13t pinion?

[Manfjourde]

What 13t pinion are you guys running? I have the stock in it for now because when I installed some Robinson racing ones, the mesh was too tight which is odd because the should be the same size. I don't have adjustable motor mounts.

 

[william g]

I always ran robinson racing pinions.
RC4WD makes some 3mm 13 tooth 32 pitch pinions, and I believe ofna has some to.

 

[kjr2]

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXEW98&P=7

 

[TXT-2.0]

i know it sounds silly but did you count the teeth to make sure it wasn't a 14t but mistake

 

[Manfjourde]

i know it sounds silly but did you count the teeth to make sure it wasn't a 14t but mistake

You know, I didn't LOL but I had 2 of them that gave me issues, so I'd be surprised. Do you guys run the adjustable motor plate or stock and it works fine with the tower link above?

 

[kjr2]

I use the ones I linked above in all my Clod for the last 10 years stock gearcase no problems. Maybe you counter gear is messed up?

 

[Manfjourde]

Good to know, I'll have to check my gears and see if I can figure out why it's too tight. How long do you guys think the stock ones hold up with 3200kv motors and 2s?

 

[kjr2]

Are you using EZruns or Tacons or something?

 

[william g]

stock pinions get noticeable wear in just a few runs, then they start wearing the counter gear so both should be replaced or a worn gear WILL wear a new pinion even if it's a harder material.

 

[Manfjourde]

They are tacons. Thanks Bill, I'll check that out soon before I put more runs on it. I'm a little bummed though since I got 2 of those pinions and something is off.

 

[william g]

2 things
Did somebody put a aftermarket counter gear?
OR
Did you mistakenly put a MOD1 pinion instead of 32 pitch? They look similar, but are not.

 

[Manfjourde]

I double checked and the pinions are the same part numbers as above, i built the axles so the gears are stock. I should be able to test tonight.

 

[kjr2]

I suspect it might be the counter gear. If the old pinions were worn they probably affected the teeth on the counter gear...

 

[Bubbabaxter]

So it meshes fine with the stock aluminum pinions? If it's too tight with the RR pinion than a worn counter gear seems unlikely, the mesh would be too loose, not too tight. Check that the pinion is at the correct depth so the set screw isn't contacting the counter gears, make sure the sleeves are in the gearcase. If it's doing the same thing in both axles than it almost has to the the incorrect pinion. Some rare issues that I've encountered are distorted cases and bent motor shafts, both of which would be unlikely.

 

[Manfjourde]

Thanks for the points, yeah nothing is worn, this truck has less than 1 hour driving on it and most is testing. I'll check those set something screws and tubes. Hope to report tonight what I find.

 

[Manfjourde]

Well I did some testing tonight and I have no idea what is wrong. Both pinions I have are too tight in both axles. I counted and they are 13 teeth and 32p. I remember this past summer when I was building the truck I tried the RR pinions and it was the same story - axles and gears were new too so who knows why it would have been that way. Anyway, do you have anymore suggestions for pinions? The stock tamiya are very smooth but I'd like a harder metal. Also, if anyone wants these 2 I'll sell them for cheap - mostly shipping

You think the traxxas emaxx pinion would be better than stock? I ask because my lhs will have them.

 

[Bubbabaxter]

They are decent pinions but won't fit any different than a RR pinion of comparable size. You said the mesh is too tight but how tight are we talking? If you push the clod under it's own weight does it roll or stop dead in it's tracks? Keep in mind that if you have some runs on the stock pinions, they will be worn down to the point that the teeth won't have as deep a contact pattern as a steel pinion with no wear.

 

[Manfjourde]

Keep in mind that if you have some runs on the stock pinions, they will be worn down to the point that the teeth won't have as deep a contact pattern as a steel pinion with no wear.

Even without runs when everything was brand new, they meshed perfect and the RR didn't. I have/t pushed it but it makes an aweful grinding noise when I give it a little throttle. Would it be bad to just install them and give them a few runs in hopes that they break in together and mesh better or would that ruin the counter gear?

 

[william g]

I say just check to make sure it's depth is right and not rubbing the case and run it. It'll wear in or you'll find the hidden issue, but at least you'd know instead of just using the tamiya gear KNOWING it'll munch it sooner or later.

 

[Manfjourde]

I'll give it a shot - I blame you if it poops Bill!:emot100: Maybe I can shoot a video and let you guys hear/watch it to see what you think too.