Sliding spline driveshafts

[tdafforn]

Hi All,
does anyone know the pros and cons of these vs cvs?
Cheers
Tim

[roadterror]

Heard that the CVs last almost forever ...

Currently using the spline driveshafts .. the UJs require regular
replacement. Have a new set of CVs that I'll install in the +2 when the UJs
wear again. Got them from Steve of the Elan Factory. Nice workmanship and
they look bullet proof! And with my heavy right foot .....

Cheers.

----- Original Message -----
From: "tdafforn" <***@***.***>

Sent: Wednesday, November 12, 2003 2:24 AM
Subject: [LotusElan.net] Sliding spline driveshafts


Hi All,
does anyone know the pros and cons of these vs cvs?
Cheers
Tim

[elanplus2]

Hi All,

I am researching the benefits of these at the moment and I have the following comments form the various global suppliers of these conversions. I trust the above comments help with your choice. I think all of the above products are good, and I have read many rave reviews of the Tony Thompson product, while many rate the service of Steve Taylor at the Elan Factory. Steve has been mage helpful to me over the last few weeks sourcing other parts.

No allegiance to any of the above companies bla bla bla

Ray





-----Original Message-----
From: pat Thomas [mailto:***@***.***

Thank you for your enquiry the drive shafts we supply are the CV based design no modifications are required to fit them to the car, they come completewith all nuts, bolts, fixings etc with instructions to fit. The price is ?393.00 per pair plus carriage and VAT

Pat Thomas
KELVEDON MOTORS/KELSport





From: TTRacing [mailto:***@***.***
Subject: Re: Plus 2 CV driveshaft conversion sets

Yes we do sell these in UJ & CV type. We favour the simplicity & lightnessof the UJ system. Our shafts with U/J have big greaser U/J's & non stick space age Teflon coated splines. No modifications are needed. Price is ?380.00 plus a bolt kit ?18.00.

U J angle depends on U J spec and yoke spec. However elans and plus 2 have too much droop - thanks to cheap bought in shockabsorber, not dedicated unit. We commissioned Koni Holland to make us special droop restricted rear shocks. ?250pair. There is NO problem on compression. On droop, unless you go airborne there is no practical problem with U J or CV. You pay your money and take your choice! I prefer the simplicity of the U J and the easy installation, CV system, heavier, expensive when a CV fails - they are not Gods gift as some people mistakenly think.

Also alot of unqualified people quote alot of rubbish on the internet. We have sold over 200 sets of our centre shafts and people seem very happy to recommend them to other owners. By all means telephone me to discuss further, i am always happy to talk technical, but i am not very good at emails! 01664-812454 UK time 9am to 6pm
Kind Regards
Tony Thompson





From: paul matty [mailto:***@***.***

We can offer both types of driveshaft conversion. They are:
1 x CV based drive shaft kit ?385.00 (not for competition use) OR
1 x Sliding spline UJ drive shaft kit for road and competition use ?400.00
Prices are +VAT. We can usually supply either kit in 3-4 days.

Regards
Roger




-----Original Message-----
From: Steve Taylor [mailto:***@***.***

Hi Ray
Yup we sell CV driveshaft conversion kit Please see attachment These kits are available for the Elan and Elan +2
They are available in two forms
a) Brand new CV joints @ AUS $1350-00 (excluding GST)
b) Second hand/reco joints which have been dismantled/cleaned/inspected then repacked with moly grease @ AUS 1150-00 (excluding GST)

I currently have Elan CV driveshaft kits in stock Elan + 2 driveshaft kits are about two weeks delivery at the moment

Regards, Steve





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[+2R160]

I fitted the TTR sliding spline driveshafts to my +2 and have been
very happy with them. There were various reasons for going with that
option, but primarily because I consider these more of a period
upgrade than CV's (although Colin Chapman apparently disliked sliding
spline shafts, they were homologated for the elan and fitted instead
of doughnuts to the later versions of the 26R racing elans). I also
plan to use my car for historic competition and so it seemed more
appropriate to fit these.

They are beautifully engineered and easy enough to fit with the TTR
bolt kit. They may however prove more hassle in use than CV's on a
higher mileage car than my own (you are supposed to split and grease
the splines every so often).

You could also consider Spyder (UK) who do a combined cv/doughnut
driveshaft version.

Regards, David.


--- In ***@***.***, "Edwards, Ray" <Ray.Edwards@c...>
wrote:

conversions. I trust the above comments help with your choice. I
think all of the above products are good, and I have read many rave
reviews of the Tony Thompson product, while many rate the service of
Steve Taylor at the Elan Factory. Steve has been mage helpful to me
over the last few weeks sourcing other parts.

they come complete with all nuts, bolts, fixings etc with
instructions to fit. The price is ?393.00 per pair plus carriage and
VAT

U/J's & non stick space age Teflon coated splines. No modifications
are needed. Price is ?380.00 plus a bolt kit ?18.00.

dedicated unit. We commissioned Koni Holland to make us special droop
restricted rear shocks. ?250pair. There is NO problem on compression.
On droop, unless you go airborne there is no practical problem with U
J or CV. You pay your money and take your choice! I prefer the
simplicity of the U J and the easy installation, CV system, heavier,
expensive when a CV fails - they are not Gods gift as some people
mistakenly think.

seem very happy to recommend them to other owners. By all means
telephone me to discuss further, i am always happy to talk technical,
but i am not very good at emails! 01664-812454 UK time 9am to 6pm



1150-00 (excluding GST)

[twincamman]

I just came out from under the ?lan and noted when I pulled the wheel to get up both wheels rotated the same way soooo I tried to stop one wheel from moving and rotated the other [ im easily amused you see] and no matter what both wheels rotate the same way a welded diff? did lotus make a posi diff? WEAK MINDS WANT TO KNOW ANY ONE HELP? ed law
----- Original Message -----
From: plus2r160
To: ***@***.***
Sent: Tuesday, November 11, 2003 9:58 PM
Subject: [LotusElan.net] Re: Sliding spline driveshafts


I fitted the TTR sliding spline driveshafts to my +2 and have been
very happy with them. There were various reasons for going with that
option, but primarily because I consider these more of a period
upgrade than CV's (although Colin Chapman apparently disliked sliding
spline shafts, they were homologated for the elan and fitted instead
of doughnuts to the later versions of the 26R racing elans). I also
plan to use my car for historic competition and so it seemed more
appropriate to fit these.

They are beautifully engineered and easy enough to fit with the TTR
bolt kit. They may however prove more hassle in use than CV's on a
higher mileage car than my own (you are supposed to split and grease
the splines every so often).

You could also consider Spyder (UK) who do a combined cv/doughnut
driveshaft version.

Regards, David.


--- In ***@***.***, "Edwards, Ray" <Ray.Edwards@c...>
wrote:

conversions. I trust the above comments help with your choice. I
think all of the above products are good, and I have read many rave
reviews of the Tony Thompson product, while many rate the service of
Steve Taylor at the Elan Factory. Steve has been mage helpful to me
over the last few weeks sourcing other parts.

they come complete with all nuts, bolts, fixings etc with
instructions to fit. The price is ?393.00 per pair plus carriage and
VAT

U/J's & non stick space age Teflon coated splines. No modifications
are needed. Price is ?380.00 plus a bolt kit ?18.00.

dedicated unit. We commissioned Koni Holland to make us special droop
restricted rear shocks. ?250pair. There is NO problem on compression.
On droop, unless you go airborne there is no practical problem with U
J or CV. You pay your money and take your choice! I prefer the
simplicity of the U J and the easy installation, CV system, heavier,
expensive when a CV fails - they are not Gods gift as some people
mistakenly think.

seem very happy to recommend them to other owners. By all means
telephone me to discuss further, i am always happy to talk technical,
but i am not very good at emails! 01664-812454 UK time 9am to 6pm



1150-00 (excluding GST)

[khamai]

If money is not an object, then CVs are superior.

One down particular downside with splines is that they tend to "lock"
up in high torque situations. The high torque binds the splines and
prevents them from sliding. This effectively makes the half shaft a
solid axle and creates a situation where the suspension is less able
to cope with bumps. Particularly nasty if you've got a bumpy corner
exit.

Kiyoshi


--- In ***@***.***, "tdafforn" <tim.dafforn@m...> wrote:

[tdafforn]

What I am not sure about is why they use sliding splines in racing
Elans? Surely the lock up would be a bad bad thing?
Cheers
Tim
--- In ***@***.***, "hkhamai" <khamai@t...> wrote:

[khamai]

Tim,
Frankly I don't understand either... The only explainations I have is
that splines have been around a lot longer and CV were in the early
days suspect in high torque applications, or splines are cheaper, or
the vintage race inspectors see CVs and know immediately you're not
period correct. Only the later would be for me a valid reason today.

Kiyoshi

--- In ***@***.***, "tdafforn" <tim.dafforn@m...> wrote:

[twincamman]

sorry kioshi but fia 127 build sheet allows spline drive on ?lans in 1962 ed law
----- Original Message -----
From: hkhamai
To: ***@***.***
Sent: Wednesday, November 12, 2003 5:58 PM
Subject: [LotusElan.net] Re: Sliding spline driveshafts


Tim,
Frankly I don't understand either... The only explainations I have is
that splines have been around a lot longer and CV were in the early
days suspect in high torque applications, or splines are cheaper, or
the vintage race inspectors see CVs and know immediately you're not
period correct. Only the later would be for me a valid reason today.

Kiyoshi

--- In ***@***.***, "tdafforn" <tim.dafforn@m...> wrote:

[Arno Church]

Because they were stronger than donuts with no wind up but, mainly, becauseCV joints were not vailable at the time
Arno
---- Original Message -----
From: tdafforn
To: ***@***.***
Sent: Wednesday, November 12, 2003 10:26 PM
Subject: [LotusElan.net] Re: Sliding spline driveshafts


What I am not sure about is why they use sliding splines in racing
Elans? Surely the lock up would be a bad bad thing?
Cheers
Tim
--- In ***@***.***, "hkhamai" <khamai@t...> wrote:

[elj221c]

Also, less suspension travel reduced the extremes of angularity. UK
race circuits are also generally pretty smooth compared to the
average A road!

Roy,
'65 S2