Speedo flutter forum › forum › Technical › Speedo flutter This topic contains 5 replies, has 4 voices, and was last updated by Richard and Pat 1 year, 1 month ago. Author Posts 04/04/2017 at 2:11 pm #10939 Richard and PatParticipant Hello Trikingistas, Can anyone tell me why I am getting a Speedo flutter like an old British Bike speedo above sixty and at 70n it goes haywire please? Thank you 04/04/2017 at 2:46 pm #10941 davidParticipant presume a cable turned speedometer ? if so maybe some oil down the cable..if its electronic, maybe re-calibrate it on the road… 04/04/2017 at 3:16 pm #10942 mikebikeMember Check the pick up on the wheel. 04/04/2017 at 4:28 pm #10943 MusselermarkParticipant Specific distance required between magnets on wheel hub and pick up sensor ( 1 to 2 mm ) ? 04/04/2017 at 4:30 pm #10944 MusselermarkParticipant I forgot to add 60mph ! or even 70mph !! What size Box do you need to survive that ? 04/04/2017 at 6:05 pm #10946 Richard and PatParticipant Thank you everyone, it is electronic and although I fitted the two magnets I will check measurements again. Mark: No box this time just a set time for the MOT and via the A1 🙂 Author Posts You must be logged in to reply to this topic.