Ok, update time:
So, I went out to compare the 18s vs a pair of 20 rears. 18s were fun in the enduro trail ( mixed hard and soft sand, rocks, jumps)
Lots of sideways!
But, I found myself changing gears much more...
I then went to the MX track, where it was fun, until I got stuck on a very steep hill... sand and gravel got wedged into the chain and caused the wheels to lock. Could not even move it in neutral. The chain was so tight it was making a squeeking noise when attempting to move the bike.
After a lot of wiggeling I eventually it a bit free. Started, and rode it off, slowly.
When I got back to the pits, everything was normal and the chain slack as it should be. This lead me to believe the gravel got stuck between the sprocket and chain, causing the lockup.
Sooo, 18's on a blaster suck. Its my secont time caught in sand. ( too little ground clearance and too much wheespin)
The only positive of the day with the 18s was that my jumps were MUCH better. Landing was almost perfect everytime vs batteling to keep my nose diving...
Is that just me getting better at jumps ot the smaller rears???
20s for next time, and will try the jumps again.