Uprated driveshafts?
Discussion
Just finished work, having a beer, and thinking about my bonkers Seven project.
I'm not in need yet, still working on the front end, but doesn't hurt to do a bit of research eh?
Anyone know where I could source some uprated driveshafts for my SV?
I don't have the standard ones, so it would have to be someone who would knows the sizes. I don't fancy shelling out for Caterham ones I'm not going to need.
My first thoughts are RS Performance for some RST ones, but I made enquiries there about the steering box, and they wheren't very forthcoming. So I'm reluctant to enquire there.
They must get them made somewhere? Maybe someone knows where Caterham souce theirs, and maybe they could build me some.
Any thoughts?
Cheers,
Mick.
I'm not in need yet, still working on the front end, but doesn't hurt to do a bit of research eh?
Anyone know where I could source some uprated driveshafts for my SV?
I don't have the standard ones, so it would have to be someone who would knows the sizes. I don't fancy shelling out for Caterham ones I'm not going to need.
My first thoughts are RS Performance for some RST ones, but I made enquiries there about the steering box, and they wheren't very forthcoming. So I'm reluctant to enquire there.
They must get them made somewhere? Maybe someone knows where Caterham souce theirs, and maybe they could build me some.
Any thoughts?
Cheers,
Mick.
Edited by mickrick on Saturday 11th December 17:49
Try these, you just send them your current ones and they put an uprated shaft in place made from 300 or 30M steel cant remember but give them shout:
http://www.driveshaft.co.uk/
http://www.driveshaft.co.uk/
http://www.baileymorris.co.uk/ are also very good.
Carbon propshafts do exist. Would be pretty harsh. Mine is rubber
Carbon propshafts do exist. Would be pretty harsh. Mine is rubber
I don't know about Bailey Morris, but Dunning and Fairbank (propshaft.co.uk) do them.
They use the CTG composite one, although IIRC an all carbon one used to be available or maybe was in delelopment by someone (RiF ?).
http://www.torqline.com/product_detail_12.php
A two piece composite prop from them was hugely expensive, and didn't work technically (Caterham trans tunnel was too narrow for their centre UJ). Even with the weight saving, there was concern about using a single prop in such a narrow tunnel.
I think the problem with all carbon was getting it balanced and also the general stiffness. At least in "normal" applications.
Certainly in a home-made BEC, where the weight saving would be nice, the extra stiffness in the drive train (same problem with carbon oars in rowing, when they first came in they didn't "give" at the snatch like wood did so you quickly damaged yourself) would not be welcome. So in the end (it wasn't a hard choice, carbon was several thousand IIRC) we spent the money on a Bailey-Morris Torque Resilant Tube prop to put a little softness back in.
They use the CTG composite one, although IIRC an all carbon one used to be available or maybe was in delelopment by someone (RiF ?).
http://www.torqline.com/product_detail_12.php
A two piece composite prop from them was hugely expensive, and didn't work technically (Caterham trans tunnel was too narrow for their centre UJ). Even with the weight saving, there was concern about using a single prop in such a narrow tunnel.
I think the problem with all carbon was getting it balanced and also the general stiffness. At least in "normal" applications.
Certainly in a home-made BEC, where the weight saving would be nice, the extra stiffness in the drive train (same problem with carbon oars in rowing, when they first came in they didn't "give" at the snatch like wood did so you quickly damaged yourself) would not be welcome. So in the end (it wasn't a hard choice, carbon was several thousand IIRC) we spent the money on a Bailey-Morris Torque Resilant Tube prop to put a little softness back in.
O.K. I think some of you are getting driveshafts, and propshafts mixed up here? Unless of course you meant to go slightly O/T. No problem, it's all interesting discussion.
I've spent quite a bit of time on t'internet the last few months, and I haven't been able to come up with anything on Carbon driveshafts.
The carbon propshafts IMO are the way to go. (They're good for 1000hp!) Any weight saving you do will be better spent getting it off rotational mass, and unsprung weight.
Thanks to your link Sam, I've been in touch with Drivelink, and the fellow there, is super quick at answering my questions.
I will have to buy the Caterham ones, but all is not lost. They will do as they did for you Sam, replace the standard ones with 300M material as used in F1 and rally aplications. Although a bit more expensive than £400. Maybe you had yours done a while back?
"The secret is that the material strength is 1900/2100 Nmm2 as opposed to 625/775Nmm2 on OE material, therefore the physical sizes/weights remain approx the same."
I asked about Gun Drilling, but it's an expensive operation appently, and I'd have to get this done myself.
They say the standard CV joints don't need doing in my case, they will be good for the 420hp I'm hoping to put through them. Hope so!
I'm all sorted then. Brakes, suspension, driveline, gearbox, all Tickety Boo.
Project X is Go!
I've spent quite a bit of time on t'internet the last few months, and I haven't been able to come up with anything on Carbon driveshafts.
The carbon propshafts IMO are the way to go. (They're good for 1000hp!) Any weight saving you do will be better spent getting it off rotational mass, and unsprung weight.
Thanks to your link Sam, I've been in touch with Drivelink, and the fellow there, is super quick at answering my questions.
I will have to buy the Caterham ones, but all is not lost. They will do as they did for you Sam, replace the standard ones with 300M material as used in F1 and rally aplications. Although a bit more expensive than £400. Maybe you had yours done a while back?
"The secret is that the material strength is 1900/2100 Nmm2 as opposed to 625/775Nmm2 on OE material, therefore the physical sizes/weights remain approx the same."
I asked about Gun Drilling, but it's an expensive operation appently, and I'd have to get this done myself.
They say the standard CV joints don't need doing in my case, they will be good for the 420hp I'm hoping to put through them. Hope so!
I'm all sorted then. Brakes, suspension, driveline, gearbox, all Tickety Boo.
Project X is Go!
Hi Sam, £275 a side, but not sure if this is + or inc. of the Vodka.
Thanks for the offer of the bits, but my car's SV. Not sure what you have? S3 I beleive?
I think it will be just as easy to get the driveshafts sent complete from CC directly to driveline, then they can copy the dimensions from the originals. Less chance of any cockups. Unless of course CC send the wrong parts. Not unheard of.
I'm such a pessimistic old git eh?
Thanks for the offer of the bits, but my car's SV. Not sure what you have? S3 I beleive?
I think it will be just as easy to get the driveshafts sent complete from CC directly to driveline, then they can copy the dimensions from the originals. Less chance of any cockups. Unless of course CC send the wrong parts. Not unheard of.
I'm such a pessimistic old git eh?
Mick
According to something on BlatChat, CC have just announced some kind of "improved" final drive package with a different diff and drive shafts. Some customers of more recent cars have been written to and invited to buy the "upgrade".
Some may not be happy as they have already been complaining about cwp noise and don't see why they should have to pay for an improvement.
I do not know what the package is but it may be worth contacting CC to find out. Maybe it represents a running change to a different diff as the Sierra unit is getting harder to source. Maybe it would help with your bonkers spec?
Cheers
Peter
According to something on BlatChat, CC have just announced some kind of "improved" final drive package with a different diff and drive shafts. Some customers of more recent cars have been written to and invited to buy the "upgrade".
Some may not be happy as they have already been complaining about cwp noise and don't see why they should have to pay for an improvement.
I do not know what the package is but it may be worth contacting CC to find out. Maybe it represents a running change to a different diff as the Sierra unit is getting harder to source. Maybe it would help with your bonkers spec?
Cheers
Peter
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