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12-18-2012, 08:36 PM
| #1 |
| Rock Stacker Join Date: Dec 2005 Location: North Alabama
Posts: 52
|  My rig is wayyyyy to slow
I just bought a rig off of craigslist that has this transmission in it.... RC4WD R2 Crawler Transmission X-0209 new #Z-U0010 - The Crawlers Store LLC And this thing is slow as hell, i just installed a 27t axial motor in it that i had laying around and it is still extremely slow.... what are my best gearing options for this trans to get some wheel speed? Thanks in advance |
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12-18-2012, 09:21 PM
| #2 |
| RCC Addict Join Date: Jun 2010 Location: fort collins
Posts: 969
| Re: My rig is wayyyyy to slow
need more info, what axles, what rig, maybe a pic. just a tranny isnt enough to give you ideas.  |
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12-18-2012, 09:30 PM
| #3 |
| Rock Stacker Join Date: Dec 2005 Location: North Alabama
Posts: 52
| Re: My rig is wayyyyy to slow
It's a custom build with ax10 axles.   Last edited by fatguy7814; 12-18-2012 at 09:39 PM. Reason: Adding pics |
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12-18-2012, 09:41 PM
| #4 |
| Rock Stacker Join Date: Dec 2005 Location: North Alabama
Posts: 52
| Re: My rig is wayyyyy to slow
I couldn't find any markings on the motor that was in it and it didn't spin very smooth anyways so that why i tried the 27t and it didn't help.
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12-19-2012, 12:35 AM
| #5 |
| RCC Addict  Join Date: Jan 2012 Location: Sweden
Posts: 1,809
| Re: My rig is wayyyyy to slow
What is the speed at what voltage in absolute terms? ("To slow" is very much related to perception. For me 2 mph top speed is doable but not comfy, 1 mph is to slow while 5 mph is plenty.)
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12-19-2012, 01:01 AM
| #6 |
| Quarry Creeper Join Date: Feb 2012 Location: New Hampshire
Posts: 207
| Re: My rig is wayyyyy to slow
from the pictures it looks to be a puller motor.
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12-19-2012, 06:09 AM
| #7 |
| I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
| Re: My rig is wayyyyy to slow
What batteries are you running? LiPO, NiMH?? What is the voltage, or cell count? If your ESC can handle it, going from a 2S LiPO to a 3S LiPO would gain some speed. Also make sure the rest of the drivetrain spins free. Maybe rechecking the ESC settings and doing a calibration. |
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12-19-2012, 07:48 AM
| #8 |
| Rock Stacker Join Date: Dec 2005 Location: North Alabama
Posts: 52
| Re: My rig is wayyyyy to slow
I'm running 7.4v nimh batteries because lipo is out of the budget right now. As far as speed goes, I'm just trying to sling a little mud when i need to ... it has tons of torque but no wheel speed when i need it. |
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12-19-2012, 07:49 AM
| #9 | |
| Rock Stacker Join Date: Dec 2005 Location: North Alabama
Posts: 52
| Re: My rig is wayyyyy to slow Quote:
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12-19-2012, 08:33 AM
| #10 | |
| Gettin’ back on the horse Join Date: Feb 2006 Location: Hoonsville
Posts: 6,671
| Re: My rig is wayyyyy to slow Quote:
 Your voltage is part of your issue, a 7.2 volt nimh isn't going to give you a lot of punch or top end. A quick solution will be to gear the pinion way up. I can't remember how many teeth I used to run on my old R2 trans, but it was big enough that I had to take the case apart to put it on. It still wasn't very fast, but was a big improvement. I would head over to your local hobby store and see what 32 pitch pinions they have. | |
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12-19-2012, 08:40 AM
| #11 |
| Scale Detail Engineering Join Date: Apr 2010 Location: Turtle Island
Posts: 5,573
| Re: My rig is wayyyyy to slow
Those Puller motors are awesome! You should take a closer look at it and see if it's in good working condition... you could also send it into Holmes Hobbies and for a few bucks they'll freshen it up for ya. Not sure if they will if it's not one of his... I bet if you take some close up shots of the winds, he can tell you more about it. If it's a 14t, it can handle up to 6s lipo, that'll sling some mud! Last edited by johnnyh66; 12-19-2012 at 08:44 AM. |
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12-19-2012, 08:40 AM
| #12 |
| RCC Addict Join Date: Jan 2010 Location: Vermont
Posts: 1,011
| Re: My rig is wayyyyy to slow
I have the HD r2 trans, and the buggest pinion you can fit is a 19. That's a pretty easy, cheap fix. When funds come available, look into lipos. Make a world of difference, not only in speed, but runtimes as well. Good luck! Last edited by tedo; 12-19-2012 at 08:41 AM. Reason: quoted wrong person... doh. |
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12-19-2012, 11:37 AM
| #13 | |
| Rock Stacker Join Date: Dec 2005 Location: North Alabama
Posts: 52
| Re: My rig is wayyyyy to slow Quote:
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12-19-2012, 12:52 PM
| #14 | |
| RCC Addict Join Date: Jan 2010 Location: Vermont
Posts: 1,011
| Re: My rig is wayyyyy to slow Quote:
It's an 18T. You wil be safe with this size, because (like mentioned earlier), the bigger pinions can have issues with fitment. Also, look into that Puller motor you have. You may have a gem there. | |
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12-19-2012, 02:09 PM
| #15 | |
| Rock Stacker Join Date: Dec 2005 Location: North Alabama
Posts: 52
| Re: My rig is wayyyyy to slow Quote:
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12-19-2012, 02:10 PM
| #16 |
| Scale Detail Engineering Join Date: Apr 2010 Location: Turtle Island
Posts: 5,573
| Re: My rig is wayyyyy to slow
I think the 7t will go up to 3s. |
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