Originally Posted by
Winfried
Hello,
I've already had my share of pseudo-punctures that were actually due to leaky patches

To make matters worse, Marathon Plus tires are a bit of a pain to remove/fit back on a Brompton.
So I was wondering if…
- I'm doing it wrong,
- I should get a better brand of patches
- Like life and parties, patches weren't made to last.
Thank you.
How many times did you try to fix that? It looks like at least 3 and one of them looks like duct tape.
Patches will last just fine...as long as you start with a good one. Most every patch kit you can by that isn’t packed in a green box with a red and green label is
not a good patch kit.
Get Rema Tip Tops or you are just wasting your time. People will argue the point but Rema’s have chemistry on their side. Where the other patch kits use rubber cement, Rema has a two part system on their patches that makes new rubber when the two parts are combined. The vulcanizing fluid of Rema contains an accelerant and the patch contains a crosslinking agent. The bond is much more permanent than with just plain rubber cement.
You also have to prepare the surface properly. Sand it well so that there is fresh rubber showing. Sanding...even with instant patches...is important since the tube is coated with a release compound that will interfere with any kind of bonding system. The release compound is used to release the tube from a mold.
Perhaps most importantly, the fluid has to dry
completely. You can’t wait too long. If you are on the road and need the patch to work, 5 minutes is the minimum. If you are at home, let it sit. I’ve forgotten patching jobs and let the fluid “dry” for weeks. They still work and work well.
Finally, sure tubes can cost less then $5 each. But a patch costs pennies. I
could replace a tube every time I get a flat but some of my tubes have up to 30 patches apiece. That $150 vs maybe $15 for 30 patches. And I’ve kept 30 tubes out of the landfill. Carry an extra tube with you, replace it (after carefully checking the tire for any other punctures), and fix the puncture at home.