RCCrawler Forums

scalemadness · 08-21-2015, 03:02 PM

Anyone who has changed to 32p spur and pinion what tooth count and motor combo are you utilizing?

SCREAMER · 08-21-2015, 05:59 PM

56/12 with a Holmes Crawlmaster 13t and 5.5 inch tall tires is a tiny bit faster than a fast walk. This is on 2s. With this combo and an axial 20t the speed doubles.

scalemadness · 08-21-2015, 06:08 PM

Ok my sons 48p are getting worn from the sand and river silt and i have a 32p 54t spur and a 9t pinion laying around hes running a 16t crawlmaster whats the opinion of this combo?

k goodrich · 08-21-2015, 06:48 PM

56/10 with a 35t motor on my wroncho.... I am also running 5.75 IROKS.

SCREAMER · 08-21-2015, 09:22 PM

Quote:

Originally Posted by scalemadness

Ok my sons 48p are getting worn from the sand and river silt and i have a 32p 54t spur and a 9t pinion laying around hes running a 16t crawlmaster whats the opinion of this combo?

That doesn't sound too crazy. I don't know what gearing ratio you were running before but 54 spur and 9 pinion are about the smallest sizes I've heard of for both, on an SCX anyway. I would just give it a try and be ready to buy some bigger pinions for dialing in the wheel speed. Pinions are cheaper and easier to change. I have an assortment that I've built up for just this reason. Keep an eye on your motor temps too after the switch. HTH

scalemadness · 08-21-2015, 10:08 PM

We tried it out tonight he ran the truck for about an hour a bit faster than the 48p 87/14 gearing still climbs well the motor didnt get overly warm ( could easily hold my fingers on it for extended periods he is running larger tires as well (axial 1.9 bf krawlers) might see if i can source a slightly larger spur and experiment a bit.

k goodrich · 08-21-2015, 10:59 PM

With my daughters wraith I used 87/12 and it's been about 4 yrs on the stock motor.

scalemadness · 08-21-2015, 11:12 PM

Im sure the 48p will work well for most people but here we have an abundance of silica (sandblasting sand) and fine silt as we reside in an area comprised of river valleys so it gets in through screw holes with the water needless to say teardowns and greasing/cleaning are quite ritual events

gottorque · 08-22-2015, 07:57 AM

Running 56/11 on my SCX with 4.19 Claws and a 35t

scalemadness · 08-22-2015, 08:50 AM

Quote:

Originally Posted by gottorque

Running 56/11 on my SCX with 4.19 Claws and a 35t

Ok well thats a fairly close comparision to his combo then thanks for the info

T4rscott · 08-23-2015, 11:28 AM

56/9 with an Atomic 35t and 2s. Crawls nice. Stock Trepador tires

08-21-2015, 03:02 PM	#1
scalemadness Quarry Creeper Join Date: Nov 2013 Location: alberta Posts: 445	Pinion spur gearing 32p Anyone who has changed to 32p spur and pinion what tooth count and motor combo are you utilizing?

08-21-2015, 05:59 PM	#2
SCREAMER I wanna be Dave Join Date: May 2015 Location: Moving Posts: 2,580	Re: Pinion spur gearing 32p 56/12 with a Holmes Crawlmaster 13t and 5.5 inch tall tires is a tiny bit faster than a fast walk. This is on 2s. With this combo and an axial 20t the speed doubles. Last edited by SCREAMER; 08-22-2015 at 09:57 AM. Reason: Forgot to mention tire size

08-21-2015, 06:08 PM	#3
scalemadness Quarry Creeper Join Date: Nov 2013 Location: alberta Posts: 445	Re: Pinion spur gearing 32p Ok my sons 48p are getting worn from the sand and river silt and i have a 32p 54t spur and a 9t pinion laying around hes running a 16t crawlmaster whats the opinion of this combo?

08-21-2015, 06:48 PM	#4
k goodrich Rock Crawler Join Date: Apr 2009 Location: bend Posts: 897	Re: Pinion spur gearing 32p 56/10 with a 35t motor on my wroncho.... I am also running 5.75 IROKS. Last edited by k goodrich; 08-21-2015 at 10:55 PM.

08-21-2015, 10:08 PM	#6
scalemadness Quarry Creeper Join Date: Nov 2013 Location: alberta Posts: 445	Re: Pinion spur gearing 32p We tried it out tonight he ran the truck for about an hour a bit faster than the 48p 87/14 gearing still climbs well the motor didnt get overly warm ( could easily hold my fingers on it for extended periods he is running larger tires as well (axial 1.9 bf krawlers) might see if i can source a slightly larger spur and experiment a bit.

08-21-2015, 10:59 PM	#7
k goodrich Rock Crawler Join Date: Apr 2009 Location: bend Posts: 897	Re: Pinion spur gearing 32p With my daughters wraith I used 87/12 and it's been about 4 yrs on the stock motor.

08-21-2015, 11:12 PM	#8
scalemadness Quarry Creeper Join Date: Nov 2013 Location: alberta Posts: 445	Re: Pinion spur gearing 32p Im sure the 48p will work well for most people but here we have an abundance of silica (sandblasting sand) and fine silt as we reside in an area comprised of river valleys so it gets in through screw holes with the water needless to say teardowns and greasing/cleaning are quite ritual events

08-22-2015, 07:57 AM	#9
gottorque RCC Addict Join Date: Jul 2009 Location: Ontherocks Posts: 1,980	Re: Pinion spur gearing 32p Running 56/11 on my SCX with 4.19 Claws and a 35t

08-23-2015, 11:28 AM	#11
T4rscott Rock Stacker Join Date: Jul 2014 Location: Hollis Posts: 84	Re: Pinion spur gearing 32p 56/9 with an Atomic 35t and 2s. Crawls nice. Stock Trepador tires Last edited by T4rscott; 08-23-2015 at 11:29 AM. Reason: Left out info

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