I will just try and answer the questions presented and then maybe add a bit at the bottom
but.... im worried that the whole massive slack when cranking forward is going to really annoy me... is this just something that you get used to??
The gap isnt an issue if you know its there. at the most it will be a quarter of a turn and its very easy to get on your bike, take that quarter of a turn to make it engage then take off. there are times when you get on your bike and it may be engaged already from when you stopped pedalling before as you didnt pedal backwards to disengage. The gap itself is one thing i was a bit unsure of also, but i have ridden my friends bike with an odyssey freecoaster and got an understanding of how it all engages and disengages.
The only disadvantage with the gap, and probably with the whole freecoaster design is that due to the gap and that you disengage it all by pedalling backwards, is that you cant bitch crank to drop in. It really doesnt effect myself too much as I VERY rarely drop into anything, but for those that ride park a heap i think its going to be an issue, so keep that in mind.
Im running hte largest gap i can and i wouldnt have it any other way.
and the other thing, i know that none of you run a reverse, but how high is the maintenance?? im a bike mechanic, and i love doing work on my bike, but not the extent where im working on my hub for a few hours every fortnight...
I obviously cant talk about how the reverse is, but pulling the geisha apart is so so so so so easy. I printed the instructions off the net thinking i would be using them, but i had read through it a few times and had no issues. The hardest part i found was getting the driver off as instead of it spinning straight off like a normal threaded part would i had to spin it around a few times until the thread from the driver would come apart from the.....bit it screws into, i dont know what thats called. it wasnt even really an issue.
Reading things about the 3 piece axle, i thought taht would be a bit of a dodgy thing to work with, but its very very simple. It actually makes sense for it to be 3 pieces, it seems alot simpler to work with as you can seperate the parts so nothing is mixed up.
Greasing it up, i have only done this once and i dont think i put enough in there as its slightly noisy. Everything still works quite well, but yeah its a bit noisy and 'rough'. Other than greasing it up and making sure its clean. i dont see what other maintenance you can do to it. Make sure the shell is nice and buffed??@?!
THe time to pull it off your bike, take the hub apart to grease it and put it all back together is seriously no more than half an hour. When i got it i pulled it apart and adjusted the gap then put it all together whilst my girlfriend was in the shower. very simple. im probably repeating myself, but its very simple.
So in summary!
Dont just get a coaster because its hot or sick or you think itll get you the chicks. chances are girls wont even know you're running one.
There are definitely disadvantages to the coaster, but you need to work out if they are a disadvantage to the way you ride. i find it isnt as if i ride street 87.5656percent of the time and when i do go to a park i ride the ledges and banks. riding transition doesnt interest me.
I love mine and at this point in time wouldnt want to run anything else. its a well built hub, it does everything i want it to do and i figure maintenance on it really wont be that hard as long as i grease it regularly.
ok that should be about it. sorry if i repeated myself or stuff that other people said. this hasnt been proof read.