Karting??..

There's a long straight away and a couple short straightaways.. that was my same thinking to get it to Max RPM (6100 rev limiter) at the end of the longest straight away. BUT.. the longest straight away is only a small portion of the track. It's made of seven corners... Exiting those corners it's probably where time is picked up... So I'm almost thinking I would want to be banging off my rev limiter sometime before the end of the straight away as to give me more RPMs exiting corners? My current theory I'm cooking up LOL.. I have a 16 front sprocket and I had a 59 and was doing about 5,500 RPMs at the end of the straight away. That was before I had the beacon to tell my lap times... so with that small bit of information I put a 62 sprocket on the back and was up to 58-59 hundred RPMs as you can see on the mychron. And finally got a lap time as a benchmark.
All I have to fall back on at the moment is my drag racing and I do remember a 5800 RPM shift point yielded the same as a 6800 RPM shift point. So there's something to be said about torque as well... And where its maximum is with these motors. Who knows I might be going back down to the 59 to see what it does... I do like the possibility of getting a taller sprocket and trying that. But what I really have to do is get seat time to get more consistent with the kart. The good part is I have a lot to learn and that will keep me interested...
The thing is, if you're reaching max RPM at the end of the longest straight, you have a lower gear to help the kart out of the corners and onto the straight. I wouldn't want to bang it off the limiter, even if it is just for a moment since it is a box stock engine. Torque may be more in play for your engine now, my bench mark is an honest 9k rpm 5 horse Briggs engine we used to race, so we tried to keep it up near the hp peak. Most of them even lived a season, although people would swear to pull them after 13 races and freshen them. We never lost any time so Dad said that's not happening.