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SOHC.co.uk Forums => Other Bikes => Topic started by: MarkCR750 on May 27, 2017, 07:15:55 PM

Title: CBX1000 prototype
Post by: MarkCR750 on May 27, 2017, 07:15:55 PM
Just found this old photo of the CBX1000 prototype, evidently taken in 1976, looks so much better than the model they eventually produced IMO.
(http://i1269.photobucket.com/albums/jj582/POR1983/IMG_0972.png) (http://s1269.photobucket.com/user/POR1983/media/IMG_0972.png.html)j
Title: Re: CBX1000 prototype
Post by: K2-K6 on May 27, 2017, 07:48:06 PM
Interesting,  looks like a mock up rather than prototype.

Appears to be a 750 K7 with a modelled cylinder and head stuck onto 750 crankcase, number one conrod would be going into the alternator!

Good to see early design ideas compared to however they evolved.
Title: Re: CBX1000 prototype
Post by: Laverda Dave on May 27, 2017, 10:17:34 PM
Great photo & would be good to see some more prototypes.  I remember seeing one in the past of the CX500, that did look odd!
Title: Re: CBX1000 prototype
Post by: Woodside on May 28, 2017, 07:46:12 AM
Cx prototype
Little v engine in the cb200
Title: Re: CBX1000 prototype
Post by: MarkCR750 on May 28, 2017, 08:32:46 AM
Great photo & would be good to see some more prototypes.  I remember seeing one in the past of the CX500, that did look odd!

How about this.....

http://www.totalmotorcycle.com/motorcycles/2016/2016-Honda-CB-Four-Prototype.htm
Title: Re: CBX1000 prototype
Post by: hairygit on May 28, 2017, 09:38:09 AM
Nice for something modern, but a few things just look so wrong! Clocks are too small, and a cable from front brake lever to master cylinder just looks "wrong" the master cylinder needs to be on the bars, using a cable just leaves more problems, stretching/getting stiff/seizing. And worst of all, NO kickstart!

Sent from my X6pro using Tapatalk

Title: Re: CBX1000 prototype
Post by: Tomb on May 28, 2017, 01:05:37 PM
I don't like the solid discs, the clocks are Ok for me, a bit like the early clocks.

And defo need a kickstart. I still use mine on my XS1100
Title: Re: CBX1000 prototype
Post by: K2-K6 on May 28, 2017, 04:30:35 PM
Didn't the SS50 and the CB200 have entirely cable operated discs as production models?
Title: Re: CBX1000 prototype
Post by: hairygit on May 28, 2017, 04:50:20 PM
Yes they did, along with the CB100N and CB125T 1+2 models What I don't like is the mix of cable and hydraulics, just more bits to go wrong!

Sent from my X6pro using Tapatalk

Title: Re: CBX1000 prototype
Post by: AshimotoK0 on May 28, 2017, 06:12:58 PM
CB750 early prototype sandcast on test in 1968 ...... Lots of CB450 parts on it!

[attachimg=1]
Title: Re: CBX1000 prototype
Post by: MarkCR750 on May 28, 2017, 06:27:30 PM
Yes they did, along with the CB100N and CB125T 1+2 models What I don't like is the mix of cable and hydraulics, just more bits to go wrong!

Sent from my X6pro using Tapatalk

And in the case of the CB200 which I owned in 1980 I can confirm that they didn't work very well at all 👀
Title: Re: CBX1000 prototype
Post by: Johnwebley on May 28, 2017, 07:24:54 PM
Yes they did, along with the CB100N and CB125T 1+2 models What I don't like is the mix of cable and hydraulics, just more bits to go wrong!

Sent from my X6pro using Tapatalk

And in the case of the CB200 which I owned in 1980 I can confirm that they didn't work very well at all 👀

 I seem to remember 70's BMW bikes had a cable to the mastercylinder ,then hydraulics to the calipers
Title: Re: CBX1000 prototype
Post by: steff750 on May 28, 2017, 09:02:51 PM
 ;) yes i think the cbx1000 is just a mock up there are lots of cb750 bits on it ,like the cb750 prototype had lots of cb450 bits on it. as you would expect; this reminds me of the honda cb750 prototype with a cb450 half chrome tank on it.the owner admitted years later that it was a fake
and closer to home a guy told me 30 years ago that his brother had the first cb750 in wales and it came with a drum front brakes lol i have six the only one i have with a local reg number was sold in 1971 lol as you know the big shops in england got them before any body else in the uk
in fact my first cb750 i bought locally the owner then from swansea had too go to london to buy it.food for thought init  ;)
Title: Re: CBX1000 prototype
Post by: Tomb on May 28, 2017, 09:50:07 PM
I seem to remember 70's BMW bikes had a cable to the mastercylinder ,then hydraulics to the calipers

And frighteningly so did the Z1R Kawasaki :-\
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