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Old 12-26-2014, 07:05 AM   #1
Neuteke OP
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Joined: Oct 2014
Oddometer: 6
1980 R100T Project

In November I bought my first Airhead, it's a 1980 BMW R100T. I had been looking around for a used 1200GS, but I decided as a first bike this would be more fun and challenging. Plus, I’d seen some great builds here on the boards and all over the internet. I used to work on an old Jinchen (Dax replica) so I know I will enjoy this bike as well. Even though it’s proooobably on a different level.

These are some pictures of how I bought the bike:









When I saw the post from the person wanting to sell it I immediately checked online to get some more pictures, and I found that these T's originally don't have that big RT fairing. So I asked the seller about it and he said the previous owner did some modifications to the bike.

- RT fairing
- Mechanism to change the position of the bulb inside the headlight
- I don’t think that oil cooling system was originally on the bike (see pics below), any thoughts?
This week I removed the fairing, following the instructions from the workshop manual I got from the previous owner.

“exploded view” of the fairing. I made pictures of most of my steps so if anyone needs a step-by-step I’d be glad to put that below.




Picture where you can see the oil cooling system



How it looks right now:






Next on the to-do-list:
- Change all fluids
- Change headlight
- Change taillight
- Install new turn signals
- Make and install rear mudguard
- Repaint tank and fenders
- Redo the seat.

As you can see, most things on my list are more about the way the bike looks.
With regards to mechanics I still have a very long way to go, but I’ll ease in with basics like cleaning out the carbs and progress into more complex maintenance. (Any suggestions on what I should start with are more than welcome )
I think that this board will be very useful for getting information or topics about whatever it is I’m trying to do.
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Old 12-26-2014, 10:44 AM   #2
Jim K in PA
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Welcome to the asylum.

Looks MUCH happier without the barn door on the front. Mine is similar. Great bikes.

Looks like yours lost the gauge pods for the volt meter and clock.

Keep the pictures coming.
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1979 BMW R100T - Otto - Returned to the road - 5/12/11
1975 BMW R90S Hack - Olga - Olga's story - adopted 3/22/14
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Old 12-26-2014, 11:05 AM   #3
100RT
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Where are you located?
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Old 12-27-2014, 09:54 AM   #4
Neuteke OP
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I'm from Ghent, Belgium.

I forgot to mention that the bike has about 123.000 kilometers on it and that it was revised (pistons were replaced) at 100.000 km.
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Old 12-27-2014, 10:08 AM   #5
patrkbukly
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Best bike ever

Welcome.
I have the same bike, same year, points ignition and solid through and through. Mine has done Miami to San Francisco a dozen times without a single pickup. Mine has about 135,000 miles on it.

Welcome.
Now put the faring back on and quit goofing around !

The breaking bad house;
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Old 12-29-2014, 12:53 AM   #6
Neuteke OP
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Hi Patrick,

The ignition on mine struggles quite a bit when the engine is cold. It can take a couple of minutes (usually 5) to get going. No choke or throttle, just holding the ignition.
Did you ever have the same problem?
I'm still getting to know the bike though.

Your bike looks good! I'm definitely keeping the fairing but I like it a lot without as well. Do you know if these came from the factory with a fairing?
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Old 12-29-2014, 01:13 PM   #7
Jim K in PA
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The "T" did not come from the factory with a fairing. It did come with the gauge pods, dual disk brakes, the RT final drive, side cases, and I believe crash bars.
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1979 BMW R100T - Otto - Returned to the road - 5/12/11
1975 BMW R90S Hack - Olga - Olga's story - adopted 3/22/14
Viktor - Coming to a thread near you - eventually
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Old 12-29-2014, 06:01 PM   #8
patrkbukly
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Honest Abe

Quote:
Originally Posted by Neuteke View Post
Hi Patrick,

The ignition on mine struggles quite a bit when the engine is cold. It can take a couple of minutes (usually 5) to get going. No choke or throttle, just holding the ignition.
Did you ever have the same problem?
I'm still getting to know the bike though.

Your bike looks good! I'm definitely keeping the fairing but I like it a lot without as well. Do you know if these came from the factory with a fairing?
To be honest mine has always, ALWAYS... started immedeatly barely touchng the button. Below freezing and warm, whatever. So much so that it inspired me to remove the electronic ignition on my PD and install the same points beancan as the RT.

Once you get yours dialed in it will do the same.
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Old 12-30-2014, 09:43 AM   #9
Solo Lobo
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Quote:
Originally Posted by Neuteke View Post
Hi Patrick,

The ignition on mine struggles quite a bit when the engine is cold. It can take a couple of minutes (usually 5) to get going. No choke or throttle, just holding the ignition.
Did you ever have the same problem?
I'm still getting to know the bike though.

Your bike looks good! I'm definitely keeping the fairing but I like it a lot without as well. Do you know if these came from the factory with a fairing?
All the airheads I have owned have taken choke and a touch of throttle to start, expect when up to operating temp.
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your bike is suitably dirty. Well done.
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So I sold my GS and went shopping for a G/S!
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Old 12-30-2014, 10:06 AM   #10
Rob Farmer
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If you decide to sell the seat drop me a line
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Old 12-30-2014, 10:09 AM   #11
Rob Farmer
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A friend of mine found an unmolested T that had stood for years. A guy came all the way from Germany for it.





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Old 12-30-2014, 11:45 AM   #12
Jim K in PA
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Question

Thanks for those pics, Rob. I guess my '79 T must have had the cowl seat originally as well, but it was long gone by the time I got the bike. I have a plain /7 seat on it now without the grab rail. Works for me but the cowl seat looks great on it.
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1979 BMW R100T - Otto - Returned to the road - 5/12/11
1975 BMW R90S Hack - Olga - Olga's story - adopted 3/22/14
Viktor - Coming to a thread near you - eventually
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Old 12-30-2014, 04:32 PM   #13
supershaft
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Quote:
Originally Posted by Jim K in PA View Post
The "T" did not come from the factory with a fairing. It did come with the gauge pods, dual disk brakes, the RT final drive, side cases, and I believe crash bars.
I think the OP's bike is a '79, not a '80. I was getting ready to warn the OP about '80 air boxes often being manufactured incorrectly thusly muffing a bunch of stuff up but then I saw the pre-'80 airbox and some other '79 stuff too. 1980 sand cast air boxes are often all sorts of trouble.

supershaft screwed with this post 12-30-2014 at 04:40 PM
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Old 12-30-2014, 05:29 PM   #14
patrkbukly
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Location: Miami, FL.
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I agree solo but....

Quote:
Originally Posted by SOLO LOBO View Post
All the airheads I have owned have taken choke and a touch of throttle to start, expect when up to operating temp.
Mine have done the same, My PD and my Bumblebee always required choke, throttle and even then just the right combo at just the right time.

I need to post a Youtube of this damn thing. It has always fired up so fast I even wonder if its bad for the damn engine because there is no time for oil to get up far enough before she's really spinning.
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Old 01-02-2015, 07:46 AM   #15
Neuteke OP
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headlight change

Small update:
I've decided to replace the headlight unit with a nicer-looking one. I needed to get into the headlight to remove some of the wiring to the oil temp, battery voltage and clock anyway.

This is what it looked like when i opened it up:



I think some of this was "homebrew", specifically the wiring for the ignition in the upper right corner.



I've labeled and photographed most of the separate wiring and will try to get it back in working order after I install the new headlight. Any things i should pay special attention to?

Also one of the next things is removing the oil cooler, so any advice here would be appreciated as well. I'm planning on changing all the oil, so that's probably a good time to handle that one as well.



Thanks and best whishes for 2015!
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