RCCrawler Forums

kmrunner · 01-12-2010, 10:42 PM

Got my electronics in and spent all night soldering just to find out the set screw won't catch threads on the pinion. Can't get the pinion to seat on the motor shaft

Anybody else run into this problem?

CruiserHead · 01-12-2010, 10:55 PM

You mean the threads are stripped on the set screw or in the pinion? Just go buy or order some new ones....They don't really cost that much. Hope you don't live in the boonies.

You can also check to see if there is crusty thread lock on the threads that will clean off. Sometimes I have to take a little screwdriver and chip that shit off. Not likely with a brand new one though. Check for burrs that can be removed as well...

I always use a tiny drop of blue thread lock on the set screw to keep it from coming off. You might as well buy some of that too. Its good cheap insurance(Don't use red and for god sakes don't use green. You want the screw to come back out).

Good Luck,

JB

kmrunner · 01-12-2010, 11:01 PM

I tried 5 different set screws. I believe it is the threads in the pinion itself. I think they are cut too deep. The set screw won't catch until it is deep in the pinion (i set it with the pinion off the motor shaft and the set screw was way to deep by the time it caught threads) No way to set the screw while the pinion is on the motor shaft Guess I will be ordering another one unless my Hobbytown has one in stock.

Sverref · 01-12-2010, 11:49 PM

try one set screw in a larger size? or just do as somone here said, buy a new pinion gear i changed out my stock pinion cus it made a really mad noise:p and bumped it up too 16 teeths not 14teeths that is stock:p

RBCcrawler · 01-13-2010, 04:41 AM

Same thing happened to me. It was the last thing for me to screw on and I was like wtf, when threading on the pinion stripped out. Went to the LHS and got a pinion for under 4 bucks!

kmrunner · 01-13-2010, 06:12 AM

Quote:

Originally Posted by RBCcrawler

Same thing happened to me. It was the last thing for me to screw on and I was like wtf, when threading on the pinion stripped out. Went to the LHS and got a pinion for under 4 bucks!

sucked didn't it

I mean dang that was probably the easiest thing to do on the entire install and it just wasn't happening.

kmrunner · 01-13-2010, 06:41 AM

Quote:

Originally Posted by Sverref

try one set screw in a larger size? or just do as somone here said, buy a new pinion gear i changed out my stock pinion cus it made a really mad noise:p and bumped it up too 16 teeths not 14teeths that is stock:p

Does the 16 tooth pinion give it more speed or torque?

dkf · 01-13-2010, 06:48 AM

More teeth on the pinion equals more wheel speed, less teeth less wheel speed more torque. If your running a 27t motor the 14t is ok at least for me.

JohnRobHolmes · 01-13-2010, 07:12 AM

you could drill and tap the pinion for m3 screws. Thats what I do on mine when I can't find a proper set screw.

Drail · 01-13-2010, 07:12 AM

i run a 16 w a 45t and iv'e got the best of both worlds good stable crawl and descent wheel speed on 8 cells

GSRCC Drail

kmrunner · 01-13-2010, 07:37 AM

I'm running a 45t so maybe i will go up to a 16 tooth pinion.

Soldering that Tekin ESC was a PITA. Atleast for me. So dang small!

kmrunner · 01-13-2010, 07:46 AM

What are some aftermarket pinions that would fit the SCX-10?

HPI?

http://www.tcscrawlers.com/HPI-Pinio...5-p-17453.html

Drail · 01-13-2010, 08:11 AM

i like the losi pinions allways fit good and the gear is stamped w the # of teeth...

GSRCC Drail

JTank70 · 01-13-2010, 06:36 PM

This happened to me on my Honcho.

It was definately the pinion and not the set screw.

Luckily I had my AX10 to rob the pinion from to get it going for now until I get another one.

big bronco · 01-13-2010, 06:49 PM

i didnt have this probem... but i did get a set screw for the drive shaft that didint have any thread on it...

generalee7 · 01-13-2010, 07:44 PM

Same thing happened to me. It's like Axial made them out of pot metal or something. I ended up buying a 3 pack of 48p pinions from Tower. I got a 13t, 14t and a 15 or 16t

Scottmisfits · 01-13-2010, 07:49 PM

The pinions from Robinson racing are threaded 4-40. The Axial ones are 3mm. If you have a 3x3 screw it should work. I used a Robinson steel one. I had three of them laying around that I forgot about, all new.

fathead · 01-13-2010, 07:58 PM

news flash!! life is full of disapointments...get over it..haha

dkf · 01-14-2010, 08:11 AM

Quote:

Originally Posted by kmrunner

What are some aftermarket pinions that would fit the SCX-10?

HPI?

http://www.tcscrawlers.com/HPI-Pinio...5-p-17453.html

Thats not the right pinion. You will want a 48 pitch (48P) pinion with a .125" hole. A steel pinion is fine but there are aluminum pinions and some other plated and/or hardened versions. Up to you what you want to spend, I'd just buy the cheap steel ones until you figure out what gearing you want then you can get better ones if you want.

http://www.tcscrawlers.com/Robinson-...6-p-16654.html
http://www3.towerhobbies.com/cgi-bin...?&I=LXEX14&P=7
http://www3.towerhobbies.com/cgi-bin...?&I=LXEX51&P=7
http://www3.towerhobbies.com/cgi-bin...?&I=LXEX71&P=7

phoenixtroy · 01-14-2010, 02:51 PM

Quote:

Originally Posted by fathead

news flash!! life is full of disapointments...get over it..haha

:( lol.

01-12-2010, 10:42 PM	#1
kmrunner Pebble Pounder Join Date: Dec 2008 Location: Atlanta Posts: 117	Disappointed Got my electronics in and spent all night soldering just to find out the set screw won't catch threads on the pinion. Can't get the pinion to seat on the motor shaft Anybody else run into this problem?

01-12-2010, 10:55 PM	#2
CruiserHead Quarry Creeper Join Date: Feb 2009 Location: Orangevale Posts: 223	You mean the threads are stripped on the set screw or in the pinion? Just go buy or order some new ones....They don't really cost that much. Hope you don't live in the boonies. You can also check to see if there is crusty thread lock on the threads that will clean off. Sometimes I have to take a little screwdriver and chip that shit off. Not likely with a brand new one though. Check for burrs that can be removed as well... I always use a tiny drop of blue thread lock on the set screw to keep it from coming off. You might as well buy some of that too. Its good cheap insurance(Don't use red and for god sakes don't use green. You want the screw to come back out). Good Luck, JB Last edited by CruiserHead; 01-12-2010 at 10:57 PM.

01-12-2010, 11:01 PM	#3
kmrunner Pebble Pounder Join Date: Dec 2008 Location: Atlanta Posts: 117	I tried 5 different set screws. I believe it is the threads in the pinion itself. I think they are cut too deep. The set screw won't catch until it is deep in the pinion (i set it with the pinion off the motor shaft and the set screw was way to deep by the time it caught threads) No way to set the screw while the pinion is on the motor shaft Guess I will be ordering another one unless my Hobbytown has one in stock.

01-12-2010, 11:49 PM	#4
Sverref Pebble Pounder Join Date: Sep 2009 Location: Norway Posts: 181	try one set screw in a larger size? or just do as somone here said, buy a new pinion gear i changed out my stock pinion cus it made a really mad noise:p and bumped it up too 16 teeths not 14teeths that is stock:p

01-13-2010, 04:41 AM	#5
RBCcrawler Rock Stacker Join Date: Feb 2009 Location: South Florida Posts: 68	Same thing happened to me. It was the last thing for me to screw on and I was like wtf, when threading on the pinion stripped out. Went to the LHS and got a pinion for under 4 bucks!

01-13-2010, 06:48 AM	#8
dkf Rock Crawler Join Date: Apr 2009 Location: Pa Posts: 563	More teeth on the pinion equals more wheel speed, less teeth less wheel speed more torque. If your running a 27t motor the 14t is ok at least for me.

01-13-2010, 07:12 AM	#9
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	you could drill and tap the pinion for m3 screws. Thats what I do on mine when I can't find a proper set screw.

01-13-2010, 07:12 AM	#10
Drail N.E.R.C.C Uncle Blinky Join Date: Dec 2008 Location: RUKDNME... Posts: 976	i run a 16 w a 45t and iv'e got the best of both worlds good stable crawl and descent wheel speed on 8 cells GSRCC Drail

01-13-2010, 07:37 AM	#11
kmrunner Pebble Pounder Join Date: Dec 2008 Location: Atlanta Posts: 117	I'm running a 45t so maybe i will go up to a 16 tooth pinion. Soldering that Tekin ESC was a PITA. Atleast for me. So dang small!

01-13-2010, 07:46 AM	#12
kmrunner Pebble Pounder Join Date: Dec 2008 Location: Atlanta Posts: 117	What are some aftermarket pinions that would fit the SCX-10? HPI? http://www.tcscrawlers.com/HPI-Pinio...5-p-17453.html

01-13-2010, 08:11 AM	#13
Drail N.E.R.C.C Uncle Blinky Join Date: Dec 2008 Location: RUKDNME... Posts: 976	i like the losi pinions allways fit good and the gear is stamped w the # of teeth... GSRCC Drail

01-13-2010, 06:36 PM	#14
JTank70 Pebble Pounder Join Date: Sep 2009 Location: New England Posts: 136	This happened to me on my Honcho. It was definately the pinion and not the set screw. Luckily I had my AX10 to rob the pinion from to get it going for now until I get another one.

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01-13-2010, 06:49 PM	#15
big bronco Rock Crawler Join Date: Mar 2007 Location: babylon, long island ny Posts: 887	i didnt have this probem... but i did get a set screw for the drive shaft that didint have any thread on it...

01-13-2010, 07:44 PM	#16
generalee7 Rock Crawler Join Date: Apr 2006 Location: Folsom, CA Posts: 620	Same thing happened to me. It's like Axial made them out of pot metal or something. I ended up buying a 3 pack of 48p pinions from Tower. I got a 13t, 14t and a 15 or 16t

01-13-2010, 07:49 PM	#17
Scottmisfits Rock Crawler Join Date: Apr 2008 Location: Calgary Posts: 913	The pinions from Robinson racing are threaded 4-40. The Axial ones are 3mm. If you have a 3x3 screw it should work. I used a Robinson steel one. I had three of them laying around that I forgot about, all new.

01-13-2010, 07:58 PM	#18
fathead Quarry Creeper Join Date: Jan 2006 Location: lehi, Ut. Posts: 384	news flash!! life is full of disapointments...get over it..haha

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