The thing is, the gears letting go in the manner describes tells me that the damage might have been done already and was really waiting to fail.
It may have just been a hopped kerb, even simply dropping a wheel into the dirt briefly, turn 4 at E.C eh?
Mebbe he was over to the far track left and the car hopped on the bump over the overpass!! Who knows, but you only need one weakened tooth...it will wait...... that box could have been carrying that dodgey tooth for a long time......and then clink, the tooth lets go but instead of dropping (relatively harmlessly) in the bottom of the box it may have just displaced enough to clash with the teeth on the following rotation, crunch, the tooth fold in and the resulting broken teeth simply lunch themselves.
Christ it happens quickly.
I did the exact same thing with one of my 125cc superkart engines some years ago. it wasnt on a gearchange where youd expect it, it was well out of corner exit just before shifting up to 4th, no clunks, no ticking or telltale crunches , nothing, suddenly the engine revs freely and thats all she wrote.
The gears either side of 3rd work fine.
Once the gearbox came apart, the entire teeth set was stripped off both gears and laying in the bottom of the cases!
Damaged teeth can sit there harmlessly for a long time before they decide to ruin your day!
L8tr
E
tassupervee That really hurts doesnt it!
1,171 posts · joined Sep 2003 ·
Im not a complete idiot, quite a few parts are missing....
