Half shafts and cv thingies.

[SILICONEKID 345HP 12.03]

Hello I want the stronger half shafts with those things which go on the ends .
Im aware davmac do them and another place do them cheaper .

Can anyone givee me advice .thanks

[N7GTX]

Peter will tell you where to get the stronger driveshafts from.
I'd definitely recommend Prolinx for the 'thingies' - from ordinary, through uprated, to race, to ultimate race so a good choice.

http://www.prolinx.biz/pages/Products/ViewCategory...

[SILICONEKID 345HP 12.03]

I dont have a clue what I am buying.

[carsy]

Daz, when i bought mine from prolinx the chap was really helpfull. Just tell him what its for, he'll know what you need.

[SILICONEKID 345HP 12.03]

Do prolnk sell the shafts ?

[N7GTX]

Some good info in this thread.

https://www.pistonheads.com/gassing/topic.asp?h=0&...

http://davemacprops.co.uk/products.html

[Classic Chim]

Your going for records against the clock if your going all out for these stronger shafts.
Fair bloody play

[SILICONEKID 345HP 12.03]

Are the shafts different lengths?
I have gone from gkn to btr so they might be shorter .

[Classic Chim]

So get the ones that are for the BTR and will be the correct length.
Standard later ones without the circlip cut out are upto the job as much as the CV’s if you ask me so unless hardcore abuse is expected they are a good option

[phazed]

Classic Chim said:

So get the ones that are for the BTR and will be the correct length.
Standard later ones without the circlip cut out are upto the job as much as the CV’s if you ask me so unless hardcore abuse is expected they are a good option

Daz, if you have the shouldered half shafts already fitted then you are wasting your money buying stronger half shafts with your engine build.

I have these standard half shafts fitted and they stand up to huge abuse on the strip.

Scenario. Hot drag tyres and a warm track late in the day, maximum revs bouncing off the limiter, 450ftlbs of torque and sidestepping the clutch from a standing start.

With this huge abuse the driveshafts never broke but a stub axle did!

Go check your car first. If I remember correctly these shafts were fitted from about 98 onwards.

[SILICONEKID 345HP 12.03]

At least the cv thingies need replacing and are original.

There is play which is contributing towards drive train slack .

I need good quality cv thingies and not sure about the shafts .
Im a little put off spending 900 quid at davmacs.
Advice please.

[SILICONEKID 345HP 12.03]

phazed said:

Daz, if you have the shouldered half shafts already fitted then you are wasting your money buying stronger half shafts with your engine build.

I have these standard half shafts fitted and they stand up to huge abuse on the strip.

Scenario. Hot drag tyres and a warm track late in the day, maximum revs bouncing off the limiter, 450ftlbs of torque and sidestepping the clutch from a standing start.

With this huge abuse the driveshafts never broke but a stub axle did!

Go check your car first. If I remember correctly these shafts were fitted from about 98 onwards.

Do you have a picture of a shouldered half shaft ? If they are do I just swop the cv joints ?

[macdeb]

My 2000 year car did not have 'shouldered' as described half shafts and I've not seen a standard car with them, it had the inner circlips (the weak point). I went for the best that are 'Dave Mac' with a life long warranty. Don't get 'racefailed' they are shyte as is the warranty on them.

[SILICONEKID 345HP 12.03]

Are you saying buy the best from davmac ?

[phazed]

macdeb said:

My 2000 year car did not have 'shouldered' as described half shafts and I've not seen a standard car with them, it had the inner circlips (the weak point). I went for the best that are 'Dave Mac' with a life long warranty. Don't get 'racefailed' they are shyte as is the warranty on them.

Strange that Mac. Mine is a 99 car and has the shouldered driveshafts.

[phazed]

Daz, check what shafts your car has first befor considering spending any more money. You can still renew the CV joints .

[Steve_D]

SILICONEKID 345HP 12.03 said:

Do you have a picture of a shouldered half shaft ? If they are do I just swop the cv joints ?

Can't find a picture at the moment so will try and explain.
Imagine a broom handle with some soft rubber sleeving over it. Grip the handle with your fists about an inch apart. Push your fists together and the sleeving will squeeze and form a ridge or shoulder. This is the same if you did this with a red hot shaft of steel. (forging)

A drive shaft has splines machined on the ends which the CV joint fits onto but you need a way of ensuring the CV does not go too far down the shaft. The cheapest way to do this is to cut a groove around the shaft and fit a circlip. The CV fits up against this clip.
On the higher quality/strength shaft the CV fits against the forged ridge described earlier.

As you can imagine the forged shoulder is way stronger than having cut part way through the shaft for the circlip.

The same CV will fit on either design of shaft.

Steve

[Sardonicus]

Steve means this idea these are stronger Daz ................................................................................................................................ These are weaker

Edited by Sardonicus on Monday 27th November 13:03

Edited by Sardonicus on Monday 27th November 13:04

[Classic Chim]

What excellent info.
I didn’t think to look as I have a 2000 car but assumed mine are the stronger ones,, better get looking.

Edited by Classic Chim on Monday 27th November 18:14

[N7GTX]

TVR Parts claim these are uprated driveshafts:

https://tvr-parts.com/tvr-parts/part-details/tvr-t...