I have just waded through 6 pages of mostly nonsense....so I guess I'll add my own nonsense if for no other reason than to change the tone from the usual bickering of how nortons are better than x bike.
When I was 16 I bought a 1973 Norton Commando. A yellow one. From an australian who I could barely understand. This was the early 1990s, and these bikes were kinda worthless at the time but it was british and what I could afford and wanted it badly. I affectionatly refer to it as the bike that ruined motorcycling for me. At parties I always tell the same joke "I was never in better shape in my life when I owned that bike because I pushed that mf'er everywhere". I sold that bike to someone who gave me a lift after seeing me broken down on the side of the Long Island expressway pushing it to an exit. I didn't touch another motorcycle for 4 years after that. It taught me every non bike specific hard lesson there is to learn about motorcycles all at once.
when I was about 21, I bought a 1975 cb750K. It was blue, and pretty, and was sitting at a shop, under a tarp, forgotton. I paid exactly half of what I paid for the norton and was riding it that weekend. Ironically it taught me almost the same lessons that the norton taught me but from the positive side of the coin. I still own that bike and I personally have put over 50K miles on it. Other than regular oil, brake, and tire service I have rebuilt the brake once, replaced the fuse box twice (once after I accidently set fire to it under a freak set of circumstances), put 3 batteries in it, and replaced one plastic side cover after the old one decided it wanted to liberate itself at extra-legal speeds on the highway.
What are these lessons I speak of?
1) Maintenance Matters Most. Despite sitting for 6 months the honda was well maintained and virtually stock when I bought it. Anything not stock was either not mechanical (seat) or a pretty good substitute replacement part (speedo from a different year/model honda). The Commando on the otherhand had been mostly maintained by a mad aussie who as near as I could tell couldn't afford to maintain a british bike and cut corners everywhere (more on that in a moment).
2) Previous owners are either your own worst enemy or your best friend. In the case of the Honda, I had been delivering radiators to the shop I bought it from for over a month. I saw the mechanics and how they worked on stuff, and kept their areas clean and put their tools away and were very professional. The bike's owner was forthcoming about everything and even told me exactly the reason he didn't ride the honda any more was he bought another bike and even let me ride his "new" bike (an airhead beemer). When I went to buy the norton the owner was lying on his back in the dirt, outside, under an alfa romeo montreal that was up on 4 jack stands. His tools were everywhere. They were dirty. This was a "professional" classic car shop and he is out working on a car in the parking lot on jack stands. That should have been an alarm ringing in my head. When the Honda previous owner serviced the bike he used factory parts because he could get them, or reasonably aftermarket parts. This is how he was used to working on cars (even old ones as he drove a 1975 2 door wagoneer everyday). The norton previous owner was used to having to bodge things because of lack of parts or lack of time to wait for parts, or lack of patience. The bike's wiring was all 3m connectors, badly crimped barrel connectors, and bits of what I can only assume was land rover wiring to replace broken sections of the original norton wiring. some switches didn't work and the tach and the norton owner seemed pretty causal about it like "oh well, it is to be expected". The front brake was sticking on the honda and the honda owner took the time to show me exactly how to service it both on the bike and in the manual. The real lesson I learned? interview the previous owner like you are hiring him for a job. It is ok to buy a crappy bike, but it is bad if misleads you to expect a good one when it is clearly not.
3) New Parts are always better than old parts, and aftermarket is not necessarily a bad thing. When I bought the norton the internet was not quite a thing yet. My local motorcycle shop was Ghost Motorcycles in Port Washington (I can hear the collective cringe already). They had been a norton dealer and had tons of spares in the back room. Old spares. Old lucas electrical spares. Old lucas electrical spares with potting that now resembled chalk. Thanks to brit cycle and other parts houses modern electrical bits were available for these bikes, but my only connection to them was through this shop that had a lot of old stock to sell me and no real incentive to hip me to the new stuff. So I replaced the wiring with an NOS loom, and two stators because the potting failed on the first one, and god knows how many other bits and bobs (including 3 lucas headlight bulbs, WTF was I thinking). My cb750? the dealer could get me every service item, my local indi shop could get me any aftermarket parts I needed and some used stuff as well.
4) Don't bandaid the problem fix it. What I should have done with the norton is rewire it completely. from scratch. with new solid state components. And taken the time to understand how to upgrade stuff. What I did instead was just replace the thing that was causing the immediate problem so I could get back to riding. This meant something else would burn up and I would be back to pushing the norton down the side of the road. I tried doing this with the honda but because it was in better shape it was readily apparent where most problems were and then it made sense to fix it.
5) If you don't know anything about what you are looking at, don't let your eyes and your heart make the decisions. A yellow norton is a cracking good looking bike. seriously, way good looking. Much better than my buddy's 1970 brg bonneville. And this one looked amazing. The chrome was nice, the paint was glossy and bright. All the evil was buried in the guts and I didn't even want to see it, I mean it glowed in the sun, how could I not buy it? I think I actually turned my pocket inside out pulling the money out because i could not get to it fast enough. The honda? by then I had learned my lesson and went over it with a fine tooth comb. it was pretty enough, but I thought an uncut loom with no 3m connectors was the most beautiful sight to see on a bike at the time.
there are other lessons, many of which I should just write into a book. Good stories too, esp the one about the famous journalist who kinda stole the norton rode it over a median and then abandoned it later on (a story I only tell when we are drinking out of honor and respect for said journalist). The moral? I am getting there......
for a long time I said I would never own another norton. I went on to own at one point 10 cb750 SOHCs. I still own about 5 plus real 970 CR750 race kit parts. But it was never the bike. At the end of the day these are all machines and the thing that makes them brilliant or suck is the people who touch them, use them, work on them. For anyone who says the cb750 is boring I say sometimes boring is nice. Sometimes it is nice to have a bike that works. Sometimes doing exactly what it was meant to do can be boring because there is no excitement and challenge of having to find a bike friendly gas station or fix god knows what. All this bull about the norton being faster or better handling or less reliable etc....it is bull, and it is old bull, and it is boring bull. The british motorcycle industry killed itself, the japanese just helped by making a marginally better product. and besides which, who cares? ancient history.
Unfortunaly I never learned my lesson, I have two nortons now, both projects, and am actually willing to forgive the original sinner '73 for coloring my opinion so negativley. But I will say this, it is nice to own other bikes to ride while I do these right this time. Besides, I have been lazy and could use the exercise....
there are no "bad" bikes, but there are lots of bad owners.