metal spur gears

[MaxiMumST.2002]

ok listen to this crap i got a brnd new metal spur gear made by duratrax and i installed it properly and i was driving it all of a sudden nothing wont move so i look down at it every tooth except for 3 out of the 52 teeth were gone. What can i do so i dont keep wasting money on them? I have a friend that can make 1 out of billet steel will this work or will it be to heavy?

All opinions very appreciated


Thanks..Nick

 

[zoeybadm]

Can we see some pics please.....I have never heard of someone stripping off all of the spur gears.....what type of motor are you using?

The gear mesh is most likely to blame for this. I am using Robinson Racing metal spur gear with hardened clutch bell and have had no such problems but the gear mesh is very sensitive.

 

[scottm]

I know exactly how you feel. When I ran a steel spur in my cybermaxx, I killed clutch bells every few tanks. When I ran plastic gears, I wasted the spurs, sometimes 2 per tank! Gear mesh is critical, but hard bashing like I do will kill them. What kind of car is it? Extended tmaxxes are bad because of chassis flex. If it is a tmaxx, use Robinson plastic gears until the new RC Solutions tool steel gear comes out. It is narrow like a buggy spur, and uses a buggy 1/8 scale clutch and bell. Here is one on my truck. It has at least 40 tanks on it with no wear on the spur or bell.

 

[olds97_lss]

I use the RRP steel 72 with a 19 cb. Probably have about 2 gallons through it. No wear on the spur, minimal wear on the cb.

This is in a maxx with a 21 conversion by the way.

 

[PhillyB]

if your gear mesh is correct - and you need a tick of back and forth movement with smooth spinning (if FOC) - then your chassis is flexing and chewing up spur gears. a common problem with the stock t-maxx, from what I've heard. when under stress the chassis flexes and pulls the motor off the spur, chewing gears. i suggest better chassis braces,

http://www.unlimitedengineering.com/cgi-bin/store/13230.html

for 60.00 they fit the stock chassis or the predator chassis, and eliminate all flexing.

 

[Ta Da Maxx]

An easy/cheap solution for flexing is a center skid, it really helps tie the chassis together. I got a T6 alum blue center skid and another lighter alum one for $5 shipped. Mesh, can't stress enough check every run and ever 2 minutes of the run to see if u still have good mesh. You can have bad mesh and toast a spur in 2 seconds, but u can have perfect mesh and it will last nearly forever.....No different than tuning an engine, but that would be awesome if an engine lasted nearly forever.

 

[El Pirata]

Originally posted by zoeybadm
I have never heard of someone stripping off all of the spur gears.....

Here's one from my savage. Error can show you a steel spur completely stripped.

 

[zoeybadm]

Originally posted by El Pirata

Here's one from my savage. Error can show you a steel spur completely stripped.

How in the hell did you do that? Do you have so much chassis flex that your car is like a noodle? Error, you must have had way too much gap in your gear mesh to strip the metal gear all the way down......:lurk:

 

[El Pirata]

Error overpowered his. I can't remember how I did mine. Just another bash session if I recollect.

 

[gutterboy]

Just ate my clutchbell up. Already went through 3 of them and my metal spur gear still looks new. Time to by a harden cb.