The best answer is go to the tracks and see what the guys there are running. But if you want some general guesses it would help to know what class your running.

Well for the tarmac there is no 1/12 class right now I'm just running for fun:)
at the carpet track is going to open soon but most likely i'll be racing 13.5 class with 1 cell lipo.

Sounds like you are going to WestCoast and TQ, correct? There are people there that are willing to help, myself included. Sean has all the goodies(tires, gearing, etc...) in stock or will have by the time he is open. What car are you running?

Hi guys, does any know, or can anyone tell me who makes the motor shaft extender? I run a Corally car that uses long boss pinions but can't get big enough long boss pinions to get the correct gearing. I have loads of big 'standard' boss pinions so I thought the extender thing would be the way to go. any help is appreciated! Cheers.

Niftech

http://www.niftech.com/catalog.php?mode=4000

You have to trim the motor shaft a bit to get everything to line up correctly, but it works for using standard pinions with the Corally car.

at WCRC, Eric P and Tony N have been using synthetic rears (grey) and firm fronts (black, purple and sometimes lilac)
at first we had a race going tuesday nights which has shifted to saturday.

At WCRC, i have had difficulty finding a setup to work with natural rubber. black/grey has been the easiest to get working. i haven't given up on getting a 2xpink or magenta rear to work, but the traction becomes unpredictable with the grippier rubber and firm suspension.

for stock carpet, lilac/yellow or lilac/grey could be a common choice, but at OCRC i had to run black fronts fully sauced. i am hopeful that TQ won't have that situation

This may be an option, I run them on a 12R5 though, don't know if they are long enough for the Corally.
http://www.titaniumracing.com/menu.asp?menu_id=38
http://www.titaniumracing.com/images...onTEMPLATE.jpg

Those look great but I don't think they will work on a Corally. The set screw is too close to the teeth.

I'm going to be ordering an assortment of tires this weekend to try and get grip without a treatment...I'm thinking orange and pink rears and purple and dbl pink or lilac fronts to see if I can get something reasonable to work.

In the mean time I went to 301's web site and could not find an e-mail address to contact them with. Do you know of one I can use to get more information on how they used this additive? Looks like from the size of their track using only 2 quarts compared to our track which is less than half the size, we could probably get by with only 1 quart and still mix it stronger.

Keeping my fingers crossed that I'll be able to talk the track owner into letting us use this.

Outdoors on asphalt we always run double pink front and rear in Mod and 17.5. This is on parking lot type tracks blown clean with a leaf blower and very lightly sprayed with sugar water (just to keep any leftover dust down).

For traction compound most of us run Paragon on the full rear and inner 1/2 of the front for 5 min with a layer of cheap runny suntan lotion over the same areas for another 15 min or so. If you run straight traction compound the tires will pick up dust and you car will start spinning out after a couple minutes. The sun tan lotion reduces the stickiness of the tires and make the traction last a full 8min or longer. Everyone does this outdoors.

Double pinks don't work on this track I have tried. It isn't a parking lot track it is a purpose built track that is outdoors. Unfortunately they have a lot of bugs in the area so we can't spray down sugar water. One of our racers tried pink rear dbl pink front and couldn't get enough traction either. However he really didn't try any setup changes from what we used to run at my parking lot track which was sprayed with sugar water. I still don't think pinks are going to give enough rear grip.

Well, then that's a problem. Pinks are about as grippy as it gets. Maybe try whites with sun tan lotion but they will wear faster.

It might be better to stick with a pink rear and go harder on the fronts until you find the balance. Maybe purples.

I am in FL so we have bugs too. However, the track surface is usually so hot bugs wont get on it.

If you can't use sugar water I hate to say you might want to try VHT. I don't like VHT because once you use it you are trapped into having to keep using it. It is very sticky and basically glues dirt and dust to the track between race days...so you have to put more on all the time and pressure wash the track once in a while.

If pink rears wont work you are in serious trouble. Trinity used to sell a platinum dot natural rubber foam that was softer than pink dot but it really just wore faster and didn't give more traction on asphalt.

Yeah I really don't want to go to whites due to the wear. VHT is just too expensive to be an alternative...been through all this many pages back. If the info I got back then on the Molzer stuff is accurate then that may work out for us. I was thinking yellows were softer than pink but now that I look at shore chart I see that it is not. Rubber tire TCs have enough traction on the track but just can't seem to get foamies to work at all. Just barely touching the throttle gets it all loose in the back. There is already ant holes under the track so the owner really wants to avoid sugar water. Personally I've never had an issue with sugar water attracting bugs...probably for the reason you state, the surface is too hot.

Hi Adrian, could you reccomend an approach for an indoor asphalt track (WCRC in california). the bite is very high(grip like carpet but cold, hard and abrasive), the asphalt mix used has no visible rock, just tar and very smooth. they occasionally treat the track in spots with WD-40.

FYI, using black/grey with JTG works ok, but i am struggling to get a natural rubber tire choice to work for better wear characteristics. i thought i was close with purple/magenta and 24 front spring (bmi) and short thick gr/ep flexbars and copper center spring. but it is still touchy. could suntan lotion make the front more predictable?