Topic: Bridgestone speedo on SOHC Honda?

[StreetSpirit]

Can't find any info googling, so I thought I would ask and see if anybody knows offhand.  I'm looking for a smaller speedometer for my cb550f and I'm coming across some old Bridgestone units on ebay that look pretty sweet.  Just wondering if they're on the same speedo drive standard as the Jap bikes or what.  No ratio is marked on the face or anything like that. 

Suggestions for other small speedos that will work are also welcome.  I'm sort of at a loss here and I want to ride the thing.   

[CycleRanger]

The speedo ratio for the 550 is 2240:60, the tach is 20:3.

The ND gauges have the ratios stamped on the back.
Other brands may have the same.

The only way to the change the ratio, afaik, would be to change the gearing in the hub.

[StreetSpirit]

ya, I'd seen that number for the 550, but what I can't find is the ratio for Bridgestone. 

[CycleRanger]

Ask the sellers if there are any ratio numbers on the speedos.
Even if the ratio is the same or close you may still need a custom cable.

[StreetSpirit]

Cables look identical as far as I can tell from the pictures, and I've seen some of the speedo's stamped Nippon Seiki same as some Honda units.

I'm emailing some people and trying to figure this out, will report back. 
 

[laself]

I realize this thread is a year old but like StreetSpirit I cant find any info on these speedo's. The sellers I've found don't know either. I've searched by part number as well.
I'm looking at this style which will fit the headlight bucket I'm going to use (Bridgestone Motorcycle 200 RS SS/ part # 8401-8200)
http://i.ebayimg.com/00/$(KGrHqMOKi8E3ZEg2YezBN5kupooeg~~_14.JPG

Was this question ever resolved? "What is the ratio of the Bridgestone Speedometers."

Any info would be great. Thanks in advance