I'm in the process of replacing ropes on my RS100. So far, from reading this forum, I've worked out that the kite halyard should be 16m, and probably 5mm.
 
 
What length/diameter are recommended for the kite sheets and main sheets? All I know is that the current ones (as supplied I think) are too short!
 
 
Any guidance much appreciated.
 
 
Thanks,
Nick

I actually got them shorter than the original ones, mine are 9m long (6mm thick), 1.5m tapered ends. If you really then want them longer for some reason, it's very easy to extend them using a piece of Dyneema.
My halyard is in the end slightly over 16m (I'd say 16.3). 
 
Best, Alberto

While I cannot be certain of lengths off my head, my comments are:

Main Halyard: needs a couple of inches cutting off evry 3 or 4 months.  We have almost all experienced the halyard snapping when on the water because it does degrade and wear out over time at the point it attaches to the main.  Consequently one wants to buy a long halyard so it lasts longer.

Spinnaker halyard: the original one was horrid and about 50 cm short for me.  I replaced it quickly and haven't had too many problems.  It's length is governed by it sitiing neatly when kite stowed, but being long enough to not distort the kite when the wind goes light.

Main sheet: Mine was about a metre short.  This only matters when it's suoer windy when you want to be at the back of the boat letting the main out to bear away.  I replaced mine last year with I think 8mm special soft sheet from RS (don't know it's name).

Spinnaker sheet: I went thin with 6mm sheet (again can't remember it's name) but added about a metre to length from the original.  This was again so I could let out enough sheet in the windy stuff when hanging out the back.  Others think 6mm is too thin.  I think they should man up!

Kicker/Cunningham.  I am completely converted to 3mm Excel Control, which is brilliant for a super smooth join in a continuous control line (Al Hall has gone for the 4mm version).  I also added about 60cm to the previous length, expecially for the kicker as the standard length I found to be too short to allow full release of kicker in light wind.

I will update with rope lengths when I next see my boat!

David

My kicker and cunningham were wearing badly at the splice so I've just replaced them with 4mm Excel Control. The original lengths were 8m for the kicker and 7m for the cunningham although I have made the replacements slightly longer. Don't forget to add some extra length to take account of the splice! There is a great video on YouTube by Marlow/Rooster showing how to do it.