Saturday, November 17, 2012


 Something a bit different.....this is a Motometer speedometer/tachometer from a '72 BMW motorcycle. The Motometer weenies managed to stuff a cable driven speedo AND a cable driven tach into one case. Turns out that the main input shaft housing for both the speedo and the tach are essentially the same, except for different size threads for the drive cables. The item just behind the tach face is the input SHAFT. Just behind it is the input HOUSING.
 This shows the vertical shaft assembly--the gubbins that operates the odometer in the speedo section--which is omitted for the tach. Typical of such 40 year old instruments, the grease was hard as a brick bat. As always, I took the sucker completely apart, cleaned, lubed and adjusted it, and for the speedometer section, calibrated it for speed vs miles.
The whole schmere...well, the major players, anyhow...are shown here. The small cylinders just behind the speedometer assembly are the tubes for four warning lights. Everything in this photo has been reconditioned. All that was left was zinging it back together.  Interesting little instrument!  Don't be hesitant to contact me if you have a cable driven speedo or tach that needs help---I'll take a look at it and see if I can give it some new life!

Saturday, November 3, 2012


 SAAB, in their infinite wisdom, made the transmission for the 95/96/97 models VERY unhandy when it came to checking the transmission oil level. The drill is to remove the check plug [see drawing above] and if oil runs out, the oil level is good.  If no oil runs out, take out the fill plug and add oil until it does run out, then replace the check plug.  Some Saab owners don't even know where the check plug IS, and has even less inclination to go through this drill.  So a dip stick is a real good idea, and can prove to be a transmission saver since the owner MIGHT actually check the transmission oil level on occasion.
 I built a construction fixture [red item at the bottom in the photo above and top red item in the photo below] that exactly matched an original SAAB trans dip stick, so when the stock of dip sticks have been sold, I whip out the fixture, and make up some more of them.
This photo shows seven [of a dozen] freshly completed dip sticks plus the original Saab dip stick [red, top next to the fixture]. I add the "MIN" and "MAX" notches, as per the original. Now, y'see, all you have to do is remove the fill plug with a 3/8" drive extension, dip the dip stick into the trans, pull it out, read the oil level, add if necessary, put the fill plug back into the transmission case, wipe off the dip stick, and if you're  a neatnick, you didn't even get oil on your hands. PLUS, your transmission stays properly oiled and happy. By the way--SAAB used to offer these dip sticks through their dealers. Since that is no longer an option to the vintage Saab owner, I thought it would be a good idea if I made the little buggers available.  Good stuff, huh?