Originally posted by RC
Can anyone comment on their experience for the rear diff when using a front one-way?
In particular has anyone tried or can describe the properties of:
- Kyosho TCD Gear Set
*The Japanese Kyosho site says this is actualy a limited slip differential.
- Kyosho Active Diff Set
*Supposed to be adjustable with a set screw.
The options I have tried are:
1. Stock diff - tuned w/various weight oil
*Pain in the butt to change the fluid
2. Solid rear
*Fast but twitchy
3. Kawahara "Negative" Diff.
*Nice idea but not effective enough, by the time the inside wheel spins enough to engage the shoes, someone just passed you. And although you can further adjust with oil, you're now back to tear down and change fluids.
I've got the TCD diff but haven't used it in competition so no comment.
The solid axle
is fast out of the corner but is very tricky into the corner and makes for a driving style that is very hard on tires. Also solid axle , front one-way makes it harder to get around traffic on smaller tracks unless you're very good because you're not really carrying that much more speed mid-corner. On a sweeping track without many fast hairpins this is definitely the ticket. Actually for an extremely skilled driver with super smooth inputs I'd say this is the ticket for any track based what all I've tried so far - it's fast.
Front one-way with 7000 rear diff
is very, very consistent, with awesome corner speed all around - no drama on fast entry into tight corners. I run this with 2.5 to 3mm tire split in v1r with 27 tooth pulley and that car handles beautifully on all types of tracks. I don't think i've rebuilt that diff but once in 8 months. I don't see many people running it set this way but given the way the car handles I really don't want them too anyway
I've stayed away from because of the weight of the setup - don't want to be adding that much rotating mass - would probably negate whatever speed benefits you would get and I don't think it's giving any handling advantage over choosing diff or solid.
One thing that I would like to try is solid rear coupled with solid front. The yokomo guys have hit on a good setup with it and I'm curious how it would work in a v1r(r).
hope this helps - my .02.