Question about 1990 BMW R 100 RT

2 Answers

BMW R100RT 1990 Brake & Electrics

Was an ex-UK police bike and then in another life got written off. Been standing for years waiting to be loved.
Now I want to ride it, brakes seem to be "stuck", and the electrics "go crazy".
When I connect the battery Christmas starts, hazards come on flashing on the display, when I try indicators both come instead of only one, in other words there is anarchy in the electrics.
Any hope?

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 46 Answers

Christmas tree syndrome (flashing lights and all) is usually the result of a bad earth.
Start at the battery check all earth connections, especially at the motor and froame.
I am sure you will find some corrosion.
Good Luck
Jon

Posted on Feb 14, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Battery is not loading, red lamp burning while engine works

Posted on Jun 25, 2013

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

K100rs I had all fluids changed during annual,at that time bmw mechanic changed rear brake pads.after a few stops with the back brake the motorcycle looses all pedal pressure in the rear brake. when cycle...


Hi, Anonymous take the bike back to your mechanic and politely demand he stops putting your life in danger and repair the rear brakes for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. If necessary, transport your bike to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your issue. For more information about your issue please visit the website below. Good luck and have a nice day.
BMW Airhead BRAKES and other motorcycle brakes sidecar brakes
Dealing With Low Brake Pedal
http://www.k100.biz/pdf/OFF/K100_K75_2V_eng.pdf
BMW Motorcycle Parts Fiche OEM BMW Motorcycle Parts online 1970 present BMW
http://www.bmw-motorrad.com/us/en/index.html?content=http://www.bmw-motorrad.com/us/en/services/manuals/manuals_main.html¬rack=1

Aug 30, 2013 | 1988 BMW K 100 RT

1 Answer

Front brakes dragging


Hi, Henry for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. If necessary, transport your bike to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your issue. For more information about your issue please visit the website below. Good luck and have a nice day.
BMW Service Why you need to flush your brake fluid
BMW K1200LT Integrated Brakes and ABS Flush DIY
Bmw r1200rt service manual pdf
BMW Motorcycle Parts Fiche OEM BMW Motorcycle Parts online 1970 present BMW
http://www.bmw-motorrad.com/us/en/index.html?content=http://www.bmw-motorrad.com/us/en/services/manuals/manuals_main.html¬rack=1

Sep 10, 2012 | 2006 BMW R 1200 RT

1 Answer

R100rt will not shift into 5th gear 1980


Hi, Djstarr for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. If necessary, transport your bike to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your issue. For more information about your issue please visit the website below. Good luck and have a nice day.
BMW Airhead motorcycle 4 and 5 speed transmissions 5 speed Circlip repairs...
Airhead transmissions
Bmw r100 service manual
BMW Motorcycle Parts Fiche OEM BMW Motorcycle Parts online 1970 present BMW
http://www.bmw-motorrad.com/us/en/index.html?content=http://www.bmw-motorrad.com/us/en/services/manuals/manuals_main.html¬rack=1

Sep 11, 2010 | 1982 BMW R 100 RT

1 Answer

I keep a slow trickle on the battery at all times, but I still can't seem to keep it charged. How can I tell if something is draining the battery? COuld it be the alarm system light? P.S. My husband and I...


first check if the battery is any good,, it maybe that its lived its life and you need to put a new one on the bike,,also check if this battery charger is realy charging the battery up,,the charger may be working but is the charge reaching the battery? to check if there is a drain just hook up a meeter if it reads a big drain when nothing is on then its the alarm using up the power but the charger should keep the battery toped up ok? i keep a solar sell of 2.5 watts hooked up to my bmw all the time and i never have had a flat battery yet!!! a charger may "over cook" the battery and that will kill it off very fast, all it needs is a stand by charge going into it thats only about 50ma 's and a battery's life is only about 2 to 3 years so if its older than this fit a new one to the bike

Jul 17, 2010 | 2002 BMW K 1200 LT

1 Answer

I have a 1984 r100rt with only 24000 km on clock bike was not used for about 5 years - when I start the bike a thick black smoke is generated-with oil smell-is it the valve seals?


no,, its just oil thats run down the valve seals and the pistons are letting a little oil past just run the bike up till it clears its self out,, its been standing around a long time,, it will clear with a good run up,,,
thats why there called "the flying brick" 24000km is just run in for one of them! servic it well and it will go round the clock twice,, show me a bike that can do that? and dont say "honda!!!! ha ha ha! joke!

Mar 02, 2010 | 1983 BMW R 100 RT

1 Answer

I have a 1983 BMW R100RT. Potential charging problem


Hi Tom,

Typically, the charging voltage should be somewhere around 13.5VDC-14.5VDC, so you may be experiencing signs of a problem.

Before doing much else, I'd recommend you do two checks:
1) Assuming you are referring to a voltmeter mounted to the bike in your message, double check the voltage using a multimeter at the battery terminals to confirm there isn't a fault with your bike's voltmeter.

2) Because I'm unfamiliar with your particular model, I'd recommend checking the spec for your bike -- if you have a service manual, it should list the proper voltage range. Otherwise, you can probably contact a dealer or BMW tech to get the spec.

If you are below the recommended voltage range, there are a variety of possible faults.

The first that comes to mind is your regulator/rectifier circuit. The purpose of this circuit is to 1) rectify (turn the AC current generated by the engine into DC current) and 2) regulate (make the current stable at a given voltage, say 13.5 VDC, and dissipate the excess voltage as heat). Because this part turns excess electricity into heat, it's not uncommon for regulators to 'burn out."

I believe the diode board you replaced is the rectifier portion of the circuit, so it sounds like the regulator portion may need replacement. FYI, an aftermarket "reg/rec" that combines the regulator and rectifier is available for your bike (see: http://www.electrexworld.co.uk). The advantage to switching to such a unit is that it's probably better engineered than the OEM unit (more efficient/better heat dissipation), and might last longer.

If your battery is more than a few years old, you may want to take it to a dealer or auto parts store to have checked (many will do this for free), and consider replacing it. Often one bad component in the charging system will cause other good components to fail.


Finally, here is a generic fault finding diagram that is very well put together:
http://www.electrexworld.co.uk/pdfs/Troubleshooting-3P-PMG-&-RR.pdf

Good luck!

Sep 30, 2009 | 1983 BMW R 100 RT

2 Answers

Where in the fuse box is the fuse for heated handgrips on a BMW 2004 rt1150r police mc


The handgrips heater fuse is #7 in the box. 7th from the left,(as sitting on bike), and is 4 amps.

Sep 28, 2009 | 2004 BMW R 1150 RT (ABS)

1 Answer

I need the torque values for the nuts securing the valve covers and for the center stud cap nut for a 1983 BMW R100RT.


Rocker cover cap nuts are torque to 22 / 26 Nn and the 6 mm threaded valve cover nuts should be 10 - 20 Nm
Ride Safe
Bike-Doc

Please mark this as useful (if it has been!!)

Aug 02, 2009 | 1983 BMW R 100 RT

Not finding what you are looking for?
1990 BMW R 100 RT Logo

268 people viewed this question

Ask a Question

Usually answered in minutes!

Top BMW Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4471 Answers

yadayada
yadayada

Level 3 Expert

60769 Answers

phil cuzins
phil cuzins

Level 2 Expert

79 Answers

Are you a BMW Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...