Join Date: Aug 2006
Location: Portland OR
Bikes: 61 Bianchi Specialissima 71 Peugeot G50 7? P'geot PX10 74 Raleigh GranSport 75 P'geot UO8 78? Raleigh Team Pro 82 P'geot PSV 86 P'geot PX 91 Bridgestone MB0 92 B'stone XO1 97 Rans VRex 92 Cannondale R1000 94 B'stone MB5 97 Vitus 997
Mentioned: 30 Post(s)
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Quoted: 87 Post(s)
Why Does My Bike Have A Front End Shimmy?
My 1982 Peugeot PSVN has a bad front-end shimmy (wobble) when riding hands-off above roughly 15 mph. Doesn't matter if I am pedaling or coasting, and the pavement can be smooth. It stops if I put a hand on the bars. I've never noticed a shimmy at low speeds or if I have a hand on the bars.
Possibly related, the bike does an odd thing if I ride over a little bump (like a pavement ripple) when leaned over in a turn, this is with hands on the bars - the bike gives one little "shake of its head" then continues on its way. It isn't something I feel with my other bikes.
The bike is 58 cm, no fenders or other attachments. This is how it is equipped.
I am 5' 11", 186 lb. and usually have a messenger bag (it is my commuting bike).
What are some things I should check? So far all I've done is checked that the headset is not loose, if that even matters. I have searched here, but didn't find too much, other than to make sure fenders aren't loose - which is not applicable.