welding them migth be fine in the ofroad setting, but your also not dealing with the as much stress as you are when you launch a 3500 lb car out of lights at the track
hardened materials like spider gears should NEVER EVER be welded for racing situations
ever seen a spider gear shatter under extreme stress, exit thru the back of a ford 9 inch housing, and implant itself into the pavement ?
thats enough force for the fragment to have shattered a leg bone if it had come out parallel with the gound. race track officials dont go to work willing to be shot by your car just because you decided to save $200
NOW i think its time to lock this thread. sorry cougar, but i think you know who you can PM if you need more information. either that or strat a new thread with specific questions so that the welding idea id specificly excluded from being a posible response
something like "ive narrowed it down to XXX brand mini spool and XXX spool, and was curious blah blah balh"