ryan17

hi all,have a problem,when truck is on bench all 4 wheels spin
but only the front wheels drive it on ground,any ideas?thanks.

46u

My Feedback: (3)

Rear differential or one of the setscrews to the drive cup.

ryan17

have took back end off,everything looks ok,

badboy2

My Feedback: (13)

make sure the set screw on the center are there..

ryan17

thanks,could you be more pacific,im still learning
all screws on the cups seem tight,when i turn front wheels the rear cup spins ok,but only in one
direction,that normal?

-SomeGuy-

Did you take a look at the diff?

ryan17

yes have in my hand just about to grease up,
every thing is spinning ok all teeth still there,
just noticed that when i hold rear cup i can still spin the wheels,
somethings slipping,tightened screw in rear diff but it feels rung,like it not go tight,

-SomeGuy-

Ok so the two rear drive cups are in place as well as the screws that hold them in place and the diff is intact right?

Maybe the wheels are rounded out?

ryan17

im thinking is that to oil the diff only?

-SomeGuy-

If you could put up some pics that would make it easier.

ryan17

yeh i can take some,
tell me of what,cheers

-SomeGuy-

Pics of the diff, get a close up of the teeth on the big outer gear. Of the drive cups and of the hexes of the wheels while your at it.

ryan17

the screw in the diff,whats that for?

JUCD VPR

I had the same thing happened after i ran into a set of concrete steps at about 20 mph. It ended up blowing the rear diff and i had to replace alot of crap.

ryan17

what did you need?
what is the crub screw for on diff?

Chronic

Check the pins in the diff shafts, the ones that go into the groove in the back of the side gears. I had the same thing happen to my LST2. The front just went completely dead, and when I pulled it apart the pins were broken into three pieces.

JUCD VPR

Sorry man i can't remember everything i needed. I was so busy i just ended up taking it to my local hobby shop and he fixed it. basically i needed a whole new rear end (Diff). I have no clue how it happened either. I ran STRAIGHT into the concrete steps and it blew my REAR Diff? What is up with that? You'd figure i would have broken something else, that actually hit the steps but nope.

ryan17

http://s144.photobucket.com/albums/r...Picture025.flv

have a look at this,when i hold the drive cup the wheels stop
no slipping,is my problem elsewere?

-SomeGuy-

The video is to dark, can you shoot it again?

Stablock

I think you have to take the diff out and open it up.

ryan17

yeh took diff apart and the bevel does not look to bad,
edges a bit pointy and sharp,going to bring it to lhs and see what he thinks,
other than that i can not see the problem.
was due a good clean anyway[]

ryan17

ok getting mad now[:@]
fitted new bevel and diff gears,now after a 5 min run,
quess what?
the feckin thing done the same thing.
any ideas why???????[&o]

-SomeGuy-

If the diff is intact then theres not much to look at. Check the hexes in the rims, make sure they are not rounded out. Check the drive cups again in case this time it is a grub screw. Appart from that im at a loss, i dont think its the tranny but i could be wrong...

ryan17

yes yes and yes,im at a loss too.realy .THE WANKER THAT SOLD IT TO ME RTR
feck spent a fortune and still hassle,f U k this,not impressed.yeh savage
not all its made out to be,but i spent less on the sons kx scrambler
that he raced all year with,ive lost hope in the savage,NEVER BUY OF EBAY IF HES CALLED SHAWN.
yyes im fecked off. and he will getting a visit from the man,you know who you are.
#
RIRA FOREVER.
WENEVERFORGET
CHUCKYRLA

SAVAGEJIM

There is another grub screw to check for. This grub screw is called set screw part # 86094 and is right behind thre tranny case. Check this diff cup here by the tranny case.

Set screw 86094 is notorious for falling out and is one of the major culprits for turning your beloved 4wheel drive Savage into a front wheel drive. (Other than 86094 falling out, another more expensive reason why your Savage is now only front whel drive is because of the rear diff being stripped; which you guys already discussed above in considerable detail.)

Anyways, when you go to your local RC store, make it part of your errand to pick up several bags of spare 86094s, that little beeyotch will fall out on a regular basis. You might want to also invest in some red loctite to just about permanently glue that 86094 into place. Even with red loctite, I still had 86094 fall out on mine and turn my daily basher into a front wheel drive