token

I would strongly recommend the gearbox... you should not need the cups unless they really look bad.

here is the link to losi. this has all the manuals and setup sheets for the buggy.

http://www.losi.com/Products/Support...rodID=LOSK0800

jeff_ellis_9

iTrader: (5)

hmmm, I wonder something. Here I found a gear box set for the rear, it says 2.0 buggy/truggy, but it says it also replaces the original (losa4428) gear box. BUT, this set comes WITH the bearing inserts you guys were talking about. Would the ones in this set be plastic or would they be the aluminum ones?

http://cgi.ebay.com/LOSI-LOSA4450-RE...item5ad8abb31a

token

they are the plastic ones for the 2.0.... all alum parts are sold separate

jeff_ellis_9

iTrader: (5)

ok. thanks. I gotta get this stuff ordered so I can do my rebuild.

As far as just normal wear, how can you tell when your diff bearings are worn out? as well as center diff bearings? Or once a couple go out, just replace all?

Madbrad

iTrader: (30)

You can find out the hard way like i did last weekend. The rear diff bearings lock up and the friction from the drive shaft melted the housing. I lost power to the rear diff and only had power to the front.

To check a bearing its best to take them out and rotate them with your fingers. At the same time you looking for any spots that are not smooth. If it feels like its catching on a spot then replace it.

token

Tear it down and check each bearing by hand, if they are not smooth, replace..

get the little blue alu bearing holder for the center diff also

http://www.losi.com/Products/Feature...rodId=LOSA4442

jeff_ellis_9

iTrader: (5)

cool. so pretty much I would have to take diff's off, empty fluid, check bearings, replace if needed?

So about how often is it good to check?

token

After every race or two. Dude I personally spend alot of time wrenchin. After last season, I learned my lesson with DNFs and I hate when its a user made mechanical issue. So I try to rebuild the whole car after each race or right before a big race.

dreaux

iTrader: (5)

i just noticed this as well not to long ago. My front bulkhead has no play what so ever. The rear one has a slight tick of play in it. I just rebuilt but before there pretty good play on most of the outdrives. I know it's the bulkhead seeing as i have replaced most of the bearings.

I for one think it is almost impossible to get all the play out of everything. So how much is ok for these out drives? I have very little but you can still feel it when you move the outdrive back and forth.

dreaux

iTrader: (5)

just checked them again. they are all pretty tight but one. It has some play in it, but how much is bad? It's not that bad, not like the OP.

any reassurance would be great.

jeff_ellis_9

iTrader: (5)

yea mine are pretty bad. So bad it actually moves the axle some. In the pic I posted, where I circled is a small metal ring (thin) thats coming off from the diff and sliding down the drive cup. Pretty sure thats not supposed to be there. Im just going to tear it all down and rebuild them, put in the alum upgrade bearing holder and be done with it.

DOMIT

iTrader: (1)

That's probably part of the bearing. lol

jeff_ellis_9

iTrader: (5)

I was meaning to ask, I guess mostly to "Token", but anybody please answer if you know why.

But why do you strongly recommend buying a new bulkhead (gearbox)?? Please specify what could be wrong with the one I have?? I was just totaling up everything and for the complete rebuild, the gearboxes are the most expensive parts. thanks

jmaxey51

iTrader: (7)

driving it with something worn out ruins everything attached to it. it sucks but thats racing for ya. i check everything out everytime i run my stuff. i have never had a DNF except for two times one was because of a 10 dollar servo went after 5-6 months of use and the other was because of a glow plug and not having another one to put in. if something is loose/worn a little replace it ASAP or you can end up spending a 100 dollars versus 10-15 bucks. been there done that.

jeff_ellis_9

iTrader: (5)

Oh before I order everything, I can't tell by the losi.com manual, but how many of these bearing holders do I need for the center? All I can see on the parts manual on one, the picture hides weather or not I need one on the other side as well.