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Old 08-22-2013, 06:26 AM   #421
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Originally Posted by ongbenghui View Post
Personally... I used to do that for my old MR4-TC-SD.

But I find that I cannot use straight carbon fiber rod for this purpose.
At high torque, the carbon fiber rod will split easily. You will need woven carbon fiber rod.

You can see that the original TC3 carbon fiber rod used woven carbon fiber, not the straight carbon fiber type.
The original TC3 shafts were fiberglass, not Carbon fiber. Woven carbon is not required. 1/12th scall cars have used striaght pulled carbon shafts for years. Before going on hiatius, I made 150+ of these shafts for TC3, TC4, HPO pro4 Yokomo SD, and Tamiya shaft drive cars without hearing of one spliting. The key is to have a little bit of float in between the front and rear drive cups. With the upper/lower carbon fiber chassis cars, this was less of a concern.

ANwyay, A 4mm CF tube is probably too small to work properly as there may not be enough glue surface to hold the tips in place. I have 2 people that said they are willing to try out a conversion part so we can go from there and see what happens.
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Old 08-22-2013, 10:36 AM   #422
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What are the main advantages to replace the Awesomatix original alloy center shaft by a carbon one?

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Old 08-22-2013, 11:58 AM   #423
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What are the main advantages to replace the Awesomatix original alloy center shaft by a carbon one?

Thanks,
G-rem
From what I have been told, the Awesomatix original alloy center shaft is quite thin (approx 4mm) and rather heavy (approx 10g). A carbon part would be appox 5-6g finsihed. This would allow quicker acceleration as well as less flexing at high speed (carbon is stiffer than aluminum). I had customers years back find htat the 4.5mm TC3 shaft would flex so much at high speeds, that it would be ejected from the car. The carbon part fixed this. I plan to make a test part for a Awesomatix racer to check for fitting issues and report on the results.

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Old 08-22-2013, 12:22 PM   #424
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^the only issue I see is the possible binding of the steering rack if the proposed drive shaft will be thicker than the stock. Clearance from the steering to the drive shaft is really close at the moment.
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Old 08-22-2013, 12:26 PM   #425
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Awesomatix A700 center shaft weight is 7g.
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Old 08-22-2013, 01:00 PM   #426
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The Awesomatix website claims the shaft weighed 10grams, but it felt a little lighter than that... I guess the conversion will be in the 4.5gram range....
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Old 08-22-2013, 06:41 PM   #427
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Originally Posted by bertrandsv87 View Post
The Awesomatix website claims the shaft weighed 10grams, but it felt a little lighter than that... I guess the conversion will be in the 4.5gram range....
I double checked and it is 7gm just like Oleg said...
I still have my R2 I brought the hop up carbon fiber shaft .and it weight only 5gm
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Old 08-26-2013, 12:06 PM   #428
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Fresh batch of TC4 shafts should finish up tonight. If interested, PM or email for details.

Erik
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Old 08-26-2013, 12:15 PM   #429
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Still have any pro4 shafts for sale?
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Old 08-26-2013, 12:43 PM   #430
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No problem Erik, and thanks again....
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Old 08-26-2013, 12:58 PM   #431
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Still have any pro4 shafts for sale?
I cannot order donor shafts for the pro4 any more. I can still do a conversion if you have a donor part (new or used but straight). PM or email if interested and I can provide details.

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Old 08-27-2013, 11:43 PM   #432
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Could you make a center drive shaft for the Tekno SCT410?
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Old 08-28-2013, 12:01 AM   #433
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With a 4mm CF shaft it might be necessary to insert the shaft tips twice as far into the CF tube to get the glue to hold properly, and thereby solving all the clearance issues.......
Quote:
Originally Posted by ewippler View Post
The original TC3 shafts were fiberglass, not Carbon fiber. Woven carbon is not required. 1/12th scall cars have used striaght pulled carbon shafts for years. Before going on hiatius, I made 150+ of these shafts for TC3, TC4, HPO pro4 Yokomo SD, and Tamiya shaft drive cars without hearing of one spliting. The key is to have a little bit of float in between the front and rear drive cups. With the upper/lower carbon fiber chassis cars, this was less of a concern.

ANwyay, A 4mm CF tube is probably too small to work properly as there may not be enough glue surface to hold the tips in place. I have 2 people that said they are willing to try out a conversion part so we can go from there and see what happens.
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Old 08-28-2013, 12:36 PM   #434
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how much are the TC4 shafts?
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Old 08-28-2013, 07:13 PM   #435
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how much are the TC4 shafts?
$38 shipped for TC4 shafts

$28 shipped if you have a donor (new or used but straight) for me to convert.

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