Shaft drive TC... Why so few...
09-30-2014, 03:04 PM
#46
Or maybe belts are outside of the Russians knowledge base.
09-30-2014, 03:05 PM
#47
09-30-2014, 03:21 PM
#48
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.
09-30-2014, 03:26 PM
#49
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.....
09-30-2014, 03:32 PM
#50
09-30-2014, 03:35 PM
#51
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).
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).
09-30-2014, 03:37 PM
#52
09-30-2014, 03:43 PM
#53
I was thinking more 4wd shaft cars made with materials lighter than carbon fiber in their drivetrain...
09-30-2014, 03:51 PM
#54
09-30-2014, 03:58 PM
#55
Graphene is very promising right now, but is expensive...
09-30-2014, 04:04 PM
#56
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..
Kryptonite chassis with unobtanium bulkheads.... Mmmh..
09-30-2014, 04:14 PM
#57
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.
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.
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.
09-30-2014, 04:21 PM
#58
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...
09-30-2014, 04:33 PM
#59
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.
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.
09-30-2014, 04:55 PM
#60
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
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