Agree entirely with what you say but we had "professionally trained works mechanics" looking after the bikes and they still broke down more times than the BMW! On the Commando at slow speeds we had to change the spark plugs every 20 miles and on the Trumpets it was a pint of oil per 100 miles . Plus we had 1/2 day per week for maintainance tasks The R75/6 and R80's were a revelation
Dieseldog - I too was riding in those days, but I truly don't remember anything as bad as this. In fact I don't remember many "breakdowns" as such. What we did have was a daily routine of checking the bike over, & a constant need to adjust or tighten.
A pint of oil in 100 miles; must have been running like a two stroke.
The R75's that followed were indeed a revelation, in that it was a case of check the oil level, check the tyres & go. I was so impressed that in 1978 I managed to fund the purchase of an R75/6 & I've been a "BMW man" ever since.
I've even got my version of that lovely Interstate in a black R1150R. Big torquey twin, with modern brakes & electrics; on a summers day I love it.

