Doug Hall Posted February 13, 2020 Share Posted February 13, 2020 I've been getting noise from the drivetrain on my Roadsport SV and took it in to have the gear box overhauledThe garage has pointed out that the propshaft looks too short as there should not be so much of the section that slides into the back of the gearbox exposed - see photo I've been advised that the propshaft can be lengthened to address this.Any advice you can give me in this would be welcome! Link to comment Share on other sites More sharing options...
ChrisC Posted February 13, 2020 Share Posted February 13, 2020 Have you still got the Caterham part label on the propshaft? Its worth a look, even if faded over time. Link to comment Share on other sites More sharing options...
Guy Lowe Posted February 13, 2020 Share Posted February 13, 2020 Too short IMO, I had the same problem when I bought my car sent it to https://www.dandfltd.co.uk/. Great service, they put a complete new tube on, balanced and checked over U/J's, came back within 2 days and the price was very reasonable Link to comment Share on other sites More sharing options...
Wrightpayne Posted February 13, 2020 Share Posted February 13, 2020 Bailey Morris are the OEM supplier based in St Neots.That does indeed look short - I wonder if its an S3 prop. IIRC mine has 1/2"-3/4" gap.Ian Link to comment Share on other sites More sharing options...
Tom_Arundel Posted February 13, 2020 Share Posted February 13, 2020 My SV is the same.....drips oil but has done 35000 miles Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted February 14, 2020 Member Share Posted February 14, 2020 How do you measure prop shafts: between centres of the UJs?Too short IMO, I had the same problem when I bought my car...Anything special about the history of either of the cars?I wonder if its an S3 prop.Nice explanation.Jonathan Link to comment Share on other sites More sharing options...
Guy Lowe Posted February 14, 2020 Share Posted February 14, 2020 JonathanMine is a 1990 kit and originally an X Flow. When I spoke to John and Mick at Redline about the problem a few years back, they told me that when CC ran out of stock of the correct shafts it was common practice to send out the slightly shorter Vauxhall units Guy Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted February 14, 2020 Member Share Posted February 14, 2020 ThanksJonathan Link to comment Share on other sites More sharing options...
Area Representative Geoff Brown Posted February 14, 2020 Area Representative Share Posted February 14, 2020 Going back to as far as 1994 there have been circumstances where the prop shaft supplied by CC have been of the incorrect length.The prop shaft on my second Seven a 1.6K (2000 model home built) was too long as when I drove it for the first time it barely got around the block before 'stiffening up'. This also did not do the gearbox any good.CC were aware of this problem but did not share it so they paid the price for rectification even before the car went for IVA. Link to comment Share on other sites More sharing options...
elie boone Posted February 14, 2020 Share Posted February 14, 2020 That is about the play what you need for a Live axle so i can't see why it shouldn't work. Link to comment Share on other sites More sharing options...
Area Representative Geoff Brown Posted February 21, 2020 Area Representative Share Posted February 21, 2020 Play? Live axle? Why it shouldn't work? I disconnected one drive wheel drive shaft to get it on the CC trailer. That is how stiffened up it was. Link to comment Share on other sites More sharing options...
Bricol Posted February 21, 2020 Share Posted February 21, 2020 I think he's pointing out the original photo shows about the right play to allow the prop to plunge in the gearbox as a live axle goes into bump. So overall engagement with the output splines should be similar and should work. Link to comment Share on other sites More sharing options...
elie boone Posted February 22, 2020 Share Posted February 22, 2020 Correct Bricol, this is eaxactly the reason why a Wiki won't work. If the propshaft would be too long on a DeDion it would destroy the propshaft seal on the gearbox tail and in an extreme case would damage the seal housing. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted February 23, 2020 Member Share Posted February 23, 2020 ... this is eaxactly the reason why a Wiki won't work.I don't understand that. More, please.ThanksJonathan Link to comment Share on other sites More sharing options...
elie boone Posted February 23, 2020 Share Posted February 23, 2020 One can explain a method of work in a text it's always the reader who interpret what has been written. It's not the first time one explains something on the phone and then have the reply it doesn't work only if you show how it needs to be done they say ah right that is how it's done not to speak of eventually complications. To work on a caterham some tools are modified or only a specific socket makes the job easy like for the level plug on a Ford diff on a Dedion. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted February 23, 2020 Member Share Posted February 23, 2020 Thanks. I wouldn't disagree with any of that, but why wouldn't a multiauthor 7 Wiki be better than our current approach with information scattered across multiple threads and Guides? Especially as so many Members have problems searching.Those special cases and exceptions could then be recorded and found every time whereas at the moment they're often omitted in any particular discussion.And if the wiki wasn't clear then one of the many helpful experts could give the explanation and we could add it to the wiki.Jonathan Link to comment Share on other sites More sharing options...
Wrightpayne Posted February 24, 2020 Share Posted February 24, 2020 I've been caught out with advice meant for a different derivative - wiki just needs to define age, make, model etc. People buying incorrect PCD wheels springs to mind. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted February 25, 2020 Member Share Posted February 25, 2020 I've been caught out with advice meant for a different derivative - wiki just needs to define age, make, model etc. Definitely. And that's why we need to both consolidate the information and implement multi-authoring: that knowledge about different versions, requirements and special cases is scattered across multiple Members' minds.Jonathan Link to comment Share on other sites More sharing options...
Area Representative Golf Juliet Tango Posted February 25, 2020 Area Representative Share Posted February 25, 2020 The concept of collective memory and allowing diverse knowledge into the group. Yes, it is valuable to the Club and not just in the technical details of the cars. Link to comment Share on other sites More sharing options...
elie boone Posted February 25, 2020 Share Posted February 25, 2020 It already exist in the technical guides. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted February 27, 2020 Member Share Posted February 27, 2020 When we started work on the wikis last year it was agreed that the current Guides should be developed to implement them, rather than creating a new category. Shaun did the work that allows that. So the big difference is their support for multiple authorship. And that approach means that the change can be gradual.Jonathan Link to comment Share on other sites More sharing options...
EEK Posted February 27, 2020 Share Posted February 27, 2020 Not a lot in here about short prop shafts any more! :-) Link to comment Share on other sites More sharing options...
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