While building these contraptions generally we stumble into a problem with our course of action that has a couple ways around it. It seems to me the logical solution and the horrible idea are the most popular methods of going about business. Luckily, somewhere in the realm of mechanical knowledge there lurks a thought process that's often dismissed as absolute insanity or pipe dreams. It adds to my faith in humanity seeing that Dean has successfully constructed a double dual variated, upside down Hobbit engine, on a Puch Pinto frame by embracing insanity and a couple sprinkles of magic. Check the complete spec list on the next page.
Deans machine from rafter on Vimeo.
"frame-puch pinto modified to hold gas, vespa ciao gas cap (frame tank is no longer functional)
gas tank-puch magnum x
forks-ebr puch, preloaded and heavier weight oil added
front wheel-suzuki rm80
rear wheel-honda hobbit transmission and hub laced to a 17×2.6 rim
front tire-2.5 kenda
rear tire-2.75 heidenau
crank case-honda hobbit cut up a bit, fdm moby bearings, one hobbit seal one batavus seal
crank shaft-doppler endurance for motobecane
cylinder-metrakit 70cc derbi
piston-stock metrakit 70cc
head-itialkit 70cc for puch, squish and chamber modified
exhaust pipe-puch simonini clone made by me, made to fit the bike by motomatic nate
intake-made by me
carburetor-mikuni tm 24mm flat slide, remote cable choke, k&n air filter
ignition-hpi cdi modified to fit moby crank, made my own stator plate
variator #1-doppler er3 for moby
belt #1-tjt for derbi
counter pulley #1-stock flat reed derbi
jack shaft-made from derb and hobbit parts, and a bit of 20mm steel round bar, running on two super high load sealed bearings
clutch-honda hobbit with heavier springs, clutch bell lathed down to reduce weight, starting clutch removed
variator #2-honda hobbit/derbi 6 weight, hobbit side was lathed down to match the taper of the derbi cheek
belt #2-honda 50 by polini
counter pulley #2-stock honda hobbit
seat-moby long seat pan, split and widened at the rear to fit puch rack, .5″ foam for butt pad
bars-homemade mini z’s, colony bmx bar ends
controls-motioin pro throttle modified, domino rear brake lever also modified, mystery front brake lever
front brake-suzuki rm80 disk, mystery caliper
rear brake-stock honda hobbit drum brake, heavy linear cable housing, over sized cable
rear suspension-chinese gas dampeners with pre-loadable progressive springs
other bits-moby vlx number plate, eastern bikes plastic bmx pedals (best frame sliders ever), peugeot pedal chain tensioner, kmc bmx chain, yellow treats grips, other bits and pieces from various mopeds and other places.."
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