speed woble

Anything related to Lambrettas... ask tech questions, post helpful info, or just read and learn.
sion
registered user
Posts: 46
Joined: Fri Jan 23, 2009 11:09 pm
Contact:

Front end feels a bit wobley at speed a bit like a wheel out of balance any ideas
all looks ok
mb springs
servetta dampers
new bushes bearings ect
forks lovely and smooth
bit scary and ideas cheers
User avatar
sean brady scooters
Dealer
Posts: 2040
Joined: Mon Jan 05, 2009 12:09 pm
Location: Ripon, North Yorkshire
Contact:

are you sure your frame is straight.......................?
Sean Brady Scooters - 01765 690 698
davidblythe
registered user
Posts: 298
Joined: Wed Jan 07, 2009 7:19 pm
Location: Cheam, Surrey
Contact:

loose steering head bearings :?:
davidblythe
registered user
Posts: 298
Joined: Wed Jan 07, 2009 7:19 pm
Location: Cheam, Surrey
Contact:

if the wheel is out of balance you will see the front end shaking up and down as if riding over ripples in the road when it gets to its harmonic frequency
User avatar
sean brady scooters
Dealer
Posts: 2040
Joined: Mon Jan 05, 2009 12:09 pm
Location: Ripon, North Yorkshire
Contact:

put your scoot on centre stand........with say two bricks underneath each leg..........
check for play in fork bearings.......
Sean Brady Scooters - 01765 690 698
sion
registered user
Posts: 46
Joined: Fri Jan 23, 2009 11:09 pm
Contact:

frame checked by mike phenix on jig
bearings are spot on no lift not to tight
might try a different rim doestnt do it until about 9000 revs in 4th
might just have to live with it
User avatar
RICSPEED
registered user
Posts: 3334
Joined: Sun Jan 04, 2009 11:30 pm
Location: YORK

what tyres you got on?
Its in bits scooter club: www.facebook.com/groups/132415046859320
sion
registered user
Posts: 46
Joined: Fri Jan 23, 2009 11:09 pm
Contact:

oh its a spanish frame not indian and on dunlop tt92s
davidblythe
registered user
Posts: 298
Joined: Wed Jan 07, 2009 7:19 pm
Location: Cheam, Surrey
Contact:

loose steering head bearings would come in at much lower speeds

out of balance wheels come in around 90 -110 mph on sports bikes and clear after that
sion
registered user
Posts: 46
Joined: Fri Jan 23, 2009 11:09 pm
Contact:

just had another look when you spin the front wheel it
does seem to raise up and down slightly when you spin it?
Post Reply Previous topicNext topic
  • Information
  • Who is online

    Users browsing this forum: No registered users and 5 guests