Titanium frame... dan heaton, zack baldwin

I do not think a titanium frame would be strong because titianium is a
bad metal for unicycles, because it bends easily.

--
mornish

aim:kiloornish
email: mornish AT gmail DOT com

Spencer said:

well, at least I'm not drinking my own blood, I only drink other
people's blood...

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mornish said:

I do not think a titanium frame would be strong because titianium is a
bad metal for unicycles, because it bends easily.

you are somewhat correct bending really dosent make it weaker just more
flexiable, But steel is still the strongest!!! Period no questions
asked, It may not be the best but is stronger! If you are breaking
frames get Steel.

--
Joe2005

nobody knows what happened to that boy after that.-Nutcracker

i know. he was kidnapped by aliens, learnt their ways, stole the
biggest ship he could, travelled back in time by mistake and crashed
the plane on the earth surface. he was the one who killed the
dinosaurs. -ivan
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Joe2005 said:

you are somewhat correct bending really dosent make it weaker just more
flexiable, But steel is still the strongest!!! Period no questions
asked, It may not be the best but is stronger! If you are breaking
frames get Steel.

Titanium is the same strength as steel, just half as stiff. And a
flexing frame wouldnt really matter on a uni.

--
Evan Byrne
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Joe2005 said:

you are somewhat correct bending really dosent make it weaker just more
flexiable, But steel is still the strongest!!! Period no questions
asked, It may not be the best but is stronger! If you are breaking
frames get Steel.

Equal weight in Titanium will be MUCH stronger than steel.

--
Borgschulze

http://borgschulze.deviantart.com/
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Evan Byrne said:

Titanium is the same strength as steel, just half as stiff. And a
flexing frame wouldnt really matter on a uni.

For trials, flex doesn't matter, no, as we don't have brake mounts.

However, I was never sure if Ti was actually the same strength as
steel...
Are you talking about 4130 chromoly to be specific, Evan?

There are other steel alloys that could be interesting to use for
unicycle frames, such as the Reynolds series. (853 and 725)

--
Sponge

MSN: [email hidden] feel free to add🙂

Quoted message said:

*Quote Joe Hodges: "Bikes are made for trials, unis aren't."* 🙄

"unstablebutable" the video, editing finishes this weekend.
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could titanium be made into a rigid aloy?

--
thejdw

dunawan said:

why are koxx one unicycles so costly???

forrestunifreak said:

They are expensive because they use only the finest soft drink cans.

Quoted message said:

Quoted message said:

don't follow Jesus, follow me!<<

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Sponge said:

For trials, flex doesn't matter, no, as we don't have brake mounts.

However, I was never sure if Ti was actually the same strength as
steel...
Are you talking about 4130 chromoly to be specific, Evan?

There are other steel alloys that could be interesting to use for
unicycle frames, such as the Reynolds series. (853 and 725)

My knowlage on these types of things is very low, Though I do belive
that all steels have the same strength? (or maybe the same
stiffness..........Help bevan!!!)

What kind of steel are koxx frames made of?

--
Evan Byrne
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Evan Byrne said:

My knowlage on these types of things is very low, Though I do belive
that all steels have the same strength? (or maybe the same
stiffness..........Help bevan!!!)

Goodness no, else why would you pay for expensive steels when you could
use mild?

For the record:

Titanium
strength: 240-370 MPa
stiffness: 120 GPa
density: 4.5 kg/dm^3

Mild Steel
strength: 400-500 MPa
stiffness: 210 GPS
density: 7.85 kg/dm^3

Sorry I don't have data for CrMo within arm's reach.

--
kington99

Dave

- what a thoroughly post-modern subversion of the cycling genre -
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i believe that isaac le masters has the titanium frame that you speak
of, and he is living here in australia. but he might have sold it to
someone else recently.

--
iridemymuni

maker of the happy birthday threads

ive got:

John Childs, Klaas Bill, Kris Holm, Samia, Harper, Bryan Stevens,
Wobbling bear, Mike Swarbrick, Cathwoood, Scott Wallis, Mikefule,
Raphael (jjuggle), James Potter, ITEMNO530, DogBowl, Yoopers,
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iridemymuni said:

i believe that isaac le masters has the titanium frame that you speak
of, and he is living here in australia. but he might have sold it to
someone else recently.

thank you very much

can you give me isaac's email so i can email him about it? thank you

--
Dosestrallas12
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Dosestrallas12 said:

thank you very much

can you give me isaac's email so i can email him about it? thank you

i sent you a PM with his email.

--
iridemymuni

maker of the happy birthday threads

ive got:

John Childs, Klaas Bill, Kris Holm, Samia, Harper, Bryan Stevens,
Wobbling bear, Mike Swarbrick, Cathwoood, Scott Wallis, Mikefule,
Raphael (jjuggle), James Potter, ITEMNO530, DogBowl, Yoopers,
Habbywall, Terry and Jagur.
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kington99 said:

Sorry I don't have data for CrMo within arm's reach.

Within reach? you just ruined my self fed illusion; that Kington99 was
all knowing. i thought that stuff just came out of your head, now i
know! it was researched..

crumble

--
tobbogonist

Technology Savvy. David [censored].
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tobbogonist said:

Within reach? you just ruined my self fed illusion; that Kington99 was
all knowing. i thought that stuff just came out of your head, now i
know! it was researched..

crumble

Oh goodness no, i have a little book (well it's 180 A4 pages) called
Howatson Lund and Todd which is the stock data book for taking in to
exams. Having said that i have the standard data for steel (460 MPa and
200 GPa) in my head constantly.

--
kington99

Dave

- what a thoroughly post-modern subversion of the cycling genre -
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you are still mighty clever in my eye. 'little' book or no 'little' book
🙂

--
tobbogonist

Technology Savvy. David [censored].
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Every good engineer should refer to databooks for materials data and
formulae, amongst other things. Stops us from inadvertantly killing
people.

Loose.

--
Loosemoose

Vice President - Southampton University Circus Society

"Come on you target for far away laughter,
come on you stranger, you legend, you martyr, and shine..." - Pink
Floyd
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Loosemoose, words cannot describe how worn out that phrase got in my
engineering class last semester.

That titanium frame cracked twice during Zack and Dan's use of it. It's
not particularly strong. Go buy a freakin' steel KH frame and quit
whining.

Do a search of my previous posts if you care about learning something
about the difference between aluminum, steel, and titanium. Even
better, look at an engineering text or a frame design website (not a
manufacturer site, since they are trying to sell you stuff). Either
way, let me give you a hint on how not to learn about engineering
unicycle frames: If it is a 2 line post by some 13-year old who's never
read a textbook or worked the metal, chances it's worthless. Or if the
post includes "Period no questions asked", that is a tip off that the
poster doesn't know what he's talking about.

The differences between the different alloys of steel are minimal.
We're talking a variance of about 3-8% in strength. In other words, you
won't notice the difference between stainless steel, 4130, and plain
old mild steel. More important is the quality of the metal and the
quality of the workmanship constructing the frame.

--
gerblefranklin

http://gallery.unicyclist.com/Trials-Muni

Nick's main man.

"I love freedom dearly, ideally, in theory, but in reality we're not
there yet--Not nearly."--Cold Duck Complex
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I'd have to disagree there gerble.
the strongest steel I know of (for use in bicycles) is either the
reynolds 953, or the true temper S3 tubesets. They have claimed
strengths of 1750-2050 MPa. This would make the difference much much
higher than 3-8 %. closer to around 600%

However, i do agree that the builder makes a huge difference.

I really want to see someone get a frame made of 953. I think it could
be brought down to 300-400 grams.

Oh, and as for the frame, It was custom built for Dan, and has cracked
a few times. This wasn't due to the material IMO, but instead due to
poor upkeep, and a lack of keeping the lolipop bearing holders tight.
Had it been built with main-cap bearing holders, i doubt it would have
cracked, but it is very expensive to machine Ti, so they just bolted
the steel lolipops on there.

-Ryan

--
m_extreme_uni

"Yeah, Gravity is bad" Leo Kottke
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m_extreme_uni said:

I'd have to disagree there gerble.
the strongest steel I know of (for use in bicycles) is either the
reynolds 953, or the true temper S3 tubesets. They have claimed
strengths of 1750-2050 MPa. This would make the difference much much
higher than 3-8 %. closer to around 600%

However, i do agree that the builder makes a huge difference.

I really want to see someone get a frame made of 953. I think it could
be brought down to 300-400 grams.

Oh, and as for the frame, It was custom built for Dan, and has cracked
a few times. This wasn't due to the material IMO, but instead due to
poor upkeep, and a lack of keeping the lolipop bearing holders tight.
Had it been built with main-cap bearing holders, i doubt it would have
cracked, but it is very expensive to machine Ti, so they just bolted
the steel lolipops on there.

-Ryan

Interesting, but would you happen to know much about Reynolds 725 Ryan?
It's because there's a custom biketrials frame maker based in Britain
who works with 725, and perhaps, if they're interested they could
produce some uni frames with that material based around a simple yet
strong design (e.g. KH07).

Reynolds 853 is expensive enough in the BMX world, I wonder how much
953 could cost... Still cheaper than titanium alloys I assume?

--
Sponge

MSN: [email hidden] feel free to add🙂

Quoted message said:

*Quote Joe Hodges: "Bikes are made for trials, unis aren't."* 🙄

"unstablebutable" the video, editing finishes this weekend.
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I agree that reynolds 953 should be the best material. I think that they
build some in England but they stop as I know. A friend of mine has one
that seems to be made from reynolds steel. Its awesome light and very
strong. It is a freestyle frame but has no probs while trialing with
it.
The only question is how to get a frame made of reynolds steel 🙂

by the way, miyata sell a Ti frame.

Can you post the adress of the custom bike frame maker ?

--
olarf

visit 'unicycle.tv' (http://www.unicycle.tv)
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