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Panhead_dan
Posted on Saturday, June 25, 2005 - 12:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Sorry if this has been discussed previously. I've been looking for it all morning.
I spooned on a set of 208's and gained a wobble at around 100 mph. My questions are; is it the tires? Anybody else have this happen or should I be looking at other parts of the bike?
'03 XB9S
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Buelliedan
Posted on Saturday, June 25, 2005 - 12:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

check top make sure you have tightened the front axle bolts properly. In other words tighten the axle before the pinch bolts.
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Panhead_dan
Posted on Saturday, June 25, 2005 - 01:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Front axel was tightened correctly. I just rechecked to be sure. No excess play in the neck, rear wheel or swingarm.
That's why I'm thinking tires....
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Bcordb3
Posted on Saturday, June 25, 2005 - 06:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Could be a tire balance problem.
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Buellhusker
Posted on Wednesday, June 29, 2005 - 12:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Dan I also just installed the 208 on my 1998 S1WL and now I have the front end hunting around from 90 and up. I have run 207, 205 & 204 before and never had the front hunt around like this. first time I rode it with the 208 scared the hell out of me I thought we were going into a real tank slapper. The more miles I put on the tires the less it hunts around but I am not happy with these tires at this point.
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Wyckedflesh
Posted on Wednesday, June 29, 2005 - 05:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Dan, how certain of the balance of the tire are you? How much balance weight did it take? Are you certaint that your head bearings are in proper tension, that is something the XB's are very sensative about. If you have the Service manual I would suggest making certain the head bearings are adjusted properly. It makes a difference. What tire pressure are you running in it? What tire did you have on previously? The front 208 has a slightly different profile from the 207 that may need you to fine tune the suspension once again. Check and see if there is any feathering already starting on the tire itself. Not sure how many miles you have on it since you say you just put them on, but I have seen Dunlops feather up in less then 200 miles due to having too much air in them.
36psi front
38psi rear
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Panhead_dan
Posted on Wednesday, June 29, 2005 - 09:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The tire pressure is at whatever it says on the tires. Exactly.
I did no balancing, only lined up the dot.
I only checked the neck bearings for excessive play by raising the front end off the ground and yankin on the forks, looking for a clunk.
I have not gone through the suspension this summer, I assumed that it would stay set from last summer.
The previous set of tires were D-207's.

I do have the shop manual and it sounds like I need to do some reading........
Thanks for the tips y'all!
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M1combat
Posted on Thursday, June 30, 2005 - 01:08 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Lined up the dot with what?
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Dsergison
Posted on Thursday, June 30, 2005 - 10:40 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The tire pressure is at whatever it says on the tires. Exactly. (has nothing to do with what buell reccomends, afterall you could have put them on a goldwing)

I did no balancing,
(so you expect it to be balanced?)

only lined up the dot. (with what)
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Buellhusker
Posted on Thursday, June 30, 2005 - 10:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Don is not dreaming this up. Like my post I also have the front end hunting around and I have a S1WL and the head bearings are new within 1,000 miles and the head bearing tension is set as per the factory specifications and both of the tires are balanced to within 1/16 oz and the pressures are as specified. And yet the front hunts around. I now have 300 miles on this set of 208 and they are getting more stable as I add miles. but it still has me wondering why the 208 hunts and the 207 were as solid as a rock. If the tires are out of ballance they shake and hop up & down they don't wander and cause the front end to woble like the start of a tank slapper.
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Dsergison
Posted on Thursday, June 30, 2005 - 11:46 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

if the tires are in static balance only that's very very different from dynamic balance.

it you only statically balance tires they can still have a significant inbalance side-to-side.

the polar axis would not be in line with the bearing axis

that will cause the wheel to wobble.

usually a static balance job is good enough, not always.

always try to put wheel weights in the center of the rim, not on the outside edges. I realize the rims are humped. r there coulds be spokes in the way, so put some on one side and some on the other.

(Message edited by dsergison on June 30, 2005)
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