SCX24 Motor Pinion?

[BIGW0RM]

Has anyone tried a smaller pinion with the stock motor yet? I find that the little motor it comes with gets SO hot so quick.

I like the wheel speed it has, but perhaps a pinion drop might help with the motor getting so blistering hot.

Has anyone made any changes to their motor or pinion yet? If so, please share with us what you did.


TY.

[spoo76]

If your motor is getting hot and you're not often getting it bound up then your wheel nuts may be tight or there is binding somewhere. Wheel nuts seem to be the most often overlooked cause of this on micro crawlers.
The gearing seems lower than even a stock Losi micro or trekker with a higher turn motor so it in theory it should stay cooler.
As far as the actual question the motor Pinion and spur are the same 0.3 mod pinions as all the Losi Micros & Trekker, the Proline Ambush, RC4WD 1/18 mini Gelande, ECX Barrage/ RGT Adventurer/FTX Outback, & HobbyPlus CR-24.

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[BIGW0RM]

Originally Posted by spoo76

If your motor is getting hot and you're not often getting it bound up then your wheel nuts may be tight or there is binding somewhere. Wheel nuts seem to be the most often overlooked cause of this on micro crawlers.
The gearing seems lower than even a stock Losi micro or trekker with a higher turn motor so it in theory it should stay cooler.
As far as the actual question the motor Pinion and spur are the same 0.3 mod pinions as all the Losi Micros & Trekker, the Proline Ambush, RC4WD 1/18 mini Gelande, ECX Barrage/ RGT Adventurer/FTX Outback, & HobbyPlus CR-24.

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Thank you Spo076. These wheel nuts are indeed very easy to overtighten. I will loosen mine up some more and see what I experience. I dont typically hammer them down like a 1/10th. But it's worth a second look for sure!

Do you know what tooth count the stock pinion is? Is it a 12T?

[spoo76]

Here's a quick video of a green SCX24 with a 110T hand wound Losi DDT predator motor and 10t pinion. Red SCX24 is stock other than Mil Stone wheel weights.
I'll get better videos when my replacement servos arrive. One is twitching out, the other I stripped tightening the servo saver.
https://m.facebook.com/groups/149417...71100066461055

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[spoo76]

Originally Posted by BIGW0RM

Thank you Spo076. These wheel nuts are indeed very easy to overtighten. I will loosen mine up some more and see what I experience. I dont typically hammer them down like a 1/10th. But it's worth a second look for sure!



Do you know what tooth count the stock pinion is? Is it a 12T?

I'm not positive on the tooth count but I think it was 11. I do remember it was more than what was listed in the specs. The smallest i would go for durability is a brass 0.3 mod 9t pinion with a 1.5mm bore, but 8t is also available.

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[BIGW0RM]

Originally Posted by spoo76

I'm not positive on the tooth count but I think it was 11. I do remember it was more than what was listed in the specs. The smallest i would go for durability is a brass 0.3 mod 9t pinion with a 1.5mm bore, but 8t is also available.

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Thanks man. Ive got a 10T brass. and I think 9T 10T and 11T plastics.

I might try one and see. Thank you.

Hey look what I found. Not sure that gearing is appropriate. But he doesnt have any video of it running so I dont know.
https://www.youtube.com/watch?v=_ejj0MKkis0

[spoo76]

Yes I saw the post. I'm not a fan of the gearing even with a 130 motor.

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[BIGW0RM]

Originally Posted by spoo76

Yes I saw the post. I'm not a fan of the gearing even with a 130 motor.

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That was my concern. That pinion is a monster.

[HumboldtEF]

My motor has stayed very cool, though temps where I live are only in the 60's-70's.

You might check to make sure the pins on the end of the dogbones haven't come loose, 1 of mine did. That could add some extra heat.

[BIGW0RM]

Originally Posted by HumboldtEF

My motor has stayed very cool, though temps where I live are only in the 60's-70's.

You might check to make sure the pins on the end of the dogbones haven't come loose, 1 of mine did. That could add some extra heat.

Thank you. Another good idea!


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[BashNSlash]

If I wanted to order a bunch of "stock" (whatever the exact size is) pinion gears, what should I be looking for? Axial doesn't seem to sell just the pinion as the motor comes with one, but I'd like to keep a few extra on hand.

[BIGW0RM]

Originally Posted by BashNSlash

If I wanted to order a bunch of "stock" (whatever the exact size is) pinion gears, what should I be looking for? Axial doesn't seem to sell just the pinion as the motor comes with one, but I'd like to keep a few extra on hand.

I think it's cheaper to buy the motor with it on than buy the pinions separately.

I had found a losi trail trekker pinion kit on ebay for like 10-15 bucks but they all slip on me unless I crush the spine with notches. And everytime i do that, I end up with a bent spline.

So I removed the brass one on my RC4WD motor and use that on others. I have yet to try it on the SCX24.

The 10T on the RC4WD one is rather nice. Its a nice tight fit on all the other motors Ive tried it on.

I vote you get an ECX barrage long can with a 12T plastic pinion.
And you get a RC4WD motor with the 10T brass pinion.
And I think the SCx24 is either an 11T or 12T. Its not a 10T for sure. I was able to count the teeth in a picture of it to some degree and I got over 9 for sure.

This way you got new motors and pinions for about the same price.

[spoo76]

The RC4WD motor is supposedly 90 turns or more, though I haven't counted myself. The SCX24 and CR-24 upgrade kit motors are both 88t
As far as pinion gears nearly all 1/24 and the 1/18 RC4WD use .3 mod pinions with a 1.5 shaft bore. Usually around 11t or 12t, but many swap to a bras 9t or 10t.

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[BIGW0RM]

Originally Posted by spoo76

The RC4WD motor is supposedly 90 turns or more, though I haven't counted myself. The SCX24 and CR-24 upgrade kit motors are both 88t
As far as pinion gears nearly all 1/24 and the 1/18 RC4WD use .3 mod pinions with a 1.5 shaft bore. Usually around 11t or 12t, but many swap to a bras 9t or 10t.

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Like this Spoo76?

https://www.amainhobbies.com/lynx-he...yx1100/p454115

[spoo76]

Exactly but I would look for 10t or 9t if you can find it

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[BashNSlash]

Originally Posted by BIGW0RM

I think it's cheaper to buy the motor with it on than buy the pinions separately.

I'm going to assume (because they aren't available yet), that the SCX24 motor+pinion will be around $10 Canadian. The CR24 motor without a pinion goes for around $2.50. If I can get pinions for under $3 each, I'll buy them all day

Originally Posted by spoo76

The SCX24 and CR-24 upgrade kit motors are both 88t
As far as pinion gears nearly all 1/24 and the 1/18 RC4WD use .3 mod pinions with a 1.5 shaft bore. Usually around 11t or 12t, but many swap to a bras 9t or 10t.

I'm not sure that the stock CR24 motor is 88t, and the one in the upgrade kit can't be purchased separately, at least not for now.

Does going with a brass or metal pinion + the white plastic spur gears, cause any issues with the spur gear? I would guess the spur gear on these micros would be more difficult to find than the pinions!

[spoo76]

You can also use up to a 59t spur from a Losi micro 1/24 Rally/SCT/Truggy if you also use a slipper centering disc from any Losi Micro car or truck.

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[spoo76]

Originally Posted by BashNSlash

I'm going to assume (because they aren't available yet), that the SCX24 motor+pinion will be around $10 Canadian. The CR24 motor without a pinion goes for around $2.50. If I can get pinions for under $3 each, I'll buy them all day







I'm not sure that the stock CR24 motor is 88t, and the one in the upgrade kit can't be purchased separately, at least not for now.



Does going with a brass or metal pinion + the white plastic spur gears, cause any issues with the spur gear? I would guess the spur gear on these micros would be more difficult to find than the pinions!

The scx24 motor is available in the USA, not sure how much. Correct, stock CR-24 isn't 88t, just the upgrade kit.
Plastic against brass doesn't cause issues

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[BashNSlash]

Originally Posted by spoo76

The scx24 motor is available in the USA, not sure how much, and no stock CR-24 isn't 88t, just the upgrade kit.

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Stock scx24 motor is like $6 US, but in Canadian dollars it'll be $10 at least

Any idea how many turns the RGT 050 High Power Brushed Motor for ECX Barrage/ FTX Outback/ RGT Adventurer for RGT 1/24 ADVENTURER is? They are like $4 on Asiatees and they might be a direct fit on the scx24.

[BIGW0RM]

Originally Posted by BashNSlash

Stock scx24 motor is like $6 US, but in Canadian dollars it'll be $10 at least

Any idea how many turns the RGT 050 High Power Brushed Motor for ECX Barrage/ FTX Outback/ RGT Adventurer for RGT 1/24 ADVENTURER is? They are like $4 on Asiatees and they might be a direct fit on the scx24.

You got the RGT long can to mount to the SCX24? If so Score! EDIT: just noticed keyword "might"

I can tell you this. The RGT in my RC4WD mini helps alot. But the motor spins much easier than the RC4WD 030.

My mini with the RC4WD and no drag brake doesnt move on incline at all.

My mini with the RGT 050 and no drag brake will roll forward slowly. At a snails pace. But it moves.

That said, I feel I have much more more mid to top end power from the RGT 050. But Im left wondering if the RC4WD 030 is more torque down low and perhaps tapers off quicker.

Im willing to try the RGT 050 motor I have. But It looks like the C frame will block it. At first I thought it might only be the tray in the way. The long can appears to be too long and might be blocked from the frame.