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'66 Honda S90

S

steve murdoch

Forum Guru
Past Site Supporter
The bits back from plating so now it is time to assemble this mostly '66 Honda S90.
The old literature says these bikes were highway legal.
You would have to be nuts to take this tiny, 180#, maybe single digit horsepower bike on the highway.



 
Highways were different then. People actually paid attention while they drove.

That's really going to look great!
 
Looking forward to seeing this...Last year I found an old S90 manual in my dads garage, and spent some time with it.....and became interested in the model...
 
I'm jealous, I always coveted one, as a c110 owner.
And, yes, they are legal on the road.
 
That was the first for me too if you don't count my Clinton powered minibike that my Step Dad and I built.

Eight horsepower and they claimed a 64 mph top speed. I do remember seeing 60 on mine, but is was downhill. ��
 
A red '65 was my first bike back in '70. Sold it to a kid who beat it to death.
 
Wow, very cool. Growing up in the tiny town of Otego, New York, there was a distinct timeline of motorcycles coming to town. Jack Smith had a 50cc, which didn't seem like a motorcycle. His brother Dick bought an S90, which seemed like the first genuine motorcycle. Then Chuck Robertson got a Big Bear Scrambler (305), the first bike I rode on. Then Dick Wayman spent a summer in Greenwich Village and came back with a weirdly chopped Bonneville........

But the S90 was the first big bike.
 
Having ridden one before acquiring this one i know there will be no "blasting up steep slopes briskly" as it mentions in the ad.
At 2-up riding that would be 4 horsepower per person.

The highlight of my project is a nos exhaust pipe that a buddy found at Mid-Ohio this past summer. There are many repros around but the oem exhausts are very difficult to find.

 
Hey Steve might be quicker then your CBX you never know, lol, it will be nice when your done I am sure , Happy Restoring New Year,Brian
 
Funny how such a small bike can kick your ass.
The parts for this project were assembled over the years from numerous sources and bikes. Should have researched a bit deeper because i have since found there are many differences from year to year and model to model even though they look essentially the same.
The search will continue for a couple items.

 
Show some detail on the CBX sometime. The single sided swing arm and wheels on the stock looking bodywork is so cool.
 
That's really neat! One of my first bikes was a '65 S90; my brother and I traded off trail riding between that and a Kaw 100. After I performance tuned the S90, it would see 65 on the straight and level.

I'm going through a '67 CL90 now. Riding it is like going through a time warp.

Finally - there are longer duration/higher lift cams out there - along with O/S pistons which take the little bugger to 100cc. Living at 5300 feet, there's few beans left to lose on these little bikes due to altitude.
 
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