trigolf Posted July 6, 2023 Report Share Posted July 6, 2023 Afternoon all.I have just completed a rotoflex rear wheel bearing replacement. During final checks that all ok, before replacing the wheel, I happened to notice that there is a noticeable 'clonk' when you grip the inner 'Lobro'? joint and rotate the drive shaft. It's definitely in the Lobro coupling and not the diff inner axle or the outer CV joint. There is also no detectable play in the wheel bearing, so it's not that. When I compare the 'play' with the other side there is a noticeable difference in free play and associated 'clonk'. I'm not familiar with Lobro or CV joints. Should there be any detectable play? I don't want to take the whole bloody thing to bits again, unless necessary! Link to comment Share on other sites More sharing options...
iani Posted July 9, 2023 Report Share Posted July 9, 2023 I rejected two sets of CDD CV shafts due to their being noisy, I now use CDD uprated standard shafts on my GT6, I used their uprated sliding spline shafts on my TR6 previously. Link to comment Share on other sites More sharing options...
Nigel Clark Posted July 9, 2023 Report Share Posted July 9, 2023 Try contacting Alasdair Southall, the founder and boss of CDD. He's a good engineer and very helpful. Nigel Link to comment Share on other sites More sharing options...
trigolf Posted July 12, 2023 Author Report Share Posted July 12, 2023 On 09/07/2023 at 18:27, iani said: I rejected two sets of CDD CV shafts due to their being noisy, I now use CDD uprated standard shafts on my GT6, I used their uprated sliding spline shafts on my TR6 previously. Iani, when you say noisy, what do you mean exactly? Link to comment Share on other sites More sharing options...
iani Posted July 12, 2023 Report Share Posted July 12, 2023 5 hours ago, trigolf said: Iani, when you say noisy, what do you mean exactly? 1 Link to comment Share on other sites More sharing options...
trigolf Posted July 12, 2023 Author Report Share Posted July 12, 2023 Thanks Iani, that's exactly the same problem as I have. I have to say I'm not very impressed when my driveshafts have done less than 3k since fitting and they were'nt exactly cheap! I would expect CV's to last 90k+. I will be speaking to CDD! Link to comment Share on other sites More sharing options...
Puglet1 Posted July 12, 2023 Report Share Posted July 12, 2023 4 minutes ago, trigolf said: Thanks Iani, that's exactly the same problem as I have. I have to say I'm not very impressed when my driveshafts have done less than 3k since fitting and they were'nt exactly cheap! I would expect CV's to last 90k+. I will be speaking to CDD! Hmm. This leaves me in a quandary. I was thinking about buying a pair of CV’s in the near future. What alternatives are left? Link to comment Share on other sites More sharing options...
johny Posted July 12, 2023 Report Share Posted July 12, 2023 Let us know the outcome as the sign of a good company is how they deal with issues.... 1 Link to comment Share on other sites More sharing options...
iani Posted July 13, 2023 Report Share Posted July 13, 2023 16 hours ago, Puglet1 said: Hmm. This leaves me in a quandary. I was thinking about buying a pair of CV’s in the near future. What alternatives are left? I went with CDD's uprated standard shafts. Link to comment Share on other sites More sharing options...
iani Posted July 13, 2023 Report Share Posted July 13, 2023 16 hours ago, johny said: Let us know the outcome as the sign of a good company is how they deal with issues.... Alasdair Southall's customer service is exemplary, I had bought my shafts from Rimmers, when I had the issues I contacted Alasdair & Rimmers via email, who do you think responded first? 2 Link to comment Share on other sites More sharing options...
Ian Foster Posted July 13, 2023 Report Share Posted July 13, 2023 (edited) On 06/07/2023 at 18:17, trigolf said: there is a noticeable 'clonk' when you grip the inner 'Lobro' Lobros are a marvel of engineering and should give a long service life as long as the boots have been intact. My axle conversion uses 95mm Lobros off a Volvo 340 and had already had a life before being built into the Jones/Bowler CV axle conversion. I understand that new ones are often quite stiff and you can pay extra for new 'motorsport spec' units which have been disassembled and polished internally with a Dremel and fine sanding drum. It will be interesting to hear what CDD say, particularly as yours are OK on one side. Ian Edited July 25, 2023 by Ian Foster spelling Link to comment Share on other sites More sharing options...
trigolf Posted July 13, 2023 Author Report Share Posted July 13, 2023 Coincedently, the discovery of excessive play in the lobro came about during wheel bearing replacement. I initially wondered if I had set the endfloat too tight, as during test drives the rear of the car would ' twitch' momentarily from time to time, which felt like it was coming from the same side (RH). I could find nothing wrong with the bearings after pulling the hub off, or the brakes, which was confusing. I think I was experiencing what TR drivers had suffered - the Triumph Twitch?, when the sliding splines lock up. If not the same mechanical cause, the symptom seems the same. When I get home, I'll pull the shaft out and speak to Alisdair. Link to comment Share on other sites More sharing options...
trigolf Posted July 28, 2023 Author Report Share Posted July 28, 2023 Afternoon all. Just a quick line to report back, as requested. I emailed Alasdair(boss man) and described the intermittent 'twitch' symptom and large amount of free play in both inner and outer joints. Although I bought them from Rimmers in 2018, he did not even quibble and said they would repair or replace at no charge. He was surprised how much play there was in both joints. Today I have recieved a replacement shaft with no discernable play in either joint. Even though I had the problem, I was impressed at his attitude and response to the issue - a refreshing change in todays world! 6 Link to comment Share on other sites More sharing options...
johny Posted July 28, 2023 Report Share Posted July 28, 2023 that is impressive although of course also depends how long the replacements last.... Link to comment Share on other sites More sharing options...
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