bill I came out This last Saturday and was like I知 outta my league as the guys we池e going by me like I was standing still. I figured out ST Charles I知 going to figure this Thunderdome out too. I might come Saturday. Sill not sure it痴 worth trying to be competitive if I can not get at least 13-14 sec laps.

if you can get me a vector file my wife can run it on her machine. Let me know she has been doing this for years and is really good at making these files into real stickers for RC.

I’ve been in that spot. I get that feeling. They were faster then my 21.5TC. I got destroyed the first time I raced on road outside of St. Charles on carpet. Don’t focus on the top 2. Jim and Rob are always gonna be faster then most of the rest. I’m supposed to get help with one of mine Saturday. I’m sure he’d try yours also.

I struggle with on road gearing still. Never as simple as so many make it out to be.

so true!

I had the same issue. Picked up a new car that had the Spec motor in it. I geared it at 3.8 to be safe. We race on parking lot asphalt. 80-90' straight. It was dog slow. Couldn't get out of the way fast enough down the back straight! couldn't gear it high enough with the selection I had at the time. Later found out 2.8-3.0 would've been in the ballpark. Of course gauging the temp is critical.
Our USGT class doesn't require the Spec motor, so back in the tube it went...

Is open 21.5t motor mainly a SoCal thing or do other clubs run it that way also? There are four clubs / tracks that run it this way.

Never been to a big race running the spec motor. Even the 1 up race used a FT 17.5 (spec). It's a damn motor war everywhere we go down here.

I think that痴 largely regional dependent.

I致e never been to a big race that didn稚 require it..

Running anything at Steel City is maybe a special case though due to the size difference in the track. About 5 seconds longer than the parking lot stuff we are doing. Even TC was 13.5 rather than 17.5.

Steel City is a huge track. They went with different spec motors to make the class somewhat interesting. The USGT spec motor on that track would be pretty boring.

There will be a big race with the spec USGT motor in this weekend's Arizona State Championships in Mesa Az at PF Hobbies, we have been running the spec motor since it was released and made into the rules. We have 46 paid sign ups for USGT alone, the biggest USGT field that I've heard of, with over 190 paid entries overall...a bigger field than the 1Up Cup. Should be live on Live RC starting Friday.

I ran my spec motor on Steel City at the Thursday Practice, didn't have the gearing figured out at that time. Having played a lot with gearing lately I think the spec motor would work there, just not as fast as the 17.5 static timing motors they used, maybe off by a second. Looking forward to testing my theory out in September. ;-)

Nice

Yes, depending on track size and surface, 3.2-3.3 is a good starting point. That 3.8 he had is gonna be SLOOOOWWWW....

I'm curious what kind of run times are you guys getting out of the Gravity RC USGT tires? How long are they lasting you guys?