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Author Topic: cycle hop up 1974  (Read 1874 times)

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Offline BPellerine

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cycle hop up 1974
« on: December 19, 2013, 06:38:20 pm »
wish this was still around monthly!

225 hp ???


weber on a 450 anyone?

bearing upgrade rc in74

Muldoon frame bike in rc shop
drag star bike
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1978 CB 750K ard and webers
another anfob

Offline 754

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Re: cycle hop up 1974
« Reply #1 on: December 19, 2013, 08:20:18 pm »
Nice find, should print up that Weber stuff.
The con rod on right, is it MTC or Superrod?
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Maker of the WELDLESS 750 Frame Kit
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Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline cbr954

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Re: cycle hop up 1974
« Reply #2 on: December 19, 2013, 08:46:24 pm »
I was just looking at that magazine today from my dads collection going back to the 60's  I had to look again because the article is about RC Engineering but just mentions it as a forged alloy rod, definitely not a Golden Rod.
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03 CBR954RR, 72 750 chopper(970cc
F2 head), 2017 CRF450R, 2001 CR250R, 72 CB500, 79 XR250, 04 CRF50,70's soon to be rebuilt cb750 drag bike.

Offline BPellerine

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Re: cycle hop up 1974
« Reply #3 on: December 20, 2013, 11:06:51 am »
they also mention that they used to weld the beams up on the stock rods so they were solid!says they were very heavy but indestructible!they would use other peoples stuff if it was considered the best at the time so rods could be mtc.could get an exhaust ard and worked head for 300 back then or so it says in mag!bill
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1978 CB 750K ard and webers
another anfob

Offline Tintop

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Re: cycle hop up 1974
« Reply #4 on: December 20, 2013, 11:43:38 am »
Quote from: 754 on December 19, 2013, 08:20:18 pm
Nice find, should print up that Weber stuff.
The con rod on right, is it MTC or Superrod?

The Weber stuff looks like the standard descriptions found in Weber books.  Would be interesting if they gave some specific application jetting though.
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1977 CB550/4 Cafe - Speed Warrior / BOTM 03/11
1980 CB750F (project)
Whittaker GBF Vintage Racing Sidecar (XS750 power) - ITG / 151's / CMR Racing Products (SOLD)
1976 CB400 SS - stock / BOTM 04/11 (SOLD)
1973 CB750 K - basket case (SOLD)
77 CB550 Cafe build
550/750 Filter Thread
Sidecar Rebuild Thread

Offline BPellerine

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Re: cycle hop up 1974
« Reply #5 on: December 20, 2013, 05:31:21 pm »
brian they are very vague about jetting etc,just that they thinkthe f7 tube is most suited to motorcycle use they don't say why but that was 1974.bill
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1978 CB 750K ard and webers
another anfob

Offline Tintop

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Re: cycle hop up 1974
« Reply #6 on: December 20, 2013, 08:26:20 pm »
I'm currently using an F11 which gives some top end richening, leaner off idle, and initial accel.  The F7 would give basically the reverse which would be more suited to a street motor.  That would be my take on it.  Interesting.
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1977 CB550/4 Cafe - Speed Warrior / BOTM 03/11
1980 CB750F (project)
Whittaker GBF Vintage Racing Sidecar (XS750 power) - ITG / 151's / CMR Racing Products (SOLD)
1976 CB400 SS - stock / BOTM 04/11 (SOLD)
1973 CB750 K - basket case (SOLD)
77 CB550 Cafe build
550/750 Filter Thread
Sidecar Rebuild Thread

Offline BPellerine

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Re: cycle hop up 1974
« Reply #7 on: December 21, 2013, 08:01:21 am »
just thought it was cool old stuff to see.bill
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1978 CB 750K ard and webers
another anfob

Offline Big Jay

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Re: cycle hop up 1974
« Reply #8 on: December 29, 2013, 05:22:16 pm »
The rod in the photo is an MTC.
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Offline EnginebyAdam

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Re: cycle hop up 1974
« Reply #9 on: December 31, 2013, 01:00:59 pm »
I bet that was pulled from the big stack of mags in the closet hey BPellerine ;) My stack is mostly The Horse :)

IMO that time produced some of the most impressive engines both motorcycle and automotive. The bike engines were more interesting of course, but a lot of cool techniques and technology came around then.
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Better Rodded Than Rotten

Offline BPellerine

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Re: cycle hop up 1974
« Reply #10 on: December 31, 2013, 03:29:54 pm »
regretfully I started collecting old stuff again after a 15 year layoff from bikes .I had a lot of cool stuff now long gone.starting over is HARD.bill
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1978 CB 750K ard and webers
another anfob
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