Hi Bob,
Can't give you a definitive setup yet but I'd definitely suggest mini pins are way too much for the front end. I'd start out with Mini Spikes all round and trim the outer rows (2 max) from the front tyres. I know a few SCT guys prefer the harder blue compound Schumacher tyre on the front to help take some of the bite away but I've always run the same compound on both axles. I've always found mini pins to be very edgy on carpet with the old car whereas mini spikes are alot more forgiving - although ultimately a little slower on a single lap of course.
We ran the kit setup on astro for the Horizon UK promo vid with Schuey Yellow mini spikes and it didn't feel too bad to be honest - but it was easy to get it up onto 2 wheels.
The stock SCT runs a lot of caster on the front which may be worth dialling out and going with the buggy 25 deg kick wedge and 5 deg blocks. If the Buggy is anything to go by, I tend to run more caster when the grip disappears so on a high bite surface like carpet, I'd be looking at reducing it from 30/10 to maybe 30/0 or 25/5 or even 25/0. I believe this is what many of the US guys are doing - albeit with the rear motor version. To compensate for the sharper initial response you'll get from this, it might be worth laying the front shocks over a bit - or making up a roll bar?
As we go indoors and into the winter season over here, hopefully we'll get more chances to run on carpet and I'm sure everyone will be chipping in with ideas and set ups.
I'm planning on going to the HRC rear block with probably 3.5 deg Toe with 2 deg anti squat and trying less Caster up front. I'll probably use my roll centres from the Buggy (2mm inner and outer at the rear in 1/E) as a starting point but change the shocks to compensate for the body weight and roll.
Don't forget that the SCT front camber block is already 2mm higher (thicker) than the buggy) variant.
Sorry that I don't have a definitive just yet but didn't want you to think you were being ignored. There's a few guys running them more actively than I can over here and I'm sure they'll chime in with their findings soon enough.
Cheers
Andy.
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