Wacky Speedo ???????

[12960]

The speedometer on my 77 R75/7 just did something weird.

It had 48K on it and when it went to go to 49K the 10,000 digit rolled with it.

Now the speedo has 59K on it.

Anyone ever seen ths?
anyone know of speedo shops that can refurbthis one?

gerry

[TZOLK]

That Palo Alto speedo repair joint. It advertised in the MOA.

[The_Veg]

I've heard that Palo Alto charge dearly for their services.

You might save some $$$ with the information found here.

[braddog]

I think three is also a step-by-step repair list, with pics at:
www.airheads.org

I've contacted Palo Alto about my non-functioning speedo. They're kind of spendy, will also require you to replace the speedo cable in order to honor any warranty, and you basically get a rebuilt unit for turning yours in.

Check places like Bob's or A&S cycles, if you'd rather spend money than try to repair yourself. You may find that buying new is just as cost effective as buying a rebuilt from Palo Alto.

[12960]

OK, thanks for the info but it looks like that is a trip odometer repair.

my problem is the main odometer.

Is that repairable or replaceable as a unit?

Gerry

[DougGrosjean]

OK, thanks for the info but it looks like that is a trip odometer repair. my problem is the main odometer. Is that repairable or replaceable as a unit? - Gerry

Yes to both.

You can replace the whole unit, or the odo is somewhat repairable.

Same thing happened on my 1978 R100s. I took the odo apart, and found that the number wheels had spread apart on the shaft (probably due to vibration), such that their engagement with each other was random, and the odo reading was random. Was fun at first, getting fuel at 61,000 miles and having lunch at 97,000 miles all in the same day. Got old quick, since the bike at that time (bought used) didn't have a working reserve either, so my fuel guage was suddenly: (clock readings x speedometer readings).

Really condensed version:
I solved it by roughing up the shaft that the number wheels ride on with sandpaper and gently pressing it all back together. Worked fine for the next 40k miles; I sold the bike when it had 60k miles on it.

Been about 15 years since I did the repair, so the above is vague because it's been a long time.

And the potential for disaster is certainly there; when you take it apart, lots of bits that can get lost or broken.

HTH!

[Stuff2c]

10k flips will increase your fuel mileage. I'd keep the old one. 10043 miles to the gallon is campfire bragging rights.