bad vibes, man

[alex_in_az]

does anyone else have a lot of parts failing due to excess engine vibration? So far in about 5k road miles, I've had the front half of the front fender crack off, the headlight mounts break, the exhaust mounts (twice), the tail light crack off just above the mounts and I'm about to lose the passenger foot peg mount on the right side.
the engines are supposed to have a balancer shaft in them, is it possible for it to have been badly timed from new? Bike is a Panterra with a CG125 engine.

P.S. not meant to be a bitchfest, I really enjoy riding it

[Weldangrind]

I can't recall if you've shown us your engine. If you throw up a pic, we can confirm the presence of a counter balancer.

Loctite is your friend.

[Killerbracing]

x2 on the loc-tite. Might not hurt to re torque the bolts on a regular basis.

[humanbeing]

Originally Posted by Weldangrind

...throw up a pic, we can confirm the presence of a counter balancer...

http://www.purplewave.com/cgi-bin/mn...?081216/2543/1

100% like the good old CG.

[alex_in_az]

Originally Posted by humanbeing

http://www.purplewave.com/cgi-bin/mn...?081216/2543/1

100% like the good old CG.

yup, that's it alright, except the swinging arm is painted red instead of black

Originally Posted by Killerbracing

x2 on the loc-tite. Might not hurt to re torque the bolts on a regular basis.

it's not bolts vibrating loose, it's parts cracking due to vibration, here's the passenger footpeg mount

[Weldangrind]

There is no counter-balance device in that engine.

[Weldangrind]

I've had some similar trouble on China quads. My solution was to isolate vibration wherever I could, usually with rubber plumbing washers. They're cheap and effective.

[alex_in_az]

how can you identify a balancer equiped engine?

[Weldangrind]

There is a protrusion in the bottom end that is at the front of the engine. There is typically a finned cover as well, although not always. It makes you think of a front mounted starter in appearance.

[Ranbo]

I have had this problem recently. I was able to solve it. I had the lower motor mount bolt work it's way loose. I replaced the bolt and nut with a grade 8 bolt and tightened all engine mount bolts. The motor mount bolts on china bikes really suck.

[culcune]

Originally Posted by alex_in_az

does anyone else have a lot of parts failing due to excess engine vibration? So far in about 5k road miles, I've had the front half of the front fender crack off, the headlight mounts break, the exhaust mounts (twice), the tail light crack off just above the mounts and I'm about to lose the passenger foot peg mount on the right side.
the engines are supposed to have a balancer shaft in them, is it possible for it to have been badly timed from new? Bike is a Panterra with a CG125 engine.

P.S. not meant to be a bitchfest, I really enjoy riding it

Welcome to Chinese bikes!! LOL LOL

I have had to have some things welded on my TMEC--the front engine mounts have all cracked and the engine is now welded to my frame. It still starts every morning and still drives the 16.3 miles to work at up to 55 to 60 mph, and gets me home the same distance (mileage checked via Google maps route I take to work--the speedo was already not working when I bought the bike uses, LOL).

I will be getting a new TMEC 200cc because I can get a heck of a deal on one, but the guy in China who oversees North America for Bashan joined in a discussion on mychinamoto of their new GY200-18 (you should get over to Advanti Powersports in Mesa to see one in person since you live a lot closer than I do) and hinted at having someone test ride one of the bikes, which I promptly volunteered to do since I do commute year round thanks to it being dry year round-I might have a slight chance at one of those bikes. Otherwise a brand new, TMEC, vibrations and all!