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General Category >> Rubber Side Down! >> Speedo buzzing
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Message started by BPK56 on 02/08/20 at 13:24:30

Title: Speedo buzzing
Post by BPK56 on 02/08/20 at 13:24:30

I've tried searching the Forum but found no hits. My speedo buzzes when the rpm's are up. Especially in 5th at 55 to 65 mph. It screams! I took off the tank and the 3 nuts on the springs are tight. How now?

Title: Re: Speedo buzzing
Post by batman on 02/08/20 at 15:41:25

I used RTV shot inside the three springs ,basically filling the springs in a cylinder shape . I think the springs have a frequency, RTV seems to cancel.

Title: Re: Speedo buzzing
Post by BPK56 on 02/09/20 at 12:21:58

RTV shot?

Title: Re: Speedo buzzing
Post by Yoshi on 02/09/20 at 18:45:49

You can replace those springs with some fuel line

Title: Re: Speedo buzzing
Post by IslandRoad on 02/09/20 at 19:45:07

You can stretch the springs with a pair of pliers ... worked for me. I stretched them to about 50% longer then stuck 'em back in.

Title: Re: Speedo buzzing
Post by BPK56 on 02/21/20 at 10:03:10

IslandRoad, the spring stretch did the trick! Thanks for the advice.

Title: Re: Speedo buzzing
Post by DragBikeMike on 02/21/20 at 11:04:53

Great info. Years ago (like around 1989) I had this buzzing problem on an old 4-speed LS. I never figured it out. Drove me nuts. Now I know how to fix it. Thanks for letting us know how it worked out. :)