Honda CB750 pre -prototype

They must have used an entire CB450 drum brake front end and maybe even a CB450 gas tank - it looks narrower than the later production models.
 
TK4 said:
They must have used an entire CB450 drum brake front end and maybe even a CB450 gas tank - it looks narrower than the later production models.
Click to expand...
There's something funny with the side covers too - no vents like the 1969s and 1970s. Likely one off, hand made.
And there appears to be some kind of metal bar running between the frame rails just above the oil filter. I wonder what that is about ?
 
TK4 said:
They must have used an entire CB450 drum brake front end and maybe even a CB450 gas tank - it looks narrower than the later production models.
Click to expand...
I`ve never seen that photo. Could be a 450 front end, I think that`s a 750 tank but there`s lots different than what made production. The oil filter housing, carbs and airbox, sprocket cover, side cover and badge, pipes, horn, taillight and obviously tires are all different. The entire engine looks a little "off" too.
 
TK4 said:
There's something funny with the side covers too - no vents like the 1969s and 1970s. Likely one off, hand made.
And there appears to be some kind of metal bar running between the frame rails just above the oil filter. I wonder what that is about ?
Click to expand...
Is that a bar or just the engine case? Could be the angle and light of the pic.
 
Glenn/RZ500 said:
I`ve never seen that photo. Could be a 450 front end, I think that`s a 750 tank but there`s lots different than what made production. The oil filter housing, carbs and airbox, sprocket cover, side cover and badge, pipes, horn, taillight and obviously tires are all different. The entire engine looks a little "off" too.
Click to expand...
It's one of 3 prototype pre-production machines built for the (1968 ?) Tokyo Motor Show. I've been told that none of them exist any more (likely crushed). :confused:
 
TK4 said:
It's one of 3 prototype pre-production machines built for the (1968 ?) Tokyo Motor Show. I've been told that none of them exist any more (likely crushed). :confused:
Click to expand...
The story was that the 500GP bikes were often crushed at season end. Obviously some were awarded to riders, Rainey, Schwantz, Lawson, Roberts etc. Some slipped through the cracks,...had to have. Think someone, somewhere has one of those pre-CB 750`s? And you should check out the Avro Arrow I`ve got in boxes in the garage. 😜
 
Glenn/RZ500 said:
The story was that the 500GP bikes were often crushed at season end. Obviously some were awarded to riders, Rainey, Schwantz, Lawson, Roberts etc. Some slipped through the cracks,...had to have. Think someone, somewhere has one of those pre-CB 750`s? And you should check out the Avro Arrow I`ve got in boxes in the garage. 😜
Click to expand...
I know where most of Mike Taylor's Kawasaki ZX750RR is, but I'm sworn to secrecy.
 
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TK4 said:
It's one of 3 prototype pre-production machines built for the (1968 ?) Tokyo Motor Show. I've been told that none of them exist any more (likely crushed). :confused:
Click to expand...
If one of them escaped, it sold yesterday for $285 Grand at Mecum auction. If you`re out there lurking TK4 you likely know anyway.
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