SHOW US YOUR KLUNKERZ

[hewey]

I just picked up a Kona Humuhumu-kunukunu-apu'a

 

[LukeTheJoker]

I just picked up a Kona Humuhumu-kunukunu-apu'a

I don't know how to pronounce it, but I like it!

 

[RustyGold]

Cold rolled steel bar won't bend. Order online or from your local metal shop. Hot rolled like from the hardware store will bend.

There isn't any real difference in strength between hot-rolled and cold-rolled steel, if the same alloy/grade. The difference in strength is that you are getting mild steel from the hardware store, and something stronger from the metal shop. The best reason to get cold-rolled for a seatpost is that it is more dimensionally accurate than hot-rolled.

Jason

 

[RustyGold]

I don't know how to pronounce it, but I like it!

...just like it is spelled...but, the kunu should be a nuku...humuhumunukunukuapua'a. I keep looking, but they tend to hold their value very well.

Jason

 

[us56456712]

There isn't any real difference in strength between hot-rolled and cold-rolled steel, if the same alloy/grade. The difference in strength is that you are getting mild steel from the hardware store, and something stronger from the metal shop. The best reason to get cold-rolled for a seatpost is that it is more dimensionally accurate than hot-rolled.

Jason

Cold rolled is stronger stronger

 

[RustyGold]

Schwinn Heavy Duti. Hayes mechanical disc on unknown 1 ⅛" fork. Unknown, but seamless, bars and MacNeil stem. Profile chainring, unknown cranks, Conti 2.40" tires, Araya rims with Shimano hubs front and rear. The coaster brake rear is trashed after 22miles of mostly downhill mountain biking...but still rolls pretty free.

Cold rolled is stronger stronger

You are correct...I parrotted a rule of thumb that wasn't entirely accurate. Although tensile strength ranges from marginally to significantly better with cold rolled...yield strength is always significantly higher with cold rolled, which would be more important for a seat post.

With very few exceptions... a chromoly grade is is going to be the better choice than hot/cold/as drawn mild steel.

Jason

 

[us56456712]

Schwinn Heavy Duti. Hayes mechanical disc on unknown 1 ⅛" fork. Unknown, but seamless, bars and MacNeil stem. Profile chainring, unknown cranks, Conti 2.40" tires, Araya rims with Shimano hubs front and rear. The coaster brake rear is trashed after 22miles of mostly downhill mountain biking...but still rolls pretty free.

View attachment 83946



You are correct...I parrotted a rule of thumb that wasn't entirely accurate. Although tensile strength ranges from marginally to significantly better with cold rolled...yield strength is always significantly higher with cold rolled, which would be more important for a seat post.

With very few exceptions... a chromoly grade is is going to be the better choice than hot/cold/as drawn mild steel.

Jason

I'm light, 155 pounds but I always bend hot rolled 5/8 bars. Cold rolled has never failed me. Also, Allen Bonds site "clunkers" has a tip page for building klunkers and he recommends a certain grade of aluminium rod. I can't recall what it is but I use that also without bending. I have only used it in 5/8 so it should be good on larger diameter for bigger riders.

 

[garagegoon]

 

[Speed King]

A trio of neo klunks-

 

[RustyGold]

Is that Transition bracketed by a Hank and a Fisher? I'm in awe

Jason

 

[Robertk]

Nice stable of Neo Klunks!

 

[Speed King]

Is that Transition bracketed by a Hank and a Fisher? I'm in awe

Jason

Yes! Lot of mods on the Hank- but I have all stock parts boxed up. It was nos when I got it about a year ago. I like riding it best of all of them. I mean of the non vintage bikes. I have 2 Transitions actually.

 

[Speed King]

Hank

 

[RustyGold]

I think you are only a Sawyer away from perfection

Jason

 

[malcolmlauder]

My firestone.

Sent from my SM-J510FN using Tapatalk

 

[Chuy]

Hank

View attachment 84453

What’s you rig geared at? Is that a oval ring?


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[Speed King]

What’s you rig geared at? Is that a oval ring?


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Not an oval. I have a 34, 36, and a 40 for this bike. I change out as mood/riding condition dictates. I live in Colorado so I have many different choices of great riding right out my back door.

 

[ronark]

A trio of neo klunks-View attachment 84331 View attachment 84332

Speed King those are SWEET... Please provide a link on them so I can do some research. I cant find anything under "Transition Neo Hank Frames"

 

[Dizzle Problems]

Speed King those are SWEET... Please provide a link on them so I can do some research. I cant find anything under "Transition Neo Hank Frames"

Search ‘transition klunker’ and ‘asylum hank’

 

[Speed King]