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Single belt TC, any advantage?

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Single belt TC, any advantage?

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Old 11-01-2018, 09:01 AM
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Default Single belt TC, any advantage?

Hi everyone:
I just want to ask if anyone had driven before single belt TCs?
EG: Spice BD7 single belt conversion kit, TA07, "coming soon" TA07MS, etc
Could explain to me any difference and advantage compares with conventional 2 belts TCs, specially in blinky class, carpet and asphalt, please?

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Old 11-01-2018, 09:55 AM
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Technically, it lets you put the motor, and battery closer to the centerline. The belt(s) still see the same number of pulleys, so the friction is pretty similar. Tension is easier to manage, but you can't have different tension on the front and rear diffs. Single belt needs more structure, so is going to be fractionally heavier, but some weight may be saved as you don't need to build in adjustments at each diff.

The driving factor is with a single belt setup, you can move the motor mount fore and aft, without needing new belts for each position.

It's just "different". I don't think you can pin an advantage on it.
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Old 11-01-2018, 09:58 AM
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I own and have raced the TA07. It's very efficient although I'm not sure if it was actually better. The design does allow for some neat options with motor position and belt tension (no eccentric cams required for the diffs).
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Old 11-01-2018, 10:01 AM
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It's too bad that Tamiya hasn't fully taken advantage of the design. The TA07 uses too many standard TC parts.
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Old 11-01-2018, 10:10 AM
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Originally Posted by DavidNERODease View Post
I own and have raced the TA07. It's very efficient although I'm not sure if it was actually better. The design does allow for some neat options with motor position and belt tension (no eccentric cams required for the diffs).
Diff height is a tuning tool, so it seems that we lost an adjustment with the TA07 platform.

(I'm running a TA07 with a PSM chassis and Eagle Racing bulkheads)
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Old 11-01-2018, 10:26 AM
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Yeah, the diff's are very high on the stock TA07. I'm eyeballing that Exotek conversion. I really like the single belt design - just wish Tamiya would go all out with the concept.
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Old 11-01-2018, 11:32 AM
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Another advantage is that the belt runs down the centerline of the car. The belt doesn't introduce any torsional forces to the chassis.
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Old 11-01-2018, 12:01 PM
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Originally Posted by Xpress View Post
Another advantage is that the belt runs down the centerline of the car. The belt doesn't introduce any torsional forces to the chassis.
It could but it doesn't unfortunately. A single belt car could have a perfectly centered belt with super narrow bulkheads, perfect flex, etc, etc. A quite a bit of potential left on the drafting board with the TA07.
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Old 11-01-2018, 01:52 PM
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Originally Posted by DavidNERODease View Post
Yeah, the diff's are very high on the stock TA07. I'm eyeballing that Exotek conversion. I really like the single belt design - just wish Tamiya would go all out with the concept.
I don't about you but I just ordered the Exotek conversion kit for my TA07...you never know it could be better
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Old 11-01-2018, 02:02 PM
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Originally Posted by DavidNERODease View Post
Yeah, the diff's are very high on the stock TA07. I'm eyeballing that Exotek conversion. I really like the single belt design - just wish Tamiya would go all out with the concept.
This will be the TRF420 next year then...
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Old 11-01-2018, 02:37 PM
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Originally Posted by OVA View Post
I don't about you but I just ordered the Exotek conversion kit for my TA07...you never know it could be better
It is out already? how much is it?
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Old 11-01-2018, 02:49 PM
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Losi had a single belt system for their XXX-S. Worked pretty good back then.

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Old 11-01-2018, 04:18 PM
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Kyosho KX-One also had a single belt car......it sucked. Too much flex everywhere. And I still have it. TOP Racing has a conversion for one of their cars but where did that company go?
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Old 11-01-2018, 05:38 PM
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Originally Posted by chensleyrc1 View Post
Losi had a single belt system for their XXX-S. Worked pretty good back then.


I loved my XXX-S
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Old 11-01-2018, 06:32 PM
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Originally Posted by Speed Chaser View Post
It is out already? how much is it?
120.00 us
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