![]() |
![]() |
#16 | |
Sam Haber
|
**My speculation bellow, feel free to correct me**
This picture shows how all of his weight is on that crank and frame leg and he is trying to hold all that weight up by holding/pulling on the seat. It created enough pressure to slip out of his hand. Thats a lot of pressure on that one weld. Seeing as this a a pretty common flat move, you have to assume that the weld is stressed quite a bit. More so then with big drops which are usually landed on the pedals and cranks with very little weight on the frame. When there is its on the front of the seat (most times) so the seat and seatpost take alot of the stress before the frame. With flatland a lot of the stress is sideways, so there is nothing to take the edge off that stress. Its all goes to that weld at the crown. Aluminum is pretty weak where its been welded. ... what are ya gonna do? Quote:
Last edited by agentQ; 2008-03-30 at 04:38 AM. |
|
![]() |
![]() |
![]() |
#17 |
ERIC P
Join Date: Jan 2007
Location: La Ronge, Saskatchewan, Canada
Age: 32
Posts: 6,375
|
Aluminum is plenty strong when it is welded properly BUT is does not take repeated stresses very well. That frame has probably been stressed many many times and the shock from the pedal hitting the ground just finished it off.
This is why I would not buy a used aluminum frame. If you go frame by frame you can see it breaks when the pedal strikes the ground. |
![]() |
![]() |
![]() |
#18 |
Alex Grierson
|
And people keep buying alum KH frames for $200 when steel nimbus are $50?
|
![]() |
![]() |
![]() |
#19 | |
Sam Haber
|
I dont think it had anything to do with the pedal hitting the ground, other than thats when the rest of the unicycle stopped and the top broken off seat tube kept going.
Yes aluminum can be strong, when welded properly(which is considered an art). But even good aluminum welders are often times far from that artist status. Even a true artist can not keep aluminum from failing. There is a reason why Thomson posts are so strong.... anyone? ...No welds. Quote:
Last edited by agentQ; 2008-03-30 at 05:08 AM. |
|
![]() |
![]() |
![]() |
#20 | |
King of Carnies
|
Quote:
Flatland, from the foot, body, and unicycle positions, puts tons of stress onto the frame. Way more than trials, and a bit more than street does. The KH frame isnt reinforced at that area either. And thats already been covered. I think the best frames would be the Qu-Ax steel or alum frame, the Triton frame, then the Nimbus II frame. |
|
![]() |
![]() |
![]() |
#21 |
Team Spencer second in command
|
Yeah ive snapped mine before too, but just once. I hope you didnt yet buy a new one, because you can get a free replacement. I think a kh frame beats the nimbus any day, though weaker, because it has a warranty.
__________________
http://www.youtube.com/profile?user=peleproductions Unicycle for rational thought, open mindedness, and uncertainty. And Spencer. Inventor of the Slapflip. |
![]() |
![]() |
![]() |
#22 |
Unicyclist
|
yeah that must have had a pretty serious crack in it to break at that point. Looks like you qualify for the triton sponge.
__________________
Dave - what a thoroughly post-modern subversion of the cycling genre - |
![]() |
![]() |
![]() |
#23 | |
O>OO
Join Date: Aug 2004
Location: Poughkeepsie, NY
Age: 63
Posts: 1,767
|
Quote:
__________________
Regards, Ken Unicycles are flying machines! 24", 28", 32", and 36" KH frame based mutts. 26" inexpensive travel. Last edited by Chrashing; 2008-03-30 at 01:33 PM. |
|
![]() |
![]() |
![]() |
#24 | |
Registered User
|
Quote:
I checked myself, frame by frame in wmp classic and I clrearly see that's has been cracked before the pedal touches the ground. |
|
![]() |
![]() |
![]() |
#25 |
Europe Winter RoadTrip coming soon!
|
Wow! That sucks... 2 broken KH frames!
![]() Good Luck with your next frame... ![]()
__________________
Brazilian Unicycling Team Gobble, Gobble!
|
![]() |
![]() |
![]() |
#26 |
KH unicycles
Join Date: Sep 2006
Location: Fort Walton Beach, Florida
Age: 25
Posts: 966
|
Jon man im sorry this happened. i admire how you contained yourself when it did break though.
![]()
__________________
unicycle for Christ http://www.krisholm.com/khu/ http://www.youtube.com/user/forack23 |
![]() |
![]() |
![]() |
#27 |
Vendetta Against Freestylers
|
Dang, i just got onto a comp that had the ability to watch that vid, and damn.... That sucks... Still once again crazy.
__________________
"I'll learn the landing once i do the takeoff" - me Sixsixone - Great gear for all riding!-My Videos Sprite Off Winner 08~ |
![]() |
![]() |
![]() |
#28 | |
flatlander
|
Quote:
both times when ive broken the frame its been because of sideways stress(the last time it was from 270) so both times ive been pulling on it from the side. Im almost 100 percent there was no crack in it before it snapped jon A Last edited by Jon Atwell; 2008-03-30 at 05:33 PM. |
|
![]() |
![]() |
![]() |
#29 |
Team Spencer second in command
|
ah i just watched the vid. I love the puzzled look on your face. very comic. (no offense or anything)
Its strange how it seemed to snap so gracefully. that does suck, snapping it on the 2nd day of spring break. I know your pain, I snapped my kh frame on the 3rd day I was in Israel... (out of around 10 days).
__________________
http://www.youtube.com/profile?user=peleproductions Unicycle for rational thought, open mindedness, and uncertainty. And Spencer. Inventor of the Slapflip. |
![]() |
![]() |
![]() |
#30 |
Recreational unicyclist
|
What video?
__________________
1-wheeled-grape: ''I could never do yoga... I'm too fat I was forced to do it in primary school and the results were by no means fun'' ... ''If my belly doesn't scare me though no nakedness will'' |
![]() |
![]() |
![]() |
Tags |
broken, frameagain |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | Search this Thread |
Display Modes | Rate This Thread |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Broken KH Handle | Matt_V | General Unicycling Discussions | 8 | 2008-04-08 05:43 AM |
broken kh frame :( :( :( | bobousse | General Unicycling Discussions | 28 | 2008-01-24 10:13 AM |
My KH 20" is broken. | Øyvind | Unicycle Product Reviews | 77 | 2008-01-09 05:39 PM |
Broken KH frame | Jon Atwell | General Unicycling Discussions | 33 | 2007-08-19 04:51 PM |
Broken Frame Cap? | skate4flip | General Unicycling Discussions | 16 | 2005-07-22 05:46 PM |