shifting gears

[yz120]

during our second run today my sv acted like it shifted gears and slowed down to around half its normal speed, this was on the secound lap.
tried fresh packs and it still runs slow.
pulled prop shaft and re greased it and nothing.
i think maybe i have a problem w/the motor.
anyone have any ideas?
now my son will deffinatly wax me-help:(

[SJFE]

No binding in the drivline? If not you most likley are looking @ a motor or esc problem. What where the temps like after the run?

[yz120]

no binding at all.
forgot my temp gauge but did find the motor and batts to be hotter than normal.

[Fluid]

Did you find a wad of weeds on the prop? If not then the motor may be the problem. There have been a few reports of bad motors, but they are rare. My luck is - if one of 500 is bad that's the one I'm gonna get! :(


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[yz120]

no weeds.
installed the combo out of the bj26 and it hauled a**.:D
now i should check ea. individually but afraid to damage one or the other.:(