VF1000F2 speedo flicking around and reading high

Hi all.

My 85 VF1000F2 speedo is bouncing around all over the place, and if it remains steady whilst underway will like be showing double the speed the bike is doing at the time. Not to sure whether its a bad signal or the speedometer is on the way out.

Any thoughts as to why its doing this?

That’s odd i would think

If ya can’t get it fixed i’ve a set from a 1987 one for sale

you speedo cable is faulty
the wheel drive is mechanical so its not that
clocks are very reliable in my opinion

I have two F2s…both do exactly the same thing. I have swapped around cables (inner and outer), gearbox drives, and of course the actual units. I have tried a brand new cable (so that’s three cables in total). I have tried two different types of grease (lithium and something general), and then powdered graphite. Same result. My conclusion is that there was a bad batch of instruments (perhaps just in the 460 bikes that came to Australia?), and particularly the little plastic gear that drives the odometer. What I currently ride with is a speedo that initially works accurately and steadily, then as riding time progresses the needle swings and reads wildly optimistic (200km/h+ in third gear…who would have thought that possible :grinning:). My best guess is that the heat generated through use (friction of all those gears whirring around inside the unit) causes the instrument to malfunction. Normal service resumes once the speedo ‘cools down’ (I park the bike at work for the day). And of course neither odometer works. Both my speedometers are in great external condition, never dropped or damaged. One of them had travelled just 18,000km from new, initially fine, but it stopped working reliably just short of 20,000km. I’ve owned at least a dozen Honda’s over the years, road and off-road, and have never known this issue with any of them, except the F2. Is it the way the cable is routed on the F2? Seems conventional, and there’s no evidence of wear, abrasion or kinks. I agree with someone’s earlier comment about the quality of Honda instruments…except the F2. In fact I’ve never had this issue with any bike, Honda or not. I enjoy riding the F2, now I just take a device with me (Velcroed to the triple clamp) to calculate speed and distance, and ignore the needle that oscillates madly and the trip counter permanently stuck on 0000. Let me know what your investigation turns up. Would love to have a solution.

New cable has partially fixed the issue. It has stopped flicking around now but is reading about 10-15kmh high. I’ll check the drive and clean it and re grease…