Good Mod Motor

[KevanB]

What is a good mod motor for the xxxs. That is fast (35-40 is great!), cheap (under $40), and lasts long. I will be using it mostly for bashing, but I might start racing with it. I have no motor limit. And I was looking into the Speed Gems 13x2 line. Are they good motors?

[Lapster]

Speed gem motors will work great. I would look at about a 10t for onroad 4wd.

[End Overend]

I'll second the Speed Gem.

I've got a 17 Turn Double wind Amythest and love it. It has plenty of power for the track I run on and it doesn't wear the comm as fast as my P2K2. I paid 33.99 at my local hobby shop for it.

The Speed Gems go down to a 9 turn motor all for the same price. That should do the trick for you if you want speed at a low price.

[BigBobDeBlob]

speed gems and speed gems pro are definatly the way to go for low-budget motors.

i have a 1st generation speed gem Ruby (16-3) that i got about 6-8 years ago, and the thing runs perfectly.

great for any application.

[KevanB]

So how long will a 17 or 15 turn last before I have to cut the comm, and replace brushes. Also, how does the speed compare to the Trinity Monster Stock Pro? I dont have a comm cutter just yet.

[Lapster]

I think the comm will las for about 18 runs. It will be faster than the stock. I have the moster stock and it is a great motor no doubt, but it is still not a mod motor. I thnk you hould look at 10 turns for racing. But if you are just bashing around... use a stock. I use stocks in all of my cars. Except I race mod somethmes and use a 13t in my b4.

[highroller]

Use a low silver brush for standup motor use the Trinity 4380 or Reedy 729 for laydown Trinity 4488 or 4500, Reedy 760 or 766.
I've also used the BRP LPS that are available in standup and laydown. The 14-17 turn will have less wear while the ones below 13 turn will create more rear and less runtime. The ones in the 14-15 turn double range have about the best overal performance for non racing situations.

The misleading part about modified motors: the lower the turn doesn't make it faster. All fall within the same speed they obtain, but less wire, means less weight and resistance. Less wire allows the motor to accelerate quicker and harder (referred to as rip) while motors with more wire will accelerate at a slower rate but obtain the same speed. Very low turn motors are only used on tracks(conditions) where traction is very good, chassis setup is perfect and you have high capacity batteries with good runtime. For a person who has been involved in RC both recreational and regional & club racing certain tracks will only hold so much power. One track may call for a 10T triple, while another you can use a 6T single or 7T double. In racing the idea is to use as much power as the track will take without it being unmanageable or unuseable and use all the runtime the battery has; while for recreational use the idea is to limit wear & maintenance, and have good runtime. The same is with recreational use, if the motor turn selection is too low it compounds your problem: motor needs to be geared differently, transmission (slipper, diff) may need to be set looser, runtime will be much less 30-50 seconds depending on battery rating, brushes will last 1-3 battery packs, spring tension is generally too tight.