Custom hubs

If you have a model, please post pics 🙂
Very intresting topic I say.

Peter M

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Jerrick said:

I wonder if more people will start putting some themes into their uni
design. Except Koxx, they already have the drug theme covered.

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http://tinyurl.com/3ckfc7

http://tinyurl.com/yomjnc

Heres my custom hub.

Unfortunatly it got a defect again, so i will send it back to my mate
to fix it.

The axle is from an old old onza hub (2003) and the rest is made by a
friend of mine.

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this is just in the planning and design phase, also, these will run
pricy because of the fact that they will be hand turned on a lathe.

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kerosian

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DustinSchaap said:

why would you kill the 5 yr olds? there's so much more fun things you
can do with them 🙄

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Smilymarco said:

http://tinyurl.com/3ckfc7

http://tinyurl.com/yomjnc

Heres my custom hub.

Unfortunatly it got a defect again, so i will send it back to my mate
to fix it.

The axle is from an old old onza hub (2003) and the rest is made by a
friend of mine.

very nice, good machine work. This hub design is similiar, cept a
little more dished. How big should the flanges be? (metric please.)
Also, how is the demand for a disc hub?

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Unicycle for Pazuzu

DustinSchaap said:

why would you kill the 5 yr olds? there's so much more fun things you
can do with them 🙄

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i can measure it tommorow maybe, im pretty short on time right now. My
friend did all the work (design and building).

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kerosian said:

I have been thinking lately, why do trials unicycles only use 36 hole,
while most good trials rims are 32 hole?

Aren't most trials rims designed for trials b*ikes and not unicycles?

Quoted message said:

Also, why do flanges have to be so fricking weak?

Broken a flange? I haven't seen many (if any) pictures of broken
flanges here.

I'd suspect a nipple or spoke would break before a flange on a large
impact, unless you're using your unicycle for something other than
trials riding.

That being said, good luck with your design... be sure to post plans
and pictures!

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Good luck with that. I hope you've done a bunch of machine work already,
because things like ISIS splines aren't easy to make, let alone the
tediousness of milling hub parts. If you're using a manual lathe for
the basic hub form, doing anything but simple straight tapers and
diameters will be very difficult.

I'm curious, are you planning to use cnc tools or manual? If you do
manual, economies of scale are going to be almost nil, and pretty much
every hub will be just as hard to make as the last. If you do cnc, it
will be initially more expensive and harder to do, but ultimately a
more uniform, cheaper product.

I just got a job at a large cnc machine shop that specializes in
high-end aerospace parts (things ranging from simple door mounts for
747s to chinook helicopter rotor hubs to langing gear parts for F-18s
and F-22s). Hopefully I'll get the time on one of the smaller machines
to make some high-end unicycle parts, but really I just want to play
around with concepts, and nothing will be made for other users.

I strongly recommend against taking orders before you have at least one
hub in a wheel and ready to ride. You'd be amazed how much stuff comes
up when toying with designs.

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The ISIS axles are already available (Bike axels), I'll just be
manufacturing the hubs, I have been machining for 3 years and still
don't think I have the prowess to attempt an ISIS axle by hand. This
will be done with both cnc and manual, as I prefer to do things by hand
(aka manual) So if I f**k anything up it'll only happen once, not every
time I go to do it. In case you're curious, the hub will be 7075
aluminum while the axels will be hardened 4130 cro moly steel.
Edit: I am not taking orders by the way, just guaging interest.
(Testing the waters, so to speak) Also, The flange thing is because of
failed side hops and pedal/crank grabs, maestro, because the typical
unicycle flange is really quite weak. (KH, Koxx, Nimbus, etc.)

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Unicycle for Pazuzu

DustinSchaap said:

why would you kill the 5 yr olds? there's so much more fun things you
can do with them 🙄

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A-ha. Sounds good. Manual is more fun, but lately I've been getting into
some more cnc, and it does open some doors. Ever tried doing something
like an impeller vane or compressor blade for a turbine in manual
machining? Someone showed me how they used to do it, and man, cnc sure
does look good.

Are ISIS BB axles wide enough for unicycles?

Check out a profile hub. They have much stronger flanges (laterally)
than the classic KH, etc.

I warn you, doing the interference fits and keyways for a unicycle hub
is pretty difficult. Profile had quite a bit of trouble with its
design, as well as a number of machinists who tried to fix things after
the fact (pins, etc).

Once again, good luck. I'll be interested to see the results.

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gerblefranklin said:

Are ISIS BB axles wide enough for unicycles?

Yes, the current hub manafactureres use off the shelf bike axles in
their hubs. KH mentioned once that the reason he couldn't make a wider
splined hub for cokers was that he couldn't get a stock axle that long,
and having one made was unviably expensive.

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Unicycles put a lot more stress on parts than trials bikes, hence more
spokes.

Why custom, asside from an interesting project?

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yunisyko said:

it's all about balls. i lose them often and then get em back.

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I'm doing this just for [censored] and giggles really, just for fun.

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DustinSchaap said:

why would you kill the 5 yr olds? there's so much more fun things you
can do with them 🙄

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kerosian said:

I'm doing this just for [censored] and giggles really, just for fun.

That is the best reason to do it... (and if it's a pain you'll never
want to do it again even if someone pays you 😄) What is the intended
usage of your hub?

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johnfoss said:

Being strictly orthodox must suck. I hope it's rewarding in the long
run.

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oddsends said:

That is the best reason to do it... (and if it's a pain you'll never
want to do it again even if someone pays you 😄) What is the intended
usage of your hub?

Trials, it'll cost me like >50 bucks to make, so why the hell not?

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Unicycle for Pazuzu

DustinSchaap said:

why would you kill the 5 yr olds? there's so much more fun things you
can do with them 🙄

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Now this is a brilliant idea, do you have any sketches done yet? Let us
know more about your project, I've been hoping to see 32hole hubs for
some time now!

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*Ah, but can you compress your tire like this?*
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I have some sketches, but I don't trust computers, all my blueprints are
on paper. I've wondered why we hadn't gone 32hole for some time now,
and it isn't because we put too much stress on trials rims! They use 1
wheel too! I'll be puting a Meta or Echo rim on it, depending on which
I get first.

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Unicycle for Pazuzu

DustinSchaap said:

why would you kill the 5 yr olds? there's so much more fun things you
can do with them 🙄

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I think it's just because we use the old system, bike trials used to be
36h as well. How much does an ISIS axle cost? So the complete package,
I might know someone who would be interested in making a hub too 😎

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*Ah, but can you compress your tire like this?*
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kerosian said:

Trials, it'll cost me like >50 bucks to make, so why the hell not?

I didn't say you shouldn't

If you are planning to do this much work I can't help but wonder why
you wouldn't also go and find Rim-blanks and make a wheel-set with a
ridiculously large number of spokes instead of making one with less
spokes than the typical trials wheel set. It sounds like your intent
is to build a beefy hub that you can beat the snot out of.

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johnfoss said:

Being strictly orthodox must suck. I hope it's rewarding in the long
run.

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kerosian said:

I have some sketches, but I don't trust computers, all my blueprints are
on paper.

😕 Huh? Backups are your friend if you are worried about
loosing data. And if you build the entire thing in software it is very
easy to check for physical conflicts. And I though you were sane,
unlike the rest of the people here.

@Dustin: Why are bike trials wheel-sets no longer 36 spoke if that's
what they used to be?

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johnfoss said:

Being strictly orthodox must suck. I hope it's rewarding in the long
run.

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