Is a Dahon M7 a good candidate to motorize? (Staton ?)

Discussion in 'Rack Mounted Engines' started by 5-7HEAVEN, Jul 1, 2007.

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  1. 5-7HEAVEN

    5-7HEAVEN Guest

    :grin: Howziit guys,

    Wife and i drive to work together. same dayshift work schedule, but she tends to stay an hour or so later. i'd rather be home or gone, instead of waiting. tried bringing two cars, which didn't make sense. bringing her bike meant driving the van instead of our small car.
    a guy's selling a used DAHON MARINER 7 for $200. 5 years old, spent time on his boat. is this a good deal? i'm looking to install a MITSUBISHI 43cc friction drive (1.5"roller for speed)from STATON. is this a good match of bike and engine? the bike folds down to 12"X22"X33", should fit in my trunk. at 40 pounds with engine, i should easily carry it up my 2-story walkup.
    it's a 5-mile run home, just 1 medium hill near home.
    i'm also going back to night school after work. the college is 3 blocks from work. i'll be needing lights,safety gear,etc.
    should i buy this bike? i'm meeting the guy in a few days.
    thanks for help.


  2. skyl4rk

    skyl4rk Guest

    Sounds like a good candidate for a lightweight friction drive. It might even fit in the trunk of a small car.

    How have you been Myron, I remember you from the old visforvoltage forum, I went as E_equals_IR back then. Any idea where the electric crowd went after that board fell apart?
  3. Papasaun

    Papasaun Guest

    Crowd??? Board fell apart??? Go GET 'EM and bring them here! We have the Electric Avenue for the sparky folks.

    Sorry for "Jackin" your thread, but the more the merrier. We might even convert some of those sparky's to gas! :grin: :D :grin:

  4. 5-7HEAVEN

    5-7HEAVEN Guest

    8) Howziit skyl4rk,

    long time no see. :grin:
    i still have my electric cruiser, CRYSTALYTE front hub, 72vdc, 80 pounds of batteries. :shock: you still have your electric bike?
    playing with ICE(internal combustion engines) for now. batteries too heavy or too expensive to go fast.
    anyway, i met the seller, rode the DAHON bike, liked it and bought it. it's in the shop now for a tuneup, brakepads, performance tires and tubes.
    it fit easily in my small car's trunk.
    still doing research on the engine.

  5. skyl4rk

    skyl4rk Guest

    Yup, I still have my electric bike and I have an ICE bike on order. I'm crossing over to the dark side to be able to do long distance rides. One hour of battery power is just not enough!


    You might be able to get by with a smaller motor, 35cc or so, because the bike and friction drive assembly will be very light. Also, with those small tires you will not want to go extremely fast. If you have a lot of hill climbing go with a bigger size.

    Make sure you get tires with a smooth surface and a lot of tread thickness.

    I have driven many miles on a Solex, friction drive works fine.
  6. 5-7HEAVEN

    5-7HEAVEN Guest

    :shock: No disrespect, but didn't you buy one of those cheap chinese bikes, which came with the electric motor...and the crankset broke?
    and didn't you have those WALD rear metal baskets? if that was you, i copied you and bought the large WALD rear baskets and the front basket. i mounted my batteries in my baskets, front and rear.
    i seem to vaguely recall your picture near the waterfront. :cool:
  7. skyl4rk

    skyl4rk Guest

    Yes, I started out with a cruiser, but after hitting potholes at speed I was convinced I needed a better bike. I was also using the Wald wire baskets to hold two sets of 36V 12A-h battery packs. I love my shocks on this bike, unfortunately the Wald baskets didn't fit, so I am back to a single battery pack.
  8. 5-7HEAVEN

    5-7HEAVEN Guest

    8) I've decided to buy a ROBIN 35cc 4-stroke friction drive for my DAHON bike. less powerful than the MITSUBISHI, but more than enough for the tiny 26-pound bike. i like the fact that the engine can be easily retrofitted to my girlie cruiser, or my wife's 24" bike.
    so if i buy on ebay through this forum's link, it is a good thing, right? :?

  9. gone_fishin

    gone_fishin Guest

    if the searchbox is used for any reason and you make a purchase within 30(?) days, we make a small amount that goes towards MBc stickers...thanks for asking :)
  10. 5-7HEAVEN

    5-7HEAVEN Guest

    8) Thanks for the tip, augidog. i bought the ROBIN engine on ebay an hour ago; rear mount, 1 1/8" roller for 200-pounders(me), 96 oz tank for 120-150-mile range.
    i hope no one pees in my big gas tank at night school. :shock:
  11. skyl4rk

    skyl4rk Guest

    How much did it set you back?
  12. 5-7HEAVEN

    5-7HEAVEN Guest

    :cool: it cost $379, plus $13 for extra engagement support rod. plus shipping is $30 to HI, but free to lower 48 states.
    more expensive than 80 pounds of 72vdc batteries. however, NimH or Lithium batteries would cost more than TWICE as much as this engine kit. :shock:
  13. srdavo

    srdavo Active Member

    did you buy the staton kit? I have one......23cc mitsubishi. I am impressed, so far. here's my thread---->

    now here's the story I seldom tell....... :lol:
    At 1st I put my friction drive on a kids bmx with a long seat post & tall handlebars.
    here it is in front of the rest of my rats.... 8)

    On this 20" bike, It would run over 20 mph, but took forever & lots of pedaling to get there. Plus, it rode kinda freaky, being such a short wheel base. On the current bike....a grown up Schwinn, I pedal & throttle up to 8 mph, then just throttle up to 23/24 mph. It rides nice....but the schwinn seat feels like a brick!!

    I believe your Dahon will have a much longer wheelbase, so it should handle better. Does the Dahon have gears on the pedal side? If so...that should help.
    FYI....I have noticed NO tire wear.
    and.....the kit took about 20 minutes to change from bike to bike. :D
  14. 5-7HEAVEN

    5-7HEAVEN Guest

    8) Thanks for feedback on your bikes, Dave. yes, the DAHON has 7 speeds.
    i just picked the bike up from the shop. tuneup plus new cables and PRIMO 90psi tires and tubes. it handled very well, and i'm waiting for STATON to email with total cost.
    i hope the ROBIN engine runs as well as advertised.
  15. bamabikeguy

    bamabikeguy Active Member

    Hey there Fifty Seven-

    I hate to harp on zip ties on the spokes, but 50 cents worth of zip ties will make those wheel tuneups last ten times longer.

    Your setup isn't as SPOKE unfriendly as others, but it still solidifies the feel of the bike, and comforts the brain when you bottom out on a pothole.

    BTW- do the roads in Paradise have any potholes?? :grin:
  16. 5-7HEAVEN

    5-7HEAVEN Guest

    8) thanks for ziptie tips, bama. i have quite a few of them. before i retired from VERIZON in 2002, my boss told me to clear out ALL the equipment from my telephone truck before i turned it in...and i did. :cool:
    there are more potholes in HAWAII than there are bicycles. :shock: as American tourist drivers would comment, we have the MOST potholes per mile, in the USA. :sad:
  17. 5-7HEAVEN

    5-7HEAVEN Guest

    :cool:Latest update:

    my DAHON folding bike is an EXCELLENT candidate to motorize. i originally installed a ROBIN 35cc 1.6hp w/STATON friction drive. it ran great w/ 1.125" roller, and slipped when the roads were wet, or when raining. power was more than enough, with great gas mileage and 96oz fuel tank.

    before the ROBIN engine could break in, I replaced the friction drive with a MITSUBISHI 43cc 2.2HP engine and STATON gear chain drive. owner DAVE STATON shared that his gear chain drive would be 100 times better than friction drive. i liked his friction drive a lot, so gear chain drive w/a more powerful engine is maybe three times as good as his friction drive. the new engine's 23oz tank is not as large as ROBIN'S 96oz fuel tank, but i can still drive more than 2 days between fillups.

    the gear chain drive's final drive ratio is 16.67, similarly to happy time engine and 41-tooth sprocket. the engine seems to be screaming at top speed and midrange, so i will change 18t at the gearbox to 20t. this compares to 15:1, like a happy time engine with 37-tooth rear sprocket. or maybe swap to 19t sprocket, akin to happy time and 39t rear sprocket.(i'll call Dave Staton tomorrow.)

    with PRIMO tires set at 65psi and 12" seat, the tiny folder bike is comfortable riding, powerful, nimble, but squirrely. i especially like the fact that the rear sprocket is freewheeling AND threaded onto STATON'S HD hub.

    no spoke problems whatsoever. i bought the new rim with 14g spokes and HD hub from STATON, and use tie wraps on front and rear wheels.

    with friction drive, the DAHON wouldn't fold, only bend. with gear chain drive, the DAHON can once again fold, but not fit into its travel bag. no problem, because i never bag the bike and rarely fold it.

    at 45 pounds total weight, i can still easily carry the bike to my 2nd floor apartment.

  18. grndslm

    grndslm Guest

    Yea, I think chain driven is typically the way most people wanna go. Which of those two engines do you find quieter?

    Me likey, but squirrely doesn't sound too good. Do you think the Mitsubishi 43cc is too powerful?

    What's this HD hub?
  19. 5-7HEAVEN

    5-7HEAVEN Guest


    grndslm, the Robin is quieter, especially at idle.

    The Mitsubishi 43cc seems just right for gear chain drive or friction drive.

    The Staton HD hub mounts the left-side freewheel sprocket to drive the gear chain drive. It comes with HD axle,bearings,etc.

    I removed the Mitsubishi from the small bike, bolted on a friction drive and set it onto an old Schwinn heavi duty frame. The Schwinn sat too high for my liking, so I gave it away and moved the Mits-friction drive onto a fenderless girl's Raleigh retro-glide with Rockshox fork and suspension seat post. On its maiden run, the original knobbie rear tire went flat, so I replaced it with a smooth performance tire.
    The Raleigh now handles like a charm with power and suspension, not like the squirrelly Dahon. I'll restore the 19" bike to original and use another 26" cruiser for the pocketbike engine and gear chain drive.

    BTW, the pb engine bolted right onto the Staton gear chain drive, even with an ADA goped pipe.

    Last edited by a moderator: Jul 12, 2008