Post by urbanmadness on Oct 22, 2015 11:46:00 GMT -5
My buddies 150 cc scooter now swerves anytime we take it thru a turn. to the point where it feels like there is oil on the tire (There is no oil on the tire)...
She said that she was coming home from work, heard a bang then the swerve problem started.
Here is what we have done. We took the plastics off the rear of the scooter, pulled the motor. We have inspected the frame and did not find any cracks (although if someone knows of an area of the frame that needs to have special attention during inspection, please let me know) We found all the bushings to be in bad shape, I've ordered the new cross member and all the mounting bushings. I'm just waiting for them to arrive.
Now for my questions, would the bushings cause this? Should I look at replacing the rear tire as well? would a bad rear tire cause this?
Post by dyoung1167 on Oct 26, 2015 12:47:26 GMT -5
yes the bushings would do this, they are what keeps the rear tire/motor lined up with the frame and front tire. i helped my bushings to stiffen (slightly) and last much longer by drilling out 4 thin 1/4 x 1 1/2 washers to the size of the main pivot bolt (i'm referring to the one on the motor(10mm i think but may wrong, check it first)). when you get the new ones and all is ready for the motor to be lifted into place on the new cross member put a washer on each side of each bushing. it is a bit tedious but works well. oh, and also put some descent protective lube (some lubes deteriorate rubber) on the rubber of the bushings prior to installation. my bushings have been going strong for five years and were a bit deteriorated before i did this the first time but they have still held up after. i drilled out washers because the right size washers tend to be quite thick and not fit.
Last Edit: Oct 26, 2015 12:50:28 GMT -5 by dyoung1167
yes absolutely the bushings would cause mild to severe handling symptoms,,,they are the only thing holding the engine/rear end straight in the bike and is essentially half of the bike,,,as far as the bang goes i'd be looking the chassis over with a fine tooth comb,,,just to make sure a mounting tab or tube broke,,,i'd be giving the pivot area of the frame the long look,,,also id be giving a real good look at the shocks to see if one of the springs coils broke off and went flying,,,that would cause a pretty sharp report when they fail
Post by urbanmadness on Oct 26, 2015 15:07:14 GMT -5
the shock looks good. We pulled the engine so I could inspect the frame. I didn't see anything. The bushings are bad, but not that bad... deformed but not falling apart. I am wondering if the tire might of separated as well. I am going to give the frame another good going over. Check, check and re-check..... We have already agreed, that if it's the frame.... then the scoot is done. Not gonna have it welded, etc.... We will just get rid of it. Sell the motor, wheels, and plastics. The motor burns just a touch of oil, but it runs like a Swiss watch.
My buddy already bought a nice replacement anyway.... a 250cc nighthawk, for his girl to learn on. I've got to go thru the turn signals, put some tires on it, and do the brakes. Runs and drives very nice (other then having absolutely no front brakes, and I mean no front brakes) If I was a smaller dude, I'd ride the heck out of it. (it's just too small for me; especially because I'm used to my goldwing).
He got a sweet, sweet deal.... we actually traded a really ratty sport bike for it and we are getting a rack changed in a maxima. The bike we traded was a lean sale from our tow yard, soooooo, we really are not out anything.
2007 Verona 150cc
115MM Hoca variator
12 gram weights
Mukuni fuel pump
top speed (58mph on GPS)
Upgraded valve stems after a blow out