Sun Rim 700c Just failed???

[[email protected]]

I have a 700c road wheel sun Venus. Between going into the shed an
coming out I got a slight buckle in the sidewall of the rim; LBS tells
me it is right on the "join" on the side of the rim. The only action
was pump up the tire. To approx 120psi. I am fussy; No potholes, bumps
etc. Very confusing. Can 120 buckle a rim???

 

[Nate Knutson]

On Aug 30, 3:27 pm, [email protected] wrote:
> I have a 700c road wheel sun Venus. Between going into the shed an
> coming out I got a slight buckle in the sidewall of the rim; LBS tells
> me it is right on the "join" on the side of the rim. The only action
> was pump up the tire. To approx 120psi. I am fussy; No potholes, bumps
> etc. Very confusing. Can 120 buckle a rim???

what exactly do you mean by buckle? did the rim go out of true, or is
there some kind of distortion in the material? are you really sure it
happened so quickly?

venuses are kind of weird rims. they're lighter than al rims as deep
as them tend to be. i believe the extrusion thickness of the walls of
their "V" is thinner than normal.

 

[[email protected]]

It definately happend quick. It is an actual distortion. I wish it was
just out of true. They say it is not repairable.

On Thu, 30 Aug 2007 15:36:41 -0700, Nate Knutson <[email protected]>
wrote:

>On Aug 30, 3:27 pm, [email protected] wrote:
>> I have a 700c road wheel sun Venus. Between going into the shed an
>> coming out I got a slight buckle in the sidewall of the rim; LBS tells
>> me it is right on the "join" on the side of the rim. The only action
>> was pump up the tire. To approx 120psi. I am fussy; No potholes, bumps
>> etc. Very confusing. Can 120 buckle a rim???
>
>what exactly do you mean by buckle? did the rim go out of true, or is
>there some kind of distortion in the material? are you really sure it
>happened so quickly?
>
>venuses are kind of weird rims. they're lighter than al rims as deep
>as them tend to be. i believe the extrusion thickness of the walls of
>their "V" is thinner than normal.

 

[landotter]

On Aug 30, 5:45 pm, [email protected] wrote:
> It definately happend quick. It is an actual distortion. I wish it was
> just out of true. They say it is not repairable.

Yeah it is. Sun rim: $35 + labor to re-rim, maybe $30-40.

 

[Joel Mayes]

On 2007-08-30, [email protected] <[email protected]> wrote:
> I have a 700c road wheel sun Venus. Between going into the shed an
> coming out I got a slight buckle in the sidewall of the rim; LBS tells
> me it is right on the "join" on the side of the rim. The only action
> was pump up the tire. To approx 120psi. I am fussy; No potholes, bumps
> etc. Very confusing. Can 120 buckle a rim???

How old is the rim?

The sidewall wears away a little each time you use the brakes and will
eventually (years and 1000's of km later) fail with the sidewall of the
rim being puched outwards by the presure of the tyre.

Run a finger across the sidewall on the rim and I'm willing to bet it's
got a ) shape to it.

Cheers

Joel


--
Human Powered Cycles | High quality servicing and repairs
[email protected] | Affordable second hand bikes
(03) 9029 6504 | Bicycle reuse centre
www.humanpowered.com.au | Mechanical and on-road training and instruction

 

[Nate Knutson]

On Aug 30, 3:45 pm, [email protected] wrote:
> It definately happend quick. It is an actual distortion. I wish it was
> just out of true. They say it is not repairable.

Is the distortion kind of like a shallow dent located somewhere
directly above a spoke?

 

[[email protected]]

On 31 Aug 2007 03:06:54 GMT, Joel Mayes <[email protected]>
wrote:

>On 2007-08-30, [email protected] <[email protected]> wrote:
>> I have a 700c road wheel sun Venus. Between going into the shed an
>> coming out I got a slight buckle in the sidewall of the rim; LBS tells
>> me it is right on the "join" on the side of the rim. The only action
>> was pump up the tire. To approx 120psi. I am fussy; No potholes, bumps
>> etc. Very confusing. Can 120 buckle a rim???
>
>How old is the rim?
>
>The sidewall wears away a little each time you use the brakes and will
>eventually (years and 1000's of km later) fail with the sidewall of the
>rim being puched outwards by the presure of the tyre.
>
>Run a finger across the sidewall on the rim and I'm willing to bet it's
>got a ) shape to it.
>
>Cheers
>
>Joel

U r right Joel. That is exactly what it feels like. The rim is 9 years
old. Bike has had litte use though. Thanks for comments guys.
Appreciaited.