Won't shift gears, Tuning help.
First off, I'm new to the forum, actually new to traxxis all together, I use to have a Baja, but since money is getting a little tight for a bit, I thought a nice fast 1:10 basher might be good for a bit.
Anyhow I decided on a Jato, and I'm glad, they are a great car, and can take a beating. I have run into a little problem however. A couple of runs ago I decided to properly tune the idle, and accidentally adjusted the low speed (first time with nitro... Oops). Anyhow. It completely stuffed everything, it was spitting smoke like it was rich, but getting temp over 260 like it was lean, so I reset to stock.
Now, when trying to tune it, I set up the low speed so it idles for over a min, no issues, then worked on the HSN, here's where I am stuck
When I floor it, it doesn't seem to bog, and it takes off pretty fast, but it seems to just rev right up, probably higher then it should, but it doesn't kick into second gear, like its stuck. I messed around with HSN and LSN, and at one point got it to hit second for... Well a second, but after tuning it won't hit it again. I know I'm doing something wrong, just thought before I go out again I'd check with the experts. (got a week to gather info as I managed to hit the one poll in the entire 100m x 100m car park!
Look forward to hearing from you guys
Last edited by Kirtangl; 06-11-2012 at 03:00 AM.
To make it shift into second gear, you need to adjust a screw in the transmisison. It'll tell you how in the manual.
RC Turnbuckle Jr.
first, i would advise you to tighten the slipper clutch nut clock wise a very small tiny increment.
if it didn't work go ahead to the shifting screw on the transmission housing.
So you think it's the transition, not the tune. The clutch shoes should be fine, if anything it's engaging to quickly. The thing is, the second gear only stopped working when I accidentally changed the low speed...
RC Turnbuckle Jr.
it's probably a tune issue...
if you contact traxxas support they'll advise you first to tighten the slipper clutch nut a bet clockwise as a first step, then they'll ask you to do your best to tune it for the best performance you can achieve.
was is shifting to the second before this time ?
if yes, all you should to do is to re assign back to factory defaults and tighten the slipper clutch a little bet then start from that point.
if you replaced the tires into a bigger one you need to drop 1or2 teeth from your gears to make it easier for your trany to engage to the second gear.
i'm not that expert in tuning, just telling you what i'm sure of.
Thank you Desert.
Yeah it hit second, it was a bit weird when I first got it, it didn't even move until about the last 2 tanks of break in. But after a tune, it got to second gear. I have put bigger wheels on it, but it still hit second gear without having to change the tune. I will try the slipper clutch, now that I think about it, I have noticed the gears jump back and forth when its idling.
Might take me a while to get it working, hard to get parts here. Will let you know how I go.
RC Turnbuckle Jr.
i wish you will solve it soon. just take your time ..... it's a part of the hobby i guess.
Well... I edit it haha. I had to replace the top front bulkhead after a bad crash, I decided to replace bottom as well, all back together OK. But the roll-cage no longer fit, it was bent out of shape!
I put the stock roll-bar back on But stupidly forgot the roll cage came with its own screws to go into the shock towers, and I put them back in without the roll-cage, which obviously screwed straight into the 2-speed... Think I might just get an entirely new transmission, as the screws had stripped a bit also.
Last edited by Double G; 06-15-2012 at 01:21 PM.
Reason: lots of language removed