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congratulations, Moto nut, great job! but the saddle, is it a customization, or an American version? The exhausts of the GT550 in Europe are nowhere to be found, of an absolute rarity. I know 4 people in Italy who have been looking for them for years.
Paola (Italy)

Thanks, I didn’t really like the look of the fat seat and the taller handle bars, so I found a lower profile K&n style handlebar and a lower profile seat made by texavina, complete with new metal seat pan, perfect fit, as for the exhaust I may install a set of higgspeed expansion chambers in the future Just for fun....

I decided to start and run the bike this weekend, starts and idles great but when I ride the bike and it’s under a load I blow the main fuse (the only fuse) so I disconnect everything except what is needed to run the bike, (all lights, electric starter, horn, gauges) starts and idles fine, but blows the fuse under load while riding, what do you think voltage reg. or?

I'm going to guess that it's not dumping the excess voltage to the frame. Check the regulator ground.

Lot's of assumptions in that statement considering we're talking about a Suzuki GT550.

Incredible restoration. How is it to ride?

Thanks, I went thru all grounds again with no success, put my meter on battery at high revs, pulls 14.8v , amp probe on main fuse at high revs is 2.3 amps....

Is is still popping the main while riding hard? If so, then I'd surmise you have an intermittent short somewhere that the vibrations are causing. Start wiggling the harness in places to see if you can pop it. I would think it would be between the battery and the fuse panel or some other line that doesn't involve the fuse panel (solenoid, starter).

Keep in mind, I am no electrical genius here. Just a junkyard dog sniffing out stuff.

I’m pretty much down to that, I’d piss on a spark plug if it would do any good

Please film that. You could cement your place in the forever.

Found it, in the headlight bucket there are two sets of 6 pin connectors, 1 blue set and 1 tan set, well when I reassembled the bike I went blue to blue and tan to tan, wrong! Once corrected the bike rips with no problems

Well that's counter intuitive. Glad you found it.

Well I’ve been putting a few miles on this project and I am very pleased with the result, no leaks, everything works as it should, I’m putting away the project tools away for the summer and enjoy the fruits of my labor till late fall, next up a Cb400f or rd400 or ?....

Ram Air. Genius.

This is such a lovely bike thank you so much for sharing it.

It also takes me back to the wonderful summer 1976, I was working at a local college with a group of great guys, one had a GT250M. Compared to my CB175 it was like a Ferrari to me. One day the owner rather stupidly agreed to let one of the other guys have a go even though he had never ridden a bike before.

The college had a huge car park which being summer was completely empty, hey what could go wrong?

After some initial tuition the guy was let loose. He gave far too much throttle and let go of the clutch, the bike reared up on its rear wheel and sped off. Still not to worry huge car park and all he will get it under control.

Except of course there was just that one tree on the edge of the car park.

It was like a a magnet, the more he wrestled with the bike the more it acted in a suicidal manner and headed for the tree. These things seem to happen in slow motion I can still see the bike weaving from side to side with the idiot trying to hang on.

Needless to say it hit the tree full on. The hapless guy of course completely unharmed, the bike a complete write off.

At the time I was horrified now it just makes me smile.

Thank you so much for your write up and the memory