robertaccio
Husqvarna
Pro Class
2 different races 2 fails.
1) At the start as the flag was dropping, my clutch plain bearing seized leaving my clutch fully engaged, DNF, Husky fixed at no charge thank you Husky.
2) Big fail in a recent race no DNF but ran bike with with what I figure was no oil pump for quite a while.
Hot bike = annoying e start no work(prior to starter bulletin instalation)- kick started and got a couple big kick backs with associated gear crunching noise. Continued race and heard rattling and strange noise but thought it was my imagination and was only a stick or something in my chain or chain guide. It wasnt.
cleaning up bike post race and final job was to check valves and change oil, pulled drain plug and metal gear bits were all over my mag plug.
Started opening motor to find bits contained low in the oil pan area. decided to disassemble the entire motor to be sure of no FOD condition.
@99% of gear bits were in the bottom pan area with a couple bits carried up with cam chain up top. intake cam bearing surface has some slight galling that can be cleaned with some crocus cloth, exhaust cam surfaces look good. found crankshaft end mounted oil pump drive grear and its matching idler gear completely stripped of their gear teeth. Pump feels good and pump drive gear is good (we will dissasemble the pump to inspect), Piston looks good, cylinder is going up to millenium tech for a replate its scuffed with one long groove (I guess one tiny piece of gear got up in there) hacked. all bearings look good, gearbox looks good. Will pull the valves and verify them and fully decarbon everything. Had the ECU reflashed with the open race map and have a full FMF system on the way for the reassembly of my new motor. Will most likely do suspension while shes in for rebuild. all else is good, except all my KTM crew and now Beta crew asking me why I stick with Husky and all these failures..........
incident cause hypothesis, ignition advance kick back caused very rapid reversal of the crankshaft and the quick blast back had the oil pump hydro locked and a tooth or so cracked on the drive gears. They were being rolled in normal motor direction from me kicking then it slammed back the opposite direction from ignition advance kick back. Once the engine was running normally they unmeshed on the no tooth/broken tooth spots and continued to gnaw all the teeth off of both mating gears as the race continued. Also note the gears for the oil pump on these X-lites are Xlite thin little light weight gears.
It could have been much worse. but it aint too good as it is. its only June and my 2013 bike motor is fully torn apart on the work bench and will undergo a millenium tech cylinder replate. Also happily for me I have a great support crew to assist in labor, parts and services costs and efforts. That was my where my little hidden hints of a rant were in other threads.
3) as stated in the starter thread we also found the ignition flywheel sprag clutch bearing surface to be unsat and cause for rejection.
Other than all that I love this bike.......and shoot an oil pump fail and no DNF? thats almost unheard of (gotta look at the bright side). And it is only a machine, machines break under the best of circumstances.
1) At the start as the flag was dropping, my clutch plain bearing seized leaving my clutch fully engaged, DNF, Husky fixed at no charge thank you Husky.
2) Big fail in a recent race no DNF but ran bike with with what I figure was no oil pump for quite a while.
Hot bike = annoying e start no work(prior to starter bulletin instalation)- kick started and got a couple big kick backs with associated gear crunching noise. Continued race and heard rattling and strange noise but thought it was my imagination and was only a stick or something in my chain or chain guide. It wasnt.
cleaning up bike post race and final job was to check valves and change oil, pulled drain plug and metal gear bits were all over my mag plug.
Started opening motor to find bits contained low in the oil pan area. decided to disassemble the entire motor to be sure of no FOD condition.
@99% of gear bits were in the bottom pan area with a couple bits carried up with cam chain up top. intake cam bearing surface has some slight galling that can be cleaned with some crocus cloth, exhaust cam surfaces look good. found crankshaft end mounted oil pump drive grear and its matching idler gear completely stripped of their gear teeth. Pump feels good and pump drive gear is good (we will dissasemble the pump to inspect), Piston looks good, cylinder is going up to millenium tech for a replate its scuffed with one long groove (I guess one tiny piece of gear got up in there) hacked. all bearings look good, gearbox looks good. Will pull the valves and verify them and fully decarbon everything. Had the ECU reflashed with the open race map and have a full FMF system on the way for the reassembly of my new motor. Will most likely do suspension while shes in for rebuild. all else is good, except all my KTM crew and now Beta crew asking me why I stick with Husky and all these failures..........
incident cause hypothesis, ignition advance kick back caused very rapid reversal of the crankshaft and the quick blast back had the oil pump hydro locked and a tooth or so cracked on the drive gears. They were being rolled in normal motor direction from me kicking then it slammed back the opposite direction from ignition advance kick back. Once the engine was running normally they unmeshed on the no tooth/broken tooth spots and continued to gnaw all the teeth off of both mating gears as the race continued. Also note the gears for the oil pump on these X-lites are Xlite thin little light weight gears.
It could have been much worse. but it aint too good as it is. its only June and my 2013 bike motor is fully torn apart on the work bench and will undergo a millenium tech cylinder replate. Also happily for me I have a great support crew to assist in labor, parts and services costs and efforts. That was my where my little hidden hints of a rant were in other threads.
3) as stated in the starter thread we also found the ignition flywheel sprag clutch bearing surface to be unsat and cause for rejection.
Other than all that I love this bike.......and shoot an oil pump fail and no DNF? thats almost unheard of (gotta look at the bright side). And it is only a machine, machines break under the best of circumstances.
