Franken Guzzi - hence Frankuzzi - a Desert Guzzi is born

Discussion in 'Land of the Rising Sun: ADV Bikes from Japan' started by Desertpistons, Nov 29, 2011.

  1. Adrian V

    Adrian V Been here awhile

    Joined:
    Jul 15, 2008
    Oddometer:
    521
    Location:
    Albany Western Australia
    Are you saying you could make a similar bike from a 500? Is the frame/engine basically the same? Great thread and I have a lead on a 500....

    Cheers,

    Adrian
    #41
  2. Desertpistons

    Desertpistons 80s dakar

    Joined:
    Jun 5, 2005
    Oddometer:
    254
    Location:
    Texas
    I believe so but i am not sure 100%. heck all the beemers r frame are more or less the same. Take some pics and we compare


    #42
  3. chris a

    chris a Been here awhile

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    Oct 22, 2011
    Oddometer:
    107
    Location:
    Southern France
    The 500 frame will work.They have the shortest swinging arm but as DesertPistons has shown that's the weak point so if you are serious it has to go. They also use cup and cone steering head bearings that are very expensive but I also assume that the forks will go too so that's another problem sorted !
    #43
  4. chris a

    chris a Been here awhile

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    Oct 22, 2011
    Oddometer:
    107
    Location:
    Southern France
    Really glad to see that work on your baja replica has resumed DP !!!!The "survivor" is the one in Northern France isn't it ?
    Love the swinging arm job you've done...we just need lots more pictures !
    #44
  5. Desertpistons

    Desertpistons 80s dakar

    Joined:
    Jun 5, 2005
    Oddometer:
    254
    Location:
    Texas
    here you go. Right.....so start with a cheap donor bike
    #45
  6. Desertpistons

    Desertpistons 80s dakar

    Joined:
    Jun 5, 2005
    Oddometer:
    254
    Location:
    Texas
    Most of the Bajas are in France. I know 5 of them being in Italy, mine in the US, 3 in Australia, the rest presumably in France
    Actually the one I posted is/was for sale around Monza Brianza, Italy.

    More pics will follow:evil
    #46
  7. Desertpistons

    Desertpistons 80s dakar

    Joined:
    Jun 5, 2005
    Oddometer:
    254
    Location:
    Texas
    #47
  8. Desertpistons

    Desertpistons 80s dakar

    Joined:
    Jun 5, 2005
    Oddometer:
    254
    Location:
    Texas
    Note the support for the shock.....serious stuff here :wink:

    love the laced borrani wheel with that lip.....no need to offset perfectly centered in the swing arm....yeah!

    [​IMG]
    picture hosting
    #48
  9. rocker59

    rocker59 diplomatico di moto

    Joined:
    Mar 24, 2004
    Oddometer:
    16,213
    Location:
    The Trans-Mississippi
    Love this build!

    :thumb
    #49
  10. gravelklr

    gravelklr gravelklr

    Joined:
    Jun 27, 2011
    Oddometer:
    15
    Location:
    east of wierd, Texas
    Cool Guzzi!! :thumb
    #50
  11. boboneleg

    boboneleg we can rebuild him.

    Joined:
    Mar 8, 2006
    Oddometer:
    890
    Location:
    Bristol UK
    #51
  12. JohnG.

    JohnG. Long timer

    Joined:
    Mar 18, 2006
    Oddometer:
    2,449
    Location:
    Tumbarumba, NSW at the foot of the snowies
    Yup :clap
    Just would be a little worried about engine reliability :ear
    Given small blocks rep...
    #52
  13. MZRider

    MZRider Neo-Luddite

    Joined:
    Oct 21, 2007
    Oddometer:
    732
    Location:
    Western MD
    Enjoying the build! One thing I'd do though is add some support for the swingarm pivot to the frame. Relying on the "ears" of the relatively lightweight alloy rear transmission casting to handle the stress of that larger/heavier swingarm, rear drive and wheel bouncing around off-road, could be a recipe for dramatic failure.
    #53
  14. Desertpistons

    Desertpistons 80s dakar

    Joined:
    Jun 5, 2005
    Oddometer:
    254
    Location:
    Texas
    Really? the bad rep is the 4 valve lario engine. the v50 e v65 are solid, at least in my experience I never had a problem if the bike is well maintained. There is a lot of abuse out there and maybe this is the result. The stock v65tt bike has few issues and as I mentioned the stock final drive is prone to failures over certain mileage. Another issue is the electrical circuit when it gets old but the v65 tt with its small block.... beside shity brakes, wimpy forks, bad exhaust...is one of the best guzzi engines ever. BTW the bmw g/s has many moles too....
    #54
  15. Desertpistons

    Desertpistons 80s dakar

    Joined:
    Jun 5, 2005
    Oddometer:
    254
    Location:
    Texas
    Thank you. Good technical observation
    You are right but this is not how the the bike's swing arm is pivoted. Bajas raced the dakar with this configuration, never a failure one the swing arm or the transmission casting: ie- We used threaded pivots with welded spacers inserts on the support holes. (I believe this is your suggestion). The bike has not not the v65TT usual set up. It is similar to r beemers' set up now.
    #55
  16. Desertpistons

    Desertpistons 80s dakar

    Joined:
    Jun 5, 2005
    Oddometer:
    254
    Location:
    Texas
    Lets talk about exhaust. I was able to get a piece of history. The exhaust of the proto 750 4valves. Nothing special about it... just 2 bended tubes but knowing that this came from the guzzi reparto corse makes me :D
    Unfortunately not a trace of the racing mufflers so I opted for 2 old style enduro mufflers (german origin) and i got them welded at the end of the exhaust

    A reminder pic of the proto


    [​IMG]
    #56
  17. Desertpistons

    Desertpistons 80s dakar

    Joined:
    Jun 5, 2005
    Oddometer:
    254
    Location:
    Texas
    We built a removable small back frame to hold the back tank in place. I wanted something small and gracious and I always liked the HPN tank.

    You may notice that the back exhaust is hold in place through a bracket and 2 springs. Nothing new, a solution adopted by Guzzi with the Baja bike. The springs allow and dampen the vibrations. The back of the muffler is removable by removing the 2 springs. It can be packed accordingly so it be may be quiet or loud. I left it loud.

    The back fender is an acerbis Baja. Note also the back shock mount. It is very different from the stock tt. It is braced and the shock is well supported by both sides.

    Last i like the large handle that protrudes from the tank. I can hold the bike there and pull it if i need.




    [​IMG]
    #57
  18. Desertpistons

    Desertpistons 80s dakar

    Joined:
    Jun 5, 2005
    Oddometer:
    254
    Location:
    Texas
    next the picture of the special desert air box. Back splash fender made out of kevlar. Believe it or not i did it myself.

    I could have improved the general electrics but i had a budget in mind. It will be the next project on this bike. the engine has an electronic ignition though...

    [​IMG]
    #58
  19. Dubl-A

    Dubl-A SuckerDucker

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    Mar 15, 2009
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    That's cool!
    #59
  20. chris a

    chris a Been here awhile

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    Oct 22, 2011
    Oddometer:
    107
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    Southern France
    Lovely work and very well documented.I'd love to do the same kind of mods to my NTX, cash being the limiting factor!!
    #60