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Old 08-24-2014, 05:24 AM   #1
fragile_this_side_up OP
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Joined: Dec 2012
Location: Strasburg, VA
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R100RT returning to the road after 10 years...

Good friend of mine bought this 81 off of a friend of his. It's now possibly my job to get it running again... ;)

drain the tank, rebuild the carbs, new fuel lines, new fluids all around and new tires.. and that's at least a start. ;)

20140823_174141

20140823_172356

20140823_172337

20140823_172307

20140823_172246

20140823_172238

pretty neat bike. any tips appreciated. i'll be snooping around for the time being.
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Old 08-24-2014, 05:44 AM   #2
ME 109
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Every RT has an RS inside, just bursting to get out. Poor things.

That'll come up quite nicely with a scrub. Plugs out, turn over engine with back wheel, change fuel, start button.

I might be a little impatient. Bill will let me know.
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Old 08-24-2014, 05:59 AM   #3
airsmith
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most likely points in the can, get it running and see how it sounds, petcocks need some work, the pulse system is still in place, the heel-toe shifter is a hard to find item..
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Old 08-24-2014, 07:47 AM   #4
patrkbukly
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Electronic

Quote:
Originally Posted by airsmith View Post
most likely points in the can, get it running and see how it sounds, petcocks need some work, the pulse system is still in place, the heel-toe shifter is a hard to find item..
No the 81 would be electronic Ignition, no points.

GREAT SCORE….BEAUTIFUL RT.
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Old 08-24-2014, 08:14 AM   #5
disston
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I've never had a heel/toe shifter. Always thought it would feel weird to press down with the heel to shift up? Maybe it's not. I've never had one.

!981 you have a short input shaft transmission with the lighter weight clutch carrier system that revs easier, faster and shifts easier.

I would rebuild the petcocks just because. Or at least take them apart to clean. The silly little rubber pieces are not cheap.

The Tachometer is electronic but the Speedometer is still gear driven off the rear of the trans. Check for gear oil that has started to turn whitish brown because the boot on the speedo cable leaks when it gets old and dried out. Common problem for water to get in this way. Expect a light fuzz on the trans magnetic drain plug But search for larger pieces in the gear oil. Fuzz OK, anything you can feel is bad.

Looks complete. Passengers love the Reynolds backrest. An RT is much kinder to the back and lower arms on longer rides. Depending on age that could be anything longer than your driveway.
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Old 08-24-2014, 07:34 PM   #6
airsmith
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80-81's can get weird model year vs year built, lots of things were changing, notice no oil cooler and a under the tank master cylinder.. in 81 the ignition module went were the master cylinder was mounted and it went up on the bar..I call my wifes R100T an 80.5 ,,, can points ,heavy flywheel, new style airbox..
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Old 08-24-2014, 07:51 PM   #7
fragile_this_side_up OP
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eesh. glad i took some decent pics for you all to look at. i know i have my work cut out for me and i'm double thinking if this one should be left to "professionals".
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Old 08-24-2014, 09:13 PM   #8
garfey
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Quote:
Originally Posted by fragile_this_side_up View Post
eesh. glad i took some decent pics for you all to look at. i know i have my work cut out for me and i'm double thinking if this one should be left to "professionals".
No, no ... no pros. Do it and document everything in minute detail.
(Full disclosure: a '92 RT that had also been sitting a long time followed me home a while back and I have yet to get to it. )
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Old 08-25-2014, 05:09 AM   #9
airsmith
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take a quick look through the timing hole and you can see if it has a heavy flywheel or a clutch carrier,, timing marks are on small tabs on the light version and directly on the side of the heavy that will almost fill the hole, it also looks like the rare cast metal airbox cover is still there, find a later model plastic version that will fit correctly with airfilter..take your time find out what you have ..
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Old 08-25-2014, 05:33 AM   #10
ME 109
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it also looks like the rare cast metal airbox cover is still there.
Haven't heard of that before, were the snorkels part of the casting?
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Old 08-25-2014, 06:33 AM   #11
airsmith
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they were the first covers with the change in airbox design, cast metal, all one piece, when the plastic cover came out the edge on the airfilter was added and the cast covers wouldn't fit well, you could mill out cover edge or trim off the filters raised lip, or just throw on plastic cover for a good fit.. original lip-less airfilters may be found but the system wasn't that good to start with..
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Old 08-25-2014, 07:44 AM   #12
R100RTurbo
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?

Quote:
Originally Posted by ME 109 View Post
Every RT has an RS inside, just bursting to get out. Poor things.

That'll come up quite nicely with a scrub. Plugs out, turn over engine with back wheel, change fuel, start button.

I might be a little impatient. Bill will let me know.

Impatient, or Cheeky?

The RT is the true essence of art form, certainly not deserving a back slide into RS form, or yet another café racer conversion with serious modifications over stock - wait a minute, the pots calling the kettle black
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Old 08-25-2014, 07:54 AM   #13
patrkbukly
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Wanna be a T

Every RS wants to be an r T



It's just a fact.
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Old 08-25-2014, 02:07 PM   #14
ME 109
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"Impatient, or Cheeky"

Guilty, Your Honor.

I heard RT's were made when BMW staff accidentally put RS's in the wind tunnel backwards?
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Old 08-25-2014, 08:13 PM   #15
R100RTurbo
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"Impatient, or Cheeky"

Guilty, Your Honor.

I heard RT's were made when BMW staff accidentally put RS's in the wind tunnel backwards?
I'm going to concede - having a hard time not cracking a grin on that right now.

I heard it differently however, the head of the RS design team defected to Boler Trailers.
I suspect you are more highly skilled at this end of the sand box and I'll rescind so as to allow the OP to continue his thread.
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