Electric Vehicle C

[finagle29]

Did you see what type of motor it was? brushless? Microcontroller?
so it was single-wheeled drive or three-wheeled drive?

single-wheel drive, didn't get a good look at the motor

[windu34]

Did you see what type of motor it was? brushless? Microcontroller?
so it was single-wheeled drive or three-wheeled drive?

single-wheel drive, didn't get a good look at the motor

Interesting...

[windu34]

I have a question I was hoping someone could answer for me without me having to submit a rules clarification. The rules state that "The vehicle may use no more than 6 individual cell (labeled 1.5 volts or less each), a single 9-volt battery, or a single battery pack (labeled 7.2 volts or less) at any given time during the 8 minutes. Batteries need not be installed until immediately prior to the run. Only electrical energy stored in these batteries may be used to propel the vehicle."

Then it goes on to say, " Additional energy sources may be used to operate other functions (e.g., braking system) provided these functions do NOT help propel the vehicle in any way."

So my question is this: would a battery that is used to power a microcontroller (that would not help propel the vehicle) need to be included into 6 cells or single 9 volt battery? When they say ADDITIONAL energy sources can be used to operate other functions, are they saying that you are permitted to add batteries outside the 6 cells or single 9 volt battery?

I understand that any rules clarifications are unofficial, but does anyone have an answer for me?

Thank you.

That is the way both my coach and my partner interpreted it so yes, I believe that is the intention of the rules. I plan on submitting a clarification however

[windu34]

How does wheel base affect accuracy? I had thought having a larger wheel base decreases percent error, but my local r/c rep. informed me that a large wheel base in the front and narrow in the back is the best.

[A Person]

How does wheel base affect accuracy? I had thought having a larger wheel base decreases percent error, but my local r/c rep. informed me that a large wheel base in the front and narrow in the back is the best.

Do you mean track or wheel base? There's a difference.

https://en.wikipedia.org/wiki/Wheelbase

For track, I don't think it affects the vehicle in any way, so long as there isn't any problems with the vehicle's structure flexing or anything as the car moves. Make sure you mention that your vehicle won't be turning. For RC vehicles, you want a nice wide track for your car as you go into turns.

[InfiniCuber]

How does wheel base affect accuracy? I had thought having a larger wheel base decreases percent error, but my local r/c rep. informed me that a large wheel base in the front and narrow in the back is the best.

Do you mean track or wheel base? There's a difference.

https://en.wikipedia.org/wiki/Wheelbase

For track, I don't think it affects the vehicle in any way, so long as there isn't any problems with the vehicle's structure flexing or anything as the car moves. Make sure you mention that your vehicle won't be turning. For RC vehicles, you want a nice wide track for your car as you go into turns.

I think he does mean wheel base. The wider the wheel base, the less the car will deviate from a "center" or straight line path if the wheels are off, in general. I think that is what they were referring to.

[A Person]

How does wheel base affect accuracy? I had thought having a larger wheel base decreases percent error, but my local r/c rep. informed me that a large wheel base in the front and narrow in the back is the best.

Do you mean track or wheel base? There's a difference.

https://en.wikipedia.org/wiki/Wheelbase

For track, I don't think it affects the vehicle in any way, so long as there isn't any problems with the vehicle's structure flexing or anything as the car moves. Make sure you mention that your vehicle won't be turning. For RC vehicles, you want a nice wide track for your car as you go into turns.

I think he does mean wheel base. The wider the wheel base, the less the car will deviate from a "center" or straight line path if the wheels are off, in general. I think that is what they were referring to.

His statement about a "front" and "back" wheel base is what led me to think he meant track.

Yup. So long as it doesn't pass the 60cm, longer is better.

[windu34]

All of what you guys are saying is what I had initially thought, my dimensions are as maxed out, but the guy at the r/c store is a drag racer and he said to make the back wheel base shorter than the front (not by a whole lot).
Is this beneficial?

[A Person]

All of what you guys are saying is what I had initially thought, my dimensions are as maxed out, but the guy at the r/c store is a drag racer and he said to make the back wheel base shorter than the front (not by a whole lot).
Is this beneficial?

I see no reason it would be, other than perhaps your axle being shorter, maybe? I don't really see a way that having a thinner car could help, other than cutting down weight.

[windu34]

All of what you guys are saying is what I had initially thought, my dimensions are as maxed out, but the guy at the r/c store is a drag racer and he said to make the back wheel base shorter than the front (not by a whole lot).
Is this beneficial?

I see no reason it would be, other than perhaps your axle being shorter, maybe? I don't really see a way that having a thinner car could help, other than cutting down weight.

Ok thanks for the input.