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Old 09-30-2014, 04:04 PM   #46
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I think that needs to be revisited... because shaft would have dominated the world by now if that was true.
I think there's too many hours in development of a bd to make it worthwhile. Not many people would thade in their SD's for an eventually equally fast BD. Also, the shaft layout is part of the "charm".

Or maybe belts are outside of the Russians knowledge base.
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Old 09-30-2014, 04:05 PM   #47
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Drivers dominate the Rc World... Cars don't drive themselves...
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I think that needs to be revisited... because shaft would have dominated the world by now if that was true.
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Old 09-30-2014, 04:21 PM   #48
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Drivers dominate the Rc World... Cars don't drive themselves...
The design of the awesomatix accomplished ironing out the weakness of shaft compared to belt. At this point, I say they are equal. But to say it is superior to belt is an overstatement. Many people think that shaft has a better driveline efficiency. But at high speeds, belts actually get better numbers.
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Old 09-30-2014, 04:26 PM   #49
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Lowering the total mass of the shaftdrive system down to the same weight as the lightest belt drive system is the real solution to all shaft cars.....
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Old 09-30-2014, 04:32 PM   #50
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Originally Posted by bertrandsv87 View Post
Lowering the total mass of the shaftdrive system down to the same weight as the lightest belt drive system is the real solution to all shaft cars.....
Along with weightless gears.

The lowest total mass would be RWD of FF. Go ahead.
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Old 09-30-2014, 04:35 PM   #51
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The floating gearbox on the A700 doesn't get rid of torque steer. That's impossible and would upset Mr Newton very much.

It gets rid of torque flex, which I can imagine is very useful with more powerful motors (but is totally unrelated to rotational mass and inertia).
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Old 09-30-2014, 04:37 PM   #52
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That's impossible and would upset Mr Newton very much.
lol
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Old 09-30-2014, 04:43 PM   #53
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I was thinking more 4wd shaft cars made with materials lighter than carbon fiber in their drivetrain...
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Old 09-30-2014, 04:51 PM   #54
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I was thinking more 4wd shaft cars made with materials lighter than carbon fiber in their drivetrain...
What material is lighter than carbon fiber, and equally durable or durable enough to make a shaft and/or gears out of?
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Old 09-30-2014, 04:58 PM   #55
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Graphene is very promising right now, but is expensive...
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Old 09-30-2014, 05:04 PM   #56
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Graphene is very promising right now, but is expensive...
Interesting. Bet there's quite a few materials suitable for this hobby that we still don't have. I mean we still have to spend quite an amount for titanium screws.

Kryptonite chassis with unobtanium bulkheads.... Mmmh..
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Old 09-30-2014, 05:14 PM   #57
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You don't need a lab. Just a couple of motors, and some electronics which I suspect you have already since you're here.

Torque is your enemy and brushless motors have it more than brushed, that is their main advantage. That is what twists the chassis of our cars hence you need to put it across.
Mate you have this wrong.

Brushed motors had considerably more torque effects on the chassi than brushless motors.

As the main shaft rotates in the opposite direction to the rotor there is also some torque cancellation effects. How much comes down to gearing, rotor diameter and weight.

As it stands I think there will not be a large come back of shaft drive cars.

There still is too much stigma in regards to shaft drives and torque steer. The A700 has the best suspension IMO lowest CG yet many racers wont buy it due to the shaft drive.
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Old 09-30-2014, 05:21 PM   #58
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Plus, I think al lot of people are scared of torque steer because people talk about torque steer. "better just stick with the belt so I won't suffer from torque steer" or "don't buy shaft, they torque steer". No demand, no supply...
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Old 09-30-2014, 05:33 PM   #59
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Originally Posted by frozenpod View Post
Mate you have this wrong.

Brushed motors had considerably more torque effects on the chassi than brushless motors.

As the main shaft rotates in the opposite direction to the rotor there is also some torque cancellation effects. How much comes down to gearing, rotor diameter and weight.

As it stands I think there will not be a large come back of shaft drive cars.

There still is too much stigma in regards to shaft drives and torque steer. The A700 has the best suspension IMO lowest CG yet many racers wont buy it due to the shaft drive.
I think the price-point might just be a key factor in that....just a hunch.
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Old 09-30-2014, 05:55 PM   #60
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Biggest thing is the R/C companies don't really test or build cars for spec, as we all know, all the top team drivers who test stuff run MOD.

really they look at two markets:
Bashers
and
MOD

Wins in MOD generate sales Win the worlds and you sell cars and you only do that in MOD so your car HAS to be best in MOD
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