bore than the original worked fine on the bench but in use was very stiff so I Brought a bronze carrier and it was still binding on the shaft giving a hard clutch I got my brother to cylindrical grind it out to the standard steel size as the bore was smaller and it has since work fine, it appeares to me that bore to shaft clearance is quite critical to getting a smooth working clutch. Which ever carrier material is used Richard Quote Link to post Share on other sites
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