Re: A Frame Design.

and you are proly thinking "that outer sheet will hit your knees!!!"

yes, its a tad big in the photo, it will proly be half the size on the
real frame.

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Wouldn’t your legs/knee hit that huge plate sticking out of the side?

Edit:You just said it.

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It looks like you should give that design a go. Some suggestions would
be to make some more reinforcement where the seat tube meets the arch,
and use thicker metal 9than what you would normally use0 at first, then
if you think its too strong, you can always make a lighter one if you
want. Also, it would be a good idea to put some small dia. bendable tube
(that you can buy at pet stores for fish tanks)alond the outer edge od
the brace, because I could see some painfull cuts and injuries from that
sharp edge.

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Here is a Non Knee-Slaghtering version

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Evan Byrne said:

[the frame] is very light, and extreamly rigid

It sure looks light, but I wonder about rigidity for two reasons:
First, tubes are generally the preferred shape for lightweight, rigid
frames. Why aren't bicycles made using this shape if it is an
improvement? Second, I don't see how your design resists twisting.
If you crank on the handle, twisting the seatpost, what stops the
frame's legs from twisting?

My advice is build it with thick enough metal to withstand the
stresses. Also, follow the advice of others and do something about
the exposed egdes.

Ken

what about a crown reinforcment like this?

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OOOOOOOO!!! CHROME!!!!!!

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Looks to me like it would weigh about the same amount as the tubing
equivalent. I can picture the amount of flat sheet metal you've got
there being bent into about the same size tubing on most unicycle
frames. Looks very different to standard uni frames though. 🙂

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Evan Byrne said:

*what about a crown reinforcment like this? *

The twisty part is the fork legs. I can't imagine flat stock being as
rigid as tubing of the equivalent weight no matter how you arrange the
pieces. The current design, with only the one small rib down the side,
looks extremely flexy.

It would probably take several tries to get something with good rigidity
at a reasonable weight. And that means making them of course. You cant
test designs in a 3D graphics program...

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How would a crown like this work?

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Tony Melton has a similar crown on his trials uni frame. I think it has
flat plates instead of tubing on the horizontal bits. His frame looks
incredibly cool...still remains my favourite ever trials frame.

Andrew

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This frame from a video doesn't do it justice but I'll post it anyway...

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are those loli-pop bearings?!?!?!

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Uhh evan what are you riding in your avatar it looks like a Coker, but
it also kinda looks like a 36 inch Ultimate wheel.

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im leaned over in a steep turn on a coker

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Okay thank you, I didnt see the seat so I was about to say wow you look
pretty good at the Ultimate wheel. Speaking of Ultimate wheel can anyone
ride one of those efficiently enough to make it look good? I wanna see
a video or something of it. And also an Impossible wheel.

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Once i gut my stuff to build my 2 16"s i will make a double crown frame
for the trials/street one.

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this would be meerly for the cool factor.

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