HPIracer4

ok i just took my dads savage 25 out for the first time this year. it was runnin alittle rich, but it was the first tank in a year so i didnt mind. but all of a sudden it came to a stop. my rear left tire stopped moving. is my rear differential shot? i wasnt jumping or anything, just cruising around the grass/concrete and then bam stopped and wouldnt move. then it worked and stopped again. only the one tire though, the gears off the motor arent stripped. help!!!!!!

Kanza

Is the engine still running after it stops?

If so, I would guess that something is binding up the left rear drive shaft.

HPIracer4

ya the motor still runs, it was wierd cuz i had stopped it, then gave it gas, and it wouldnt move, so i picked it up and the one tire didnt spin, so i spun it and it started to spin, then it locked up, i dunno, when i move it with themotor off sounds like a gear is shattered, but if thats the case why wouldnt it do the same to the other rear wheel?

Kanza

I wouldn't be able to say. It sounds like you're going to have to get you hands greasy and crack it open.

HPIracer4

yes it does lol, i guess ill open it up tonight and see. hopefully nothing major, seeing that as of right now im broke. then again, i do have a savage 21......but the rear end is off..........ill have pics hopefully tonight of my dads savage 25.

Rafiki

sounds as if the bevel gears inside the diff are broken.

HPIracer4

ya thats the first thing i thought of, i hope not though cuz that means i have to replace the diff cup and gears......:-(

DaveG55

Which Savage 25 is it? If it's an early one then it probably has the two gear diff. Those strip easy. I stripped mine before 1/2 gallon of fuel. If it is the diff replace them with the four gear set up. There much beter.

HPIracer4

im not sure which one it is, i forget which one. but ill find out when i pull apart the rear end. ii took these pics today, just a few minutes ago actually, its pretty much stock ask any questions if you want. got more stuff to put on it, but now with the diff problem it holds me back.............maybe not lol

alvinl

From that middle picture, it looks like you have something stuck iside the wheel. Could that possible be binding up the wheel? Not sure what it is or if it is even anything important.

-whitey-

whats with the servo looking thing in the middle picture it looks like its for 4 wheel steering never seen that before

HPIracer4

hah i was waitin for some1 to point that out, yea its 4 wheel steering, i put that on last night, my dad had it layin around (with some other mods ill b doing that he hasnt put on yet) concept was good, i had to drill out a different hole for it to line up, but its kinda tricky driving, especially when half to WOT.

HPIracer4

ya i just checked that cuz i didnt pay attention to that and it was just a leaf, but now that i played with it to see if it would lock up.....it stopped.....wierd

Kanza

Most four wheel steering equiped trucks are harder to control. If you have an extra channel, you set up the rear servo to be independent of the front. The stock HPI transmitter doesn't have that extra channel, but you could lock down the reverse lever into forward only and free up channel three for the rear steer.

After all, you already taking it apart.

DaveG55

4 wheel steering is an intresting novelty but unless you rock climb it's more trouble than it's worth. These things are hard enough to control at high speeds as they are.

HPIracer4

ya def. harder to control, takes time i guess, but ya it seems as though there was a rock lockin me up, wierd