The vintage Montesa Cota mini-bike thread

Discussion in 'Trials' started by Brewtus, Dec 11, 2017.

  1. Brewtus

    Brewtus Buffoonery, Inc.

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    For that amount of scratch you could get a nice modern one. But I'm sure some Mecum moron will "invest" in it, much to the pleasure of the Mecum moron selling it. :csm
    #81
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  2. Solarflares

    Solarflares Been here awhile

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    Fuck me. Didn’t realise I’d put this on the “homeless” forum.
    #82
  3. Brewtus

    Brewtus Buffoonery, Inc.

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    Nope, not at all. 172s have a place here, even over-restored, Calvin Klein-priced museum pieces. The asking price is a bit insane, or just about right for Mecum Auction boobs.
    #83
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  4. Solarflares

    Solarflares Been here awhile

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    Boobs and auctions? Ah yes. Celebrititties are now selling their old breast implants at auctions to raise money for charities.
    But $5k won’t get you much. Maybe a nipple?
    Agree , it’s surprising what a bit of nostalgia , and a shit-load of inheritance - does to prices of long forgotten junk.
    If parents did the right thing , and simply spent all their money enjoying themselves , then we wouldn’t have all this bollox.
    Don’t even ask me what a Ferrari pedal-car goes for nowadays!

    Mind you , times are changing. Before , middle-class children would be deprived of the gifts of things like expensive trials bikes , top electric guitars , designer clothing etc.
    These are the idiots that , when they inherit - make up for lost time , and buy that shit they always wanted when a kid. Add a little mid-life crisis to the equation , and they now outbid each other over the most terriblist shit ever known.
    The good thing was that we seldom had robberies and mugging. Poor kids just accepted their status , and would dish-out spurious beatings instead - if you invaded their patch. A poor kid walking around a decent area , would inevitably be challenged pretty quickly by any adult , as to what they were doing. Rich kids were generally left alone , unless they had a cute sister - in which case you’d hang around her like flies , since they generally were pretty mixed-up and “easy”.
    If you wanted something - you worked for it.

    But now , the middle-class buy their kids all the stuff. It’s no wonder the crime-rate is out of control. Scum wander the streets unchecked , grabbing phones , trainers , jackets etc. They even target remote trials venues mid-week , and mug younger riders of their bikes. It’s a pick and mix sweetshop for the deprived - who , if caught , will get a suspended sentence and probation. Home insurance now covers the lost items - and we all pay for it with our inflated premiums. Thanks a lot , you mis-guided twats.
    There does seem to be a slight shift against youth-materialism, and hope for the future perhaps. But then again , it could be because kids are shit-scared to own anything - in case they are killed for it!

    Anyway , back to tits........

    https://www.ok.co.uk/celebrity-news/523310/katie-price-auctions-off-old-breast-implants

    https://www.google.com/search?q=celebrity auctions breast implants&ie=utf-8&oe=utf-8&client=firefox-b-m

    Or if just one tit is enough.....
    https://www.dailymail.co.uk/tvshowb...breast-Star-auctions-single-implant-eBay.html
    #84
  5. Brewtus

    Brewtus Buffoonery, Inc.

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    Took the bitsa-Cota for a ride in the truck today (Who wants to go for a ride? Wanna go for a ride boy?) to Roswell, NM. Met up with @jberg98n where he dragged his very nice MR50 out so's we could put eyeballs and measurin' sticks on them to see of an MR lump would work. Didn't take long to realize...YES!

    20190327_091918.jpg

    We got to wondering if the Cota tank would fit on an MR frame...

    20190327_094810.jpg

    :nah

    The search is now officially on for an abandoned MR50 roller! :evil
    #85
  6. Brewtus

    Brewtus Buffoonery, Inc.

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    Heh heh heh....

    20190712_095958.jpg
    #86
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  7. lineaway

    lineaway Long timer

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    Spent too much time in WEST Texas.
    #87
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  8. Huzband

    Huzband Team Dirt

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    :fpalm
    #88
  9. Ymirtrials

    Ymirtrials Been here awhile Supporter

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    Ummmm....neat :scratch
    #89
  10. Brewtus

    Brewtus Buffoonery, Inc.

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    Just wait.... :evil
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  11. Brewtus

    Brewtus Buffoonery, Inc.

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    Yup as depicted above, found an MR50 derelict. It came out of Washington, @Portlandtyist was nice enough to store it for a while, and it came here thanks to a Team New Mexico member who brought it back from the Oregon National. :thumb I went to Albuquerque Friday to pick it up, get a lot of errands done, then spend Saturday with some of my League teammates prepping some TY80s for the second half of the MWVTA season -

    20190713_170600.jpg

    Came home this morning, and immediately started planning -

    20190714_103150.jpg

    Hmmm, just curious if the piston is in good shape....

    20190714_112054.jpg

    Aww, who needs piston rings anyway? :lol3

    More to come....
    #91
  12. Brewtus

    Brewtus Buffoonery, Inc.

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    Not that I'm ready to build the engine in the MR50 donor just yet, but I did decide to pop off the stator cover and see how much play the crank had in the cases. Found the flywheel nut loose, removed it, gave the flywheel the slightest of tugs and it came off in my hand (good thing, I wasn't sure I had a puller for this one). Peeked inside and....

    20190714_124145.jpg

    Yeah, no points. Gotta love donor bikes!! :rolleyes

    Went to work on some TY engine bits afterward. This thing can wait a while. :lol3

    More to come....:thumb
    #92
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  13. Brewtus

    Brewtus Buffoonery, Inc.

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    So I was pretty bummed when I measured the Mister Fitty fork tubes to find out they wouldn't fit into the Cota's sliders, 25mm for the Fitty forks, 27mm for the Montesa's. Durnit. :(

    Wait.... 27mm? Aren't YZ80 forks 27mm?

    20190716_143452.jpg

    Heh heh heh.... :evil
    #93
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  14. Portlandtyist

    Portlandtyist Been here awhile

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    Update on the Cota49 project. We were about to toss the whole shebang into our local Willamette River due to the fact that we could only get spark less than 3% of the time. Pulling our hair out and asking all our friends (Brewtus one of them) for any tips, pointers etc... We realized that the “new” replacement points had faulty insulators which grounded them most of the time.
    So now, hopefully last time, flywheel is torqued and we are sorting out some cable issues. Learned much in the process.
    #94
  15. Brewtus

    Brewtus Buffoonery, Inc.

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    It's practically assembling itself! :lol3

    20190723_082256.jpg
    #95
  16. Brewtus

    Brewtus Buffoonery, Inc.

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    Getting closer. Lopped off the Cota's upper engine hangers, and it looks like the MR lump will tuck in nicely. Time to start mocking up the ride height, and start working on some engine mounting plates.

    20190723_121124.jpg

    A plasma cutter shore would be nice.... :shog

    More to come. :thumb
    #96
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  17. Trevor Hallam

    Trevor Hallam Adventurer

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    576E8985-AB60-42D3-8366-A78B876487CD.jpeg 574D6E02-A2F0-4927-A2EC-74F179DFED0C.jpeg 5BA9F685-5AD2-4417-AED8-040C8BFCB480.jpeg 1397C857-6A12-410C-BB0E-8081380D25F1.jpeg A quick update here, as the days get shorter, darker and colder i’ve had time to start piecing things back together. I haven’t really bought any parts except for seals and bearings, i’ve just been refurbishing and it’s going pretty well. Starting to feel like it might be ready for a rip by spring.
    #97
  18. Brewtus

    Brewtus Buffoonery, Inc.

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    Sweet!! Painted steel rims, or alloy bling?
    #98
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  19. Trevor Hallam

    Trevor Hallam Adventurer

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    The rims are the original steel ones that I showed in the earlier post. I just sandblasted them, then sprayed them with etching primer and rattle can wheel paint: https://www.duplicolor.com/product/wheel-coating/.
    Cheap and cheerful.

    The bars are painted too, I couldn't justify sending anything out for chrome for a kids trials bike project, but wanted them to look cleaner than the pitted chrome that was there.

    I've done all of the prep, paint and plating myself to be cheap (and because it gives me something to do). I've had really good look with the caswell plating kit for all of the fasteners and pieces that would be chromed but are small enough to fit in the plating bucket. Super easy to use and great results.

    Other than that I have a home made vapour blaster for aluminum bits and general cleaning, a buffing wheel for shiny bits that don't need plating, and the rubber bits were just slathered with Vaseline to re-hydrate them and they look like new.

    (I know what you're thinking..... I would never use the Vaseline trick on road tires. But for out of production dirt tires that cost more to replace than the finished bike will be worth? They're getting the Vaseline treatment for sure)
    #99
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  20. DyrWolf

    DyrWolf Long timer Supporter

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    I wonder if anyone will care enough about one of the new electric bikes to want to restore one in 40 years. I like electric but there is no soul in them,