pelotonracer

(cover)





Some info here: https://www.bikeforums.net/road-cycling/291845-did-personal-best-tt-double-disks.html

Raiyn

You do realize why the pros don't use full discs in the front right?

tubescreamerx

could you provide close-up pics of the zip ties? also, is there anything to secure the edge of the disk to the rim/spokes? wouldn't it be better to have another set of zip ties near the rim?

pelotonracer

I already closed the disc, as in, I put the other side on already... I would be a pain to take it off again to show you the insides.

Oh, and I think I tied this wheel up with fishing line. I used zip ties for the rear.

Nothing is attaching the edge of the disk to the rims. Although, I was thinking I could put some plasticine around the edge to stop the wind from getting in. Or, if I wanted it to be a permanent disc, I could just use some rubber cement.

cedricbosch

What kind of material is that? looks like some sort of congressman poster.

Tri JP

This design is pure genius. You're foolish for putting this on the internets, as it will be very easy for someone to steal your design and get the patent first.

pelotonracer

Exactly right. Corrugated plastic election sign.

cedricbosch

Yeah right, totally not safe enough.

pelotonracer

Safety is overrated. Besides, in a TT (which is obviously the only thing I'll be using these babies for), there's no one anywhere near you if, and that's a big IF, 7 handcuff-grade zip ties manage to break.

Raiyn

From Sheldon Brown:
Disc wheel
A disc wheel is a wheel with solid sides, instead of spokes. Although disc wheels are heavier than spoked wheels, they have less air resistance, and permit a cyclist to go noticeably faster. They are not usually used on the front, because they can cause severe handling problems in cross winds. They are not usually used for hilly conditions, because the added weight is too much of a disadvantage on the climbs.

The illustration is from Archibald Sharp's Bicyles and Tricycles, originally published in 1896, reprinted by the M.I.T. Press in 1977.

The front wheel has cutouts to reduce steering problems that result from crosswinds when disc wheels are used on the front.

cedricbosch

Oh yeah, I completely agree with you, and I think your creation is the coolest thing ever. I'm all for DIY projects, but I'm just saying that trying to get a patent for a folded piece of plastic would be ridiculous.

Props to you!

By the way, how did you get the plastic into a cone shape?

JonnyV

Tri JP

What do you mean?

JonnyV

Oh yeah, I forgot to put "I agree!" with that...so, I agree!

cedricbosch

I was responding to this post-

pelotonracer

To get it in the cone shape, I just cut along a radius, folded it to the right curvature, and thencut out some extra material on a radius (think of it as cutting a slice out of a pie).

For those guys berating my use of a disc in the front, firstly, I'm a pretty big guy and I can handle the crosswinds- and also, you realize that a disc in the front saves a LOT more energy than a disc in the back, because the wind is still "pristine", right?

Raiyn

Famous last words

slvoid

Are you familiar with the term "reconstructive facial surgery"?

KyleKranz

pelotonracer

I don't see what the big deal is. I've used the front disc maybe 3 times now, it's perfectly safe.

stea1thviper

i guess you know something the pros dont?

Namenda

Damn, looks as bad as Joe Theisman. Can you say "external fixator"?

Raiyn

The name of a good plastic surgeon

lowracer1

https://www.wisil.recumbents.com/wisi...ic%20sheeting:


Actually , the recumbent guys beat you to all the methods of making disc wheels.

Tri JP

Dude, Cedric. I was kidding.