Had a short term speedo malfunction. For the first time my speedo indicated I was travelling at 110mph. Although chuffed with myself I realised the HGV in front of me must be doing the same speed and my pillion wife wasn't punching my back to slow down (happens any speed north of 65mph). The speedo stuck at 110 then dropped to 80 then 40 when I came to a stand still. On switching off it dropped to 0 and then was fine on starting up, the fault seemed to clear. Is this the start of some electrical bad news? It is a Thunderbird 1600 on a 2012 plate. (Wish I had taken a photo of the speedo to cast before all who say I just bimble along!).
Bizarre, not heard of that. But good news! Bike showrooms/workshops are opening up this week! I'd take it to be looked at. The closest I ever had to that, was on my Speedmaster (also a '12 plate I think), which had a dead - and I mean _totally_ dead battery while I was out and stopped at a service station. I managed to get it started by rolling it down a small hill and bump-starting it. Then on the way back, everything was completely fucky (a technical term). The speedo was mostly not working at all, and was further affected when I used my indicators, or brakes. It made for a scary ride home. Gotta love British engineering!
Knowing my luck it will be a intermittent fault which doesn't show up if I take her in leading to much stroking of chins. Wondered if it was a known problem and something needing just a sharp tap with a hammer (limits of my mechanical ability).
Steve822 Wouldn't let it worry you if it has cleared. Probably just a sticky float and now with clean fuel it will free up again. Regards Joe.
Cheers for that, you're onto something there. The low fuel light had come on just before the speedo had it's moment and I filled up afterwards.
This was a problem for some early Thunderbirds. Mine(010) went through a phase of doing this on longer runs when the sun shone. A number of others had the same. The alleged cause is the Speedo needle warping slightly. The cure was to cut a small circle of baco foil or similar and sellotape it over the centre of the Speedo. I tried this and never had the problem repeat. I took the cover off last year and despite using it to tour to South of France in July the problem hasn't so far returned. Make of that what you will.