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  1. #1
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    Default cb500 Springer chopper front brat rear hybrid

    Greetings: I am bigjeff and I did a cb900c bobber build a while ago....it was friggin fantastic to ride. But alas - I grew tired of my new toy and sold it. The buyer traded me a dilapidated old 1972 cb500 frame with a 78 cb550 engine with a fury springer and an invader front wheel. What? A NEW TOY to fuck with! I am excited.

    So we begin on the saga of the cb500/550 springer chopper front- brat style rear hybrid. There is a reason I went with the swing arm and shocks in the back rather than go hard tail but I will explain that later.

    Here it is being pulled out of the storage shed. It was there for YEARS AND YEARS......rusted bad.

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    So what is the first thing to do? Why take it all apart of course.

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    Down to the frame - add new head bearings

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    Now I crack open the engine.

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    Parts EVERYWHERE!!!!

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    Last edited by bigjeff; 12-13-2016 at 9:18 AM.

  2. #2
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    A 78 550 engine with 72 500 carbs on it? WTF? Thanks Randy!! lol

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    Got new bars and a new tank.

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    New dual headlights. (I want this bike to be like the ones I saw in high school in the early 70s). Dual rectangles it is!

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    Chopped the rear fender:

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    Sparkly silver to freshen up the rusted wheels and new rubber and tubes of course:

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    Last edited by bigjeff; 12-13-2016 at 9:23 AM.

  3. #3
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    Rattle caned engine parts with ceramic engine enamel:

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    Fabricate seat area. The original frame was cut to add a king queen seat. It was way too low for me. I am tall and needed to go up. Filled it with aircraft style structure (which will be my electrical battery box under the brat seat. I also like brat seats cause' you can move around and keep monkey butt at bay:

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    Last edited by bigjeff; 12-13-2016 at 10:28 AM.

  4. #4
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    Default

    detail view of aircraft style structure. All the electrics and switches will go on this triangular enclosure which can be accessed by removing one bolt and lifting the seat out of the way.

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    Frame/seat/front is DONE!! Off to the yard for a photo shoot!!!

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    Side view of the chopper brat:

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    Ass View. I love asses.

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    Lights - camera - ACTION!!!

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  5. #5
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    Now I guess I need to work on the engine so it will do something but sit there and look pretty. Why not bore it out and put bigger pistons in there? A CB600!!!

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    Stuck the crankcase in the frame. Gunna build the top end in the frame. Easier to get it in that way IMHO. Sneak up on it one assembly at a time.

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    And last night - put the new rings on the new pistons and installed them on the connecting rods.

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    Well - that is all for now. Got to do some more work so I can take more pics.

    Later........bigjeff
    Last edited by bigjeff; 12-13-2016 at 9:31 AM.

  6. #6
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    Nice detail......


    Your to old for a brat bike......... LOL
    Last edited by Tattooo; 12-13-2016 at 9:32 AM.

  7. #7
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    Quote Originally Posted by Tattooo View Post
    Nice detail......
    Is the area in front of the seat with no padding for you to sit on????? And the big large cushy seat for a fat chick with a big ass?????? Since you say you like ass...
    Sure-----why not. lol I do like a big ass on a woman. Bigger the cushion the better the pushin' and all that. The flat portion will have the headlight on off high/low toggle switch and a ignition kill toggle switch. The ignition key on the left side triangle.

    This is a small bike. Only room for one. Like I said, I am tall so my ass will be right over those new shocks. I don't think I have ever seen a springer brat before - but I have now!

  8. #8
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    Quote Originally Posted by Tattooo View Post
    Nice detail......


    Your to old for a brat bike......... LOL
    Never to old for anything if you want to do it. I drive a tricked out firebird too. Going though my mid life crisis but I am ok with that. My dick still works so I am good.

  9. #9
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    here are some pics of the 1981 cb900c I redid - big bore kit in that one too. It screamed.


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  10. #10
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    Got the cylinders on last night. I lapped the valves already, plan to put the valves back in the head and install the cylinder head this weekend. Then.....rebuild the clutch!
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    Last edited by bigjeff; 12-16-2016 at 7:57 AM.

  11. #11
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    sweet

  12. #12
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    Quote Originally Posted by OleDirtyDoc View Post
    sweet
    Thanks Doc.

    Valves go in the head, then on with the cylinders and rockers/valve cover - and tuh duh: Engine is done. Just need a fuel and ignition system now. Hmm....I'll get right on that. Stayed tuned. :/

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  13. #13
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    Well, I guess its not as bad as that cb900...

  14. #14
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    I don't understand the gap in front of the seat... it just breaks the flow to me.

  15. #15
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    Quote Originally Posted by Westboundbiker View Post
    I don't understand the gap in front of the seat... it just breaks the flow to me.
    yeah - I get what you are saying. It was a compromise.

    I am 6'4" tall and had to get the seat up and back to make the mid pegs work for me. I loath forward controls as I don't feel in control of the bike. That is my dirt bike rider dayd coming through in me I guess.

    So - it was a function over form thing. The triangular metal box will house the small kick start only battery, the Ricks rectifier/regulator, ignition switch, power bus ect., and various switches (lights, kill switch etc.) I have led tipped metal toggles for that.

  16. #16
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    Quote Originally Posted by Arsenal View Post
    Well, I guess its not as bad as that cb900...
    Didn't like that one huh. Yeah - not a real chopper. I get that. But suprizingly enough, that bike drew a lot of attention and positive remarks while out and about with the regular public. ChopCult guys are MUCH more selective. More of an art form I think.

  17. #17
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    Well - it is finished. Took it on a ten mile run and figured where I need to be for tuning ect. All in all I am real pleased. It is fun to ride and people stare. Lots of thumbs ups.

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  18. #18
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    The two 55 watt headlights were a bit much for the charging system so I swapped them out for LED lights. Not a retro looking but I really like the look.Click image for larger version. 

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  19. #19
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    Runs fantastic!


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  20. #20
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    I like changing headlights I guess. Third one. :/

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