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Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Archive through October 28, 2008 » Steering Head Question? « Previous Next »

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Ochoa0042
Posted on Monday, October 20, 2008 - 10:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

just a random thought


how fast do you think an XB bike can go on a straight head-on crash, with a wall lets say, till the steering head/frame is crushed?
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Barnyard
Posted on Monday, October 20, 2008 - 11:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

now I understand the glass is half empty

My random thought
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Jos51700
Posted on Monday, October 20, 2008 - 11:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The steering head will break out of the frame without rupturing the fuel tank, if that's what you're asking.

However, every direct front-end impact on an XB that I have seen broke the tripletrees first. (One was 60+mph.).

I think it'd be an impact so severe that everything else busts off, and the frame itself makes an impact, before the frame sees a real "collapse" type of failure.
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Ochoa0042
Posted on Tuesday, October 21, 2008 - 12:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

now I understand the glass is half empty
huh?


well my thought is.... compared to other motorcycle frames, the buell frame is extremely beefy and strong as hell.
Super thick, very ridged, architecturally sound in a sense.

Compared to my last bike....or even any of todays spankin new sportbikes i should add....




....their frames are getting lighter and lighter, smaller and smaller, cost saving and weight pinching as much as possible.
I bet a same model bike of today is NoWay near as strong of a frame as it was say 7years ago. So prolly a R6 couldn't last a 10mph fender bender

So the buell frame can definately withstand a big crunch at a higher speed; but that stated above, are you sure that the tripple tree will break first? Is that an intentional engineering design?
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Froggy
Posted on Tuesday, October 21, 2008 - 12:36 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)


quote:

tripple tree will break first? Is that an intentional engineering design?




Yes, like a crumple zone : )

As you know first hand, the bikes are next to invincible, you can walk away from most wrecks with $50 in damage max. I still don't know how you put a hole in 3 primary covers.... but if they are giving you a bulk discount I will buy one off you ; )
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Ochoa0042
Posted on Tuesday, October 21, 2008 - 01:29 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Yes, like a crumple zone
well you're no engineer , and I dont think it says anything in the manual about crumple zones ..... joking btw

Anyone have any picks of anything totaled???
I was searching on ebay for parts one day, and saw a pretty bad 12R parting out
looked like the thin-side of the frame was gutted & folded like origami....
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Old_man
Posted on Tuesday, October 21, 2008 - 02:01 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

What difference does it make?
If you crash into something that hard you're going over the bars anyway - until your body hits something solid.
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Ochoa0042
Posted on Tuesday, October 21, 2008 - 02:06 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

...and hopefully that will never happen to anyone.... but has it happened to anyone here? how could you know about the crush zone unless there's proof?
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Jos51700
Posted on Tuesday, October 21, 2008 - 08:03 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

"how could you know about the crush zone unless there's proof?"

They actually addressed it during the XB technical school. That and the intentional design feature that the steering head will break off the frame without rupturing the fuel cell.

There were several incidents of Jap bike frame failures under normal riding conditions, a couple of years ago. It seems to me that the Japanese are more interested in beating eachother than performing proper R+D, so I could see an issue like that arising.

I know every manufacturer is gonna have recalls, but, like, wow. These aren't little things like a bad batch of turn signal flashers....
http://www.cpsc.gov/cpscpub/prerel/prhtml08/08548. html

http://www.motorcyclenews.com/MCN/News/newsresults /mcn/2008/June/9-15/june0908Kawasaki-ZZR1400-frame -recall/?&R=EPI-100985

http://www.1tail.com/sa/news/s/default.htm?g=%7B22 F6D1DF-72CF-4A36-B9F1-1E87EFDF1809%7D

http://www.automotix.net/autorepair/recalls/8933-r ecall/

These are scary recalls on very fast bikes (well, except for that KLX140)

I'll take a Buell frame over that any day!
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New12r
Posted on Tuesday, October 21, 2008 - 11:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Well I have hit head on into a drain under a driveway at 70mph and the forks bent, the triple broke and a number of other parts, but the frame is now on another bike and was still very usable. I will have to dig up the pics, dont think I have any on my current hard drives.
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New12r
Posted on Tuesday, October 21, 2008 - 12:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

http://www.badweatherbikers.com/cgibin/discus/show .cgi?tpc=37&post=805376#POST805376
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Ochoa0042
Posted on Tuesday, October 21, 2008 - 03:42 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

wow, thats insane, good design.... what's with the two different colored rims?

off topic
I was talking on a stunt forum about the powers cage.... but a few people said that the cage breaks the motor mounts and the 'jug'.... what do they mean by jug?
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