Drive gear

[Roughshod]

Hi guys,

My wife was so in to the Savage that she wanted her own...it's been an expensive couple of months at our place. Could be worse things to throw money at though.

Anyway. We got through the break in process without a hitch. Then she got an extremely weird problem. I can't figure it out unless it was a bad casting. She was literally pulling along at quarter throttle, put to brakes on to negotiate a turn and then got on the gas again. The truck revved but wouldn't move. The truck would roll forwards but would lock up when pushed backwards. I pulled the main gear cover off to see what was up, and found that about 4 teeth had sheared right off the metal drive gear and another 4 were almost worn. The plastic trans gears are FINE, there's a slight nick in one but that's all. The spur gear is also okay, there is a slight burring on 2 of the teeth but I think that's when she first noticed the lack of motion and I told her to kill it.

I've got the replacement parts to fix it, just seemed rare for the metal to strip and not the plastic. Everything else seems fine.

 

[HeartBreak]

If you're talking about the gears _in_ the transmission, it's a strong chance that the case-top wasn't all that tight to begin with.

 

[Rolex]

It it wasn't that, then my guess it was a defective part to begin with. Get in touch with HPI. I'm sure they'll back it up.

 

[Roughshod]

Hey,

I think it was a bad casting. I took some pics, hopefully they're clear enough for you to see what I mean. The drive gear on the left I believe is a defect, the one on the right is a replacement from my LHS. The left one's rear face is very rough, and "orange peeled". I informed my LHS of the problem and they said they would contact HPI for me for the parts. I think I'll fire off an e-mail to them as well.

 

[HeartBreak]

It looks like a bad casting to me. See the bubbly texture in the picture? I'm not expert in casting, but to me that screams air pockets.