hallllllo
anyone running carbon fibre driveshafts or have any opinions on them.
seem like a pretty good idea to me
"carbon fiber driveshaft that allows a 1000 RPM increase in the engine speed and gives the engine a chance to work at its’ power peak"
"You can achieve rear wheel horsepower gains of more than 5%"
"Carbon fiber offers you more strength to resist extreme torque than steel with about half the weight. Just like the common use of the lightweight clutch and flywheel units, a lightweight driveshaft allows more of your engine’s power to be applied to the ground during acceleration."
opinions pleeeeeeeeeease! :3gears-lh
Gary at Rotaryarts does a carbon fibre Propshaft which will give the same type of benefits but its expensive
errr....carbon prop.... ive got no doubts it offers some gains but in the real world, its a massive waste of money
Trust do one for it.
10KG weight saving over original prop for the weight savers and good for the drag users as \'splinters\' rather than breaking shards of steel thru the floor pan :2eek if the worst was to happen.
Also hear comparisons and engine response similar to standard and lightened flywheels, if you find some \'reasonable\' priced props :chat post them here
10kgs and it\'s spinning isn\'t that like loosing 40kgs?
I\'m pretty sure you don\'t get carbo drive shafts, you normaly can get titanium.
Torqline do em for, like, Scoobys and other shopping cars but dunno if they do an RX fitment. Seen photos of one that failed, it\'s like it just explosively unwound itself so all the fibres bell out like a brush, but cos they\'re still attatched either end, they don\'t go flying off everywhere. Think the biggest gains come in increased responsiveness through reduced weight in the drivetrain, therefore much less inertia to overcome to start or stop it spinning (although stopping it spinning would be momentum, I guess, y\'know what I mean). You\'re not suddenly gonna gain extra horsepower, but it\'ll stop you losing the hosres you did have to start with. I suppose it\'s similar to lighteneing the flywheel in effects
You\'d want a perspex trans tunnel so you could admire it, though, for all that money!
Your money would be far better spent on lightweight wheels.
According to TORQline you save just over 2kg\'s - last I checked they where about £1500 :eek:
As dave says, £1500 spent on wheels would save you more weight & is still rotating mass.
There was a very good write up in Jtuner. The advantage of the shaft is that it will hold a great deal more torque and will flex more under initial load. This reduces the first bite of load on the transmission making it softer on components and hence less likely to destroy other bits. Plus better chance for tyres to grip off the line.
Shaun
We looked at the props, and driveshafts....and there really is no point. Weight really isn\'t the main reason for swapping...most of the weight is in the middle, and the radius of both are very small, so inertia wont play a huge part, especially not compared to losing weight from the outside of a set of wheels.
The main advantage is twist....you will get less twist from a carbon item, so that initial "foot down" moment will cause more power to go to the rear wheels rather than been caught up in a twisting moment....bit like picking something up with an elastic band....some of the effort is going to go into expanding the band, once its got to its point of maximum stretch then you can pick it up. In the same way the Carbon items will also be less prone to snapping.
Being that the rate of failure of a standard prop and shafts is near zero thats not a good reason to get some.
So you might save at most 2kgs...but its as low as possible so why bother? Have a good poo before you get in your car first!
Quote from: hammyhallllllo
anyone running carbon fibre driveshafts or have any opinions on them.
seem like a pretty good idea to me
"carbon fiber driveshaft that allows a 1000 RPM increase in the engine speed and gives the engine a chance to work at its’ power peak"
"You can achieve rear wheel horsepower gains of more than 5%"
"Carbon fiber offers you more strength to resist extreme torque than steel with about half the weight. Just like the common use of the lightweight clutch and flywheel units, a lightweight driveshaft allows more of your engine’s power to be applied to the ground during acceleration."
opinions pleeeeeeeeeease! :3gears-lh
I take it you got these quotes from america,as they call the propshaft the driveshaft,as already said they are expensive and are really only for the hardcore cars on a diet.Driveshafts here in england can be upgraded to chromoly units,but are more for strenghtening than weight saving.:Thumbsup!
Pretty much dealt with above and the only real advantage I can see for a road / track car is a lowered unsprung weight which in turn will help the suspension operate better, but stock shafts will be fine on all but mental power FD\'s providing your not dragging,
And for a Drag car, "IF" these shafts are stronger then the advantage would be there, however even then super strong shafts are not always the answer.
I raced a Ford powered Mini and succeeded in snapping 2 drive-shafts in one day at Lydden Hill in the course of the day,
These were lots of money shafts from a company called Jack Knight, I then found that early 850cc Minis had softer more mallible shafts so I used these instead and changed them every 4 races and never broke another over the next 4 years so stronger isn\'t always better.
One last thing, personally I wonder after removing a carbon fiber prop from an RX-8 which would kill you if it fell on yer ed, that many of these "claims" are a little exaggerated and would replace the word claim for gimmick in many cases!