Carbon propshafts
#1
Rotaryart
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Carbon propshafts
New range of carbon propshafts available soon.
http://www.rotaryart.uk.com/acatalog/TORQline_.html
http://www.rotaryart.uk.com/acatalog/CTG-TJuner.pdf
http://www.rotaryart.uk.com/acatalog...g_2drx7_2dprop
Has anyone on here use any carbon props?
http://www.rotaryart.uk.com/acatalog/TORQline_.html
http://www.rotaryart.uk.com/acatalog/CTG-TJuner.pdf
http://www.rotaryart.uk.com/acatalog...g_2drx7_2dprop
Has anyone on here use any carbon props?
#2
RX-7 Bad Ass
iTrader: (55)
$2000? Yeah....
The stock driveshaft is actually quite light. The only reason I could see running a CF driveshaft is if you were doing VERY high horsepower drag racing, and wanted a driveshaft that would splinter if it broke for safety reasons. Besides that, it's a waste of money.
It's neat that they have it, though.
Dale
The stock driveshaft is actually quite light. The only reason I could see running a CF driveshaft is if you were doing VERY high horsepower drag racing, and wanted a driveshaft that would splinter if it broke for safety reasons. Besides that, it's a waste of money.
It's neat that they have it, though.
Dale
#7
Mr. Links
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Originally Posted by whitey85mtu
Didn't JimLab refute any claims that you will see a noticable increase in engine responsiveness/horsepower because the stock driveshaft is so light and not too large in diameter, and that the only purpose of having a light driveshaft is really to remove weight from the vehicle?
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#10
Originally Posted by whitey85mtu
Didn't JimLab refute any claims that you will see a noticable increase in engine responsiveness/horsepower because the stock driveshaft is so light and not too large in diameter, and that the only purpose of having a light driveshaft is really to remove weight from the vehicle?
- https://www.rx7club.com/v-8-powered-rx-7s-299/custom-driveshafts-310681/
And here are two threads where some of the forum gurus (including Max Cooper) essentially said the same thing:
- https://www.rx7club.com/3rd-generation-specific-1993-2002-16/carbon-fiber-driveshaft-59057/
- https://www.rx7club.com/rotary-car-performance-77/carbon-driveshaft-180476/
~Ramy
#12
It Just Feels Right
Originally Posted by dgeesaman
I tend to agree. Thankfully I haven't seen any (custom or otherwise) in use.
Dave
Dave
#13
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about the driveshafts, the main reason to replace the OEM with a CF one would be:
1) safety
2) weight
3) throttle response
but if the OEM driveshaft is already lightweight and 1-pc, then 1) and 2) are already taken care of. so the only other reason to get one (other than just "i have a CF driveshaft") would be for safetly. a lot of STi guys are going to a 1-pc CF driveshaft because the stock one is 2-pc and the CF is 11-13 lbs lighter. but for RX7's, unless you're building a high-power drag car, or a track car with lots of safety in mind, or just trying to blow money... there's no reason to get one. personally, some day i'd like to get one just for safety reasons, but to each their own.
btw, ACPT makes them for STi's and i'm pretty sure RX7's, too (they have a pic of a drag 3rd gen on their website). the ones for STi's are about $1200 retail, and i'd imagine RX7's are a little cheaper because they've been around a bit longer.
1) safety
2) weight
3) throttle response
but if the OEM driveshaft is already lightweight and 1-pc, then 1) and 2) are already taken care of. so the only other reason to get one (other than just "i have a CF driveshaft") would be for safetly. a lot of STi guys are going to a 1-pc CF driveshaft because the stock one is 2-pc and the CF is 11-13 lbs lighter. but for RX7's, unless you're building a high-power drag car, or a track car with lots of safety in mind, or just trying to blow money... there's no reason to get one. personally, some day i'd like to get one just for safety reasons, but to each their own.
btw, ACPT makes them for STi's and i'm pretty sure RX7's, too (they have a pic of a drag 3rd gen on their website). the ones for STi's are about $1200 retail, and i'd imagine RX7's are a little cheaper because they've been around a bit longer.
Last edited by telum01; 07-17-06 at 02:58 PM.
#14
Mr. Links
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Originally Posted by telum01
about the driveshafts, the main reason to replace the OEM with a CF one would be:
https://www.rx7club.com/showpost.php...0&postcount=24
#15
Moderator
iTrader: (7)
Originally Posted by mibad
Why? Isn't carbon fiber intended to replace structural steel? Seems like a better use than dashboards.
Another issue is that CF is more compliant (less rigid) than steel, which is one reason it's ideal for driveshafts. It's also one reason why it's not good for PPFs.
Dave
#16
FD title holder since 94
iTrader: (1)
I have the ACPT CF driveshaft and didn't notice a difference like I did when I did the lighter flywheel. The weight of the stock is 14 and the ACPT was 11. Another reason would be the serviceable u-joints on the CF shaft since I don't think you can on the stock shaft. Not 100% sure about the stock shaft, I just remember a post or e-mail from the big list days that the stock shaft's u-joints are serviceable.
Tim
Tim
Last edited by Tim Benton; 07-17-06 at 05:48 PM.
#19
Racing Mechanic
I know that Vividracing have the CF for sale in USA
http://www.vividracing.com/catalog/p...oducts_id/9398
They claim that if you change the shaft you can get 5% more power.
http://www.vividracing.com/catalog/p...oducts_id/9398
They claim that if you change the shaft you can get 5% more power.
#20
FD title holder since 94
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Originally Posted by Tim Benton
I have the ACPT CF driveshaft and didn't notice a difference like I did when I did the lighter flywheel. The weight of the stock is 14 and the ACPT was 11. Another reason would be the serviceable u-joints on the CF shaft since I don't think you can on the stock shaft. Not 100% sure about the stock shaft, I just remember a post or e-mail from the big list days that the stock shaft's u-joints are serviceable.
Tim
Tim
the stock shaft's u-joints are NOT serviceable. Sorry for the typo.
Tim
#22
Rotaryart
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Fitted the first prop yesterday and it was fine, just needed a small amount shaved off the joints as there is only 2-3mm clearence.
By fitting it we came up with version 2, which we are looking in to. Will make a big saving in wieght over version 1.
Version 2 could save up to 36% over stock prop.
Although even a 1kg saving dosnt sound much in terms of inertia, that equates to 50kg of wieght saving at launch. So you can the obvious advantage, especially if we end up with a 3kg saving.
You then have the added benfits of being kinder to you diffs, g/boxes, braking become better and safer if it were to break, metal ones have been known to come through the floor pan or dig in to the road/track and flip the car.
By fitting it we came up with version 2, which we are looking in to. Will make a big saving in wieght over version 1.
Version 2 could save up to 36% over stock prop.
Although even a 1kg saving dosnt sound much in terms of inertia, that equates to 50kg of wieght saving at launch. So you can the obvious advantage, especially if we end up with a 3kg saving.
You then have the added benfits of being kinder to you diffs, g/boxes, braking become better and safer if it were to break, metal ones have been known to come through the floor pan or dig in to the road/track and flip the car.
#23
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Originally Posted by CMonakar
I was also told the stock joints are not serviceable by the shop that is making a custom short shaft for my 20b project.
#24
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Just spoken to them and version 2 looks like go.
Will be approx 37% lighter than stock, will be a smaller diameter than version 1, new ends are going to be purpose made as oppossed to what is available.
Will make it slightly dearer but worth the addition savings in size and weight.
http://www.rotaryart.uk.com/acatalog/TORQline.html
Will be approx 37% lighter than stock, will be a smaller diameter than version 1, new ends are going to be purpose made as oppossed to what is available.
Will make it slightly dearer but worth the addition savings in size and weight.
http://www.rotaryart.uk.com/acatalog/TORQline.html
#25
Will u do me a kindness?
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Originally Posted by g11ary
Just spoken to them and version 2 looks like go.
Will be approx 37% lighter than stock, will be a smaller diameter than version 1, new ends are going to be purpose made as oppossed to what is available.
Will make it slightly dearer but worth the addition savings in size and weight.
http://www.rotaryart.uk.com/acatalog/TORQline.html
Will be approx 37% lighter than stock, will be a smaller diameter than version 1, new ends are going to be purpose made as oppossed to what is available.
Will make it slightly dearer but worth the addition savings in size and weight.
http://www.rotaryart.uk.com/acatalog/TORQline.html