CB360 Servi-car

Discussion in 'Some Assembly Required' started by CharlieT, Feb 1, 2013.

  1. CharlieT

    CharlieT old school

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    Yup, you read that right, building a Honda CB360 Servi-car. Of course now, all the young whippersnappers are googling "servi-car" to see what the hell is a servi-car. So, I'll save you a few key strokes. This is a servi-car
    [​IMG]

    VIrtually all were made by Harley and I beleive they were Harley's longest running model. While some were used for various tasks, such as delivery vehicles, the most common use was by city police departments for traffic/parking patrol.

    So now you know what a servi-car is and are wondering why in the world would you build a CB360 one?? Well, why not?

    We pckjed up this CB last spring. Kind of a sad story. Gentleman bought it new in 1974, put 1800mi on it that summer and unfortunately passed away that following winter. His widow parked it in the back of the garage and left it there under a tarp until last spring. Piece of advice here....do not indefintely store a bike under a plastic tarp!!! Most all of the chrome was mildly to severly rusted. Fortunately the engine was free and has stock spec compression. Gas tank was surprisingly rust free inside.

    So we had the options. 1) get it running as is a sell it as a daily-driver. 2) restore it to like new. 3) use it as the basis for customizing.

    Option #1....sorry but I have a hard time leaving things as they are. I tend to look at a lot of bikes the way the are and see in them what they could be. So option 1 was out

    Option #2. Between the 350/360 models, Honda imported something like 450,000 of them to the US. THey are not rare collector bikes. With all the rechroming this would need to be pristine, the restoration cost would exceed the value of the finished bike.

    So we were left with Option #3. Use it as the base for a custom build. But what would we build??? Gee, anyone ever seen a CB350/360 cafe racer?? Only a few of those arounbd, right? Cafe...road race replica....street-tracker.....plenty of those around. Need to come up with something different.....
    #1
  2. YOUNZ

    YOUNZ Been here awhile

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    All that said, still doesn't make much sense.:huh
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  3. CharlieT

    CharlieT old school

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    THe bike sat in the Pole barn in the back of the shop for a few months during the busy summer season. Then one slow day, I was looking around the shop storage areas and there sat a rear swing arm/axle assembly from a 1986 Honda ATC250R. A three-wheeler that gave up its frame for another project of ours. I looked at that rear axle assembly and looked over at the dust-covered 360.......hhmmmmm. Out with the tape measure and in a moment of creative clarity, or deranged hallucinogenic flashback from the '60's....a vision came to me. A CB360 3-wheel servi-car.

    [​IMG]

    Betch nobody has built one of them before, at least not around these parts.

    Could come in very handy to have. Lotsa times I end up driving the cage to pick-up parts, etc., that I can't carry on a bike. Or the old lady could ride it to the store to go grocery shopping. Could even be used to haul a few cases of beverages for those weekend camp-outs. Pluse with the right tires and two-wheel drive, could even have a ride for the snow season up here in Michigan.

    First thing to go was the ATC rear wheels. This ain't going to be no mudbogger. Tried a few wheels we had around the shop and ended up that we will be going with some 19" front rims from "77-'78 CB750K. THe spoked rims will go with the old-school look. With the assistance of a tool-die/machinist friend, designed some bolt on spacers/adapters to be able to hook the CB750 rims to the ATC hubs.
    #3
  4. bk brkr baker

    bk brkr baker Long timer

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    Have you seen the CX 500-650 powered meter -maid trikes?
    #4
  5. CharlieT

    CharlieT old school

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    Had never seen one before I started look at images of servi-cars to get some build ideas. Looks like from what little I could find about them, they were custom-built for police patrol duties also. Oh well, guess my idea of a Honda servi-car wasn't an orignial after all.
    #5
  6. bk brkr baker

    bk brkr baker Long timer

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    Originality is overrated anyway.Everything old is new again.
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  7. kellymac530

    kellymac530 motorcycle addict

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    Sounds like a fun and different deal. I am NOT a 3 wheel tricycle guy at all, but, a project is a project. Have fun with it.
    My dad had a servi car when he was young. He ended up selling the trans to a guy who was short and had a hard time pushing his old HD backwards out of a parking spot. My dad customized his frame and put the Servi car trans into it so he had reverse on his motorcycle. I have no other details on how, but I remember the story.

    Just a thought if I may, the issue I see with the quad based rear end is that there is no differential for the rear wheel, unless you have a plan for that.
    It will be kind of hard to turn when the rear end wants to only go straight. In the dirt quards are not too hard to turn because the dirt allows the slip of the inside wheel and acts as a "differential" of sorts. On pavement quads suck to turn.

    Just a thought to look at or be aware of.
    #7
  8. SCQTT

    SCQTT Zwei Kolben

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    Growing up in Columbus OH as a kid in the 80's I saw lots of the little Servi-Cars we had running around here doing downtown parking & traffic duty. They were Honda CX based....either 500 or 650, I'm not certain which.

    Rumor has it there is still a couple in the fleet & every once in a while they still use them.
    #8
  9. CharlieT

    CharlieT old school

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    Oh, we have several other projects going on and a couple more in line waiting. Also building a 1972 Suzuki GT250 cafe racer that would be a more conventional build. The other current project is using the ATC250r chassis with the built 250R motor. It is already mated to a CBR600 swingarm, set-up in the rear and in the process of mounting a Buell XB front end to it, Honda CB650 tank, TZ250 seat/tailsection:

    [​IMG]

    That's where the ATC rear axle assembly came from.

    Also have a line on a Sonic-weld rigid tail flattrack chassis that's made for a Honda CL72/77 motor, which I just happen to have a good one sitting around. :)

    Quite familiar with solid axle rearends. My son road raced 125 shifter karts and 250 Superkarts for many years.
    #9
  10. kellymac530

    kellymac530 motorcycle addict

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    No offense meant. Just wanted to throw up my observation. Sorry.
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  11. CharlieT

    CharlieT old school

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    None taken and no need to apologize. All opinions/observations are welcome.
    #11
  12. CharlieT

    CharlieT old school

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    Waiting on the rear hub adapter plate/extensions to get back from the machine shop. So been busy working on other parts of the bike. 1/8" gusset plate added to the new swing arm pivot point.

    [​IMG]

    Also added some slightly modified vintage GoldWing floorboards and converted it over to a hand shift.
    [​IMG]

    Going old school, got the hand shift done and it seems to work fine. Haven't decided on what to do for a gearshift knob yet.

    [​IMG]


    Floorboards mounted, gearshift done, now working on the foot clutch and brake pedal set-ups.

    [​IMG]
    #12
  13. Salsa

    Salsa Been here awhile

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    Too much gusseting often causes a frame break.

    Be careful ending a gusset. A very stiff section ending is where more bending starts. This is where it breaks.

    Don
    #13
  14. CharlieT

    CharlieT old school

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    You are absolutely correct. If you look closely at the pic, there was an existing tubular loop on the frame. The gusset plate actually sits within that loop, so the ends of the plate are at the point of origin of the original tubular frame member, which should hopefully reduce that stress point that would have been created if it had just been welded directly to the main frame member.
    #14
  15. wario

    wario good bike cleaner...

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    you seem to be a very interesting human - I look forward to meeting you. Im in Grand Rapids.

    :thumb
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  16. CharlieT

    CharlieT old school

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    wario...was going to tell you to check out the West Michigan thread over in the regional forums, but I just saw that you've already been there. Lotsa of folks on there from the GR & Ottawa County area. Stop by the shop in Galesburg anytime, always got a pot of coffee on, a fridge full of beverages, and a line ofbench racing BS.
    #16
  17. Carter Pewterschmidt

    Carter Pewterschmidt Long timer

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    A strange build but probably a more appropriate use of a CB360 than a race bike lol.

    Will be neat when it's done. You could probably sell it to some self employed hipster that will pedal vegetarian tacos out of the back of it.
    #17
  18. SCQTT

    SCQTT Zwei Kolben

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    If this is the case it might be wise to build in some special hidden storage spots for his special ingredients.
    #18
  19. wario

    wario good bike cleaner...

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    My bench is not very fast, but it's a good talker...

    Look forward to meetin' ya. :evil
    #19
  20. CharlieT

    CharlieT old school

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    Well, I recall the pedal version that cruised the neighborhood ringing a bell selling ice cream to all the kids that came running.

    Oh, wait a minute....those had the cart before the horse.
    #20