L vs XL Motor and Servo Motor for RC Car Model?

[andythenorth]

If you want a technical project, go with coupling motors and using geartrains. Make sure you can disassemble the vehicle quickly to replace broken gears.

If you want to build a fun powerful vehicle quickly, simply use one motor per wheel, and eliminate as much gearing as possible (including differentials, which aren't needed in this configuration).

[pgplay]

Oracid,

Try Sariels' book

"The unofficial Lego Technic builder's guide"

http://sariel.pl/2012/06/my-book-available-now/

I found it quite easy to follow :)

[oracid]

Oracid,

Try Sariels' book

Thank you for this advice. I'll offer me.

[ARXD]

Oracid,

Try Sariels' book

"The unofficial Lego Technic builder's guide"

http://sariel.pl/201...-available-now/

I found it quite easy to follow :)

I have that book, this is the BEST book on LEGO Technic on the market!

[deehtha]

Speaking of hard coupling motors and the chance of breaking the gears, has anyone broken the internal gearing on any motor?

[ARXD]

Speaking of hard coupling motors and the chance of breaking the gears, has anyone broken the internal gearing on any motor?

YES, I HAVE ,

but with old motors styles, not the PF ones.

Edited January 14, 2016 by ARXD

[dr_spock]

Speaking of hard coupling motors and the chance of breaking the gears, has anyone broken the internal gearing on any motor?

I didn't break any internal gears but something must have worn down internally after prolonged use. I took the M-motor apart and the motor ran quieter without the internal gears attached.

[Parazels]

I've built an RC vehicle with 1 L-motor for propulsion

and it isn't moving as fast as I wish it did.

Will it move significantly faster, if I add another L-motor?

[amorti]

1 hour ago, Parazels said:

I've built an RC vehicle with 1 L-motor for propulsion

and it isn't moving as fast as I wish it did.

Will it move significantly faster, if I add another L-motor?

Depends.

If the single L motor is being slowed down significantly by the weight of the vehicle, then yes. If not, then probably no.

In either case, it will accelerate quicker with two motors than with one.

Other ways to make it quicker: change the gearing, get the Chinese extra power motors, get a buwizz for increased voltage = more rpm.

[Parazels]

31 minutes ago, amorti said:

Depends.

If the single L motor is being slowed down significantly by the weight of the vehicle, then yes. If not, then probably no.

In either case, it will accelerate quicker with two motors than with one.

Other ways to make it quicker: change the gearing, get the Chinese extra power motors, get a buwizz for increased voltage = more rpm.

There is 1.4:1 gear ratio and I believe it is slowed down by the weight.

Also will a power brick feed a one more L-motor? (Now there are already L, M and M connected).

[amorti]

Just now, Parazels said:

There is 1.4:1 gear ratio and I believe it is slowed down by the weight.

Also will a power brick feed a one more L-motor? (Now there are already L, M and M connected).

• If the weight is the problem then yes an extra motor will help.
• There's a limit to how much power one battery can put out. What exact components do you have for battery and RC? if IR receiver, V1 or V2? Do all the motors have to turn (under a load) at the same time?

Edited July 23, 2020 by amorti

[Parazels]

1 hour ago, amorti said:

• If the weight is the problem then yes an extra motor will help.
• There's a limit to how much power one battery can put out. What exact components do you have for battery and RC? if IR receiver, V1 or V2? Do all the motors have to turn (under a load) at the same time?

Right now I use:

1 IR receiver V2

1 L-motor

2 M-motors

Most of the time all three motors must work simultaneously.

And now we are discussing about plugging in 4th motor...

 

[amorti]

And the battery box? They have different rated fuses.