My project(s)

Ok folks, here they are, pics of the Super Sport and the axle. The frame of the SS is awesome, almost no trace of welds, it's a smooth bike. The speedo is a Sears unit. Brooks saddle, Weinman brakes, and of interest...no serial number anywhere on the bike.

The axle is a 3 speed. Forward, reverse, neutral. It even has a disc brake, small, but it works. I'll have to get some de-gunking spray, and get the whole thing cleaned off, but I didn't see any ID tag of any sort on it. Maybe it will show up upon de-gunking.


I'm throwing the pics in a Photobucket folder for viewing, since I use dialup at home. I want to be able to see responses to the thread lol.

moped pictures by theconstantevolution - Photobucket

Someone on MotoredBikes.com commented on how nice the Schwinn looks, so I'll put my post here as well.

Yeah, I really like this Schwinn. I'm actually thinking about not MB'ing this one.....

I have an older Raleigh roadbike in my shed as well. I think its a Raleigh... I know Schwinn's have value, and if I'm gonna mod one of the two roadbikes I have, I'm thinking hard about modding the Raleigh instead. The Schwinn is just too nice lol. I'll upload pics of the Raleigh later.

Also, I was inspecting the transaxle earlier, and I was wrong, it isn't a single speed. Rather, it is actually at least a 2 forward speed transaxle. Nah....not gonna make a pusher from it after all. Smaller pulley, modded vertical shaft 4 stroke..... I smell a go-kart in the works

Regardless of which roadbike I choose, I do plan to remove the ramhorns. I have problems with my wrists and hands, and it's hard for me to stay on them for too long anymore, even when riding regular. I'm looking at these:

BULLHORN TRACK BIKE FIXED GEAR HANDLEBARS BLACK 42CM - eBay (item 350188398429 end time Jul-07-09 12:09:59 PDT)

Not straight, but they will allow me to not lean down so far on them, so it shouldn't be so bad for my wrists.

Ok, being the undecisive plan-whore that I am...I don't know if I will put a kit on my Schwinn. The other day I was coming back from work on my old Mongoose dual suspension mountain bike, and on a sugar rush I was easily pedaling 20mph. I just about keeled over from it, but the bike felt solid and stable as it went over bumps and dips at speed.

So it got me thinking. I saw that Morini-type knockoff in chatbox, and I found the guy's website (I posted that in another thread...buy it from his site, it's cheaper). All I would need to do is get a clamshell and sprocket from Manic, buy a tensioner, get an exhaust, and make a mount.

Here is my line of thought:
I can use a piece of C-channel, like what I see used in friction-drive kits, to mount the motor onto. To mount that to the bike, I can use lengths of angle iron on the sides bolted to the channel and clamped to both the upper and lower legs of the rear swingarm. If I can do both front and rear pieces of angle iron vertical, and spaced right, I can mount the motorcycle battery (for the lights and GPS) in between.

I will use a 40t sprocket to start with, and as I go along I might drop to a 36t. For starters I will use a regular exhaust pipe, but I do plan to add an expansion pipe, and if I should feel squirrelly enough....a nitrous kit for an RC motor.

For fuel, I'm not entirely sure of what tank(s) I will use, but it/they will be mounted on a rack clamped to the seatpost. I don't foresee having more than a gallon and a half up there, so it should not present a problem.

All in all it should be a pretty simple setup. The knockoff uses a centrifugal clutch instead of a standard clutch, so the only cable I will need to run is the throttle. The wiring for the headlights and taillights will be kept tight in a single loom running to a 4 unit fuse block running off the battery. 1 fuse for each headlight/taillight, 1 fuse for the power outlet for the GPS charger, and 1 fuse for something else, such as a horn from an older Buick or Cadillac (nice and loud). To charge the battery I will mount a 12v solar trickle charger on the back of the rack for daytime when I'm out riding during the day, and I will also have a 120v battery tender as well. If I get lucky, perhaps I can even revamp a wheel generator from an old light to put out 12v.

I like my Mongoose MTB, and have been fixing it up bit by bit since I received it, and it is getting to be a decent ride. I need to replace the current tires with a pair of Panaracer Uff Da's, since I am a heavier rider (the Uff Da tire is made for urban riding and jumping according to the manufacturer, so it is built with heavier construction. Perfect for a heavy rider with a motor), and I want to replace the worn out RS front fork with a triple tree type fork, only right now I can't find one for cheap. Perhaps I will get lucky on EBAY eh?

I can't think of anything else right now, so that's it for now.

ain't even close to a Morini

Your idea ain't gonna work....gearing???

Morinis and Grubee 2 strokes have internal gearing of about 4.1 to 1

20 tooth on the crank and 82 tooth on the big clutch gear = 4.1 to 1

Your pocket bike engine does not have this internal gearing and
runs at full rpm like a Honda GX 50

You need a gearbox or a jack shaft

Did you calculate your gearing?

Yes..we are already past the "not a Morini" part. As I said in the other thread, the fellow who originally linked it in the chatbox said it was a Morini knockoff, and since I don't know Morini motors, I took his word for it.

Regarding gearing, I wasn't aware of the internal reduction on most motors. If I should need a jackshaft, so be it. What would the recommended gearing be on the jackshaft, assuming an 11t on the motor, and a 40t on the wheel?

26" rim, outer diameter of the tire is approx 29" I think, which is a circumference of 91.1046 give or take.

Or, in lieu of the pocketbike motor, what would be a good alternative? For suggestions, bear in mind that the motor will be mounted on a piece of channel over the back wheel, as this is a full suspension bike it will be going upon.

Ok, I was thinking about it, and now I'm wondering this:

HarborFreight 2.5HP 4stroke. 79.5cc, 3600rpm max.
centrifugal clutch with 10t gear
80t sprocket on the rear wheel.

This would come to a 38.8mph top speed. Given that tires vary, and the circumference will be a little different at the outside edge of different tires, this would translate into a top speed of 37-38.8. Not much a variance, but I thought I would note it.

My question, to Forbisher, is do you think thes HF 2.5hp would pull hard enough from stop with a centrifugal to run the above setup? Or should I consider an even lower (numerically higher) wheel sprocket? Top speed is not my priority, I just want a good solid and strong setup.

Interesting.....

What diameter is an 80 tooth sprocket?
Andy will make you one that big for $67

Where are you going to mount the engine?
Rack?
How much does that engine weigh?

Let us know how it works out

PS: that is a drive ratio of 8 to 1

I honestly don't know the diameter, but I am assuming that tooth spacing stays the same and that the size would be a linear increase. Do you think the HF 2.5 would pull hard enough from a stop with the 10/80 setup, or should I still look into a jackshaft setup with a different gearing setup?

Howdy TOS. I don't see why it would not only pull it, but do it well. Their tech folks have answered my questions in the past and seem very well versed and like most tech folks, love MBs. This is their question # 1-800-444-3353 I couldn't find any information on tourqe on the specs page. http://www.harborfreight.com/manuals...7999/97964.pdf Man, an 80T is gonna look cool. Never having built or even seen a set up like your thinking, I certainly can offer no advice. Have you ever dealt with Max-torque? Really great folks and could advise you well.

Clutches


Also, Znanerider here has worked a lot with that engine. Shoot him a note and invite him to your thread. He does some great stuff and knows that engine.

In any event, I am greatly looking forward to seeing what you come up with. Please keep posting. Half the fun is the scheming and planing! (...and half the pulling your hair out, snork)

__________________
I want 2 ride my bicycle

My god, I love you for posting that manual. It showed me a couple things I was wondering about.