Clinician
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Post by notscruffy1 on May 20, 2010 22:33:36 GMT -6
I got it on the road today. Oh man it is sweet. I may check this in all of my scooters , the difference is night and day.
Really if you have an issue like this that nothing seems to help much, you might want to take a look at the seating of the bottom race. They may not be as bad as this one was but they might be off a lot.
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Clinician
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Post by notscruffy1 on May 17, 2010 13:13:05 GMT -6
I think I am getting somewhere. Today I decided to tear it apart and inspect the steering head up close. Although I had adjusted and readjusted the pre-load on the steering bearing I could not get them as smooth and silky as my other three scoots.
Everything looked fine on the outside of the bearings but when I dropped the triple tree out it was clear that the lower bearing race was not seated squarely.
I could not seat it so I took it out. The photo is what I found. The rear of the race was almost an eighth of an inch short of the seat. Metal had piled up behind it and had to be ground down before the race would seat properly.
After about an hour of careful application of my die grinder I was able to seat the race.
In effect the triple trees were balancing on one ball (maybe two) at the back of the race. At least now I can adjust to the same silky feely as my others.
Now to reassemble everything and test ride.
The good news is that after all my careful measurements and comparisons on the geometry of these bike they are remarkably true. The front shocks, front disk and front axle are within 1 degrees of where the should be to the rear axle and disk. I have ridden bikes further out than that and they were fine so I think the canted race may have been the problem.
I will let you know.
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Clinician
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Post by notscruffy1 on May 13, 2010 12:27:46 GMT -6
The dealer is standing up as of now. The are getting info. I took measurements using my digital level and a laser. They agree it is not right and that a bent frame is a real possibility. I can not fault them or their support so far.
I will share the photos of what I have after the dealer has responded with their interpretation. Like I said so far they have been great. They will go un-named until I know what I'm calling them! (humor of a sort)
Yes we have checked over and adjusted the head set (forks to grips) adjusted somethings that seemed on the edge of OK. Nothing so far. Now we are looking for tweaked I think.
If anything comes to mind (to check or measure) please let me know. I had to qualify that because some of the stuff I have seen from JRs mind is already twisted.
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Clinician
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Post by notscruffy1 on May 13, 2010 5:44:52 GMT -6
I recently took delivery on a new BMS Pathfinder 200. I have gone through the scooter and am pleased with the quality I found. A few minor issues but nothing big.
This is not my first scooter. I have three others. I bought this with the intention of giving it to my son because his scooter was stolen. The stolen scooter was an ITA 150. SO we are familiar with the 16 inch scoots and that one rode like dream.
I began the break-in a few days ago and the thing is evil to the point of dangerous going in a straight line and down right scary in the corners.
The behavior is bad at any speed but I have not dared to go above 40 because it is so scary. In a straight line the scooter wanders and hunts, sometimes abruptly. Any input to correct the wandering can create a violent reaction.
Counter steering for a corner will start the bike into the corner, but as soon as you have the line and the angle it is impossible to hold it. Very spooky as well!
I cannot turn my son lose on this if I will not ride it.
Tire pressure, loose blots and the like have all been addressed with no change to the handling.
I put a little more preload on the rears and things got worse if anything.
Any ideas on what I am looking for would be greatly appreciated.
On the up side the 176 cc motor is clearly superior to the 150. There is much new in this engine. It has a high rise intake manifold the raises the carb up over the engine mount. external oil galley from the oil pump (very easy to install an oil cooler) and has run like a top so far (only 10 miles so far).
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