Warning, exhaust fumes...

[duff_duffy]

I was at shop yesterday and saw these warnings on a few wheelsets. With all the things in the world to warn against, is this really necessary? I can think of a few other warnings I’d put on wheels before this.

[R3awak3n]

someone somewhere left his bike behind a car that was on and the exaust was hot so it melted the wheels so now they gotta put that silly warning on the wheels.

[Spaghetti Legs]

That used to be a common argument against trunk and trailer hitch racks, even before plastic wheels.

[tuscanyswe]

Wish my corima had that sign .) I managed to get a nice bump on my rear rim as it was riding behind the car for an hour or 2. They still ride fine but..

[GregL]

Originally Posted by Spaghetti Legs

That used to be a common argument against trunk and trailer hitch racks, even before plastic wheels.

^^This^^ There have been multiple cases where bikes wheels on hitch racks incurred damage from hot vehicle exhaust. Google "bike wheel exhaust damage" for multiple photos.

https://www.bicycling.com/repair/a29...carbon-wheels/

http://www.santacruz-pl.com/wp-conte...nik-na-hak.pdf

Greg

[Elefantino]

He/she who puts carbon hoops near vehicle exhaust must also be warned that coffee is ... hot.

[parris]

I first saw this in the late 80's when one of our customers brought in his bike with a well cooked rear wheel.

[Ozz]

I had a strap on a trunk mount bike rack melt cuz it was too close to an exhaust....it was a pretty low end Yakima rack.

Noticed it when on the freeway and saw the bikes moving in the rearview mirror. I pulled over, to take a look.....strap was too close to the exhaust (doh!) and melted all the way thru. Did a little MacGuyering and got back on the road.

Contacted Yakima, and they sent me a new strap, and an attachment for the exhaust to redirect past the straps.

This was probably about 1988 or so.....good lesson to learn on a cheap rack and cheap bikes.

[Bruce K]

That’s why I always loved the Thule Space Station.

It rode higher up and with the front wheel off

No issues with heat

BK

[brewsmith]

Happened to me on a long trip up the mountians with a cheapo rack. Luckily my wifes bike had Al rims, but the brand new veloflex never stood a chance

[R3awak3n]

Originally Posted by brewsmith

Happened to me on a long trip up the mountians with a cheapo rack. Luckily my wifes bike had Al rims, but the brand new veloflex never stood a chance

I mean, I have had veloflex just disintegrate in 100 miles just by riding on beautiful pavement so to me they never stood a chance, exaust or not.

[Ken Robb]

I burned through a tire and tube that were too close to the exhaust gasses when the bike was on a Hollywood Rack behind my M3. The bike was a Gary Fisher loaner that I borrowed from my LBS for my wife-to-be to use on the Big Laguna Trail east of San Diego. I had extra tubes along but I had to boot the tire with a $20 bill so we could do the ride and we were VERY glad we didn't have to drive all the way back to town for a new tire. The shop owner thought the story was very funny and he only teased me about it for 10 years.

[VTR1000SP2]

A few years back, I heard from someone at a shop about a carbon rim that had warped beyond repair from exhaust heat during a road trip.


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[batman1425]

Yep, seen this happen. If you have a hitch rack, worth checking that the exhaust isn't too close to the bike.

[joevers]

Rear racks are common. I have a friend who melted a wheel on the way home from a cross race. It definitely happens.