Why not lock it in first???
 

Yesterday night, i was looking in my revo too see what i could upgrade on it, and start to think about the tranny gears. Why peaople don't let it in first gear and adjust the pinion/spur to have the desired top speed????
just tighten down the adjustment screw to avoid the tranny to shift in second:neutral:
It's a easily way than lock it in second.
For exemple, on my revo, i've the wide ratio, 4s li-po, and 38 spur, if i let it in first, with a 22T pinion, i hit easily 35m/h, it's a reasonable speed for the track:yes:

Need your comments, and BriandG comment is welcome!

I am guessing because 1st still uses the 1 way bearing, where mechanically locking it in second will allow for motor braking and reverse.

This is how my Revo is set up right now (locked in 1st). I'm running 3s and a 3200kv motor with an 18/36 ratio. It goes pretty good, but not quite how I want it to. I had great acceleration but the top end was just a little lacking. 4s with a different motor (~2500-2700kv) would probably be a much better setup for a 1st-gear-only Revo.

I will probably try 4s again soon, but I have so many 3s batteries that it would be a shame not to use them. If I can't find a good setup with 3s, then I'll put the 2-speed back in. I know that works how i want it to. Or maybe I'll get a bunch more 4s packs instead, we'll see :)

Four reasons (for me anyway):

1: The first gear has a OWB as people said, so you have to find a way to grab the shaft in both directions if you want elec brakes.

2: The input gear is smaller so there are fewer teeth. I figured fewer teeth would see more wear than a gear with more teeth.

3: You need a fairly large pinion and small spur to make up for the low gearing in the tranny if you want decent top speeds. Locking in second allows you to have more gearing options and uses eay to find pinion sizes.

4: Second gear has three options; narrow, std, and wide ratios. This allows for a little more adjustability inside the tranny.

Seriously? 3s on a revo is your standard setup??? Thats makin me wonder how that clutch setup will stand up to 4s, 5s and even 6s power that some will throw at it. Have you done any testing with real power in it?

I'm not sure what the concern is here. If you run your motor at 35K-40K then its going to perform just like a nitro. I've got my tekno clutch on my losi 8ight but haven't got it to the track yet. Testing wise, 6S has been great.

I have run the clutch setup on 5s, geared for 40mph and after the new shoes break in it runs very well and does not produce much if any heat.

1: I'am setup with mechanical brake ever.
2: You're probably right, don't think it!
3: 22/36 give me about 35-38m/h
4: You're probably right too.

So what i'll do, is keep my 2 speed setup, and when the second gear will explode due to the torque of the brushless Neu, i'll try to gear it and run in first gear. And when the first gear will explode too, i'll rebuild my tranny and lock it in second, but keep the mechanical brake, just to give a break to the controller in a hard racing condition.:wink:

Thank you guys for you reply!

3S and a higher kv motor and 6S and a low kv motor will effect the clutch in the same way. You're still gearing for the best performance and power output is similar (for the most part). How they effect the ESC is another story.
Also, he only said that that this was his setup right now. I'm sure he tries many setups looking for the best ones, even if it may seem unconventional.

a higher kv motor on 3s and a lower kv motor on 6s is not even close to the same thing! WAY more potential energy with the higher voltage. Way more power for the clutch to harness and transfer.

I was just very surprised to here 3s was his standard revo setup. General consensus around here is that 3s is not enough power for a Revo to be effective, which it sounds like he agrees with. As he said... when its geared for enough power on 3s it lacks the top end speed he needs. But the fact that he had "so many" 3s batteries around told me that was his standard setup. It did sound like he tested it on 4s, in the past though. I have taken the clutch setup and put it into a 1/8 buggy to run on 5s but havent had a chance to get it out to the track yet. Hopefully next weekend and I'll then find out for myself I guess.

Anyway... I dont want to hijack Davids thread so I'm done here.

That would take a few hours to get a lap on a 240meter long track!

The clutch performs fine with more power. There is a local guy running 4s and a 1515/1.5D with no clutch issues. I've run the clutch setup in buggies and truggies on 4s with no issues. It runs in the Revo on 4s with no issues. I'm sure it will work fine with 5s or 6s. Not sure why we're talking about clutches again, they hold up fine with .28 and .30 engines in nitro vehicles.

3s locked in 1st is what I'm currently running and it's not quite fast enough. 3s with the 2-speed is much faster and compares favorably to a nitro Revo. 4s and a 2000+ kv motor will put any nitro Revo to shame. In my experience, the 3s setup is a good track setup with plenty of power and great driveability which is why I've run it that way for so long, I don't bash.

35-38 miles per hour:surprised: it's not fast for you???

lol, you wrote m/h, which Serum jokingly took as meters per hour.:lol:

That's what i'am think:lol: My english is bad, but not to this point i hope:lol:

I know in touring cars, in MOD, and 19T alot of people run 5cell, and you gear up to get the speed back, it makes the car easier to drive in the infield, and lots easier to make consistent lap times... I run lipo now, but used to do 5 cell, and it worked very well

So after it caught on on TC, lots of people do it in off road now (more so in 2wd) But they do it in 4wd also

So I guess the same thing could apply with a MT

Maybe for racing, but I would never go back to 3s, the added heat and power loss is not worth it. I am actually getting sick of 4s, 5s is so much better. Personally battery technology needs to get alot better before lower voltage systems will work, and then hv will still be better! More voltage and less current is just plain better. I know that it can get to a point where there is too much power, but that is where diver skill comes in. Being able to out power a competitor (with the same driving skill) may just win you a race!

Im just pointing out thats probably why tekno is doing that.....

IMO a 3s MT sounds weird, but if your racing and it makes you win, I guess why not?

I dont race off road, so im all for HV

I race my truggy on 5s. I like it a lot. I also did some practice laps with 6s, much faster, but still controllable.
My transmitter comes with this new trigger thing that's just come out. It lets you vary the throttle input to the car while your driving, instead of having on off power. It's quite amazing, it lets you drive a fast, powerful car without having to use full power all the time. :sarcastic:

I have been racing my buggy on 5s also. Its great as long as you set up the esc with some punch control to help keep everything in line and are running a proper kv motor. I can run a 15 minute main on a 5s 4350mah pack and still have a reasonable runtime safety margin. It rarely even pulls over 50A peaks. The whole system is barely warm after the whole race.

I personally think people that say they are harder on their system racing over bashing are doing something wrong. When I'm bashing i am geared higher and mashing the throttle much harder than when racing. Racing requires control. Bashing is just seeing how hard you can push everything. I am much harder on my motor and esc when bashing IMO.

Patrick, I also have that new feature on my controller. It allows me to run my 75 mph touring car in my parking lot for fun! Hv is the way to go, battery weight is not a concern as it is the same if you are geared for ther same top speed and runtime, you are just trading voltage for capacity. I actually intend to run my plett maxximum on 4s in a crt.5 just to see. I wil gear it for 45mph or so and see how it does. I will never go back to 3s unless it is a very light 2wd 10th scale, that is it.