Thank you for taking the time to do this tutorial. We greatly appreciate it. I have a first gen 2.5 and thankfully haven’t had an issues, but if/when I do I’ll rewatch this again.

I can remember drilling that hole out and using a larger pin from the driveshaft and never had a problem with breakage again.

Just 2 try help you can blow compressed air over spur gear with blow nozzle, test all funtions and shift points 2 speed reverse just blow other way.

screw pin part number TRA4995 assembly 3x12mm

Love these videos

Hi my tranny only engages receverse only no forward what can I do thanks for your vid

Robinson Racing Products used to make an all steel gear set last I knew.. but shame it’s a forward only kit 😢!! My T-Maxx is from June 22 2005 and I just busted my transmission... spur gear turns only so far then catches bad and same thing when spun in opposite direction... I think I broke that pin or something as the little black shaft out other side of trans I cannot turn it at all (it’s supposed to spin freely in only one direction)... you know I’d you can get that pin in a hardened steel? I have a trx 3.3 engine in my max and it was screaming great.. but I got next to a tree, and reversed from a dead stop and got on it a little too hard I guess and it went in reverse but I heard it sound like it went thru crunching leaves, went over to clean it and shift to forward same sound maybe bit quieter... I had this since new June 22 2005 and had no trouble but original silver head 2.5 engine was too temperamental since a 2.5 isn’t an ideal engine for a big monster truck (2.5r is slightly better maybe), and the 3.3 with resonator pipe, and a 3 stage hi flow oiled foam air filter is perfect really... shame Traxxas didn’t tell me that this pin could snap due to a 3.3 engine...

That pin is called a threaded axle or shaft cross pin.

Love your videos, random question what brand of Torx Drivers do you use? I am in the market for a new quality set.

What do people mean when they say you have to adjust the transmission

im surprised that these nitros use plastic gears all my brushless need metal and even the metal ones break, expected these engines to be harder on the drivetrain

hey does anyone know if you can use the output shaft from the 2.5 transmission and put it in the 3.3 transmission so you can still use the same center drive shafts and break disk. any help would be appreciated.

Thankx that's cool

My transmission is good but the only issue is reverse for some reason if I switch to reverse while it’s running it just gets out of gear but if I have the engine off then start it in reverse it will work but then if I want to go back in drive it will get out of gear so I would have to turn the engine off again then have it in drive. Help if possible

Jw wats the number on ur motor bc mine is wicked low i actually sold it to a buddy n its on a slash now

Robinson racing may have them or integy

Hey I got I real problem with mine the spur gear I spin it as fast as I can with my hand but the out put shafts where the drive shafts get attached to don't spin at all I spun the spur gear both ways and nothing

I need that same pin for mine that’s what broke in mine

Mine just won't engage the one way is working and the pins are fine same with the catches it just won't engage its spinning the right way as well can't find out what's wrong.

I'm rebuilding a Revo 2.5 transmission.. you need the sensor to protect you from slamming it into reverse at full throttle lol

4995

The best way to fix it is to throw it away because traxxsd sucks and go buy a losi or team associated product