If I'm being a nuisance, I apologise...

but here goes...
How are the classes divided..?
How many cells (lipo..) are normal/used..? I've seen some 1/8th with 2 trays..!
Are there servos scaled up for 1/8th (from 1/10th)
I guess nitro and leccy don't run in the same heat/final..?
How many amps is usual for a 1/8th speedo..?
thanks fellas...