Cain

iTrader: (294)

I know that the ball diff from what people are saying is ideal, but my question is for those who run on old school dirt tracks with 2wd vehicles and use a gear diff, what oil weights are you using?

By old school dirt, I mean tracks where something like a proline caliber, joncepts goosebump, or even an old school step pin would be the hot tire.

Gigasipke

iTrader: (4)

3000wt give or take. This was on loose to mid-grip with Short Course 2wd.

fredswain

iTrader: (1)

The general rule with a ball diff was as loose as possible without slipping. Obviously a gear diff can't slip do basically as light of an oil as possible without diffing out anywhere or just incessantly spinning one wheel from a stop.

Cain

iTrader: (294)

got a link to a vid of the track to see conditions?

carpetburner

iTrader: (8)

Some are using 20k .The d216 apparently comes with 100k . The actual volume of oil the diff holds plays a role too .

kwiksi

iTrader: (125)

D216 comes with 1000wt.

tc5 man

Il say this ive seen the D816 last weekend on a clay/soil mix track and with the gear diff I'm assuming the guy was using 1000w oil.

And it was hooked up fine .

Cain

iTrader: (294)

good stuff thanks for the info. I am looking to pick up some more PT Racing oils and I am assuming that there isn't anything "special" about oils that are stated to be shock oils versus diff oils other than the cst value, so some if in some weird world I wanted to try say 700CSt ( I am just throwing that out there), then I can give that a go using the shock oil.

Cain

iTrader: (294)

anybody?

Socket

iTrader: (61)

The biggest issue with gear diffs to me is the consistency versus a well built and broke in ball diff.

A ball diff doesn't change unless you change it; it's only as good as it's operator. A gear diff over time will change and degrade.

Mustrum

Shock and diff oils are oils, nothing less, nothing more, so you can try anything, however you should also try to remove 2 gears .

That's the next stage I'm going to test and compete on an old school outdoor track at the end of april, I use MR33 1000 cts in my D216 on low to medium grip outdoor carpet track, on dirt track I'm going to remove 2 gears.

Some drivers are doing so for instance on the DEX 210F.

Obviously I wish a ball diff was available but it's not , maybe in 1 month or 2 ...or 6, so I think removing gears is worth the penny.

Mustrum

Well, even with the best grease a ball diff need some maintenance around 2/3 hours of practice...

Cain

iTrader: (294)

cool thanks for the info. How long would you say should you wait between rebuilds on a gear diff? The dex210F is very quick for diff changes so no worries about length of time to take it out so curious.

Thanks for the info on the 2 gear removal. I read that before and will give that some consideration. What have you seen is the weight difference you go with for oil when running 2 gear versus 4 gear to get same feel? (example: 2 gear I went 5K, same feel on 4 gear was 3K, etc)

tc5 man

I though about using two spider gears in a gear diff on a 2wd wouldn't you have to go up on the diff oil weight ? How do they hold up also ?

I run my indoors on med traction .

Cain

iTrader: (294)

I think for 17.5 they should be fine from what I recall someone else saying. I just forget what the "conversion" difference was between 2 gear versus 4 for similar feel. As I am going to try the dex210F on old school dirt, looking to see what options are out there.

Now, for stuff with a bit more pep, I heard that its benefical to go to steel gears which I have.