Current Cycles Prototype Buildlog...

Basically its an anything site right? HAha Anything with a motor..
 
AussieJester said:
Nice work on the dropouts matey, thats some beefy steel you used I went for 6mm and thought that was extreme
least you won't need torque thing-os for the frock motor if buyers decide to mount one....

KiM


That's kind of what I was thinking. Plus its an off road bike primarily, so I wanted them to be strong, I figured an extra couple ounces here was worth it..
 
Whiplash said:
AussieJester said:
Nice work on the dropouts matey, thats some beefy steel you used I went for 6mm and thought that was extreme
least you won't need torque thing-os for the frock motor if buyers decide to mount one....

KiM


That's kind of what I was thinking. Plus its an off road bike primarily, so I wanted them to be strong, I figured an extra couple ounces here was worth it..


Yes agreed strength over lightness any day for me, with the motor it don't matter anywhere near as much as it does with a
bicyle...IMO.

KiM
 
Its Christmas in August!!!!! Got a few goodies today! This stuff will allow me to get the RPM down to approx. 130ish at the crank at max RPM fully charged, this will allow a max speed of a little over 40MPH if the motor will pull it and in low gear a max speed of 12MPHish but with HUGE climbing power! I am hoping this little guy has the juice I am looking for in the bike, but Gwhy seems to be pretty impressed! The size and weight of it are perfect for my setup so I hope it works. I would certainly think 3200 watts geared would be plenty to do all this but I need to try it to be sure! Anyway Here are the pics, and as for the gearbox, I am running the first stage chain driven 5.45:1 before the box, so the RPM will be manageable for the box so it should be fine. The box is 5:1 and then I am going from the box down to the crank with a 2.2:1 giving the 130ish RPM. Hopefully I have figured this right but I think I did. We will see!!

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Halls are coming from Gwhy! Should be able to bench test the motor at least soon!
 
OOOK! I talked the wifey into letting me use the new Bill me later deal on Ebay, (90days same as cash) to get my new forks coming as I didn't want to miss the deal! $265.00 shipped for these BRAND NEW 2010 model!! 160mm of adjustable travel and bitchen BLACK everything!

I may have to have the knobs re anodized green though! :mrgreen:
 
Got a bit more done today! I still need to finish the trailing arm in the rear, but it is coming along nicely, I will be adding a strut along the top of the "triangle" to strengthen the arm, and give me a place to mount my shock. I also found out getting the gears lined up properly is no easy task and I will likely have to cut the frame a bit and redesign where it comes together into the bottom bracket on the gear side. Hopefully I can just notch the tube, but I am not sure that will give me enough room. Oh well, that;s why its called a prototype right? You never know what you are in for exactly until you build it!

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I also worked on the design for the drive a bit and I think I know how I am going to couple the first stage large sprocket to the gearbox. I basically need to machine a small coupler to do it right but I am not sure I will be able to since I do not have a lathe. Hopefully I can borrow one or something. I already enlisted the help of a friend here once, so I do not want to bug him again. Basically I need a shaft about .500" in diameter female threaded on one end with a mounting flange on the other that is about 2" in diameter and about .150" thick with a small locating riser on center with a diameter of 1.158" so it will locate my large side sprocket from the first stage, it also only needs to be .800" long so its a small easy part for someone with even a small lathe. I can drill and tap it for the sprocket bolt pattern, as long as it fits these dimensions. I think mild steel would be fine, I just am asking if anyone would be interested in making this for me? I have yet to determine the thread pitch, so I will get that tomorrow. Thanks!
 
Hmmmmm, trying to picture this part you need. Would a motor valve machined down and with a 1/2" shaft be a good donor or this part? Does the outside ( valve bottom) need to be flat, or the topside for mounting?
 
Hmm good idea, the top would need to be the flat side, you could leave the fillet radius underneath as it will just help make it stronger. How would you drill the end though? I have tried to machine valves and unless you have a wicked lathe it could prove to be difficult. But if you can machine it then hey I think it would be a great idea, and would really save materials! Not to mention they are pretty tough too! Must be a BIG engine to have a .500 valve stem! I have seen a lot of engines in my day, (used to do IRL and USAC motors) and have yet to see a .500" stem? What would it come out of? if you can hook me up again I would really be stoked! I am planning on getting the drive setup as soon as I get the trailing arm figured out, hopefully today....
 
OK I played around and drew up a sketch. I am going to the hardware store to figure out what thread it is I need in the end I am thinking this little deal will make the install nice and easy! I REALLY need my own lathe! It is a typical Metric thread, so you will be able to do it with just a normal tap. I just need to figure out what thread it is and I don't have a thread checker.

1ststagedrivenHUB.jpg


1ststagedrivenHUBbottom.jpg


Sorry for the inches, I need to change my sketchup to decimal, just follow the sizes I posted above or convert these...
 
Cool thanks! I figured it out though. Its an 8 x1.25 thread so if you feel like making one for me Dave I would really appreciate it!
 
OK! I got frustrated with the swing arm, so instead I worked on the reduction drive. Here is a video of the working model out of wood, I will actually be using aluminum plate, but this tested the layout and once I get this cut out how I want it to fit in the bike, I will use it as a template to make the aluminum final component. I am really happy with how this turned out! Here is a quick vid, but it looks like it will work! I am getting a 5.45:1 first stage reduction using the chain, then that feeds the little gearbox, which has a 5:1 reduction, this will exit this box with the 17T sprocket and feed the crank assy. which will have a 44T sprocket tied to the STD bike chain 44T I have mounted to the freewheel. For now you will not be aboe to pedal without the motor, but I plan on fitting a second freewheel to the crank I think to allow you to pedal with out the motor on.

[youtube]e9T7igUeFjI[/youtube]
 
By the way, I made an adapter out of a connecting nut and a washer, spent a ton of time geting it centered and such, but I think I will eventually replace it with the proper part. But as of now I do not need the part I requested above, but THANKS for the help Dave! I changed the measurements too so don't bother making one! Thanks!
-Bryan
 
Awww man, I already took a valve out of my neighbor's bus. :wink:
So was it a trip to Ace Hardware or what? Glad to see you worked it out man! And that forks gonna look real nice, I got a red Colossus that will match that just fine. I should have that shock sent out tomorrow as well. 8)
 
etard said:
Awww man, I already took a valve out of my neighbor's bus. :wink:
So was it a trip to Ace Hardware or what? Glad to see you worked it out man! And that forks gonna look real nice, I got a red Colossus that will match that just fine. I should have that shock sent out tomorrow as well. 8)

LOL, I was wondering where you would get such a valve! Thanks again though, I just wanted to do something besides the trailing arm, the geometry of clearing the chain, sprocket, and pedals was killing me! I am really stoked about the forks too! 6 Months no interest! Not too bad!

Yeah Ace hardware it was, but I will likely have to build a real piece, but this should suffice for testing...
 
Its Xmas again! DAAUM these things are sweet! They DWARF my stock forks on my current bike and with almost 7" of travel, and SMOOTH!! Fully adjustable pre-load and rebound too! They even got a little sparkle in the paint! :mrgreen:


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Also I got this from Etard to get started on the rear suspension! WHAT A GUY to help out with my build! Now I just need wheels and I will be able to set it on the ground for the first time soon!

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I would hate to give up my source just yet, but I can get them real cheap. If you want one, PM me and I will give you the same deal I got, I just don't want everyone to know where to get the good price until I have a working Prototype and bike to sell! Hope you understand!

Thanks!
-Bryan
 
Whiplash said:
I would hate to give up my source just yet, but I can get them real cheap. If you want one, PM me and I will give you the same deal I got, I just don't want everyone to know where to get the good price until I have a working Prototype and bike to sell! Hope you understand!

Thanks!
-Bryan

nope...don't get it at all... but shall make mental note of your decision to do so for sure... :wink:

Nice forks..BTW

KiM
 
Kfong: these are common pocket bike reductions.
I hope you got a "hook up" for a better price than this:
http://www.scooterpart.net/products.php?id=402

After all the free info you have gleened from this forum you can say this in clear conscience?
whiplash said
just don't want everyone to know where to get the good price until I have a working Prototype and bike to sell! Hope you understand!
dude......that just wrong........sad & wrong.
 
You have to hustle really hard to pull anything over on this crowd. From batteries, to motors, to everything, they know the wholesale schedules and won't hesitate to post them up. Trying to withhold sources is treason! It was a bit of a shock for me coming here, but after a while I realized it was the community trying to lower prices and keep everybody in the loop on the current state of the market.
 
Well to be fair, Bryan did offer to send Kin the box at the same price, and to send it to him. He's just trying to get a prototype out before people realize the usefulness of this little box, if it is that good, we'll see. Nobody has tried it on here to my knowledge.
 
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