RockRunner

No, I believe it's stock 12T. Does it urgently need 10T for 3S?

I'm going to be pretty gentle with it until a couple of new 2S lipos arrive for my son (he's borrowing mine so I have to use his 3S batteries).

grit621

I think they provide the smaller pinion specifically for 3S packs. Also, I have the impression the people with bearing problems were running 3S packs. I'd imagine a lot of it has to do with how hard to run the truck too though.

RCfanatic187

I wouldn't go out bashing with the higher pinion, but others with more experience may be able to chime in.

RockRunner

It had so much power on 3S with the stock pinion that I held full throttle once (just to see). It builds up so much speed that it's basically useless for me personally for what I want the car for (I'm not racing it). 2S power I can use and even that need moderating carefully most of the time on dirt. I was mostly just touching the trigger on 3S and it was kind of annoying constantly holding it back. I felt it got noticeably hotter just tootling around trails too.

Happily went back to 2S which is basically lineball as fast as a stock Yeti on 3S. We had a number of races and speed was very similar. That's a perfect setup for me anyway; cool and plenty fast with loads of grunt when you want it.

RCfanatic187

I ran mine on 3s with the 10T pinion, and really in my opinion it felt pretty solid. Maybe just adjusting to the throttle curve, but nonetheless I think the moral of the story is. If you prefer 2s run the stock pinion. If you like 3s run the 10T.

RCfanatic187

Well after a day of bashing the truck around yesterday. Most of which was pretty mild other than heavy on the go trigger. Somehow my pinion gear set screw came loose, and spun through the center transmission housing. Set screw had loctite on it, and havent had any issues till now(15+ packs). Weird, but a relatively easy fix. Also a good time to inspect the center diff, and I will put a picture up as soon as i pull the truck apart.

fyrstormer

iTrader: (1)

I use red Loctite on pinion and axle setscrews nowadays. It's not actually permanent like the advertising claims, but it sure does hold stronger.

Smoovy

What causes the truck to shimmy left and right under acceleration slightly and how can I eliminate that?

RCfanatic187

as in torque steer?

Smoovy

Yes. I'm trying to determine if avc is trying to correct it under load. It makes it look like the back is wiggling left and right. To put this in context, my sc10 4x4 nor slash 4x4 do this under load

mewalsh100

First, try turning the AVC off, or all the way down if you're still using the RTR transmitter. If it's the avc trying to compensate, this should give you an indication. I personally don't run the AVC on mine.

Secondly, as compared to your sc10 or slash, this is a solid rear axle truck so you're going to notice a lot more torque steer than independent suspension trucks.

Lastly - i've played around with my sag, dampening quite a bit and mine squats and scoots pretty good, and straight now. Hope this helps!

mewalsh100

Running the same transmitter. Agree - great features and tech at a sweet price! Plus, I swapped the new receiver that came with the trans in to the Baja Rey and used the RTR receiver in another vehicle and was able to consolidate some transmitters!

Smoovy

Thank you, I will try that and definitely look at some adjustments like you mentioned

fyrstormer

iTrader: (1)

That kind of shimmying is almost always a combination of an overly-sensitive gyro and/or a servo that's too slow.

RockRunner

I found that with the RR. Too high AVC setting and it snaked down the road. Backing it off totally eliminates the shimmy. I run my AVC low for better hookup off the line which thankfully then doesn't slow down my steering too much or make it act drunk.

I definitely feel it needs a far faster and more powerful servo. i.e. a pretty expensive one unfortunately to make the best use out of the AVC anyway.

Fyrstormer, did you remove the gyro RX to try to 'improve' the truck with a non AVC RX or did you do it so you could race the truck? Did it make a difference (positive or negative)?