LWB recumbent motor bike

Discussion in 'Motorized Recumbents' started by Elmo, Jul 19, 2015.

  1. Elmo

    Elmo Member

    I am building a recumbent to motorized. It will be a shifter bike.
    Elmo image.jpg
     

  2. Elmo

    Elmo Member

    Jackshaft

    I bought this jack shaft from Staton inc. With it I can use the engine or the pedals or both at the same time. I have two freewheel sprockets, one to the engine and one to the pedals and one solid sprocket to the rear wheel. That gives me seven gears. I used a rear dérailleur to tension the front chain so I can shift between the three front chain wheels. image.jpg
     
    Last edited by a moderator: Dec 18, 2015
  3. Elmo

    Elmo Member

    I have a Harbor Freight 2 1/2 hp engine with a 18.5 to 1 gear reduction from Staton Inc. I built the motor mounts from 1" aluminum bar stock and the plate from 3/8" alunimum plate. Lots of chain adjustment! image.jpg
     
    Last edited: Jul 20, 2015
  4. Elmo

    Elmo Member

    Throttle linkage

    I made the throttle linkage today from bits and pieces that I had lying around. Used a mountain bike brake lever for a throttle and a cheap part of a rim brake to terminate the cable. Works very well and is adjustable! Stan Smith of Stans Rock and Roll bike shop gave me a MB brake cable that was nearly long enough. I added a foot or so to it using a brass screw clamp from a ceiling fan safety cable to hook them together. image.jpg image.jpg
     
  5. Elmo

    Elmo Member

    Gas tank

    The gas tank is going to be a bit tougher due to not much room. I am looking at a seat post as a mount. The tank is sitting on a seat tube in the picture below. I have the seat post and tattered seat from the Trek mountain bike that donated the rear triangle on the recumbent? I think the seat support rods can be heated and bent to fit the tank and blazed to it. We will see. The tank is one gallon made from a piece of 6" exhaust tubing.
    Elmo

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  6. Elmo

    Elmo Member

  7. 2old2learn

    2old2learn Member

    We may need to plan a ride. For some years now Ive planned on cycling the Natchez Trace and camping along the route. Initially I thought I'd do it on my road bike.

    Now that I've built my motorized bike (drop vehicle) I think it would be just as fun doing it with power and pedal assist. I'd let you decide what time of year would be best as you'll be more familiar with your weather patterns, though I've lived in Mississippi from 1961 to 1975 and then from 1978 to 1981. After graduating from Mississippi State I took my bride and moved back home to Arkansas.

    Sure would be more comfortable on a recumbent. I figured on my road bike I'd plan for 2 weeks. On these motorized bikes we could easily do it in 4 or 5 days. Make it a week and we could lolly gag and do some exploring along the route.
     
  8. Elmo

    Elmo Member

    Friends trace ride

    Some years ago a friend and I planned a trip from the northern end to Natchez. I had built a TE clone for both of us. When the trip time came up I fell ill really ill. He made the trip alone with his wife driving sag and staying in motels. He made the 440+ mile ride in 3 1/2 days. I couldn't have made that ride on my best day but when we rode together he matched my pace.
    Elmo
     
  9. 2old2learn

    2old2learn Member

    That's a pretty serious daily pace, day after day. My goal is to enjoy the trip! Just like doing the AT in 47 days doesn't appeal to me either. I had a local man hike the 212 mile Ouchita Trail here in Arkansas in 45 hours from start to finish which means start the timer and 45 hours later he was at the other end of the trail. No fun!

    I'm a bit of an adventurer but I do it for fun and enjoyment. Early spring would be nice other than the rain. Perhaps May? Next option would be October or November.
     
  10. Elmo

    Elmo Member

    image.jpg Got the gas tank installed. Used a seat post and re shaped seat rail. A little tinkering and it will be test ride time.
    Elmo
     
  11. Elmo

    Elmo Member

    I have a small problem. I thought that the sprockets on the engine used #41 chain, not so, too wide. I have a very steep hill leaving my house and it threw the chain, tighter didn't help. I put on an old single speed chain and it slips. Neither bike shop in town has that size chain. Tomorrow I will go to (gag, choke) Walmart and Kmart to see if I can find one. It really pulls strong until the chain quits. If I can solve this problem it is going to be a winner.
    Elmo
     
  12. Elmo

    Elmo Member

    Finally it runs with no problems. It climbed the big hill at half throttle. I rode about three miles around the neighborhood and everything worked fine. I am going to put about 100 miles on it before tear down, cleanup and paint.
    Elmo

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  13. Elmo

    Elmo Member

    First Trip

    Went on a shakedown trip today. Everything worked fine. Hit 36.9 mph on flat ground and still had two higher gears. I don't think it will go much faster than this without the fairing. It will cruise at 30+ all day long. This engine has 2500 miles on it.
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  14. Elmo

    Elmo Member

    Fairing installed

    I installed the zipper fairing today and rode about 8 miles. Hit 38.8 today I think it will do 40 if I get more room.
    Elmo image.jpg
     
  15. cpuaid

    cpuaid Member

    very, very nice build, elmo! she looks like a very clean and aerodynamic build! 38.8 mph is no joke for a MAB. i've just bought my first factory built recumbent, an old used bikeE, and am ready to start a lowracer custom build for my GEBE kit.
     
  16. Elmo

    Elmo Member

    Thanks. Good luck with the lowracer. I imagine that will make you scratch your head a time or two. There is a site called recycled recumbents that has a lot of info on building a easy racer type recumbent, very solid info, if you are interested in that kind of bike.
    Have fun.
    Elmo
     
  17. Elmo

    Elmo Member

    I have a hundred and one miles on it now. I took it for a 50 mile ride with no trouble.
    Elmo
     
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