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different engine commando frame

Discussion in 'Norton Commando Motorcycles (Classic)' started by 84ok, Aug 17, 2015.

  1. 84ok

    84ok

    Joined:
    Aug 10, 2014
    having seen all kinda combinations out there, frame/engine, i was thinking of possible options with the commando, then just when i started to look closer at what was out there, i finally realized that all the changes were on featherbed frames,

    haven't seen a commando with a non norton engine so i figured the isolastics setup was an issue,

    then i became aware of a yamando, so, what's the story with fitting another engine in a commando frame?
     
  2. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    NVT fitted a Trident engine into one as an experiment, it is in the National Motorcycle Museum I believe.

    I have seen pictures of at least 2 Honda 750 4 engines fitted.

    One Triumph twin, a different take on the Triton theme!

    There have been some Nourish engines fitted. When you consider that these come in 900 or even 960 format, and are a none unit parallel twin, that makes good sense!
     
  3. Doug MacRae

    Doug MacRae

    Joined:
    Jan 28, 2010
    Fast guy Brad Monk on the Toivo Madrus built 'Yamando', a very fast bike-

    [​IMG]

    [​IMG]
     
  4. SeeleyWeslake

    SeeleyWeslake

    Joined:
    Dec 22, 2011
  5. trident sam

    trident sam

    Joined:
    Oct 23, 2012
    several years ago I bought a part built special, a T160 motor in a Commando frame - no isolastics.
    there was too much gusseting and exposed welding to ever make a good looking bike, and I was apprehensive that the frame could take the weight of the triple motor so I broke it up.
    sam
     
  6. Danno

    Danno

    Joined:
    Feb 7, 2010
    Not a Commando, but a Featherbed...


    [​IMG]

    Dude who inherited it from a late friend called it a " Norton Manx" chassis, "Kawaton"
     
  7. baz

    baz VIP MEMBER

    Joined:
    May 26, 2010
    I bought a commando frame last year that had been run with a trident engine I wonder if it is your old one? ,,,,,baz
     
  8. 84ok

    84ok

    Joined:
    Aug 10, 2014
    V twins doable? (1200 sportster engines can pack a punch)
    https://www.google.ca/webhp?hl=en#hl=en ... ortster+hp
    https://www.google.ca/webhp?hl=en#hl=en ... r+upgrades

    also had a look at some modern twins with 360 deg cranks

    https://en.wikipedia.org/wiki/Yamaha_XTZ_750 (think dohc 5 valve per cyl heads)

    fi - computers at some point

    https://en.wikipedia.org/wiki/Yamaha_TDM850 (shift to 270 deg firing order at some point)

    https://en.wikipedia.org/wiki/BMW_F800S (wrong side belt drive scenarios, dohc 8 valve head, computers)

    along with the twin cam dohc kawi from 76-84 (counterbalanced)

    xs 650 yam sohc
     
  9. trident sam

    trident sam

    Joined:
    Oct 23, 2012
    Possibly Baz, I'm sure I saw the frame on ebay. I think the guy who bought it off me just wanted a log book with Norton 750 on it.
    sam

    The bike never ran while I had it and I'm pretty sure it hadn't run before me either
     
  10. 84ok

    84ok

    Joined:
    Aug 10, 2014
    https://www.flickr.com/photos/michel_67 ... 343112419/

    pix
    https://www.flickr.com/photos/900gts/42 ... 343112419/
    looks like a triumph front end may not be a huge deal

    first time i've seen this
    https://farm5.staticflickr.com/4137/487 ... e8f5_z.jpg
     
  11. lcrken

    lcrken VIP MEMBER

    Joined:
    Mar 15, 2009
    About the only reason (besides "because I can") for fitting another engine into a Commando frame would be the same reason Norton did it, to reduce the vibration from something with inherently large vertical plane balance forces, like a huge vertical single or 360 degree twin. Not much point in fitting something like a 4-cylinder or anything with a balance shaft. On the other hand, "just because I can" has it's own appeal. How about a Honda CR500 2-stroke, which is famous for breaking parts off due to vibration. On the other hand, a unit engine looks a little small in the space normally filled with a separate engine and transmission.

    Ken
     
  12. 84ok

    84ok

    Joined:
    Aug 10, 2014
    part of the reason for some folks is the great appeal of easy to find suitable cheap (to buy) good engines that are out there for the pickings,

    i bet there will be more of that over time given the value and big (or certainly not insignificant) costs of staying or keeping the bikes original, even today, which is likely to just go up,

    there will always be appeal, to just doing something different
     
  13. baz

    baz VIP MEMBER

    Joined:
    May 26, 2010
    i bought my frame off a bloke at kempton park autojumble it does look very well constructed its an 850 frame converted to take the trident motor i thought it was probably a t150 because it had norman hyde footrest plates set up for right hand gear change, i bought it to convert back to a commando special but there is no frame number that i can see,so i will look around further for another frame with a frame number! ,,,,,,,,,,,,,,,baz
     
  14. acotrel

    acotrel

    Joined:
    Jun 30, 2012
    I wonder about the mentality of some people - to me that bike looks like DEATH !
    A JAWA speedway engine fitted to that bike with an AMC box would be much better and much CHEAPER !
     
  15. Triton Thrasher

    Triton Thrasher

    Joined:
    Feb 10, 2009
    I must have a look for the photo I took of a BSA A10-engined Commando, I took at the TT.
     
  16. ashman

    ashman

    Joined:
    Jul 11, 2010

    Some poeple just waste a good frame or they didn't know what they had, who knows how some think :x
     
  17. Rohan

    Rohan

    Joined:
    Aug 26, 2010
    It doesn't have some of the expected brackets a manx would have,
    and it has pillion footpeg provision !!, so its not very manx :?:

    For an engine that had a reputation of having a pig of a frame, a featherbed makes some sense - put it in the best frame around... ??
    Would be interesting to hear how it went, just for curiousity value.
     
  18. Danno

    Danno

    Joined:
    Feb 7, 2010
    New owner says he will get it going. If I hear any more, I'll update.
     
  19. Danno

    Danno

    Joined:
    Feb 7, 2010
    Don't know about the rear section, but the front of that "BSA" chassis has twin downtubes. More Commando than Beezer.
     
  20. MikeM

    MikeM

    Joined:
    Jun 1, 2011
    Do I see a Kawasaki Triple?
    I had one of those.
    That would be a crazy combination.
    That motor in a good frame would be a great combination.
     

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