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Ya that's brown rice falling out. These bags were supposedly designed for sport bikes with upright facing exhausts and apparently are specially lined to be heat resistant and able to sit in front of the exhaust.

Came home from a grocery run to find that my frozen salmon fillets were fully thawed, my sweet potatoes transformed into baked potatoes, my cinnamon sticks became charcoal, and my rice bag melted 🙃

I've done groceries maybe a dozen times with these bags without issue but I guess the bag got a little too close to the exhaust. I spent all day today scraping dried molten plastic off my exhaust pipes and trying to pull rice out of my exhaust baffles (only got 2 grains out 😣).

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[-] pr0xy_prime@lemmy.world 11 points 5 days ago

Lol the saddle bag melting should be the least of your worries. You're coating the bag and everything inside of it with cancer causing chemicals. Even if it didnt melt you'd be eating straight cancer for dinner

[-] PerogiBoi@lemmy.ca 9 points 5 days ago* (last edited 5 days ago)

What, you're telling me that exhaust flavoured food might have health concerns???

I tossed everything in that bag. Not very interested in some specially seasoned salmon, sweet potato, and rice 😁

Here's the sweet potato:

[-] Onomatopoeia@lemmy.cafe 7 points 5 days ago* (last edited 5 days ago)

After finally being able to watch the video, I'd never expect a material bag to tolerate that - it's directly in-line with the exhaust and even slightly above it.

Even if the bottom of the bag were an aluminum plate, I think that plate would simply transfer heat into the bag.

It would require something like a lower plate, an air gap, and another plate, to ensure a heat break.

Or a plate on the exhaust directing the output more horizontally for the length of the bag.

Also, sorry this happened, that's a bunch of crap from the manufacturer.

[-] PerogiBoi@lemmy.ca 1 points 5 days ago

Ya when I first received them I was super skeptical. Like no matter what, these bags on any sport bike with upwards facing exhaust will be in direct line of sight from exhaust gas. Zero issues all last year but my very first grocery run this year everything went to shit.

These were purchased from a motorcycling store and made by a company who makes saddlebags for motorcycles so I put my trust in that. Evidently, I shouldn't have.

[-] isVeryLoud@lemmy.ca 3 points 5 days ago

Possibly too much weight made the bags sag just enough to be in the exhaust's line of fire.

[-] NannerBanner@literature.cafe 6 points 6 days ago

Well that sucks. I'm trying to remember where my saddlebags drape, but they're definitely not in any possible line with the exhaust vent, nor are touching. I think my actual panniers made for the bike have a metal shield that sits between the exhaust and the pannier sort of hovers over and to the side of the exhaust.

Maybe your exhaust is just super special in how much heat it throws out.

[-] PerogiBoi@lemmy.ca 5 points 6 days ago

It's a stock Honda 500cc so I wouldn't consider it super special

[-] poleslav@lemmy.world 4 points 5 days ago

I have an NX500 myself, to be honest I went with some hard mounts that replace the passenger grab bars and hard boxes from Ali express, even with tarrifs (I’m in the US) the total was sub $500 for two boxes and a rack. Super worth it, I put it through hell and high water and they’re great. Definitely something I’d recommend.

[-] dalekirkwood@lemmy.world 1 points 10 hours ago

Done the things in your box get quite hot here on the right hand side?

[-] PerogiBoi@lemmy.ca 2 points 5 days ago* (last edited 5 days ago)

Ayy the adventure version of my bike! Love the white and black combo. Those cases look awesome. Something on rails like yours is what I'll have to get if I want saddle bags. I might just look into a tail bag in the interim. Does the bottom of the right box ever get warm?

[-] poleslav@lemmy.world 2 points 5 days ago

I wanna wrap it in something like baby blue personally lol. And yeah, I’d recommend the cheap ones on Aliexpress personally, it’s like a quarter of anything else price wise. It doesn’t line up perfectly but I’m a function over form person lol. And I’m sure it does but I’ll have to check next long ride, but I’ve never had issues with anything melting or anything getting too warm

[-] PerogiBoi@lemmy.ca 2 points 4 days ago

Baby blue would look cool too! My bikes boring and matte black. Are the mounts from AliExpress too?

[-] poleslav@lemmy.world 1 points 4 days ago

Matte black still looks great in my opinion!

And Yep! Hopefully links are allowed but these are what I got

https://www.aliexpress.us/item/3256809352147110.html

https://www.aliexpress.us/item/3256809352650569.html

Seeing one of the reviews did remind me you’ll need someone with a 3d printer. The plastic spacer bit the bracket came with may as well have been made from tissue paper, but after printing new spacers they’ve been rock solid for me.

[-] PerogiBoi@lemmy.ca 2 points 4 days ago

Oh excellent! I have a nice 3D printer so not a problem here. Thanks for the links and info!

[-] poleslav@lemmy.world 2 points 4 days ago

For sure! Keep the rubber side down amigo. The Honda 500s are phenomenal bikes, definitely sucks about the melted bag though lol.

[-] Steve@startrek.website 2 points 6 days ago

Maybe it was misfiring today

[-] PerogiBoi@lemmy.ca 2 points 5 days ago

It's a year old lol it better not be.

[-] Onomatopoeia@lemmy.cafe 1 points 5 days ago* (last edited 5 days ago)

Misfiring generally produces lower temps as fuel isn't fully combusted.

Even then, those temps will still melt nylon that's pretty close.

I suspect the manufacturer's claims are bogus, or at least poorly written and they actually mean they can tolerate the heat radiating from the muffler, not the direct exhaust.

Anything in line of the exhaust will melt over time from the long duration of exposure.

[-] TerraRoot@sh.itjust.works 3 points 5 days ago

That looks like it was sitting on the exhaust?

[-] PerogiBoi@lemmy.ca 2 points 5 days ago

It wasn't when I left the grocery store 😅 but I guess it sagged over the course of the half hour ride back home.

[-] Onomatopoeia@lemmy.cafe 4 points 6 days ago

I don't think any bag can tolerate the heat of exhaust.

When moving on the road, it gets pretty hot - even rigid bags would sag

this post was submitted on 16 May 2026
56 points (93.8% liked)

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