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circa 1970 Honda Monkey Bike- Project/Resto

Discussion in 'Biker's Cafe' started by Malt_Vinegar, May 31, 2009.

  1. Malt_Vinegar

    Don

    Joined: Oct 20, 2002

    Posts: 15,174

    Location: In a house

    After 3 years of staling, and moving my monkey bike around the garage and not having any space to work on it i finally got my bum into gear and got working.

    With my garage cleaned, sorted and squared away, i could make some meaninful progress. (Some of you ma have seen my garage project thread)

    So, this was the bike as i got my hands on it. (albeit, with the endine removed)

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    Fuel tank
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    Front wheel/brakes
    [​IMG]

    49cc engine + Rear light + A big pile of bits!
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    Rear Wheel
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    Dodgy bars:
    [​IMG]

    So, that was the bike as I got it. As far as I know, it has not been started for at least 10 years, but these things are reknowned for being bullet-proof. So a top end strip down/clean/rebuild is in order just to keep it in top nick :)
     
    Last edited: Oct 15, 2018
  2. shimy182

    Mobster

    Joined: Sep 6, 2005

    Posts: 3,805

    Location: Cambridge

    Awesome project!, if I lived closer I would have loved to come to see the progress
     
  3. Malt_Vinegar

    Don

    Joined: Oct 20, 2002

    Posts: 15,174

    Location: In a house

    Day 2!

    After a bit of work, I managed to get the top end stripped down. I was pretty mucky in there, took about 20 minutes of some brushing to get the valves/head/piston cleaned up. Its not perfect, but should be ok (I will be looking to replace the engine at a later date with a 110 or 125) The bore looks superb though :)

    [​IMG]
    [​IMG]
    [​IMG]

    Next up, the corroded wheels were stripped down and the rims were treated to a load of wire wheeling!

    Both ended up looking something like this...
    [​IMG]
    [​IMG]

    Not a perfect polished look, but it these are being painted, so no need really. Just a few coats of primer to keep them nice till painting time :)

    [​IMG]

    The fuel tank was holy, so this needed wire-wheeling to see where the holes are, and where JBweld needs to be appied. (The tank will be petsealed before use proper)

    [​IMG]
    [​IMG]
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    So, now, you can see the many holes!!
    [​IMG]

    Yukky - Should be able to get this repaired hopefully.

    Managed to get the tank badges off un-hurt also :)
    [​IMG]

    Thats it up to Last night. I need to get a gasket set for the topend, and some JBwelb to get the tank sorted. I think i will need a new carb, im missing some internal parts from the one I have, and dont think i can get a re-build kit :(

    I am not sure on the legality of lights at the moment, I am being assured that lights/speedo/indicators are not requied due to the age. However, it will need a horn. As mine is pre-72, apparently a squeezy horn will do! I dont think thats a route i will go down though :p
     
  4. Batf1nk

    Wise Guy

    Joined: Oct 18, 2002

    Posts: 1,537

    Location: Leicester

    Cool! This going to be road legal?
     
  5. Malt_Vinegar

    Don

    Joined: Oct 20, 2002

    Posts: 15,174

    Location: In a house

    Yup, thats the plan.

    To register a Monkey Bike for road use you must acquire the following:
    Age related certificate from manufacturer or MBUK or Roy Bacon
    MOT certificate
    Insurance certificate
    V55 form from DVLA (not available in post offices)
    £55 Payment
    Photographs of the bike including close up of VIN

    Send all that to your local Vehicle Registraion office and in a week or two, they will issue you with an age related registration mark
     
  6. Dogbreath

    Capodecina

    Joined: Oct 18, 2002

    Posts: 16,651

    Location: Devon

    You only need a working horn for a daytime MOT, though I personally wouldn't ride a bike on public roads without a brake lamp.
     
  7. RoysonBobson

    Gangster

    Joined: May 8, 2008

    Posts: 417

    Location: Leeds/Cambridge Uni.

    hope this goes well!
     
  8. Thomas. PLease.

    Soldato

    Joined: Jul 5, 2007

    Posts: 5,277

    Location: London

    Awesome little project, looks great. :cool:
     
  9. Malt_Vinegar

    Don

    Joined: Oct 20, 2002

    Posts: 15,174

    Location: In a house

    Ok, I have been working on the fuel tank, and given the wheel a quick blast of black for now.

    I should probably say that at this point i am just getting the thing back to road-worthy condition so I can get it MOTed and road legal again. Once it is registered then the proper paint job and frame re-spray will be done. (Basically, its easier to get this done whilst the old frame numbers are easily visable)

    I am considering speaking to a local powder-coat company to see what they can do for the bike at a later date :)

    The tank with a bit of filler, needs a few more goes to get it right(Im a bit new to this filler malarkey!) I think it might work better after a couple of layers of primer?
    [​IMG]

    Liquid metal - Savior of fuel tanks - Worldwide! (Yet to be sanded in this pic)
    [​IMG]

    Forgot to get pics of the wheels, but I will soon enough :)
     
  10. bledd

    Don

    Joined: Oct 21, 2002

    Posts: 46,659

    Location: Parts Unknown

    gogo-banana-bike

    :)
     
  11. Jonny69

    Man of Honour

    Joined: May 3, 2004

    Posts: 17,654

    Location: Kapitalist Republik of Surrey

    Looks like this is going to be a laff, I'm watching ;)
     
  12. Malt_Vinegar

    Don

    Joined: Oct 20, 2002

    Posts: 15,174

    Location: In a house

    Fingers crossed :)

    I just ordered the gasket kit, a handlebar knob (to replace the broken 1) a spark plug, and the tank rubber set. - Fingers crossed that lot will arrive on Friday, so i can get the engine back together.

    I am then picking up a few other bits from a guy I spoke to online

    Standard Exhaust, Standard Carb, Original Coil, Ignition Switch and a tatty seat (for MOT purposes)

    I just need to get my hands on a V55/5 form, and an age certificate from either Honda (£27.50) or MBUK (£20).

    It is possible, if all goes to plan, that I might have a working bike by the end of next week. This will mean i can then get it MOT'ed and send off all the other documentation to the DVLA.

    :D:D

    Going by my previous experiences with the DVLA, i fully expect there to be problems at this point.
     
  13. classicVin

    Hitman

    Joined: Feb 1, 2008

    Posts: 788

    nice project :D
     
  14. Malt_Vinegar

    Don

    Joined: Oct 20, 2002

    Posts: 15,174

    Location: In a house

    Thanks :)

    I managed to get some work done last night.

    Did a bit more filler work on the fuel tank. Decided to give it a light coat of primer to protect it. It still needs a couple more skims of filler to get the shape perfect though.
    [​IMG]

    Sanded the wheels down a bit, and gave them another quick blast of black.
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    Not a perfect finish, and a little run on one side, but happy with it for now. Should look a bit better when the tyres are cleaned up too.
    [​IMG]

    I then decided to try and remove the forks, and the handlebars, as they are a bit ropey, and will need some work. I managed to break the one good handlebar holder i did have.. Oh, and also managed to snap off the mounting bolt for the right hand bar. So, I think new bars are needed too :(

    Managed to get them off though, and didnt lose a single bearing!
    [​IMG]

    The frame is almost bare now.
    [​IMG]

    Sorry about the poor pics, it was getting dark!
     
  15. Master Skooter

    Mobster

    Joined: Oct 19, 2002

    Posts: 3,449

    Location: Somerset

    Just realised that it's you Malt :D

    I'm jealous...monkey bikes rock! :cool:
     
  16. Malt_Vinegar

    Don

    Joined: Oct 20, 2002

    Posts: 15,174

    Location: In a house

    I know, they are wicked :D

    Next -
    I got the wheels built up...
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    Re-covered the old wiring loom....
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    ...
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    Started to build the bike back up again..

    Fitted the ignition, the coil, the forks/headset, wheels/brakes, enginecase (minus head/cyclinder) and did a bbbbit of wiring :D
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    Then i mocked it up with some of the newer bits to see how it might look :D
    [​IMG]
     
  17. 4T5

    Man of Honour

    Joined: Aug 30, 2004

    Posts: 27,746

    Location: Middle of England

    Subscribed.

    I want one of these to go with my camper but can't find the right one, Plenty of monkey metal foreigners about but no Gens. :(
    I'll make do for now watching your rebuild, Good effort. Monkey bikes rock.
     
  18. danza

    Capodecina

    Joined: Mar 28, 2005

    Posts: 13,646

    Location: Drunken badger punching

    LOL at the wiring 'loom'. :D

    Good work, keep it up and don't mash yourself when it's running.
     
  19. elmuzzy66.

    Capodecina

    Joined: Aug 24, 2006

    Posts: 10,106

    Location: Gibraltar

    Brings back the memories of camping and the monkey. Oh and few scares 2
     
  20. 4T5

    Man of Honour

    Joined: Aug 30, 2004

    Posts: 27,746

    Location: Middle of England

    Think if I'd have stripped it down that far I'd have got a leccy start C90 lump & a "thumper" exhaust on it. It's not fun unless you are disturbing everybody else on the camp site, waking babies 5 miles away & getting dogs to chase you like they have rabies. :p






    /joke (Before the Brigade attack me)