Can't use a Gebe drive ring on 20" wheel?

Discussion in 'Rack Mounted Engines' started by Alaskavan, Aug 13, 2007.

  1. Alaskavan

    Alaskavan Guest

    I've got a trike coming that has a 20" rear wheel. From what I 've read, you can't use the gebe drive system on it. True? Work-arounds?
     

  2. gone_fishin

    gone_fishin Guest

    don't know where it is, but someone cut the top off a 5-gallon bucket and made it work, i think?
     
  3. bamabikeguy

    bamabikeguy Active Member

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  4. Alaskavan

    Alaskavan Guest

    Thanks guys. Interesting.That'll give me something to think about.
     
  5. 5-7HEAVEN

    5-7HEAVEN Guest

    :cool:Alaska, i believe i read on GEBE'S site that their installs are for 24"-26" bikes.


    Myron
     
    Last edited by a moderator: Aug 15, 2007
  6. Jim H

    Jim H Guest

    So true.
     
  7. Alaskavan

    Alaskavan Guest

    We'll see. It could be that there is enough room to mount a 24" without too much modification. I'll wait 'till I get the bike before I start solving probs that I may not have. Thanks for your input.
     
  8. bamabikeguy

    bamabikeguy Active Member

    Van,

    Re-reading (and re-emphasizing my fading eyesight), I note you said "trike"...

    Motorizing Trikes is going to be very important in the future, especially low to the ground like your, with 20 inchers, BUT before ordering any kind of kit, it would be great to hear more about the trike, especially what kind of braking system it has.

    Those expensive Worksman have calipers in the front/ coasters on the rear and a parking brake.

    I am getting very leery of depending on front brakes only, like those two cheapies I built (the Velo and the Ted Williams).

    However, having the engine under the saddle, like the R/S Subaru/chain drive, with remote 96 oz tank in the basket seems right now the most do-able system for a trike.

    With GEBE I had to reverse the position of the front brakes, from in front of the forks, to "behind" the forks, so it wouldn't interfere with the mount/strap and belt.

    Not as important on the Worksman, very important on the cheapies.

    Because, if there is only one set of calipers, the position swap seems to be a "negative" for effectiveness.

    It's hard to describe in text, but the engine tugging foward, with the single system of brakes/pads behind the momentum, you really have to have a LOT of lead time to stop.

    I think it has to do with those pads facing upwards after I reversed the position, making them hard to keep aligned on the rim.

    What model have you ordered specifically?

    A little info early will probably pay off immediately for you, and others, I just don't want to mislead anybody in these early stages of tricycle motorization.
     

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    Last edited: Aug 16, 2007
  9. Alaskavan

    Alaskavan Guest

    The trike is a Whiz Wheelz Zoomer. Tadpole style. Discs on the front wheels. No rear brake. The theory is that the low center of gravity combined with brakes on both front wheels makes a brake on the rear unnescessary. I'll find a picture to post.
     
  10. Alaskavan

    Alaskavan Guest

    Here's a picture of it. The absence of a rear brake will make it easier if I do have to change to a 24" wheel.
    Thanks for your input on this. It's so cool to have voices of experience behind you when working on something like this.
    Well I'm off to look at some glaciers. (I'll post some pics of my TREK out there when I get home). Later.
     

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  11. bamabikeguy

    bamabikeguy Active Member

  12. Alaskavan

    Alaskavan Guest

    That's the ticket. I like the idea of getting some distance between my ears and the motor too. Thank you.
     
  13. Alaskavan

    Alaskavan Guest

    Improvised Spoke ring, 20" wheel

    I'm not sure I'm too hot on the idea of plastic. That does give me a good idea of the diameter. Do you think a ring could be fabbed from a smaller diameter rim? I guess I'm asking about the width of the belt, and how far into the spokes the ring should go. Perhaps 2 rims married together? Just blue sky thinking here. If I'm going to ride it to Ocean Park, it'll need to be sturdy/reliable.
     
  14. perry44

    perry44 Guest

    GEBE rings

    I don't know about 29 inch tires, but I do know this.
    I bought the kit in feburary and have been running it hard.
    The guys at the shop are excellent help but its not really user friendly. After the truck hit me the belt would not track at all and no matter what I tried (twisting thew rack , moving it up and down on the axel, washers under the bolts trying to change the angle) nothing worked. That was the first 10 mile hike i hade to take pushing the bike home. I bought thier wheel along with the kit and I guess I was too hard on it even though I dont off road it or anything other running it hard on the streets, becase it is trashed now. I had an extra 36 spoke wheel here and am, trying to put thier ring on and no luck! So I went looking for a new wheel and found one at REIs and was going to buy it and then remembered it couldn't have a quick disconnect. So I had the bike shop guy put the old axel from GBEs wheel into the new wheel , after walking home 4 miles to get the old wheel!!! well, luckly they were open yesterday and i walked up there and picked the wheel up and brought it home, thinking all right i will have my only transpo back tomorrow. NO LUCK!!!:(((( The ring doesnt fit on the new wheel either so i called thier shop and they swear it will fit on any 36 spoke wheel but I am SO STUPID I cant fit it on this one either..,. Looks like I will need to order a new wheel and ring from them for another 125+. You know I love this thing when it is running but I tell you what. You got to be an expert in bike and engineering to keep it running. So far a new rack and belt, (that took 3 weeks to get here). and now a new wheel and ring.:((((((
     
  15. Alaskavan

    Alaskavan Guest

    Bamabikeguy has posted some real good info about rings and how he mounts them. I don't know how hard he rides. There's also at least one very good site on the net about building your own wheels. Just google Lacing Wheels.
    Hope you get it ironed out.
    When gas gets REALLY expensive, you may be thankful that you became an expert in bike engineering.
     
    Last edited by a moderator: Aug 20, 2007
  16. Dockspa1

    Dockspa1 Guest

    Hey Alaska,
    If you do use a 20" steel rim, instead of using the rusty thick coat hangers, get your self a roll or can of the thin guage stainless steel and a fencing wire twist tool. You won't be sorry.
    Man I miss Petersberg, Alaska.
    Go look at your **** glaciers!
    I'm jealous!
    Hey you want to see a million pictures of corn fields?:lol:

    The old Master Baitor.
    (you dirty minded people).:-x
    My brother and I worked as baitors on a Halibut boat in Alaska .:p
    Ride on!
    Doc
     
    Last edited by a moderator: Aug 20, 2007
  17. Alaskavan

    Alaskavan Guest

    Thanks Doc
    Sounds like a good idea, I'll keep my eyes open for some stainless wire.

    Van
     

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  18. Jim H

    Jim H Guest

    Alaska, maybe a 16" rim, spoke mounted with some fabricated brackets ;like whizzer uses? Or perhaps the 16 outer circumference would match the inner circumference of the 20, hmmm, hmmm? Interesting!!
     
  19. Alaskavan

    Alaskavan Guest

    I think a 16 inch rim sounds about right. Doubt I'll find one in aluminum, steel would have to do. Not certain I will pursue this method on the trike, but it's good to have the knowledge. I feel confident that If I do go this way, I can make it work. Thank you all for all your input.
     
  20. gone_fishin

    gone_fishin Guest

    wow! i just saw your trike...that'll make a kick-butt GEBE runner for sure!
     
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