As a response to a previous poster who said that the first thing you notice with a shaftie is no noise (I'm sorry I forgot who you were):
sure, there's no chain noise, but there's that irritating and ever-changing shaft noise and many other things.
Most of the bikes I had had a shaft. As others pointed out, it's good for maintenance. Well, mostly.
Why?
Because:
Shaft can suck. Um, no pun intended. It can leak oil from any place imaginable while there is no such danger with a chain. If something goes wrong (like oil leak, strange noise,...) you have to take it all apart and it's alot of work.
Noise is another thing... you NEVER know if something's wrong until it's too late, because the noise is so grating, loud and it's constantly changing the pitch that it masks any problems with the final drive or anything else. I always ride a shaftie with that thought in the background wondering whether everything's alright or not. It was also hard to get used to it. And it's irritating.
The shaft is also heavy and messes up the bikes balance.
Oil leakage... it can leak where it connects to the engine. It can leak where you pour the oil in. It can leak where you let it out. It can leak where the wheel installs on it... which means a lot of chances of something going wrong. Also a lot of work if you want to check it out because you have to take the wheel off and then it's hard to get to the seals that are supposed to hold the oil in.
And when it leaks oil, you are perhaps screwed. Because the oil will leak down to the wheel and if you don't notice it soon enough it will leak onto your tire and down it onto the ground, slicking it. And if you don't know the oil's leaking thentaking a turn will end badly for you because you'll have oily tires.
The seals... they have to be changed occasionally and they can rupture. You don't have that with chain.
There's also a LOT more parts in a shaft drive, from bearings, gears, seals, nuts, etc. and with every added part the chance of a break down is increased even more. More parts... more chance of a breakdown.
To make it a little more familiar to any ex-or-current-military... M-16 rifles have a lot of moving parts. They tend to break down more than their opponents because of that. M16A1 were particularly bad. AK-47 on the other hand had a lot less parts and were legendarily reliable. Though not as accurate as M-16, but you knew it wouldn't jam on you in a fire-fight so easily. A lot of parts... more chance of a breakdown.
Another example... BMWs, who's owners always like to expound so much on their reliability, break down. A lot. The R-GS enduro series are especially notorious for their shaft drives that break down a lot.
Less parts... the less chance of a breakdown.
I have no real experience with a chain driven bike, the GSE will be my first chain bike so it'll be interesting to see the difference.
Oh, yeah, if anyone's interested I posted pics of a newly-restored 1978 1000e on the thread "
'78 GS1000E restoration project", and appreciate comments.
I have off-topic questions though: what kind is the foam used in the seats? I can't comfortably reach the ground with the soles of my feet (have to stand on tip-toes) and would like to fashion a thinner seat. Some moron cut a square hole in teh current foam to just below the upper surface so I can't just edit the current foam unless I want to sit in a hole.
Are steel-braided brake lines really that much better than rubber?
Also, what model was a 1000 D?