The International CBX Owners Association

Does anyone know the diameter of the speedo/tach shaft that the needles mount to, or conversely the size of the hole in the base of the needle where it mounts onto the shaft?

Hello Jeff, .049 on the shaft, speedo or tach. .022 on the voltmeter.

80 cbx dude #6216 wrote: ↑

Thu Jan 11, 2024 12:25 pm

Hello Jeff, .049 on the shaft, speedo or tach. .022 on the voltmeter.

Thanks dude, where were you 6 yrs ago? I don’t even remember why I was asking, I think it was because a friend had access to a 3-D printer and he was willing to do a few small projects.

Hey Jeff, I retired and used to do speedo repairs in my 20's. I needed to do something to keep my mind and hands active, and started doing CBX speedo repairs.

80 cbx dude #6216 wrote: ↑

Thu Jan 11, 2024 9:09 pm

Hey Jeff, I retired and used to do speedo repairs in my 20's. I needed to do something to keep my mind and hands active, and started doing CBX speedo repairs.

I didn’t put two and two together, I got it now, Dave has mentioned your work before.

Mike does a A+ job on gauges and has a fast turn around with good prices. He has done a few of my noisy gauges.

The needle in my speedo jumps between 5-10 mph occasionally and just as occasionally, stays perfectly steady. Is there a lubrication point for it somewhere? Is the lack of oil/lube the issue? It’s on my new 34,000 82.

Dynamohum wrote: ↑

Wed Mar 13, 2024 2:03 am

The needle in my speedo jumps between 5-10 mph occasionally and just as occasionally, stays perfectly steady. Is there a lubrication point for it somewhere? Is the lack of oil/lube the issue? It’s on my new 34,000 82.

Are you getting any "whining" noises out of the speedo?
Couldn't find the thread but I had a similar problem years ago and it was explained to me it was the speedo cable going south. The inner cable can act like a spring and it winds up and releases. I replaced the speedo cable and it cured my issues. You might solve your problem by lubricating the cable.

Just send it to Mike and avoid all the aggravation. You'll be very happy.

Dave

I’ll take a look at lubing the cable before Dave pays for me sending it to Mike….

Not sure what you're trying to say, but just say it. These old speedos and tachs are notorious for slow and jumping needles and a full mechanical refurbishment is the only thing that will fix them, barring a bad cable. Mike is very good at the mechanicals (and cosmetics if you desire) and it will be money well-spent to fix problem gauges. And Mike's work is quite reasonable. That's all I'm saying. Keeping and maintaining a CBX, or any classic/vintage bike is no cheap proposition.

Dave

Dayum, no sense of humor around here…

Dynamohum wrote: ↑

Wed Mar 13, 2024 6:43 pm

Dayum, no sense of humor around here…

Ya know (some) won’t get that.