lotsa_mpg's motorized bike

Discussion in 'Photos & Bicycle Builds' started by lotsa_mpg, May 20, 2007.

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  1. lotsa_mpg

    lotsa_mpg Guest


    Here's a pic of my Dax 70 cc Vagabond. Note the dual stands...I needed to add a middle one after installing mirrors, headlight, speedo, etc to the bars. The extra weight on the front of the bike made it want to fall over with just the factory rear stand. I've got close to 400 miles on this rig now and it's been reliable so far. Not even a leaking gasket and I haven't laid a wrench to any bolt since I put it together. I know I shouldn't be saying that cause it'll likely end up breaking tomorrow.


  2. gone_fishin

    gone_fishin Guest

    nice looking bike! she caught my eye as soon as the page loaded :)
  3. lotsa_mpg

    lotsa_mpg Guest

    remote choke lever


    Being a six speed, this bike had a RH twist grip shifter for the rear derailer which I had to ditch when I installed the throttle twist grip. I ended up finding a downtube mount dual shifter on an old road bike in our local garbage dump and decided to use it for a shifter and mount it on the LH bar. But what to do with the second lever when I only had one derailer to control? The answer came to me the first time I fired the bike up. Reaching down to operate the carburetor mounted choke is a real pain in the buttocks, so I built a bracket mounted to the carb and installed a choke cable routed to the other shift lever. I mounted a return spring on the cable and it smoothly returns to the open position when I flick the choke lever off. It makes for much easier starting and I don't have to take my eyes off the road while the engine warms up. No doubt, many of you have already rigged something like this up, but I just thought I'd show what I did. I snagged an NOS 1960's Huret speedo on ebay a couple months ago and just installed it last week to replace the black plastic one I first had on it....I kinda like the retro stuff alot better. The newer speedo I first had on it was calibrated up to 60 mph and I thought that was just a tad optomistic for a bicycle (engine powered or not). It pulls 30 mph on most days and will occaisionally bend the needle over to about 36mph when the conditions are just right.
  4. JosephGarcia

    JosephGarcia Guest

    Very nice, similar to mine


    but shinier. I like your mirror style.
  5. lotsa_mpg

    lotsa_mpg Guest

    mountain dax



    Thanks for compliment, augidog...I appreciate it. Here's a couple pics of the mountain bike I just put together for my cousin. The thing really handles sweet and seems to vibrate less than my cruiser. I suspect the lower vibes might be due to the somewhat higher engine mounting location that I had to use to fit it into the frame. I think by being mounted higher, the engine itself serves as a bit of a stressed member...possibly damping the vibes to some extent. That's my theory anyways. The bike he brought me had a huge diameter front downtube and I just didn't like the idea of drilling a hole through the frame in order to mount the engine. So, I ended up fabricating a custom aluminum mount that goes over the top of the frame tube with a curved metal plate going around the bottom. It proved to be an awful lot of work to get it right, but it turned out pretty sweet...though it is the main reason I had to mount the engine as high as I did.....Yet, it seems that the higher mounting has worked out for the better and the bike really handles well. Actually, it's more fun to ride than my cruiser, but I think the cruiser trumps it in the looks department.

  6. Guest

    Guest Guest


    Nice jorb on the fabrication of a few bits too.

    I was thinking of making a remote choke lever, but I have too much fun reaching down with my left hand and operating the choke while I pedal down the road. Plus I saved a few ounces of weight.

  7. Nice work lotsa_mpg.

    Nice bike.

    I'll be looking for a leaver for my choke to install for the weekend. :)

    Could we get a picture of the carby end of your cable choke?
  8. lotsa_mpg

    lotsa_mpg Guest

    choke mount


    Sure thing. Here's a pic of the choke cable bracket. I've been meaning to to remove it and give it a coat of paint, but I haven't got around to it yet.

  9. azbill

    azbill Active Member

    nice clean solution
    well done dude !!!
    8) 8) 8)
  10. Thanks lotsa_mpg.

    It's location looks like it would handle the arc of the leaver travel nicely.

    Before seeing this I had thought about mounting a bracket of some sort to the adjuster screw and nut at the top of the carby but thought it may vibrate lose.

    Does the nut need tightening at all?
  11. lotsa_mpg

    lotsa_mpg Guest



    Here's a couple shots of the bracket from a different angle so you can get a better peek at it. I just used a bicycle brake cable as a choke cable. I drilled a small hole thru the top side of the choke lever arm, ran the cable thru, then secured it with a brass cable furule located under the choke arm. So far, the mounting bolt for my bracket hasn't loosened....but now that you mention it, I'll keep an eye on it.

  12. JosephGarcia

    JosephGarcia Guest

    Does the lever you attached to it let it go up and down, or does it only pull the lever up, so you have to push it down with your hand again.
  13. lotsa_mpg

    lotsa_mpg Guest

    I loosened the choke butterfly on the carb so that it moves easily up and down allowing the spring to return it to the choke off position when the lever is moved to the off position. The derailer lever I used to activate it has a tensioning adjuster which can be tightened to keep the lever set in whatever position it is adjusted to...or it can be backed off to allow the lever to return to the off position when ever you release the lever. If you set it that way, the return spring on the bottom end of the cable will automatically pull the choke to the open (choke off) position. I do prefer to have the tensioner on the lever set so that it holds it's position when I take my hand away from it. Then, I just adjust it as it needs to be. My motor is fairly cold blooded and seems to need a fair bit of choke upon starting and during warm up, so this works best in my case. However, a buddy of mine has a PowerKing engine that seems to need very little choke and warms up quite a bit faster than my Dax engine (maybe it's because of the smaller cooling fins...I dunno). If I was installing a remote choke on his, I think I'd just set it to automatically return as soon as the lever is released.

  14. srdavo

    srdavo Active Member

    Re: choke mount

    very cool idea!!
  15. Excellent pics.

    Is the bracket made of brass?

    What type of weld is it?
  16. jol

    jol Guest

    I'm guessing rusty ol' iron and mig :)
  17. lotsa_mpg

    lotsa_mpg Guest

    The bracket is just mild steel. I started with 1/16" x 3/4" flat iron and ended up trimming the width down to about 5/8" to shave some weight and look less obtrusive. I just used a small 110 volt mig to weld it. I had a length of 7/16" solid rod which I cut to a little over 5/8" long. I drilled a small diameter hole all the way through it...and then, then ran a larger diameter bit through the same hole, but only about 3/8" deep. This allows the metal end on the choke cable (actually a rear brake cable) to recess into the large hole and allows the inner cable to pass right through the rod. I then migged this piece onto my bracket.

  18. Thanks for the detail.

    I don't have a welder so while reading your last post I am thinking how to do this without using a weld.

    The first thing that popped into my head was maybe using part of a rear brake caliper and bending it to a similar shape.

    That way I could just insert the cable into the existing mount that they have and put the spring on the other side.


    I have seen some other posts here but I have searched on 'cable choke' but could not find anything.

    Hey augidog if you are there I know you could find the links!

    Are we officially out of topic now? :eek:
  19. iRide Customs

    iRide Customs Member

    Sweet little mod ya got there...I as a matter of fact I was just tossing around ideas in my head for something just this morning.

  20. JosephGarcia

    JosephGarcia Guest

    A little after I posted that comment, I barely saw the spring to push it down. I missed that before and wondered how it moved.