school project, maybe.

[r_chez_08]

they look okay, but do you need a keyway?

 

[r97]

well i would plan on bolting them between two keyed hubs, and putting them on a 3/4" jack shaft.

i have a question about my clutch, i have a 5/8" bore max torque clutch, but i'm likely going to use an engine with a 3/4" crank. is there a place i could by a 3/4" hub for a reasonable price? should i send max torque an e-male? i'm talking about part #12,

 

[r97]

no info on the clutch?

i finished! heres the sketch-up, i better get to work
http://sketchup.google.com/3dwarehouse/details?mid=282e64ae2e558fcec2d0e3832d9c9821&prevstart=0

 

[powerstrokekid]

Sketch looks good!! Good Luck with building it.

 

[bighead]

Hey R97, I was thinking about trianing wheels for this mono wheel. You could fab some type of little kid trailing wheels to stick out the sides. This would make testing the ride easy. And easy to learn how to ride. I would think you would crash this many times learning how to ride it. You can always take the wheels off. Or put them on when your friends right it. Just a thought.

Are you using only 3 rollers?

 

[r97]

that might be worth a try just to get comfortable on it, once i try riding it i will think about adding them.

any opinions on the strength of the frame?

 

[bighead]

You could fab a kick stand on it too.

Your 3 rollers do not match up on the sketch. Also do you think 3 rollers is enough?

I like your frame. It gives you max room. You could bend another round bar for the frame as well. Just make it a little smaller than the wheel. Then make brackets off that for the rollers.

I am pondering ideas for a tire as well.

 

[Bluethunder3320]

i would go with 4 rollers evenly spaced

 

[r97]

a kick stand would be nice, in fact, it would be very important as not to spill gas all over the place and cause other problems when its not leaned up against something.

as for the rollers, i think 4 evenly spaced would transfer most of the weight to just the bottom one. it might be worth trying to add a fourth roller directly under the seat though, but i'm still not sure its really needed.

as for the rollers not being evenly spaced, i put that one roller there so that it would be directly under the engine, and it will look better once the transmission area is covered with sheet metal.

 

[r97]

this was done quickly but here ya go. one thing about this is that the wheels would need to be setup perfect or i would be putting most of the weight on just one.

 

[bighead]

about your tire? I would call a place that does tire retreads. Or a place that restores old tractors. They might have ways to bond some rubber to your wheel. Thats where I would start.

Also I would go in person. Tell them it for school. You will get much further with them this way.

 

[r97]

thats an idea, but it sounds expensive! is there a major fault in just riveting a few tires up? i have a decent amount of old bike tires lying around too so it might be free!

 

[r97]

maybe upgrade the bottom tube pieces to 2" sq tube?

 

[bighead]

thats an idea, but it sounds expensive! is there a major fault in just riveting a few tires up? i have a decent amount of old bike tires lying around too so it might be free!

It would be bumpy. Is what I was thinking. Unless you can find some thick rubber and countersink the rivets. What about some thick rubber water hose. or large hydrolic hose?

You could rivit the first layer of rubber on the wheel. Then bond the outer layer or rubber to the rivited rubber.

Or rivit thick water hose to your wheel. Then bond bike tires tread to the water hose. Epoxy or the like.

Hmm just thinking.

 

[r97]

i was thinking about riveting the side wall of the tire to the side of the rim. if i'm correct your thinking i would rivet the front of the tire to the front of the rim correct?


EDIT: also that spring that presses the drive wheel to the rim, i was thinking of moving it to above the js bearings, or maybe replacing it with a turn buckle.

 

[Bluethunder3320]

youre going to need a strong spring against bare metal.

a 2 stroke may be better because most are all angle.

 

[r_chez_08]

I think the turnbuckle idea sounds better

 

[r97]

yea, i will probably go with two turn buckles.

as for the two stroke, i'm not sure what i would use. it would need to be about 5hp, and cost about 30-40 bucks.

now, i have two questions:

1. can i buy the parts to convert my 5/8" bore clutch to a 3/4" bore clutch?

2. should i upgrade the bottom section of the frame to 2" sq tube, or is that un-needed?

 

[r97]

heres with a 1.5" bottom tube,

here is with the 2" bottom tube,

my question is- is the 2" tube over kill? or is it perfect?


thanks!

p.s. i'm going to e-mail max torque about the clutch.

 

[redsox985]

How about the spring from a mountain bike's rear tire to press the wheel against the BIG wheel?