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  1. #1

    Default CB750 DOHChopper

    I had written out a cool story about my bike but then my computer crashed while trying to upload pictures!
    I'm going to try again but without the story.
    Here's the pictures, and I'll try tell the story of my 1980 CB750 Custom as I hardtail/ruin it
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  2. #2

  3. #3

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  5. #5

  6. #6

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    Here it is wearing its new frame...
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  7. #7

  8. #8
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    Default

    Sweet

  9. #9

    Join Date
    May 2012
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    10

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    Cool! I thought I was the only one who wanted to chop a DOHC instead of giving it the "cafe" or "brat" treatment, which kinda sucks for me... sweet ride!

  10. #10
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    They're awesome motors

  11. #11
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    Default

    What kind of hardtail is that?

  12. #12

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    Here's a couple shots of how the bike is looking now.
    I've got the rear fender and sissy bar 90% done.
    You can see how the mounts were all done and welded onto the frame.
    There's enough room between the rear fender and the engine for a gas can or something too...

  13. #13

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    Here's another shot of the frame.

    So once all the welds on the sissy bar have been cleaned up, I'm thinking of getting the sissy bar chromed.
    At the same time, I think I'll get my electronic box chromed...

  14. #14

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    There's the electronic box I made.
    I saw some guy a while ago take an old harley horseshoe oil bag and turn it into an electronic box for his CB.
    Thanks for the idea!


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    Here's everything tucked away inside.
    I took a cutting wheel to the original battery box and stole mounts for things like the flasher relay, starter solenoid mount, those two spark unit things...
    The regulator/rectifier mounted to two bolts that held everything together on the original box.
    So on this one I just drilled two holes through the oil bag, welded them up, and grinder them back down from the outside.
    Here's a picture of the two holes...needs to be filled and ground one last time before chroming.
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    If you look at the top of the box you can see a hole on either side where mounting bolts go.

  15. #15

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    Blurry picture but there's one of these tabs welded on either side of the frame for where the electronic box mounts.
    I don't think I showed it in the pictures, but I've got the gas tank mounts welded into the back bone now as well.

    Parts used so far:
    Frame voodoo vintage
    very helpful guys, answered all my questions until after they had my money. I asked if there was any tricks to mounting the frame. Any thoughts on bracing the frame prior to cutting...no responses. But the product is very nice and I'm happy with it.

    I've got TCBros forward controls on there too with the universal linkage.
    Various threaded bungs and tabs from TCBros
    Haifley bros DIY sissy bar...biggest one I could find
    TCBros kickstand not yet mounted
    TCBros axed 2.2 gallon tank w/ all the fixtures.
    TCBros brake pivot

    This weekend I plan to:
    Finish up the electronic box and sissy bar, get them off to chrome guys
    try and tackle connecting the forward controls to the shift lever as well as connect the brake on.
    make a trip to the metal store and start on the king and queen seat.

  16. #16

    Join Date
    Jul 2014
    Posts
    2

    Default

    love the DOHC750s had 4 or 5 of em. i use the dynojet carb kit at 5280'...screams.
    guy i know has a plunger frame im trying to get. collected some +6 forks, oil tank for same idea ;-), yellow lense headlight off a '40 something firetruck- love collecting this stuff, and a set of spokes off a k model (sent it away with comstars haha) Click image for larger version. 

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    Last edited by enygma; 11-10-2015 at 10:54 PM.

  17. #17

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    Had a bit of time on Wednesday to get a head start on the weekend.
    I managed to connect the forward controls on the shifter side by bending the stock shift lever into an upside down U in a vice.
    Also started on the seat. Made a rough template out of paper, and then cardboard...I'll get some metal on Saturday and get a pan made up.
    What else did I do...I cleaned up the sissy bar a bit, but still need to grind it down in places before chroming.
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  18. #18

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    Here's the shifter side forward controls connected.
    You can see the extra long bolt going through the engine mount...that needs to be shortened...
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  19. #19

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    Now here's some shots of the bike with the full cardboard king and queen + gas tank
    I gotta say...I love the stance on this thing!
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    I think I'll probably ditch those fork boots that I spent so long looking for

  20. #20

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    it's been a while and it's almost done.
    shake down ride was las tweekend - everything was great.
    everything has been taken apart, engine comes out tonight, frame gets painted on the weekend and then I start putting it all back together again.

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