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This is a discussion on about to start 1st project within the General forums, part of the Caferacer.net Forums category; Whats your opinion on a CX for a newbie?...

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  1. #11
    Junior Member thunderzy's Avatar
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    Whats your opinion on a CX for a newbie?

  2. #12
    Senior Member raven's Avatar
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    the dohc 750 isnt a particularly bad bike... its just not gonna be a cafe racer... They are comfortable fairly quick bikes that do well with low bars and a different seat. They are heavy. I think the engine weighs almost as much as a entire cb350! With no fenders, seat, lights, battery (no it wont run without one nor does it have kickstart capability) it still weighed far in excess of 400 pounds. A K model can lend a rear spoke wheel and 82 C models had dual front discs. But you cant have spokes and dual front discs without using a hub off of something else as the DOHC K hub can only take one disc. Dual piston calipers are an easy upgrade from a cb900f (and C i think) (just make sure you get hangers from a fork without the antidive, calipers and hangers from a vt700 shadow work too). Stopping is still underwhelming but it will get the job done. Best thing is to swap on CBR forks and be done with it. The frame is weird beneath the tank and pretty much a tank has to be made for that frame or it doesnt fit.

    The engine is somewhat maint. intensive. Unlike a SOHC 750 with adjusters, every valve adjustment costs money. Sometimes you can move shims around to get tolerable clearances, usually you end up having to buy atleast two. Either make friends with someone at a shop, order the shim starter kit, or be prepared to wait while shims come in the mail. You also need the tool to depress the bucket to remove the shim. And a micrometer to figure out the thickness of the shim you just removed. And a notebook and pencil. And you get to do this...alot...or else you get to remove the engine, then the head and pull 16 tiny valves and relap them and replace the burnt one(s).

    All that being said I still like mine, alot. It is not a cafe bike, I may one day put a solo seat (if i ever find something that fits with that tank might just build one) but i will never call it a cafe bike. A fun bike, yes, worth it, yes but i have found i like working on bikes as much as riding them.


    A CX eh...they are reliable (mostly, cams tended to wipe out in some) heavy liquid cooled bike. Definately less maintenance (IMHO) than the C but they are just strange. I have a love hate relationship with their looks. Sometimes I love the cylinders hanging out and the uniqueness of the design, other times they are gawky. If you search the board there is a very neat bike on here (i forget whose it is) and I think if you get a decent running one its certainly a viable project. Dont expect to build a groundbreaking wonderful perfect so clean you can eat off it bike the first go round. A dirty running fun bike that you can enjoy and work on trumps a pile of parts in the corner.

    Oh and I think the frames between a C and F are pretty close to the same. The C has this dip where the rider seat is with the pillion up a curved section that ends in the rear fender/grab bar mount. I think to put a solo tail on one you would need to space this a bit.
    Bike:
    Buell X1
    Honda S90 (box of parts)
    Honda CB750C (runs)
    The Others (mostly rolling wounded)

    My collar may be a little frayed, and maybe I need a shoeshine. But nobody\'s got a mortgage on my soul. I own it. Free and clear. -Phil Lovecraft

  3. #13
    Senior Member Geeto67's Avatar
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    Raven,

    C and F frames are different. Put one on a scale some time, it will shock you. They are hella different where the pegs mount as the F uses alloy plates to mount the foot controls and the C used steel welded to the frame (some have smaller alloy plates but are not interchangible). Also the F can be considered a cafe racer a la AMA superbike replica. Stock the bodywork was modeled after the tracy bodies of the 1970s.


    I personally Hate CX500s just because they used to litter the NYC motorcycle landscape. There are people who like them though and a couple have built interesting...ahem...cafe bikes out of them. The problem with a CX500 is there are certain things that go bad which are not easy fixes (require striping the motor down to the block) and if you don't know what you are looking at it is really easy to buy a lemon of one. I wouldn't buy a project cx500, but maybe if a really really nice one came along I could be persuaded to ride it... for like an hour....and not set it on fire.
    Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.
    - Samuel Beckett
    A tool is just an opportunity with a handle
    - Kevin Kelly

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  5. #14
    Senior Member raven's Avatar
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    yeah I knew about the peg issue, its pretty impossible to mount F parts on there. It has weird (read ugly) passenger peg mounts as well. C's are really alot more trouble than its worth to make into a cafe bike, which is why i gave up on it as a cafe bike. But it isnt a bad ride with the low bars (not clubmans, superbike bars which are as low as you can go without dealing with the peg issue in a very spark intensive way...) and one day I will probably put a solo seat/tail on it. But it still wont be a cafe bike IMHO, as it can never be distilled to its essence so to speak.

    the cx's look like an absolute bitch to wrestle the engine in and out of! kind of like the square peg in a round hole arrangement. Wasnt it the cam or chain or something in that area that died on alot of these? I wouldnt mind having one as a beater, but it would have to be very very very cheap (like it runs and stops and doesnt burst into flames for <$200 or atleast doesn't burst into flames at inopportune moments <$175...)


    Bike:
    Buell X1
    Honda S90 (box of parts)
    Honda CB750C (runs)
    The Others (mostly rolling wounded)

    My collar may be a little frayed, and maybe I need a shoeshine. But nobody\'s got a mortgage on my soul. I own it. Free and clear. -Phil Lovecraft

  6. #15
    Senior Member raven's Avatar
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    duh i just looked at a pic of the cx, it looks like the engine is part of the frame and doesnt have a tube beneath it. so it probably isnt so bad to get out!
    Bike:
    Buell X1
    Honda S90 (box of parts)
    Honda CB750C (runs)
    The Others (mostly rolling wounded)

    My collar may be a little frayed, and maybe I need a shoeshine. But nobody\'s got a mortgage on my soul. I own it. Free and clear. -Phil Lovecraft

  7. #16
    Senior Member Geeto67's Avatar
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    it is also pushrod and doesn't have a cam chain. IIRC the water pump on these shits fairly regularly and can cause the bottom end to wash out the bearings if left unchecked. Also the motor had to come apart to do the water pump. I could be wrong on this though.
    Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.
    - Samuel Beckett
    A tool is just an opportunity with a handle
    - Kevin Kelly

  8. #17
    Moderator joe c's Avatar
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    dohc cb750s can make for wicked cafe style bikes. though i think the sohc ones make a better sound at full tune. remember, these were superbikes in the day. its not going to look like a t120, but it has a style all its own. like geet said, look for an f. those c models are ugly meh.

    jc



    not a pretty boy honda rider... i\'m fag on a TTR

  9. #18
    Senior Member kenessex's Avatar
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    quote:Originally posted by Geeto67

    it is also pushrod and doesn't have a cam chain. IIRC the water pump on these shits fairly regularly and can cause the bottom end to wash out the bearings if left unchecked. Also the motor had to come apart to do the water pump. I could be wrong on this though.
    The sad thing is that the CX actually does have a cam chain that had a problematic tensioner for the first couple of years. It required pulling the motor and taking the back cover off to get at the chain and tensioner. There was a factory recall and I believe after it was done, the mechanic was supposed to put three punch marks after the engine number in a triangle pattern to show the work had been done. Some of them do have a problem with the cam and lifters going out. I never figured out why some go and some don't. They also have a tendency to leak coolant from the metal pipe that goes to the radiator and sometimes the mechanical seal in the water pump would go out. Really not a lot of issues for a 30 year old bike.

    Ken

    P.S. they are ugly
    WERA 119
    CCS 119
    CRA 119
    AHRMA not anymore
    \"Think twice before you speak, and then you may be able to say something more insulting than if you spoke right out at once.\"
    Evan Esar
    Newbies, Geeto and Tex (Bye Tex)hate me!!

  10. #19
    Senior Member raven's Avatar
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    yup

    but even after getting better used carbs, a fork swap, an NOS tank, new tires, and about a dozen small things, i am still <750 in on mine and it now always starts and i havent had to push in awhile
    Bike:
    Buell X1
    Honda S90 (box of parts)
    Honda CB750C (runs)
    The Others (mostly rolling wounded)

    My collar may be a little frayed, and maybe I need a shoeshine. But nobody\'s got a mortgage on my soul. I own it. Free and clear. -Phil Lovecraft

  11. #20
    Senior Member spacmanspif300's Avatar
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    ken's got 4 stars, everybody. almost didn't recognize 'im.

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