Eliminating the driven sprocket

Yes its a two ring crank...and its not going any other way than with a jackshaft. I built this tonight well I started at noon today and just stopped a few minutes ago. But this is going to be my test bed. Dont ask me why I build em to hurt my back but I have this one bike I want to build and I just cant get it right. I might have to go to a straight bar at first to be more upright.
But heres my schwinn with the front freewheeling crank. Im only going to run the 48cc motor that I have waiting for the testing.

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nice. i look foward to seeing after you ad the bicycle motor!

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I dont know after getting some sleep and looking at it now....I might need to rethink it a bit...just not happy with the looks of it and again not comfortable to ride. Ever since I started enjoying bikes again and motors on them I wish I had one for what ever I felt like that day. Cruising in town riding a dirt path or hitting the highway and taking a long ride. I was trying to have a bike set up for each of these that all I would have to do is take the motor off one and put it on the other and go that way I didnt have a bundle wrapped up in motors gears and all the parts needed. I think with this set up that Ghost and Pablo have made puts me that much closer to enjoying my plan. Now, it went from having to have everything else from the original kit for each bike to basically a throttle and clutch lever and tank and the crank. But I think that anything that we can do to keep it as close to just what the bike came with will reduce our failure points and give us more enjoyment and less frustration.
Kinda like that hydrogen car they came up with I think they call it skateboard that you can change the bodies off of for what ever you need at that moment. Van truck sports car...thats what I would like to do with this setup.

Pablo, Ghost: You guys are too much! That is bitchin'!!!

I was at work and talking with another guy two weeks ago about doing something very similar... a jackshaft setup to my motored Schwinn cruiser so I could try a Shimano Nexus 7-speed hub I have. But it was just talk and it was about using some sort of sprag bearing. A freewheel makes perfect sense... Nice to see it become a reality!

I forgot to add - even with the set-up on my bike being a bit too much toward the high end....I can indeed take off quite easy with the clutch and a little throttle - fun ahahahha!

OTOH - get used to starting it with leg power! It seems a bit odd, but really not a huge issue once you realize a hill doesn't help you start.

As for production "issues":

1) As noted the ratios turned out to be a bit different than we expected. On the negative side, one of the gears is not made in a higher # of teeth! We thought we were stuck - well we were. The bike goes fine, and some guys will really like it for flatland speed. But it doesn't have the low end gearing to allow the little beast to spin, and on the high end the top two gears are just HIGH. However, one of us two board members had the idea to get a smaller custom gear for bike chain upper driving gear. Yahoo - it can be done - I ordered the gear and it shipped today. The proprietary steps I will need to do next.....I need to see how the top end will be. On the positive side - if this new gear works, then we will sell the kit with the lower gear and offer the larger gear and a purchasable option later. It's a bit expensive for us to have both at first, but we'll see.

2) The actual installation went fairly quick. The new rear engine mount design is slick!! I mean GHOST0 SICK! You gotta know how to work on bikes - the crank stuff is not that hard, but experience is required. We will supply the new longer crank, crank arms, etc. You'll need a Park crank puller tool. We can suggest the tool#. It works really easy, and isn't too expensive. It would be nice to have a retainer nut tool as well, but not required.

3) Every bike and engine are different, so it requires your noggin. You will need to do some minor filing on your engine flanges and case to keep the side plates all aligned and such.

4) Yes - you need to take the engine out. It's worth it. We supply all the parts and hardware.....but you will need a chain breaker and some of the normal tools.

5) I started working on the installation manual with the photos. Need more photos!

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Well when ever you get the jackshaft kit ready to go let me know I'm in NEED for SPEED ok really I just like the whole concept compared to what we are doing now. I'll take it in any piece part that you want to sell.
Terry
ok next post will be a begging post....!

Here it is on my bike:

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looking good paul! i can't wait to here more and get one when they are ready for the public!

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Me too ....(wiping the drool from my mouth)....the suns up and the new motor
(without a jackshaft kit)is just sitting on the bench crying to be put on and ran. The bike (without a jackshaft kit) is wanting them stupid little rubber thingys that stick out all over that scream NEW BIKE NEW BIKE wore off. And my butts not numb anymore from riding(without a jackshaft kit) it is numb from waiting.... ok well it used to work in the movies way back when...geezz I need help (jackshaft kit)

Pablo - Is that freewheel you are using for the crank sprocket something you made? Also you could use a larger jackshaft sprocket from the engine, there should be enough room near the wheel if you get out there, that would lower the gear ratios. This is looking good, and it would be nice to be able to cruse with lower engine speed. Have fun, Dave

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