Luciano bailey

I say ride at your own risk although right now I've been tooling around a trek aluminum cross bike with a pretty good dent in the seat tube it was a accident bike that was scraped after some minor tweeking to the rear stays the bike rolls true and I haven't thought about it since. That was about 1000 miles ago. As far as catastrophic failures I still think complete fork failure is the worst I've seen . Just a couple cents worth. Oh and feel free to let me know about the big dent when you see it, that is if you can see it when I pass you or more likely when I'm wheel suckin'

> From: ferguskinnell@mac.com
> To: crobinson09@jesuitmail.org
> Date: Fri, 6 Mar 2009 17:06:46 -0800
> CC: obra@list.obra.org
> Subject: Re: [OBRA Chat] things to do with an old frame?
>
> What size is it? I'll buy it from you for $25 if it is a 58cm.
>
> I need a bar bike.
>
>
>
> On Mar 5, 2009, at 7:27 PM, chris robinson wrote:
>
> > I have an aluminum road bike frame that a reputable shop has deemed
> > unsafe to ride because of a dent in the top tube, so I can't sell it
> > to anyone and I don't just want to throw it out...any ideas?
> > _______________________________________________
> > OBRA mailing list
> > obra@list.obra.org
> > http://list.obra.org/mailman/listinfo/obra
> > Unsubscribe: obra-unsubscribe@list.obra.org
>
> _______________________________________________
> OBRA mailing list
> obra@list.obra.org
> http://list.obra.org/mailman/listinfo/obra
> Unsubscribe: obra-unsubscribe@list.obra.org

_________________________________________________________________
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Fergus

What size is it? I'll buy it from you for $25 if it is a 58cm.

I need a bar bike.

On Mar 5, 2009, at 7:27 PM, chris robinson wrote:

> I have an aluminum road bike frame that a reputable shop has deemed
> unsafe to ride because of a dent in the top tube, so I can't sell it
> to anyone and I don't just want to throw it out...any ideas?
> _______________________________________________
> OBRA mailing list
> obra@list.obra.org
> http://list.obra.org/mailman/listinfo/obra
> Unsubscribe: obra-unsubscribe@list.obra.org

Don Whitehead

Here is some classic and fun stuff on frame breakage from Jobst Brandt, who
is never short on opinions, although most of them are educated:

http://yarchive.net/bike/frame_break.html

2009/3/6 john

> in a crash ? Or maybe some other mitigating circumstance...?? Yes if
> they both broke of course it would catastrophic.
> But both tubes breaking by just riding along ? I highly doubt. Well
> with carbon fiber who knows, it being a material that does like to fail with
> no ductility exhibited...
>
> but with steel or aluminum... No way. I would only believe if i heard
> some hard specifics and all circumstances surrounding the failure....
>
> On Fri, Mar 6, 2009 at 3:59 PM, Long, Steve wrote:
>
>> OMG, I hate to butt in here but I've seen bikes break in half (top tupe
>> and down tube) completely seperating the front from the back of the bike. I
>> just have a hard time seeing how that would not be catastophic. And yes,
>> when this happens, it can happen in the blink of an eye. I've seen it happen
>> in several material types as well, including aluminum, titanium and of
>> course carbon.
>>
>> ------------------------------
>> *From:* obra-bounces@list.obra.org [mailto:obra-bounces@list.obra.org] *On
>> Behalf Of *john
>> *Sent:* Friday, March 06, 2009 3:43 PM
>> *To:* obra@list.obra.org
>> *Subject:* Re: [OBRA Chat] things to do with an old frame?
>>
>> That's what i would do, and then just ride it. Unless that dent is like
>> more then say 3/8" to 1/2" deep, i have a hard time believing that it is
>> "unsafe" to ride. A top tube, experiences bending and axial compression
>> loads and some torsion. If it does "fail" it won't be catastrophic, rather
>> you'll notice increased localized buckling at the dent, or maybe a crack
>> forming (not as likely since the compression will help keep the crack from
>> forming or propagating..).
>> The good news is the dent is right there within eyesight, so easy to keep
>> an eye on. When you notice something bad happening, then make it yard
>> art. I am guessing you will have you own house, yard, and mortgage half
>> paid by the time that rolls around, and of course at least another half
>> dozen frames, bikes laying around.
>> Even if it does break clean through while riding it, the down tube will
>> hold together until you stop.
>>
>> You should post a picture so we all can make "reputable" comments about
>> it. :) great end of the week fun.
>>
>>
>>
>> 2009/3/6
>>
>>> Ask a disreputable shop if it is safe to ride it.
>>>
>>>
>>>
>>> ----- Original Message -----
>>> From: "chris robinson"
>>> To: obra@list.obra.org
>>> Sent: Thursday, March 5, 2009 7:27:48 PM GMT -08:00 US/Canada Pacific
>>> Subject: [OBRA Chat] things to do with an old frame?
>>>
>>> I have an aluminum road bike frame that a reputable shop has deemed
>>> unsafe to ride because of a dent in the top tube, so I can't sell it to
>>> anyone and I don't just want to throw it out...any ideas?
>>> _______________________________________________
>>> OBRA mailing list
>>> obra@list.obra.org
>>> http://list.obra.org/mailman/listinfo/obra
>>> Unsubscribe: obra-unsubscribe@list.obra.org
>>>
>>> _______________________________________________
>>> OBRA mailing list
>>> obra@list.obra.org
>>> http://list.obra.org/mailman/listinfo/obra
>>> Unsubscribe: obra-unsubscribe@list.obra.org
>>>
>>>
>>
>>
>> --
>> jms, pe pdx, or
>> http://bikeeng.blogspot.com/
>>
>>
>
>
> --
> jms, pe pdx, or
> http://bikeeng.blogspot.com/
>
>
> _______________________________________________
> OBRA mailing list
> obra@list.obra.org
> http://list.obra.org/mailman/listinfo/obra
> Unsubscribe: obra-unsubscribe@list.obra.org
>
>

john

in a crash ? Or maybe some other mitigating circumstance...?? Yes if they
both broke of course it would catastrophic.
But both tubes breaking by just riding along ? I highly doubt. Well with
carbon fiber who knows, it being a material that does like to fail with no
ductility exhibited...

but with steel or aluminum... No way. I would only believe if i heard
some hard specifics and all circumstances surrounding the failure....

On Fri, Mar 6, 2009 at 3:59 PM, Long, Steve wrote:

> OMG, I hate to butt in here but I've seen bikes break in half (top tupe
> and down tube) completely seperating the front from the back of the bike. I
> just have a hard time seeing how that would not be catastophic. And yes,
> when this happens, it can happen in the blink of an eye. I've seen it happen
> in several material types as well, including aluminum, titanium and of
> course carbon.
>
> ------------------------------
> *From:* obra-bounces@list.obra.org [mailto:obra-bounces@list.obra.org] *On
> Behalf Of *john
> *Sent:* Friday, March 06, 2009 3:43 PM
> *To:* obra@list.obra.org
> *Subject:* Re: [OBRA Chat] things to do with an old frame?
>
> That's what i would do, and then just ride it. Unless that dent is like
> more then say 3/8" to 1/2" deep, i have a hard time believing that it is
> "unsafe" to ride. A top tube, experiences bending and axial compression
> loads and some torsion. If it does "fail" it won't be catastrophic, rather
> you'll notice increased localized buckling at the dent, or maybe a crack
> forming (not as likely since the compression will help keep the crack from
> forming or propagating..).
> The good news is the dent is right there within eyesight, so easy to keep
> an eye on. When you notice something bad happening, then make it yard
> art. I am guessing you will have you own house, yard, and mortgage half
> paid by the time that rolls around, and of course at least another half
> dozen frames, bikes laying around.
> Even if it does break clean through while riding it, the down tube will
> hold together until you stop.
>
> You should post a picture so we all can make "reputable" comments about it.
> :) great end of the week fun.
>
>
>
> 2009/3/6
>
>> Ask a disreputable shop if it is safe to ride it.
>>
>>
>>
>> ----- Original Message -----
>> From: "chris robinson"
>> To: obra@list.obra.org
>> Sent: Thursday, March 5, 2009 7:27:48 PM GMT -08:00 US/Canada Pacific
>> Subject: [OBRA Chat] things to do with an old frame?
>>
>> I have an aluminum road bike frame that a reputable shop has deemed
>> unsafe to ride because of a dent in the top tube, so I can't sell it to
>> anyone and I don't just want to throw it out...any ideas?
>> _______________________________________________
>> OBRA mailing list
>> obra@list.obra.org
>> http://list.obra.org/mailman/listinfo/obra
>> Unsubscribe: obra-unsubscribe@list.obra.org
>>
>> _______________________________________________
>> OBRA mailing list
>> obra@list.obra.org
>> http://list.obra.org/mailman/listinfo/obra
>> Unsubscribe: obra-unsubscribe@list.obra.org
>>
>>
>
>
> --
> jms, pe pdx, or
> http://bikeeng.blogspot.com/
>
>

--
jms, pe pdx, or
http://bikeeng.blogspot.com/

Long, Steve

OMG, I hate to butt in here but I've seen bikes break in half (top tupe
and down tube) completely seperating the front from the back of the
bike. I just have a hard time seeing how that would not be catastophic.
And yes, when this happens, it can happen in the blink of an eye. I've
seen it happen in several material types as well, including aluminum,
titanium and of course carbon.

________________________________

From: obra-bounces@list.obra.org [mailto:obra-bounces@list.obra.org] On
Behalf Of john
Sent: Friday, March 06, 2009 3:43 PM
To: obra@list.obra.org
Subject: Re: [OBRA Chat] things to do with an old frame?

That's what i would do, and then just ride it. Unless that dent is like
more then say 3/8" to 1/2" deep, i have a hard time believing that it
is "unsafe" to ride. A top tube, experiences bending and axial
compression loads and some torsion. If it does "fail" it won't be
catastrophic, rather you'll notice increased localized buckling at the
dent, or maybe a crack forming (not as likely since the compression will
help keep the crack from forming or propagating..).

The good news is the dent is right there within eyesight, so easy to
keep an eye on. When you notice something bad happening, then make it
yard art. I am guessing you will have you own house, yard, and mortgage
half paid by the time that rolls around, and of course at least another
half dozen frames, bikes laying around.

Even if it does break clean through while riding it, the down tube will
hold together until you stop.

You should post a picture so we all can make "reputable" comments about
it. :) great end of the week fun.

2009/3/6

Ask a disreputable shop if it is safe to ride it.

----- Original Message -----
From: "chris robinson"
To: obra@list.obra.org

Sent: Thursday, March 5, 2009 7:27:48 PM GMT -08:00 US/Canada
Pacific
Subject: [OBRA Chat] things to do with an old frame?


I have an aluminum road bike frame that a reputable shop has
deemed unsafe to ride because of a dent in the top tube, so I can't sell
it to anyone and I don't just want to throw it out...any ideas?
_______________________________________________
OBRA mailing list
obra@list.obra.org
http://list.obra.org/mailman/listinfo/obra
Unsubscribe: obra-unsubscribe@list.obra.org

_______________________________________________
OBRA mailing list
obra@list.obra.org
http://list.obra.org/mailman/listinfo/obra
Unsubscribe: obra-unsubscribe@list.obra.org

--
jms, pe pdx, or
http://bikeeng.blogspot.com/

Don Whitehead

A three tube main triangle is over-rated. Slingshot long ago demonstrated
that the downtube is just cosmetic :)

http://www.slingshotbikes.com/showroom/mountain

2009/3/6 john

> That's what i would do, and then just ride it. Unless that dent is like
> more then say 3/8" to 1/2" deep, i have a hard time believing that it is
> "unsafe" to ride. A top tube, experiences bending and axial compression
> loads and some torsion. If it does "fail" it won't be catastrophic, rather
> you'll notice increased localized buckling at the dent, or maybe a crack
> forming (not as likely since the compression will help keep the crack from
> forming or propagating..).
> The good news is the dent is right there within eyesight, so easy to keep
> an eye on. When you notice something bad happening, then make it yard
> art. I am guessing you will have you own house, yard, and mortgage half
> paid by the time that rolls around, and of course at least another half
> dozen frames, bikes laying around.
> Even if it does break clean through while riding it, the down tube will
> hold together until you stop.
>
> You should post a picture so we all can make "reputable" comments about it.
> :) great end of the week fun.
>
>
>
> 2009/3/6
>
> Ask a disreputable shop if it is safe to ride it.
>>
>>
>>
>> ----- Original Message -----
>> From: "chris robinson"
>> To: obra@list.obra.org
>> Sent: Thursday, March 5, 2009 7:27:48 PM GMT -08:00 US/Canada Pacific
>> Subject: [OBRA Chat] things to do with an old frame?
>>
>> I have an aluminum road bike frame that a reputable shop has deemed unsafe
>> to ride because of a dent in the top tube, so I can't sell it to anyone and
>> I don't just want to throw it out...any ideas?
>> _______________________________________________
>> OBRA mailing list
>> obra@list.obra.org
>> http://list.obra.org/mailman/listinfo/obra
>> Unsubscribe: obra-unsubscribe@list.obra.org
>>
>> _______________________________________________
>> OBRA mailing list
>> obra@list.obra.org
>> http://list.obra.org/mailman/listinfo/obra
>> Unsubscribe: obra-unsubscribe@list.obra.org
>>
>>
>
>
> --
> jms, pe pdx, or
> http://bikeeng.blogspot.com/
>
>
> _______________________________________________
> OBRA mailing list
> obra@list.obra.org
> http://list.obra.org/mailman/listinfo/obra
> Unsubscribe: obra-unsubscribe@list.obra.org
>
>

john

That's what i would do, and then just ride it. Unless that dent is like
more then say 3/8" to 1/2" deep, i have a hard time believing that it is
"unsafe" to ride. A top tube, experiences bending and axial compression
loads and some torsion. If it does "fail" it won't be catastrophic, rather
you'll notice increased localized buckling at the dent, or maybe a crack
forming (not as likely since the compression will help keep the crack from
forming or propagating..).
The good news is the dent is right there within eyesight, so easy to keep an
eye on. When you notice something bad happening, then make it yard art. I
am guessing you will have you own house, yard, and mortgage half paid by the
time that rolls around, and of course at least another half dozen frames,
bikes laying around.
Even if it does break clean through while riding it, the down tube will hold
together until you stop.

You should post a picture so we all can make "reputable" comments about it.
:) great end of the week fun.

2009/3/6

> Ask a disreputable shop if it is safe to ride it.
>
>
>
> ----- Original Message -----
> From: "chris robinson"
> To: obra@list.obra.org
> Sent: Thursday, March 5, 2009 7:27:48 PM GMT -08:00 US/Canada Pacific
> Subject: [OBRA Chat] things to do with an old frame?
>
> I have an aluminum road bike frame that a reputable shop has deemed unsafe
> to ride because of a dent in the top tube, so I can't sell it to anyone and
> I don't just want to throw it out...any ideas?
> _______________________________________________
> OBRA mailing list
> obra@list.obra.org
> http://list.obra.org/mailman/listinfo/obra
> Unsubscribe: obra-unsubscribe@list.obra.org
>
> _______________________________________________
> OBRA mailing list
> obra@list.obra.org
> http://list.obra.org/mailman/listinfo/obra
> Unsubscribe: obra-unsubscribe@list.obra.org
>
>

--
jms, pe pdx, or
http://bikeeng.blogspot.com/

gschreckchat@comcast.net

Ask a disreputable shop if it is safe to ride it.

----- Original Message -----
From: "chris robinson"
To: obra@list.obra.org
Sent: Thursday, March 5, 2009 7:27:48 PM GMT -08:00 US/Canada Pacific
Subject: [OBRA Chat] things to do with an old frame?

I have an aluminum road bike frame that a reputable shop has deemed unsafe to ride because of a dent in the top tube, so I can't sell it to anyone and I don't just want to throw it out...any ideas?
_______________________________________________
OBRA mailing list
obra@list.obra.org
http://list.obra.org/mailman/listinfo/obra
Unsubscribe: obra-unsubscribe@list.obra.org

Ron and Dorothy Strasser

Get creative... Yard Art!
----- Original Message -----
From: "chris robinson"
To:
Sent: Thursday, March 05, 2009 7:27 PM
Subject: [OBRA Chat] things to do with an old frame?

>I have an aluminum road bike frame that a reputable shop has deemed unsafe
>to ride because of a dent in the top tube, so I can't sell it to anyone and
>I don't just want to throw it out...any ideas?
> _______________________________________________
> OBRA mailing list
> obra@list.obra.org
> http://list.obra.org/mailman/listinfo/obra
> Unsubscribe: obra-unsubscribe@list.obra.org
>

Brady Brady

On a more serious note, perhaps you're willing to take the risk of just using it as an indoor training bike? You could (or could have someone) fix a collar onto the dented portion... it would look between bad and awful, but you'll be looking at the T.V. anyway. A dedicated, rustproof indoor trainer that fits you perfectly is a good thing...

-----Original Message-----
From: Brady Brady
Sent: Thursday, March 05, 2009 8:33 PM
To: 'chris robinson'; obra@list.obra.org
Subject: RE: [OBRA Chat] things to do with an old frame?

Hacksaw it into pieces --> wind chimes?

Brady

-----Original Message-----
From: obra-bounces@list.obra.org [mailto:obra-bounces@list.obra.org] On Behalf Of chris robinson
Sent: Thursday, March 05, 2009 7:28 PM
To: obra@list.obra.org
Subject: [OBRA Chat] things to do with an old frame?

I have an aluminum road bike frame that a reputable shop has deemed unsafe to ride because of a dent in the top tube, so I can't sell it to anyone and I don't just want to throw it out...any ideas?
_______________________________________________
OBRA mailing list
obra@list.obra.org
http://list.obra.org/mailman/listinfo/obra
Unsubscribe: obra-unsubscribe@list.obra.org

Brady Brady

Hacksaw it into pieces --> wind chimes?

Brady

-----Original Message-----
From: obra-bounces@list.obra.org [mailto:obra-bounces@list.obra.org] On Behalf Of chris robinson
Sent: Thursday, March 05, 2009 7:28 PM
To: obra@list.obra.org
Subject: [OBRA Chat] things to do with an old frame?

I have an aluminum road bike frame that a reputable shop has deemed unsafe to ride because of a dent in the top tube, so I can't sell it to anyone and I don't just want to throw it out...any ideas?
_______________________________________________
OBRA mailing list
obra@list.obra.org
http://list.obra.org/mailman/listinfo/obra
Unsubscribe: obra-unsubscribe@list.obra.org

chris robinson

I have an aluminum road bike frame that a reputable shop has deemed unsafe to ride because of a dent in the top tube, so I can't sell it to anyone and I don't just want to throw it out...any ideas?