Lets fix the Savage Transmission

[lincpimp]

This is what i will use:

http://www.lucasoil.com/products/dis...Oil Stabilizer

[JasonB]

Originally Posted by lincpimp

What kind of oil/lube are you using?

Back in the day, Sikeston34m was using stp oil sabilizer. Thick stuff, and it really sticks to the gears. He was not having a leak issue like you are having, and all he did was use rubber sealed bearings. Pretty sure the stock bearins are rubber sealed in the flux anyways.

I'm using STP Oil Treatment (link) and stock rubber sealed bearings. Perhaps Sikeston was running less RPMs back then. Mine leaked like a sieve, everywhere except the parts I had siliconed together. My transmission has seen over 1 year of heavy use, so perhaps a new transmission won't leak as bad. I think I can seal it up well, but that will take a complete break down and clean up again . . . for that I'll wait till this gear gives up it's ghost which hopefully won't be for a very long time.

[JasonB]

I decided to take the tranny out to clean up the sticky oil and stuck on sand and take another look at the gears inside. Since I've sealed up the case, I use the adjustment holes to check the oil and peak at the gears (hex driver makes a great dip stick). Still zero gear wear after more than a dozen runs. I'm thinking these gears are going to last for a very long time. Only thing I can see breaking them now is too much torque shearing off the teeth from locking up the tires or doing several back flips or something of that nature.

Why check the oil? Well it's gradually being forced past the bearings, so I'm just making sure there is still enough left in there to do the job. Perhaps it will get low enough that it stops leaking but still keeps the gears lubed. It's down to under 1/4" so I think it's getting close to that point. Already have a permanent fix in mind for the bearings, but I'm not ready to totally break down the case, degrease it, clean off the old RTV, etc, etc yet.

[ljoncp]

Do you think white lithium grease would work as good as the STP oil treatment?

[JasonB]

I don't think any kind of grease will stick at those RPMs, but who knows. Like someone mentioned earlier they make grease sticky enough to stick to a motorcycle chain.

I found the link to redshift's comments on the STP stuff; it's ear the bottom of the thread. Sounds like less is more. (http://www.rc-monster.com/forum/showthread.php?t=20896)

[ljoncp]

Just picked up the STP oil treatment at irving down the road lol.

Was not hard to find at all. And only four bucks!

Thanks for the info Jason

[JasonB]

Glad I could help. Don't forget to seal the bearings to the case and to the shafts. There are also two or three holes that aren't obvious on the case that I sealed up a long time ago, before I ever thought about doing the lube thingy. Look around, you'll find them.

[JasonB]

I transferred everything over to a spare tranny case and sealed it up tight. Even though the gears have more than a couple dozen runs on them they still look brand new.

Messy inside

After ~2 Dozen Runs

Cleaned them up for a closer look

[Jahay]

they seem to be ok... But my gears always looked fine. They just broke into a million pieces when they wanted??? They never wore badly, just shattered at the most inappropriate time.

[JasonB]

I hear ya Jahay. I think it all depends on the batch; some are hard and brittle, but most are soft and chewey. I've gone through 4 sets of the stock metal gears and 1 set of the lightweight gears. The orininal set granaded and all the others ground down to sharks teeth.

[thzero]

Ans you gotta remember that it was all designed for nitro power, and a certain price point, which brushless completely demolishes