[binfordw]

I just purchased a handheld tachometer. I did a gear swap on my X3 to increase the spindle speed, which was supposed to be a 6k final speed. In low gear, my spindle tops out a little over 4k, and in high it hits right at 8k.

This seems too high to me, is it unsafe?- hard on the spindle?

I thought my spindle lacked low end grunt, and now I see why. I think I might re-gear to hit the 6k ish mark, but am curious if 8k is actually bad on the spindle.


Thanks,

Ben W

[gd.marsh]

I'm not an X2 expert although I have owned one.
Stock bearings probably not rated for more than 5500 rpm.
Wouldn't be pretty if one seized or blew apart at 8K ..

[SCzEngrgGroup]

You'll for sure want to make sure the gears and bearings are properly greased, and not over-greased. Then, just run it for a while, and see how hot it gets. High speed will generate a lot of heat if the bearings/gears are not properly setup. If it's not running hot, it's fine. But I'd be amazed if that was the case...

Regards,
Ray L.

[Teyber12]

i ran my x3 at 4k rpm for about a year and cooked the bearings. It was NOT worth the massive headache imo