Boxerworks.com

So I am the original owner of my 1984 R100 S

It functions well, and everything works.

What replacement parts should I have on hand, or if I want to do an extended trip?

I'm thinking bean can, coils, spark plug caps, voltage regulator. I'm running all these original parts without a problem.

Your thoughts?

how far are you from a supplier/ dealer with airhead parts. long trip plugs and wire, points, condenser voltage regular, carb diaphram and bowl gasket and a credit card and a airhead member book

Ignition issues:
Install new plugs and ht wires before leaving instead of carrying spares.
Coil, beancan and ICU failures are unpredictable so you either carry spares or leave them with a friend who can ship them to you fast if you need them. For a price you can courrier stuff from anywhere to anywhere in 24 to 48 hours.
Older style Harley coil will work in a pinch.

Fuel supply issues:
Carb rebuild kit, throttle cables, gas hose, throttle return springs
Again, do all this before you leave to avoid carrying spares.

Charging issues:
rotor, stator, diode board, voltage regulator
(keep in mind that the cheapest Walmart car battery, hotwired in and strapped to your seat, will get you well over 1000kms on a full charge (or much further if you disable your headlight)

Engine/Mechanical issues:
If it's running good when you leave, it will probably continue to do so for tens of thousands of miles.

BEWARE! THE 247 AIRHEAD ACHILLES HEEL: The shifter pawl spring can (and I can personally guarantee that it eventually will) leave you stranded, stuck in whatever gear you are in when it breaks. You can't replace it on the side of the road, the transmission has to be opened. You need a special tool (puller) to remove the trans output flange. Always carry a spare spring, so, worst case scenario, you have to get towed to a BMW repair facility, at least you'll have the part if they don't. I've replaced dozens of these over the years on towed in bikes. Mine has broken twice, without warning, at approximately 200,000km intervals. The first time I was about 30kms from home, stuck in 3rd gear, the second time was about 3kms from home, stuck in 2nd gear. Lucky me. I now replace it every 100,000kms to be safe. There is theoretically a way to stick a bent wire TOOL in the oil fill hole of the transmission to move the selector arm and select a different gear to get you home. It's better to be stuck in 2nd or 3rd gear than to be stuck in 1st, 5th or neutral. A pre-bent wire TOOL for this purpose is available on the internet. I tried this TOOL on a open transmission on the bench, and was not that successful. more info here: http://bmwmotorcycletech.info/emergency ... g-tool.htm

viewtopic.php?f=17&t=9242&hilit=bob+sipp



I wasn't stranded but a leaky neutral switch will coat the left side pdq. Doesn't take up much space either.

Charlie, show us your tool! Er, the one you put in the box, er tranny, er transmission. It's great!

My recent trip of 2,000 k's over four days was a little different to the usual in that there was no camping or cooking.
So that meant a greatly reduced requirement for stuff. Not being comfortable about riding a bike with not much stuff stacked on it, I decided to make up for it by carrying a ton a spares. A good idea seeing there were four '81 RS's.

I took a beancan, ecu, coil, rotor, diode board, diaphragms, clutch cable, throttle cables, wheel bearings, front tube, fuel hose, spark plugs, ht lead, jb weld, engine tyre pump, co2 cartridges, 1/4 oz dope, mini jump start pack, copper wire, etc, etc. The only thing I used was the copper wire.
The only thing I didn't take was a 5" rock, but luckily I found one close to the bike when I needed it.
Gonna take a rock next time.

Here you go:



The little notch is a guide to insertion depth. Coat hanger wire is perfect, in case you can't find a fence to cannibalise.

Here's a vid showing it in use: https://www.youtube.com/watch?v=AeDuO6m ... e=youtu.be

It has been successfully tested with a kick start box too.

Maybe I'll make one like that and practice using it, just in case.

ME109 said

I took a beancan, ecu, coil, rotor, diode board, diaphragms, clutch cable, throttle cables, wheel bearings, front tube, fuel hose, spark plugs, ht lead, jb weld, engine tyre pump, co2 cartridges, 1/4 oz dope, mini jump start pack, copper wire, etc,

In my experience, cables and wheel bearings give tons of advance warning before failing and 1/4 oz. might not last the trip. It will be legal here starting October 18, to carry 1 oz... You didn't mention Zig-Zags and a BIC.

FYI - JB QUIK is very similar to JB WELD, but hardens in minutes, not hours.

Below is what is always in my bike, not shown are tubes, front and rear, for my GF's bike, that will also work in MY tubeless tires should the need arise.

Apologies, I should have said jb kwik, that's what I have. Normal jb weld as you say takes way too long to harden.
It's ok for some situations but not if you're stuck on the side of the road.
I forgot to mention that I carry a mini propane torch and solder as well. First time I ever took it, I used it to solder the brass lug on the main power wire at the battery. It broke off on a dirt road in the middle of nowhere. Bike ran fine with the disconnected cable until I slowed to low rpm and it stalled. Didn't take long to find out what was wrong.
No damage to electrical system.
Zig zags and Bics (multiple) are the first thing on the check list. Also learned not to put all my eggs in the one basket.
I've lost a couple of baskets over the years.

This is excellent. Than you! Glad I asked!