Asking for a different reason. Center Diff Oil Weight?

[olds97_lss]

Hey,

I just got into the buggy scene with a non-top of the line buggy, but it's sweet to me! Anyway, the last time I had the buggy out, the center diff would transfer almost all the power to the front tires when I was on concrete, grass or dirt. You could hear the engine go from lugging to screaming WOT. It took me a little while to figure out what was happening since this is my first vehicle with 3 diffs. But I noticed the front tires just spinning to beat hell and the back tires not doing a whole lot. It only does it when I'm heavy on the gas... really heavy.

Since I bash only, I really like the locked center like the savage. What would be the ramifications of running 50K oil in my center diff on the buggy, but leaving the front and rears with 10K? Would handling really suffer that much? Since I don't race or run on tracks with hairpin turns, would I really care?

Just curious as I'm supposed to be recieving a few parts for it tomorrow and I'll have the engine out. I figured I'd fiddle with the center diff depending on what kind of responses I get. I'll probably mess with it regardless, but just still curious as to what I'm in for running the 50K.

Thanks guys!

 

[jon2]

Are you running 50K on both front and rear and center??Having the same in both F/R should give you equal power to both.

 

[comp75]

50k in the center would be almost true lock. Same power to front and rear. I locked mine(by mistake) in the center and done great for take offs and pavement. Like to slide around alot in the dirt trying to turn.

 

[jon2]

ok I re read it but what weight are you running now though?

 

[olds97_lss]

I don't know what's in the front and rear. Probably whatever came in it from the factory.

I'm contemplating on what to put in the center to help my current problem. I haven't done anything to any diff on this buggy. Bought it, installed engine/electronics, beat it... broke a rim and chewed up a CB.

Now, since it's down (until tomorrow), and since I'm going to have the engine out to replace the CB, I figured I'd ask how it would respond to throwing 50K OFNA oil that I used in my savage rear diff in it.

 

[olds97_lss]

The 50K didn't "lock" the savage diff, but it made it less likely to unload when I get a tire in the air or high center it. I really like how it performs now with the 50K in the rear. (speaking of the savage).

 

[jon2]

well if you do not have any idea in the weight I would redo them. If they are grease, which is my guess your just spinning the crap out of the f/r diffs without any resistance. This MAY be the cause of gears being chewed up. Why did you mess up your CB?

 

[olds97_lss]

No, it's not that. There's something in the diff, you can feel it. Grease doesn't have any feel to it at all IME.

The CB got chewed up because I didn't realize it was a HPI 15T non-hardened CB for the savage. Having it run against a hardened steel spur made short work out of it. Only lasted about a quart. I had the same thing happen back in the t-maxx days when using the RC-Solutions spur against a stock HPI bell. Chewed right through it.

When the tires were spinning, it was both front tires. I'd tend to agree with you if I was having one tire spin like a psycho, but I'm getting good posi action on the front and rear from left to right, just not from front to rear via the center diff.

 

[CorradoPsi]

just for bashing i would run 5k front and rear with 10k in the center. the 50k wont hurt anything, though it will inhibit the nimbleness of the buggy, which is half the fun of it anyway.

 

[vbgagnon]

What Corrado said, 5k or even, 7k 10k center, 50k would be overkill (unless thats all u got) and either grease 1,2 or 3k in the rear.

 

[Plaidfish]

For Bashing I'd go w/ Corrado's Suggestion....for racing (if you go to the track) 5-7-1 or 2 in the back.....that little bastard is quick huh???

 

[olds97_lss]

So noone else has the same problem with the front tires spinning like a sumbich while the rears just kind of ho-hum along?

Yeah, it's fast. Although, I'm replacing the 15T HPI bell that got destroyed with a 13T OFNA bell. It came with a 13T stock. Maybe I'll get a little more low end grunt out of it.

 

[Plaidfish]

Definately will...13 is real good for tight tracks...I launch the triple from adead stop about 15 ft away from the big jump....the triple is about 25ft from peak to landing....I can't make it so good when I have the 14t on and I don't even want to try a 15 on my buggy...seems very high to me.....

 

[olds97_lss]

15 is all I had laying around. Unfortunatly, it wasn't a hardened cb like I thought it was. It was a stock savage bell. The steel spur on the buggy chewed it up in less than a quart.

From 0 to 1/4 throttle, it was a little doggy, but not bad. As soon as it got some momentum, it would take off. The 13T should really prove to be dangerous, especially since I play in a short range skate park. Although, at the refinery, it was nice to have the legs because of the wide open spaces between piles of crap.

 

[Plaidfish]

oh man a skatepark...is it concrete? I might have to come visit...LOL...maybe 7 years ago.......yeah the 13t CB makes mine a freaking rocket out of the hole.....I got some street wheels and man does it reach max RPM quick, like 40-50ft and it's screaming.....I noticed this weekend I wasn't playing w/ my T-maxx anymore so I ran that on sunday and I'm just not liking the real MT thing anymore....it's cluncky and sloppy driving.....buggies are just way too much fun....I think I'm gonna sell my maxxes (not the mutant maxx though) and just get more buggy stuff.....

 

[olds97_lss]

I have my savage and my buggy. Between the two, I make it through a lot of fuel before needing to work on anything. Normally, I get a knot between my shoulder blades from driving them for so long, then I just shut them down or I'm screwed the next day.

 

[Plaidfish]

man I don't know if I should feel lucky or pissed, I never get to drive mine long enough to get knots...LOL...something usually breaks before that happens.....I get knots from wrenching in the pit too much......I guess I should learn more better at not beating the crap out of my stuff....and people wonder why I don't race yet.....It's not racing unless your driving more than wrenching.....

 

[DarthRacer]

I guess my buggy is going to have a lot of posi-traction.
I'm going to see how 7k / 50k / 3k works. It was what I had around.

 

[alkyula]

my xterm buggy is my basher buggy, and i left the diffs with just grease for the longest time. yes under heavy throttle treatment the front tires would just unload, if i hit the gas during a turn the buggy would automatically understeer like no tommorow also. adding 7k in only the center diff did quite a bit in making the buggy less squirrily, (sp? lol) not to mention added forward accelration and helped with on power steering.

now if i wasn't lazy and would add 5k in the front like in my storm it would handle even better.

 

[olds97_lss]

I guess my buggy is going to have a lot of posi-traction.
I'm going to see how 7k / 50k / 3k works. It was what I had around.

Let me know how the 50K works... nevermind, I'm putting 50K in mine tonight and probably 10K-F, 7 or 5K-R. It's what I have.