Is the speedo sensor rebuildable?

[gotjeepzj]

I think I traced my speedometer woes to the speedo sensor.

[jgordon]

I think I traced my speedometer woes to the speedo sensor.

What ya got for a bike? Most of the time its better to just watch Ebay and pick up a used unit and slide in there...

[gotjeepzj]

79gs1000L I kept hearing a on again off again wurring sound from the front. The last time I heard it my speedo went crazy and started bouncin from 20-140 mph. It bounced so much the needle actually broke off. I bought a new speedo and wanted to it was the problem. I'll hook the drill up to the speedo cable and see if the old speedo moves.

[SqDancerLynn1]

Do yourself a favor & buy a new cable

[cberkeley]

I had such a whirring noise problem, together with a wild needle which eventually broke. Turned out it was coming from deep inside the speedo. Those little gears inside the instrument were all lube starved after some 46,000+ commuting miles of the previous owner. Early one Sunday morning, while all were sound asleep, I donned my magnifying eye-gear and surgically cut the case open by circumscribing it with a careful Dremel, cleaned out the inside with co-contact cleaner, then used some instrument lube on all the little gears. Crazy-Glued the broken needle pieces together, re-painted the red on the needle tip using an appropriate shade of the wife's nail-polish, sprayed some WD-40 in the air around the shop to mask any tell-tale evidence of acetone aroma from the nail polish, then mated the case halves together with Devcon 2-part plastic weld. Presto! ...works, sounds and looks like new, no one can tell I was in there. Checked against my GPS the speedo is about 5% generous.
.....strange my speedo needle matches my wife's toe nails

[txironhead]

Ain't it amazing what you can do with that stuff? My wife hates when I start digging through the bathroom while I'm working on a bike. I've used her gloss black (for halloween, she's not gothic) polish to touch up frame nicks, clear to touch up small nicks in the clear coat, red for gauges, touching up trim, emblems, etc. I've even thinned it 50% and used it in an airbrush when I used to customize Hot Wheels. All it is is quick-dry enamel. But boy was she mad when I used her favorite high-dollar aqua emerald for a Scorchin' Scooter......taught me to ask first.

Don't think she'll notice the little bit you used on the needle though. Good call on the WD-40 coverup.......

[t3rmin]

My wife actually let me use a mixing bowl from the kitchen as an oil drain pan the other day. Do I have a great woman or what? ;-)

[cberkeley]

Now, that woman is a biker!!

[cberkeley]

If any of my mechanical instruments do fail again, I am definitely going "Glass-Cockpit" with the electronic speedo/tach instruments from Electrex this stuff is cool and not too expensive. I will however, have to build myself a Blue 7-segment display for the gear shift display, but that's pretty simple.

http://www.electrosport.com/electrosport_speedo_2900.html

[ScottMc1100L]

.....strange my speedo needle matches my wife's toe nails

You'd just better hope that she recognizes it as one of her colors:razz: not your girl friends!

[gotjeepzj]

I pulled off the speedo gearbox and I think it's fried. If I turn the ears by hand it locks up and I don't see the end turning that the cable goes in. I'm thinking maybe I can't turn it quick by hand to notice the cable end moving. I think I'll repack t with grease, reinstall it and the cable and swap out the speedo and see if that help.

Which year/model speedo gearboxs will be compatible with my bike?