NOVA RUNNING BACKWARDS

grubby · 10-18-2009, 07:45 PM

I GOT AN OFNA LATEMODEL WITH A NOVA BF21 ON IT AND EVERY TIME I GO AND TRY TO START THE THING IT WANTS TO RUN BACKWARDS AND WE HAVE TRIED ALL KINDS OF THINGS AND IT STILL DOES IT. IF ANYONE CAN HELP ME JUST LET ME KNOW :

Jack Smash · 10-18-2009, 10:13 PM

Not quite sure how you get an engine to run backwards as your starting method (box, pullstart, rotostart) would automatically get it going in the proper direction. It would have to start and then stop and go the opposite way. Are you sure it is spinning the correct direction when you try to start it, and if it is are you sure your diffs arent in backwards?

wingracer · 10-18-2009, 10:38 PM

Sounds like backward diffs.

grubby · 10-19-2009, 03:22 AM

everything is setup right, ive checked a lot of things but it will start up and the tires will be running backwards and then see will die or i willl shut it of and try again and it will keep doing it over and over and over and it will start going in the right direction when it takes a notion to, it got everybody at the track bumfuzzled

Twisted_Metal · 10-19-2009, 08:11 PM

It's very possible. I had a XTM .15 engine do this some years back. I don't know exactly how or why it happened but it was rather interesting and it had nothing to do with how the car itself was setup.

grubby · 10-19-2009, 08:26 PM

IVE CHANGED THE FLYWHEEL, CLUTCH SHOES AND SPRINGS AND CLUTCH BELL AND BEARINGS AND IT STILL DOES IT.

pyromania · 10-19-2009, 09:48 PM

its your starter box. You either have it wired backwards or plugged in backwards

grubby · 10-20-2009, 05:16 AM

THOUGHT THAT TO AND ITS NOT, I EVEN START A BUGGY THAT A I RACE AND IT STARS UP FINE EVERY TIME

bgbelden · 10-20-2009, 07:42 AM

I would check your diff's. It's happened to me.

grubby · 10-20-2009, 03:12 PM

CHECKED THAT AND ITS NOT BESIDES AFTER IT FINALY TAKES A NOTION TO IT WILL START GOING FOWARD AND RUN GREAT

NITROMONTREAL · 10-22-2009, 07:58 AM

Your engine is kicking-back and starting backwards, this happens when your
engine is to rich and/or when you are spinning it to start and does not fire, which it then builds up with unburnt fuel. The piston goes up and since there is
to much fuel, it can not compress completely and fires then shoots the piston
back down. It will run but badly then stall or it might even change to the right
direction.