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02-17-2010, 09:10 AM
| #1 |
| Pebble Pounder Join Date: Oct 2006 Location: SOCAL
Posts: 123
|  robinson pinion question
So if you've seen some of my recent post I just got the LCC. WOOOHOO....anyway I went out and picked up some pinions. I got the robinson racing pinions 13 through 15. This is my question. The usable surface of the pinion doesn't go all the way across the gear in the tranny. Was I supposed to get pinions with larger usable areas on them? What I'm saying by usable area is the area that has the set screw obviously cant run out where the tranny gear is or you would have issues. The current pinions cover about half the tranny gear. Will this be enough or will I end up with a stripped gear. Are there some different pinions that would have been better for me? Thanks.
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02-17-2010, 03:10 PM
| #2 |
| Pebble Pounder Join Date: Sep 2005 Location: West Coast Canada
Posts: 177
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My LHS had some Losi pinions that, amazingly, fit perfect, :-P Anyway if its only covering half the spur gear then maybe get longer pinions, but its not absolutely necessary for the pinion and spur to be the exact same width.
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02-17-2010, 03:15 PM
| #3 |
| RCC Addict  Join Date: Jun 2009 Location: California
Posts: 1,494
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The pinions you have will work perfect...It doesn't need to cover the entire spur gear |
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02-17-2010, 03:36 PM
| #4 |
| Quarry Creeper Join Date: Dec 2009 Location: Rocklin
Posts: 209
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I have some brand I don't even remember the name of that seems cheap. In reality though they work perfect. If it doesn't slip or strip my gears I can't see why I would spend more to get something else. My pinion gear also does not run clear across the spur gear. I am actually pretty shocked how much force it deals with. During some testing I was holding the rig down progressively harder while applying the throttle to see if I was having any issues and the force it pulls with is pretty substantial. Somewhere on youtube there is a video of a 60-70lb kid being drug across the carpet by a Traxxas Summit, curious to see the inside of that tranny. |
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02-17-2010, 04:08 PM
| #5 |
| Newbie Join Date: Dec 2009 Location: hillsboro
Posts: 46
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I was using the robinso pinions gears as well...With a ballistic 21.5t brushless on 4S and a 14t pinion I ate the idler gear for lunch....Use the LOSI pinions didnt have a problem till I went up to the 14t robinson pinion...SOme applications where your pushing more power the extra gear coverage will be needed...just my experience...
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02-17-2010, 07:33 PM
| #6 |
| Rock Crawler Join Date: Apr 2005 Location: Monroe, Louisiana
Posts: 550
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I beveled the motor side portion of the idler gear just enough to get the pinion more to the middle of it. I have been running it like this for around 6 months without problems. 12T RR pinion |
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02-20-2010, 12:12 PM
| #7 |
| Pebble Pounder Join Date: Jan 2009 Location: Morgantown
Posts: 104
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My LCC ate the idler gear on the second pack. IMO it had a lot to do with the clutch being to tight. If you get the LCC in a bind with the clutch to tight the brushless power will take teeth off the idler gear.
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02-20-2010, 09:14 PM
| #8 |
| I wanna be Dave Join Date: Mar 2009 Location: sittin in the sky
Posts: 4,630
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works fine half way covered for me and if you do strip one side of the spur, just flip it!
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02-21-2010, 05:57 AM
| #9 | |
| Quarry Creeper Join Date: Oct 2009 Location: Iowa
Posts: 296
| Quote:
I stripped the spur gear in my LCC running a Robinson 14t pinion. Replaced the spur gear and the pinion with one from Losi, and haven't had a problem since. RRP pinions are soft, not quite to spec, slightly off pitch.....just a cheap generic version of the real deal. | |
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