Mid-Motored TC3?
05-22-2004, 07:13 PM
#46
Originally posted by Crashmaster
How about using a system kind of like the Mi2 so as you can move the bats forwards and back on a tray, that way you would be able control the bias to the finest degree.
Cheers
Crashmaster
How about using a system kind of like the Mi2 so as you can move the bats forwards and back on a tray, that way you would be able control the bias to the finest degree.
Cheers
Crashmaster
Sammy Ima Email you later tonight To talk about something. If you got a home Email or something Pm Me it.
I Would love to see this go into production. I too get Exited talking about the design and how it looks. Even though i don't run a tc3 I was still gettin in contact with sammy asking about it because it looks like a very cool design.
05-23-2004, 07:35 AM
#48
Tech Initiate
HMMMM THE ONLY THING WOULD HAVE TO BE THE POINTS OF BALANCE. 3 CELLS AND MOTOR ON ONE SIE WOULD BE PRETTY UNEVEN AND WOULDNT YOU GET INTERFERRENCE HAVING THE MOTOR SO CLOSE TO THE SERVO?
05-23-2004, 08:01 AM
#49
Tech Regular
Thread Starter
Originally posted by rc_1uk
HMMMM THE ONLY THING WOULD HAVE TO BE THE POINTS OF BALANCE. 3 CELLS AND MOTOR ON ONE SIE WOULD BE PRETTY UNEVEN AND WOULDNT YOU GET INTERFERRENCE HAVING THE MOTOR SO CLOSE TO THE SERVO?
HMMMM THE ONLY THING WOULD HAVE TO BE THE POINTS OF BALANCE. 3 CELLS AND MOTOR ON ONE SIE WOULD BE PRETTY UNEVEN AND WOULDNT YOU GET INTERFERRENCE HAVING THE MOTOR SO CLOSE TO THE SERVO?
Crashmaster, I thought about using a tray like Schuie, but there's just not much room with this layout. It would certainly eat into precious electronics mounting room.
05-23-2004, 12:44 PM
#51
Nice concept…. Looks like my RCLabs with a shaft instead of belts… mid motor with rear saddle packs has been around since the beginning of RC.
If you’re looking to make money with this…. I am not so sure you will. There have to be at least 6 companies selling aftermarket TC3 chassis’s. All take stock TC3 parts and none address any shortcomings of the suspension…. All are geared towards weight distribution with some claiming added stiffness.
This means you can only sell to people with TC3’s who are unhappy with the stock chassis or just want something different. With the amount of choices available and the limited market… well the numbers are not looking good. Add in the rumors about the TC4 and I don’t think it makes sense financially.
If you’re looking to make money with this…. I am not so sure you will. There have to be at least 6 companies selling aftermarket TC3 chassis’s. All take stock TC3 parts and none address any shortcomings of the suspension…. All are geared towards weight distribution with some claiming added stiffness.
This means you can only sell to people with TC3’s who are unhappy with the stock chassis or just want something different. With the amount of choices available and the limited market… well the numbers are not looking good. Add in the rumors about the TC4 and I don’t think it makes sense financially.
Last edited by ottoman; 05-23-2004 at 01:06 PM.
05-23-2004, 06:40 PM
#54
You might consider using the Pro4 for this chassis conversion.
05-23-2004, 08:21 PM
#55
Originally posted by R/C Anonymous
ottoman, the "TC3M" team have other ideas up in the air as well including camber positions and shock towers as well as another chassis me and Sammy have discussed
ottoman, the "TC3M" team have other ideas up in the air as well including camber positions and shock towers as well as another chassis me and Sammy have discussed
Last edited by ottoman; 05-23-2004 at 08:26 PM.
05-23-2004, 08:36 PM
#56
One thing I notice that no-one mentioned would be how engines torque would effect steering.
It would seem that with a 30-45,000 rpm gyroscope located so near the steering, that any sudden acceleration or braking would have a MUCH more pronounced effect on the car.
With the motor placement currently in the rear, most of the torque is dampened out by suspension design / chassis flex.
Hate to say it...but if you think the stock TC3 has torque steer issues, this one would probably be a nightmare to get setup properly. The steering couldn't have ANY slop either. I could see it right now....gun the throttle and the front of the car literally hops about 1 cm to the side.
Notice that all the other mid-motor setup thus far are belt drive with the motor mounted sideways...There's probably a reason a mid-motor shaft car hasen't been developed yet.
*Note - I'm fully aware nitro cars have this type of setup....however electric motors have FAR more instantanious torque than a nitro motor.
It would seem that with a 30-45,000 rpm gyroscope located so near the steering, that any sudden acceleration or braking would have a MUCH more pronounced effect on the car.
With the motor placement currently in the rear, most of the torque is dampened out by suspension design / chassis flex.
Hate to say it...but if you think the stock TC3 has torque steer issues, this one would probably be a nightmare to get setup properly. The steering couldn't have ANY slop either. I could see it right now....gun the throttle and the front of the car literally hops about 1 cm to the side.
Notice that all the other mid-motor setup thus far are belt drive with the motor mounted sideways...There's probably a reason a mid-motor shaft car hasen't been developed yet.
*Note - I'm fully aware nitro cars have this type of setup....however electric motors have FAR more instantanious torque than a nitro motor.
05-23-2004, 09:27 PM
#57
i have never experienced torque steer with any of the cars i have owned and driven...both left and right side mounted shaft drive motor systems....i believe a mid motor design wouldnt multiply torque steer any but only time will tell....
i could be wrong but i thought torque steer was from the rear tire lifting slightly under acceleration meaning a rear mounted motor would have more torque steer since there is less space from the motor to the rear suspension(less chassis flex). correct me if im wrong
i could be wrong but i thought torque steer was from the rear tire lifting slightly under acceleration meaning a rear mounted motor would have more torque steer since there is less space from the motor to the rear suspension(less chassis flex). correct me if im wrong
05-23-2004, 09:55 PM
#58
Originally posted by R/C Anonymous
i have never experienced torque steer with any of the cars i have owned and driven...both left and right side mounted shaft drive motor systems....i believe a mid motor design wouldnt multiply torque steer any but only time will tell....
i could be wrong but i thought torque steer was from the rear tire lifting slightly under acceleration meaning a rear mounted motor would have more torque steer since there is less space from the motor to the rear suspension(less chassis flex). correct me if im wrong
i have never experienced torque steer with any of the cars i have owned and driven...both left and right side mounted shaft drive motor systems....i believe a mid motor design wouldnt multiply torque steer any but only time will tell....
i could be wrong but i thought torque steer was from the rear tire lifting slightly under acceleration meaning a rear mounted motor would have more torque steer since there is less space from the motor to the rear suspension(less chassis flex). correct me if im wrong
05-23-2004, 10:04 PM
#59
the issue of tourque steer is so blown out of proportion it isnt funny...
the tc3 is the most [popular car.. i have never heard anyone at the track since it came oyut say the torque steer was affecting the car... it doesnt.. it is an issue brought on by some company to give a reason as to why a change was made.......
i have never felt it in my tc3...i honestly think some people confuse the snappy feel of the shaft drive as a tourque steer issue.... a belt flexes so u dont have the snappy feel... a shaft dont flex.. it is instant..
the tc3 is the most [popular car.. i have never heard anyone at the track since it came oyut say the torque steer was affecting the car... it doesnt.. it is an issue brought on by some company to give a reason as to why a change was made.......
i have never felt it in my tc3...i honestly think some people confuse the snappy feel of the shaft drive as a tourque steer issue.... a belt flexes so u dont have the snappy feel... a shaft dont flex.. it is instant..
05-24-2004, 07:16 AM
#60
Tech Regular
Thread Starter
A few quick points...
1) I'm definitely not out to get rich or even make significant profit off this concept. As it has been stated, there is so much competition at this point from quality manufacturers at rockbottom prices that it would be impossible to compete. But this is a viable concept and I believe that many racers will want to give it a try.
2) As it also has been stated, this isn't the first mid-motored, saddle pack RC car. And not just belt-drive. Run a search on this board for the "Hien Prototype" and you'll see a clean sheet design shaft-driven, mid-motored TC. I believe that the concept makes many compromises, though, and does not merit a clean sheet design. I am not surprised AE didn't go with this config for the TC3 from the factory. But for a no-nonsense racer who is either looking for an edge, or just to run something different to stand out from the crowd, I thought that a conversion kit for the popular TC3 would be a wise way to implement this concept.
I'm anxious to make a prototype to test the balance of the chassis. Perhaps torquesteer or some other unforeseen issue will disprove the concept's merits. I think it's a worthwhile endeavor. This post was simply geared at getting an idea of how the market would receive such a product. So far I am very pleased with the reception.
Yes, it's a niche product. Maybe it is a "chassis of the week", but it's still cool, isn't it?
2) As it also has been stated, this isn't the first mid-motored, saddle pack RC car. And not just belt-drive. Run a search on this board for the "Hien Prototype" and you'll see a clean sheet design shaft-driven, mid-motored TC. I believe that the concept makes many compromises, though, and does not merit a clean sheet design. I am not surprised AE didn't go with this config for the TC3 from the factory. But for a no-nonsense racer who is either looking for an edge, or just to run something different to stand out from the crowd, I thought that a conversion kit for the popular TC3 would be a wise way to implement this concept.
I'm anxious to make a prototype to test the balance of the chassis. Perhaps torquesteer or some other unforeseen issue will disprove the concept's merits. I think it's a worthwhile endeavor. This post was simply geared at getting an idea of how the market would receive such a product. So far I am very pleased with the reception.
Yes, it's a niche product. Maybe it is a "chassis of the week", but it's still cool, isn't it?
