timing?

I left mine how it came from eXpress... right at 50. I haven't really played much with motor settings as I just got it Sunday to race in that class. I did start with a 3.69 final, but the car was still accelerating at the end of the straight. Maybe next weekend I'll try a 3.87 final just to see how my lap times look. Or, I may try 55 on the timing. Anyways, I would say starting point for me to be 3.78 (not 3.79 sorry) with 50 on the timing. Then go from there.

We are getting 3 to 4 days out of a set on very abrasive, low traction asphalt. Unlike most TC-type slicks, the lap times don't fall off appreciably as the tires wear.

John: I run my d4 ss in usgt at 3.78 52 timing at Speedworld

Thanks Jay! Perfect. Fan?

using the trinity part that replaces the center section with a fan mount, then the 30mm WTF fan, 140F every run

http://www.trinityrc.net/shop/index....product_id=667

That is one slick optional part! Almost wants me to pick up a D4. But in the meantime, I ordered this fan mount from Yeah Racing:

You guys probably have checked this site, but Integy has a lot of different fan setups. Just go to the Integy site and do a search of motor fan.

yep that fan D4 mount is the best!

for other motors I prefer the orca fan mount, it has a screw that forces it tight on the motor can

http://www.tqrcracing.com/shop/produ....asp?p_id=8664

Has anyone else had a problem with the spec tire inserts gong to poop after just a few runs. I have two tires that are useless just after getting to the point of being really broken in. One tire the foam is gone; turned to powder, the other it separated and bunched up on one side.

what does a few runs mean in your book?

I have not seen this happen in a few runs...less than 10 runs.

I have seen the insert break down on the front tires that I have had for many race days...about 4 to 5 weekends/days of racing...so I would think over 50-60 runs with practice added in.

I have yet to see the insert break or separate and bunch up....not that it couldn't happen I just have not seen it.

Are you doing anything with your tires like soaking them in a bag with traction compound or hitting them with any harsh chemicals?

I only use LGC and SXT for my traction compounds....what are you using?

By a few runs, I mean 2 race days, maybe 10-12 packs on them total. They aren't even fully broken in. The center mold is still there. I use sxt 3.0, and liberally coat them before storing in a zip lock bag. I also have been using tire warmers to get heat cycles through the tires to help decrease break in time. USGT tires are inexpensive, so I'm not worried about that, I just hate having to break in a new set already.

It's proably the SXT in the ziplock, I had insert issues when I tried ziplocking mounted tires with sauce

What I do now is before I mount the I put just the tires with sauce on all surfaces in zip lock for a few days, then I clean inside and mounting with simple green then mount, then grind the mold seam off then run

I race with Bronson. I've had the same issues with the USGT tires, but ONLY ON THE FRONT. After a few race weekends, the front inserts collapsed, bunched up on one half of the tire, and one broke. On each of the failed tires, I cut them open to see exactly what happened. The foam was compressed/collapsed.

I don't soak my tires, simply use SXT3.0 treatment to clean and sauce the tires at the track.

It does not happen to the rears, I suspect the fronts deteriorate because if the extra load put on them by steering.

Now, I just keep an eye on them by squeezing them and feeling the inserts condition compared to the rears. When the fronts start to feel "hollow" or extra soft, I just replace them.

Mark

Are you racing on carpet or asphalt?

I really think that you soaking them and putting them into a ziploc bag might be the cause of some of the premature end of life with the insert.

For carpet this is how I prep my tires...
I use a muchmore tire sanding tool and use a file to take down the center seam. I then use a green scotch-brite pad and scuff the tire and take all the "shine" off the tire.
After that I just run them in and will use buggy grip on the tire before I sauce them the first 3 times. I will let the compound soak for 20-30 minutes for the first 3 runs and by the 4th or 5th run the tires are fine.
Also one thing I have been doing is I will do a burn out with the tires before I race and after I race. I think that the burn out after the race helps clean the tire for the next race.

I know these tires are "cheap" in the grand scheme of things but really you should be able to get 50-60 runs if not more out if a set on carpet. I also rotate them left to right every 3 runs aswell. Once the tires show the signs of the insert breaking down or the tire being too worn on the inside of the fronts, I throw them in a box and use them outside in the summer time. I usually end up with about 5 or so pairs of tires to use outside after a full indoor season up here in the midwest.