Carbon Fiber Driveshaft

Old 12-11-2014, 02:24 PM
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Carbon Fiber Driveshaft

Hey there RDX community, I got an approval for a two piece carbon fiber driveshaft from Driveshaft shop. The piece will look somethings like this. Most of the work will be custom or one off.

The Driveshaft Shop | Home page

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Old 12-11-2014, 03:16 PM
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bummer it wont be the pricing of a used acura RL one.. =(
Old 12-11-2014, 03:21 PM
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No, but it will be closer to the price of a brand new OEM one. And will be made for our car, Win win.
Old 12-11-2014, 05:56 PM
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250... vs 1300... thats huge price gap for a win win =) hahaha
Old 12-11-2014, 06:04 PM
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That's going to make a HUGE difference! Throttle response would be so crisp! Wish I could get one for the TL!
Old 12-11-2014, 06:48 PM
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Originally Posted by bluecarbonfiber
250... vs 1300... thats huge price gap for a win win =) hahaha
250.00 and doesn't fit.
Old 12-11-2014, 07:48 PM
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Man I step away for a couple weeks and Ken is on an R&D spree!!! Exciting!!
Old 12-11-2014, 08:03 PM
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Originally Posted by bluecarbonfiber
250... vs 1300... thats huge price gap for a win win =) hahaha
I think brand new RL propeller shaft is 1609.05.
Old 12-11-2014, 08:07 PM
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Originally Posted by BigHatch
Man I step away for a couple weeks and Ken is on an R&D spree!!! Exciting!!
Got bored and was a little frustrated with shops not caring about use (RDX community). Got turned down by a lot of shops, but didn't stop trying. Got lucky with these shops and plan to venture out more!
Old 12-11-2014, 11:17 PM
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Originally Posted by BigHatch
Man I step away for a couple weeks and Ken is on an R&D spree!!! Exciting!!
Yeah, I wouldn't sleep on this performance forum. Have lots of plans for the RDX!.
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Old 12-11-2014, 11:24 PM
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word
Old 12-12-2014, 03:50 PM
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Originally Posted by d1sturb3d119
That's going to make a HUGE difference! Throttle response would be so crisp! Wish I could get one for the TL!
seriously? how do you figure its not a lite weight flywheel its a driveshaft. we need a hi stall torque converter to get a big difference in acceleration. I'm guessing the weight isn't more then 10 pounds difference if the yokes are cast iron. if they are made of aluminum 15.

having just poo pooed it. if I had disposable income I'd get it for sure. as a friend of mine used to say every ounce counts.
Old 12-12-2014, 04:25 PM
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Originally Posted by TheWrench116
seriously? how do you figure its not a lite weight flywheel its a driveshaft. we need a hi stall torque converter to get a big difference in acceleration. I'm guessing the weight isn't more then 10 pounds difference if the yokes are cast iron. if they are made of aluminum 15.

having just poo pooed it. if I had disposable income I'd get it for sure. as a friend of mine used to say every ounce counts.


Torque converter is coming next, but it will be cool to see what the carbon driveshaft does before the upgrade TQ converter.
Old 12-12-2014, 04:50 PM
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Originally Posted by TheWrench116
seriously? how do you figure its not a lite weight flywheel its a driveshaft. we need a hi stall torque converter to get a big difference in acceleration. I'm guessing the weight isn't more then 10 pounds difference if the yokes are cast iron. if they are made of aluminum 15.

having just poo pooed it. if I had disposable income I'd get it for sure. as a friend of mine used to say every ounce counts.
stock is about 35+ lbs.. the carbon is probably around 10 so in actuality your gaining about 20hp loss in rotation mass which is pretty good its a noticeable gain either way..
Old 12-12-2014, 04:57 PM
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Originally Posted by TheWrench116
seriously? how do you figure its not a lite weight flywheel its a driveshaft. we need a hi stall torque converter to get a big difference in acceleration. I'm guessing the weight isn't more then 10 pounds difference if the yokes are cast iron. if they are made of aluminum 15.

having just poo pooed it. if I had disposable income I'd get it for sure. as a friend of mine used to say every ounce counts.
Throttle response, less unsprung weight and less mass for your motor to move. Its going to be a noticeable gain.
Old 12-12-2014, 08:14 PM
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A good torque converter would be huge, but at that point may as well look into a shorter final drive as well. If you want acceleration, there's no need to have a 1st gear that go to 50 mph, or a 3rd that needs over a mile of highway to top out!
Old 12-12-2014, 08:43 PM
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Originally Posted by d1sturb3d119
Throttle response, less unsprung weight and less mass for your motor to move. Its going to be a noticeable gain.
I agree.
Old 12-12-2014, 08:47 PM
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Originally Posted by Tomtwtwtw
A good torque converter would be huge, but at that point may as well look into a shorter final drive as well. If you want acceleration, there's no need to have a 1st gear that go to 50 mph, or a 3rd that needs over a mile of highway to top out!
The high stall converter would allow bigger cams to come alive during the power band, however, for those of you with stock cams the stock converter should suffice.
Old 12-12-2014, 10:45 PM
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how much would this drive shaft be $$
Old 12-13-2014, 08:06 AM
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Here are some price ranges: The Driveshaft Shop | Home page
Old 12-13-2014, 01:50 PM
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Old 12-13-2014, 02:40 PM
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Very interested in this!
Old 12-13-2014, 04:55 PM
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Originally Posted by Tomtwtwtw
A good torque converter would be huge, but at that point may as well look into a shorter final drive as well. If you want acceleration, there's no need to have a 1st gear that go to 50 mph, or a 3rd that needs over a mile of highway to top out!
uh I might be a bit off on how I took that (was it sarcasm?) but another 30mph and id max it out I'm trapping 95 in the quarter so I'm guessing I need 1/2 mile to go from 0-130 ish.
Old 12-13-2014, 08:20 PM
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Originally Posted by d1sturb3d119
Throttle response, less unsprung weight and less mass for your motor to move. Its going to be a noticeable gain.
Wait a sec, since when a driveshaft became a part of unsprung weight?
Old 12-13-2014, 11:07 PM
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Originally Posted by protoRDX
Wait a sec, since when a driveshaft became a part of unsprung weight?
well on a tl at least.
Old 12-13-2014, 11:50 PM
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TL, RL, RDX, same SH system!
Old 12-14-2014, 02:36 PM
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...rotational mass is what appears to have been intended.
Old 12-14-2014, 03:23 PM
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Originally Posted by KenB350z
TL, RL, RDX, same SH system!
Originally Posted by BigHatch
...rotational mass is what appears to have been intended.
The shaft from the diff to the wheels. Your CV's. I wasn't just referring to the drive shaft going to the rear. The shaft going from the diff to the wheels still react to suspension movement. So I'm still referring to unsprung mass in this case. On the 3G that's all that could be really changed. Not necessarily related to the RDX alone.
Old 12-14-2014, 05:38 PM
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I'll let all know the results when it arrives.
Old 12-14-2014, 07:43 PM
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Originally Posted by TheWrench116
uh I might be a bit off on how I took that (was it sarcasm?) but another 30mph and id max it out I'm trapping 95 in the quarter so I'm guessing I need 1/2 mile to go from 0-130 ish.
Some exaggeration perhaps, but my main point is that if you're going for acceleration, you don't need a car geared for a theoretical 250mph top speed.
Old 12-14-2014, 08:14 PM
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I'm fine with my gearing. I have big big plans for a build motor and bigger turbo, so the trans will work perfect.
Old 12-15-2014, 11:02 AM
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Originally Posted by Tomtwtwtw
Some exaggeration perhaps, but my main point is that if you're going for acceleration, you don't need a car geared for a theoretical 250mph top speed.

really that's what it would hit if we topped out 5th gear? holy shit that's nuts...!... I'm good at 150. just saying.
Old 12-15-2014, 11:58 AM
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Originally Posted by KenB350z
I'll let all know the results when it arrives.
soon you will have the ultimate sleeper SUV haha
Old 12-15-2014, 07:41 PM
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Working on it.
Old 12-17-2014, 09:32 AM
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Originally Posted by KenB350z
I'm fine with my gearing. I have big big plans for a build motor and bigger turbo, so the trans will work perfect.
The gearing might but it'll probably shit itself when you throw 400+ ft-lb of torque at it with your build. Pioneer!

Or do you have any plans to reinforce / replace it along with the engine during the build?

edit: Nevermind, saw your signature. haha
Old 12-17-2014, 02:10 PM
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Is there any reason why this wouldnt work with the '05+ RL?
Old 12-17-2014, 02:33 PM
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Originally Posted by GASKICKER
Is there any reason why this wouldnt work with the '05+ RL?
As in why isn't the RL driveshaft being used?
Old 12-17-2014, 02:50 PM
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Originally Posted by KenB350z
As in why isn't the RL driveshaft being used?
Im assuming the rl isnt being used due to cost, why wouldnt this be an option for rl replacement when it stock unit goes bad?
Old 12-17-2014, 03:36 PM
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the RL one is a smidge bigger we based it on photos, havent truly put one on and the midshaft bolt up point looks off too..
Old 12-17-2014, 04:46 PM
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Originally Posted by bluecarbonfiber
the RL one is a smidge bigger we based it on photos, havent truly put one on and the midshaft bolt up point looks off too..
But for a custom build, which I believe is whats happening here, that wouldnt be an issue.
sorry for the derail here, just trying to help my RL friends....and possibly myself down the road.

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