WHere to find pinions with long shafts? - RC-Monster Forums

jpoprock · **WHere to find pinions with long shafts? -** 08.06.2009, 12:45 PM

I have this EJato for a while, but never really dug into it. It runs, and works, but the configuration of it needs work (not done by me), and I'm at a point where I can either invest some time in it, or unload it and get it out of my hair.

It runs ok. It's kinda glitchy, and I had my SW replaced by CC... but haven't tried it in this truck yet. The problem with that is, you have to be careful where everything is located in relation to the other components I guess. It was glitchy even with the possibly bad ESC in the rear of the truck too. So, I'm not sure about that yet. But I will say, that with a CC 5700kv and the SW on 2s, this thing FLEW! Nice and smooth.

Anyway, this isn't a big deal... but I'd like to maybe try and get a better mesh. As it stands now, the pinion is BARELY able to attach to the motor. I can't move the motor over, without making up a new mount, that has a curve to it. And there is no way to put spacers btwn the mount and the tranny because there isn't enuff meat on the tranny housing to do so.

So, my question is... WHERE can you buy pinions that have long shafts on them, and is that the best solution?

jpoprock · 08.06.2009, 12:51 PM

Is a 5mm bore reducer what I need?

http://www.rc-monster.com/proddetail...reducer&cat=40

If so, what size? Then someone said I could use any 5mm pinion or that Tekno makes long shank pinions.

I've had suggestions to swap the spur to a 32p I think.

lincpimp · 08.06.2009, 12:55 PM

You have a 32p spur on the jato (mod .8= 32p) and your current motor has an 1/8 shaft.

Looking at your pics you have enough room to put 1/8" spacer between the motor plate and the tranny, that will cure most of your issues.

As far as I know all of the long shank pinion are 5mm bore, so you would need to swap motors, or possibly buy a bore reducer. But I have not seen 32p long shank pinions. I would put some spacers behind the plate, and stick with the pinion you have.

jpoprock · 01:17 PM

Thanks. I thought of putting spacers behind the plate... but as you can see, it's not going to really give me all that much more. But maybe enuff to get a better bite on the shaft. I don't really want to get too deeply involved with this truck, cuz I'm not sure it's going to be something I'm going to want to keep. Just not sure. It seems like it's going to take a lot of time and experimenting (and fabbing up stuff), to be right. I'm kinda picky, so I don't know if I have it in me to put the time in. I'm getting ready to build an XXL BL Conversion so that is where my time will go for now. I was hoping for a quick fix for the Ejato, and this might work.

Oh, and does that circular plastic part that's part of the Tranny moulding have anything to do with holding the motor plate on? Or does it really not do anything? I was thinking that since the motor plate fits around it, that is definitely helps hold the motor plate steady.

And then of course, figuring out just where to place the battery, RX, ESC, etc is the next step I guess.

If I lock the tranny into 2nd gear, I can ditch the braking servo. I did some research on how to do that, and it seemed like a little more work then I was ready to take on comfortably. I could buy a single speed conversion just as easily too. Heck, I've even got a New Era THREE speed conversion if I wanted, but I hear that it doesn't give you much. I'd put that in my Nitro Jato if anything.

jpoprock · 04:03 PM

SO, if I wanted to put a bore reducer on that shaft... is the bore reducer to slide on to the shaft, which then allows me to run 5mm shaft pinions. So, are the shafts on the CC 4600 type motors 1/8"? Or 4mm?

Never mind... I found it. 1/8". Thanks Jason! You're welcome Jason!

simplechamp · 12:34 PM

Couldn't you get a helicopter Neu or other heli motor with the longer shaft?