got the R90 out in the sun

[20774]

But what is the cylinder with the wires just to the upper left of your oil dipstick?

I think it is a remotely mounted oil pressure switch. Looks like a hole is drilled through the case to hold the bracket. Strange that something like this would need to be done.

[8ninety8]

That's the pressure sender to the oil pressure gauge, couldn't see routing it somewhere under the motor just to hide it. Kinda like seeing everything, no battery covers for this bike, although I've got four of'em, and another dipstick undrilled. Function before form, or Bauhaus still rules on this German bike.

Here are the old Zeunas welded up with stainless, should last a couple years? Now I understand Setright's phrase in "Bahnstormer", "it gives you a sense of permenance" that is model 247.

I'm getting out the old #414 Elephantboy GPS unit, cleaning it, oiling it, and checking out the fitment.

Almost forgot, the oil pressure switch was fitted to a chopped off timing chain idler lever trimmed and bolted to the block through a hole forward of the drain hole. I've got the original block for the next owner.

[mfwren]

just curious- what kind of oil pressure do you see with engine hot, at idle and at speed?

Michael
__________________
78 R100S 81 R100RS

[8ninety8]

I picked up a 70 psi VDO gauge many years back, so, when it starts up the pressure is pegged off the scale, probably somewhere around 110 to 120 psi.? After it's been running fer awhile it drops down between the 50 to 60 marks at idle, running, always above 70. Was going to get a higher scale gauge, but, all I really want to know is how it's pumping and if it's pumping. Same with the voltmeter, every one you put on the reading is different. I'm looking for a steady voltage, however, I think I'll swap out the Harbor Freight unit for the old Sun unit, just for fun.

Out for a spin, just back, carbs surging a little around 3000 RPM, another project for Sat. morning.

[wecm31]

Okay...If I find myself at that speed, I'll try to keep that in mind

[8ninety8]

Got some new ignition wires and finished up a few loose ends, except for Krauser racks and bags, guess this is what my new old 900 looks like. Front fender matches the long chrome mufflers. Front end is stiffer, tires feel soft compared to the hard old rubber that came off. A few adjustments and it's good to go. Thanx to all who looked and to BMW who gave us something to do other than watch TV. Gotta try out my new helmet tomorrow.

[toooldtocare]

My favorite color for a BMW, smoke. Nice.

Wayne

[8ninety8]

Credit to the cover story of BMW Mag, spring '11, with Earl Grey on the cover, a cafe Berlin urban creation of "Urban Motor" Berlin, where I saw the 90 degree Karcoma, which I got from Hucky.

And the drilled oilstick, which I always wanted to do, but didn't until I saw a mega drilled scrambler duo in same mag., the Gudermann veteran enduros. And I knew I had to drill mine.

So a salute to the German fabricators who are always improving the breed. You never know where you're going to see something at the same time you've got your bike in pieces, karma I guess, or Karcoma? What's next, maybe floating front discs, and an aluminum tank? The rust problem finally solved. Improving the breed one winter at a time.

[8ninety8]

Here's my new topcase cover for the awfully big rubbery thingee. Leaves a lot more room for wiring and matches other holes on this rig.

[Patsplace]

Very cool!!! Gotta love the inspirational stuff that an article like this provides.

[8ninety8]

This is where that part came from, a surplus piece, maybe a Quartermaster can tell what it originally was. I was going to close up the hole with a plate, but then it wouldn't have the original design feature of having a bulge on top of motor?

[jerulator]

My favorite color for a BMW, smoke. Nice.

Wayne

I'm with Wayne on the color ! It looks Sick (my sons lingo). That is the best looking bike I've seen in a while. Great job on the build!
Jerry

[ISAMEMON]

yes great looking bike

about oil pressure. I was thinking of switching out my clock for an oil pressure gauge someday ( far away day, low priority). isnt ther a sending unit that would fit in stock location ??

[8ninety8]

It came with VDO gauges twenty years ago from flea market, cyl. temp., oil temp., oil pres., and the related wires etc. Because it's only a 70 PSI unit, it's pegged all the time except when hot and idling. Looked at a lot of bikes over the years, and the ones that catch my eye are the ones that I can afford and are functional. Better than a light 'cause it's got a needle, lights burn out. Clocks seem useless when you can look at the sun.

Saw a hotrodded VW with copper lines, so why not a bike, and you can polish'em up once in while. Four more holes in the airbox, and that'll be finished.

This bike, if purists are wondering, was a sorry case of various parts that worked but were not originial. Not worth restoring to original. A lot is original, but a bike of parts is fun to fool around with, and, winter is upon us.

[RINTY]

Very nice!

Now, about the colour of the brace...