Hey guys i was at my first indoor meeting with my 12th scale this season and the car handled great for the first 4-5 minutes of the race then the rear end seemed to become undone when i turned into the corners. I am using purple front and grey rear tires and i tryed applying additive longer before the race but this didnt seem to help much. My base start for additive was apply for 15 minutes then wipe of and leave for 5 minutes then race. I then upped this during the day and ended up with apply for 30 minutes wipe and leave for 5 and it gave the same result. I was using jack the griper and applying full rear and half inside front on the additive. I was using an ftx fantom car with kit setup and a speed 12 bodyshell. I have a feeling it may be because the car has an frp chassis and has quite a lot of flew that it is overworking the tires to much, but perhaps you can see a flaw in my tire regime? Thanks

John_S,

I had exactly the same problem with Jack. It goes off around 6 mins. I changed to CS-Grip from Schumacher and the problem was solved!

this question is probably already answered somewhere else, but nowadays, which are the preferred servos for 1/12? I know there are 2 futabas (9602 and 9650) and one Ko (949?), are there others? jr, airtronics? which one is the preferred one around?

thanks a lot,
al

thanks trace raing. I had some cs on order but theres a postal strike in the uk so i had to borrow some jack from a freind. I will be usin cs at the next meeting

John_S - It might have more to do with the pruple fronts. They get grippy (sticky) the more heat they get into them causing the car to get loose. you could try a different tire sauce but I'd dump the purples and try dbl pinks/ pink.

E

A little list of servo for 1/12
KO 2123
KO 917
KO 949
Sanwa 141HR - Aitronics 94141Z
Sanwa 145HR - Aitronics 94145Z
Hitec 225 MG
HS 81 MG
Futaba 9602
Futaba 9650
JR JRPSZ3550

Some come from the AE RC12L4 manual

Eric, this sounds OK on Paragon, but on Jack it isn't the same. The answer is to switch to CS High, and to use dbl pink/magenta when you feel all the grip go to the back of the car. Starting with dbl pink before the black line has been laid down gives waaaay too much steering! HTH

thanks a lot!

one last question... does someone use srandard low profile servos like the s9550 or the pds2413ics?

thanks again,
cheers,
al

Pink and grey is kind of the combo of choice in scotland and because there is only 1 mayb 2 heats of twelth scale at this event the grip never really gets to be mega as the 12th scale are the only class alloud to use additive. This was the compound that one of the corraly team drivers in attendance was using and his car didnt have a lack of anything at any time ever

on my local track (and with paragon) the greys tend to feel great at the beginning of a run but they go abruptly loose about 6 minutes into the run. the looseness gets so bad that the car can get nearly undriveable. on our carpet (crc glued to concrete), switching from grey rears to pink rears fixes that late run looseness problem. The pinks work good here with either purple fronts or magentas depending on how agressive you want the steering.

John_S-
The ticket may be to not use the grey rears. I personally don't run those anymore it always (at my track) seemed that if I got out of the groove it'd take almost a lap to get the tires cleaned up and have traction again. When I switched to dbl pinks at all 4 corners or dbl pink front and pink rears even the car remained consistent and if I got off line I didn't struggle for almost a lap.
E

Anyone have any experience with the Parma Pro 38s?
Grey or Magenta rears? and purple orMagenta fronts?

All the tracks in my area are limited to Jack the Gripper. From what is being said, it sounds like the 2xPink Front and Pink Rear will allow the car to remain consistant the whole run versus Purple Front and Gray Rear. Besides this difference, how different will a car run when changing to this tire combo assuming everything else is the same? I'm mainly referring to the first few minutes when a Purple / Gray combo is working properly.

Thanks,

Tom, are you going to be in attendance tues. or this saturday?
I heard Big Dads had a good turnout of 12ths........

All those boxes of foam need track time!

Mark

Pro 38's are great tires. I was running Magenta/Magenta on the local track but once the bite came up a little Grey rears were .2 faster. I ran Grey rears and Purple fronts at the IIC while some of my team guys ran Grey rears with Magenta fronts. I have had no trouble with losing traction late in the race.

The problem with Purples getting gummy and causing late race oversteer comes when the car doesn't rotate well enough and the front tires are scrubbing the track too much which heats them up