Originally Posted by
bbbean
The original post: "So i wanted to save some money and just repair inner tubes with a patch kit. I was wondering if this would increase my rolling resistance?"
I have no idea if he's a racer or not, but the question was "I was wondering if this would increase my rolling resistance?". It's an interesting question. People do a lot of things to go faster, and they add up. The concept of marginal gains has been around for a while and for a reason.
No, all things don't always "add up". There is also not much reason to worry about tiny things if larger contributors are not being done.
There isn't any clear reason to expect that there would be any marginal gain at all related to having patches tubes.
It doesn't seem worth discussing the effect of patches without knowing what tires he's using.