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Motors for Flywheel Blasters

Are These Superior to RM2's?

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#1 Birch

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Posted 17 March 2015 - 08:13 PM

I am going to modify my stryfe and have no intentions of purchasing ultrafires, imr, etc... I want to use RM2 motors from Solarbotics which are good motors, but have some durability issues. I was on their website and saw item number 1117. ( https://www.pololu.com/product/1117 ). These motors are the exact same size as the RM2's, but they're recommended voltage is 6 volts, instead of the 4.5 of the RM2's. I was just wondering if these motor s are going to be any better or more durable than the RM2's. If anyone that understands all the specifications and that stuff and is willing to enlighten me, it would be greatly appreciated.
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#2 snakerbot

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Posted 17 March 2015 - 08:23 PM

Free-run speed @ 6V: 11500 rpm
Free-run current @ 6V: 70 mA
Stall current @ 6V: 800 mA


I was just wondering if these motor s are going to be any better or more durable than the RM2's.


No. 11500 rpm is way slow for what we do. Durability is basically impossible to tell without testing.
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#3 Birch

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Posted 17 March 2015 - 08:26 PM

11500 rpm is way slow for what we do.


What rpm is normally used? It seems pretty fast to me.

Edited by Birch, 17 March 2015 - 08:26 PM.

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#4 Droid31

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Posted 17 March 2015 - 09:03 PM

This is what I ended up doing with my stryfe and it is freaking awesome. I got this battery and charger. With these motors. This thing is amazing!!

Posted Image

Posted Image
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#5 snakerbot

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Posted 17 March 2015 - 09:38 PM

What rpm is normally used? It seems pretty fast to me.

Over twice that. 11500 rpm*1.25in diameter flywheel*π*(1ft/12in)*(1min/60sec)=63fps. The edge of the flywheel is traveling at 63 feet per second on those motors, so with no dart slip and no loss of speed when firing or anything like that (both of which are present in copious amounts in reality) you top out at 63 feet per second muzzle velocity with those motors.
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#6 Birch

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Posted 17 March 2015 - 10:23 PM

Over twice that. 11500 rpm*1.25in diameter flywheel*π*(1ft/12in)*(1min/60sec)=63fps. The edge of the flywheel is traveling at 63 feet per second on those motors, so with no dart slip and no loss of speed when firing or anything like that (both of which are present in copious amounts in reality) you top out at 63 feet per second muzzle velocity with those motors.


Like those maths. Thank you for the advice. RM2's are very affordable, but I am always out to save money. I will probably buy these motors ( https://www.pololu.com/product/1592 ). On the website they say "They are a generic alternative the Solarbotics RM2 motors, which have the same form factor and nearly identical performance." I hope these will be good, and I am going to save a couple bucks with is cool.
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#7 CS- Tiff

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Posted 18 March 2015 - 07:20 AM

Like those maths. Thank you for the advice. RM2's are very affordable, but I am always out to save money. I will probably buy these motors ( https://www.pololu.com/product/1592 ). On the website they say "They are a generic alternative the Solarbotics RM2 motors, which have the same form factor and nearly identical performance." I hope these will be good, and I am going to save a couple bucks with is cool.


I used these in my first stryfe mod. They sound much louder than RM2's and spin 26000 rpm.

This is what I ended up doing with my stryfe and it is freaking awesome. I got this battery and charger. With these motors. This thing is amazing!!

Posted Image

Posted Image


What are the rev up times compared to lipos? What's the performance with that battery? is it holding up fine?

Edited by CS- Tiff, 18 March 2015 - 07:50 AM.

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#8 Droid31

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Posted 18 March 2015 - 10:08 AM

What are the rev up times compared to lipos? What's the performance with that battery? is it holding up fine?

Rev times are super fast, I have never used a lipo, but it is faster than my buddies raven that has a lipo. I sold this styfe to a friend so ignore the martial arts stuff because he took the video at work. Firing Video

Edited by Droid31, 18 March 2015 - 10:22 AM.

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#9 CS- Tiff

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Posted 18 March 2015 - 07:15 PM

Rev times are super fast, I have never used a lipo, but it is faster than my buddies raven that has a lipo. I sold this styfe to a friend so ignore the martial arts stuff because he took the video at work. Firing Video


Well, it's certainly just as loud as a 7.4v lipo.
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#10 Droid31

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Posted 18 March 2015 - 07:22 PM

Well, it's certainly just as loud as a 7.4v lipo.


The main reason I went with the NiMH was for safety since the blaster was for someone else. Also for my self I ended up getting this charger just because I now have 5 of these of these batteries ( I ordered 3 and they sent 5 for the price of 3!!!). I use them in a Rapidstrike and my stryfe and rayven and they work great.

As for the noise, Noise=Power right? :D

Edited by Droid31, 18 March 2015 - 07:24 PM.

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#11 CS- Tiff

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Posted 18 March 2015 - 07:27 PM

The main reason I went with the NiMH was for safety since the blaster was for someone else. Also for my self I ended up getting this charger just because I now have 5 of these of these batteries ( I ordered 3 and they sent 5 for the price of 3!!!). I use them in a Rapidstrike and my stryfe and rayven and they work great.

As for the noise, Noise=Power right? :D


Ohoho boiiiii. Thank you for guiding me into battery heaven. And yes, Noise=Power.
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#12 ravetrooper

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Posted 19 March 2015 - 10:12 AM

I used these in my first stryfe mod. They sound much louder than RM2's and spin 26000 rpm.


What voltage were you running them at? Would 6-8 volts get that rpm? If so I might get some of these.
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Gut the electronics, drill a hole in the shell, and attach a crank to the gear. Bam, crank-action stampede that doesn't require batteries, or even a trigger.

...(also judging by your past posts, I would consider you pretty dang wise elder like in the modding community :lol: )


#13 CS- Tiff

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Posted 19 March 2015 - 11:09 AM

What voltage were you running them at? Would 6-8 volts get that rpm? If so I might get some of these.


Just stock batteries. These were WAYYYY louder than rm2's and my friends who just played with stock blasters called it the "OP Stryfe". I realize 180's are better but at the time, I didn't know of them and the shipping on these for me was a lot but for you guys in United States (im in canada), these are ~100 fps motors. Try doing a carbon mod to them. they rev up faster than RM2's as well BTW because I hated how slow the RM2's revved up.
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