All car got different problem. No one is prefect. Even the same car, everyone got different problem too. Anyway!!

v-one series all got strong support for front bumper. Just can't belive the latest R4 design does not have anything attach to upper front bumper and make it so easy to break. Kyosho shouldn't make such simple mistake. I know the bumper plastic parts only cost $8. But that's not the way to solve it by keep replacing it. Just try to seeking any better solution from other R4 driver.

There is an option part VZW411 that connects the top of the bumper to the front end just like the RRR did. Kyosho designed the R4 bumper the way they did because they wanted front end flex.

VZW411 CARBON FRONT BUMPER PLATE V-ONE R4

Let me correct what I said before. I don't think the VZW411 connects to the front bulkhead like the RRR did. It does move the body mount back and give holes to mount the transponder. Here is a pic from the European Championship.

Highside20, thank you for the information.

Just ordered VZW411 ($26 ) and waiting for delivery. Will post photo once I put it on.

[QUOTE=Highside20;11105470]Let me correct what I said before. I don't think the VZW411 connects to the front bulkhead like the RRR did. It does move the body mount back and give holes to mount the transponder. Here is a pic from the European Championship.

Ok I just got the VZW411 part and it does mount to the front bulkhead but at a much lower position than the RRR.

Good News!!! after a few races with rear diff problems I have tried the steel diff gears....just perfect!!!...
1st Place Again!!!, Lap Record, Track Record and TQ!!!... the hole pack to V-one R4 /Team Orion Alpha ABI!!!...
Yeah Yeah!!!

http://www.minituerkasrc.cl/wp/?p=680

some photos of your car?

[QUOTE=kevniau;11111677]Highside20, thank you for the information.

Just ordered VZW411 ($26 ) and waiting for delivery. Will post photo once I put it on.

Nice! Tell me how you like it and how well it holds up. Also, if it gives you any more front end feel.

highside? i see that you have a r4 sp. can you weight the 1st and 2nd spur mounts that lightweight?

Are you referring to VZW416 and VZW422? I got 6.5g for the 1st gear holder and 6.2g for the 2nd gear holder.

yes!thank you!how about the main shaft?there is any combany with a light one?

Here is the main and middle shaft weights for the SP

i can see a good amount of weight save from the rear ale.also,i notice that the r4 in the photo above from the Europe champ is using the rrr style pulleys.is a lot lighter.

I agree, I'm not sure why kyosho went with the Evolva style pulleys. I think the old style RRR pulleys are way lighter.