Select to expand quotepowersloshin said..
Macroscien you told us that you have a 9.8 so why don't you go out and test it yourself? Most of the answers you are getting are from people that have never tried a 9.8 on a 118 board.
With the formula I can hold the 10.0 until about 17 knots, after it's hell, but the formula is 100 wide.
That is right. That is what I am going to do, just waiting for wind to cooperate.
The reason for my inquiry was to prepare correctly and keep in mind all you said all above.
I can see problem now, as said above. My board could be too narrow at 69cm and already I need to step sometimes outside to the board edge with my 8.0 .
I hope I will let you know in next few days if wind cooperate (12-17 ktn) to test 9.8 and 118L combination.
Select to expand quoteGestalt said...
20-25knots today.
off ya go!
or should I say up up and away! 
Thats not enough wind for a 9.8!
You see a lot of people post on the GPSTC website that a using big sails and boards with small fins. I can only assume they must be really powered up and/or setup for off the wind sailing. Otherwise I cannot see myself how it would be that much fun, if it was in marginal conditions fighting with the fin.
Personally when I'm using my bigger gear in marginal conditions I like to have the recommended fin for the size board and sail eg 112litre board, 7/7.8 sail with a 40cm ish fin and have a lot of fun just cruising around.
Select to expand quoteJezstrt said..
You see a lot of people post on the GPSTC website that a using big sails and boards with small fins. I can only assume they must be really powered up and/or setup for off the wind sailing. Otherwise I cannot see myself how it would be that much fun,
small chop, shallow water, flat water, I have a vid up on the gps page(www.seabreeze.com.au/forums/Windsurfing/Gps/PRIMBEE/ )on a smallish board and 7.2 n/p7.2 rsr and a 20cm fin, trust me but i'm having a great time maybe a bit under finned at times but don't have any problems to windward , im not sure what you mean by set up for off the wind , I would imagine to sail off the wind you need to be able to sail to windward
Nice video, looks very flat and shallow
I wouldnt call that chop 
haha i was talking about bigger boards with pointers not custom weed fins on small boards..
What I meant by saying off the wind, people sailing for max speed deep off the wind, not setup for best possible speeds for say accross the wind sailing in choppy conditions which you might setup for, like for going for a 1hr
Select to expand quoteGestalt said..
20-25knots today.off ya go!or should I say up up and away!
maybe try with extra long harness lines, and boom not too low, formula style...but i don't think it will be a pleasant combination.
20 knots was about my limit with the 8.5m on the formula board. maybe a touch more, but that was because the sail was too small. 10m would have gotten me up to 25 apparently. 
more downforce on the nose.
oh and I;m talking bay swell here not flat water.
I spent a few year mucking around with 70cm slalom boards and long fins (60cm+) trying to get going on flat water and large sails. 9.5m 10.5m etc.
the control was missing. once you got up to speed the boards started to porpoise.
god I love the wide revolution.
Select to expand quoteJezstrt said..
Nice video, looks very flat and shallow
I wouldnt call that chop haha i was talking about bigger boards with pointers not custom weed fins on small boards..
the next day there was a bit of swell so opted for smaller gear 76lt and 6.2
www.seabreeze.com.au/forums/Windsurfing/Gps/Primbee-20092013/
Rig for the lulls and hang on to the rest, works for me when i'm on a 7.4 and Futura 122 MFC fin and other guy's are sailing 5.5 with 105l. What ever works for you then thats cool.
Select to expand quoteGestalt said...
20-25knots today.
off ya go!
or should I say up up and away!
I sailed this afternoon at Wynum. 16 to 23knts on my hand held wind speed meter at about 4.15pm. This correlates pretty well with wind speed measurements at inner Beacon at the same time. So I'm pretty confident the wind was around 18kts with gusts over 20kts. I sailed my futura 111 with a 6m sail. My gear was slightly bigger than every one else out. The others were on 5.5m and similar sized or smaller boards.
I am 87kg. I was we'll powered up. I would not have wanted to carry a bigger sail. A 9.8m would have been out of the question.
Select to expand quotekeef said..Jezstrt said..
Nice video, looks very flat and shallow
I wouldnt call that chop haha i was talking about bigger boards with pointers not custom weed fins on small boards..
the next day there was a bit of swell so opted for smaller gear 76lt and 6.2
www.seabreeze.com.au/forums/Windsurfing/Gps/Primbee-20092013/
Yer a few small ripples on the water in that one
Nice vid, looks like a nice spot to sail in some flat water
Select to expand quoteGestalt said..
20-25knots today.
off ya go!
or should I say up up and away!
I was today twice on KFC with my 8.0 but didn't unpacked. Not enough for my 8.0 but could be right for 9.8 which I left at home expecting this 25
unless all green I could not get planing that is why I need 9.8
hmmm something wrong with your technique macro. i sailed many years on the broad water and elswhere in qld.
the sail size you need - for a guy your size is just wrong. no amount of bull**** talk will convince me otherwise. something just aint right with whats happening in your sailing.
Select to expand quoteboardboy said..
hmmm something wrong with your technique macro.. something just aint right with whats happening in your sailing.
Absolutely right. 
I actually never said anything contrary. I have the poorest light wind technique on the planet
But there is nothing I can do about that and I could only compensate by having bigger sail (so I need 1 -2 m2 more then you to have the same effect in light winds )
I find al ot of people dont pump not saying this is the case here but you need another 5 knots if you just sit there waiting for the wind to get you on the plane 
Select to expand quotevando said..
I find al ot of people dont pump not saying this is the case here but you need another 5 knots if you just sit there waiting for the wind to get you on the plane
That's me 
I don't know how to pump or don't have that power
I only manage to pump a bit if need to do a gybe then getting a bit more speed helps a lot.
My problem with pumping was usually that if I managed after pumping had a bit of planning, instantly go back down when only stopped.
So eventually finished only more tired with same result. No planing. So I pump only before gybing if need to because that is only for very short period.
Select to expand quoteGestalt said..
are you using the right mast for your sail? because that can be a bad outcome.
possibly not. Most of my masts are just cheap 30% , beside masts 520cm for 9.8 and ( never told you so but I have also 12.5m2 on 550 cm that I want to use later !! I can not find so far sufficiently long boom on SB , still looking and obviously I don't have board to that either - unless I could try on my 130 L Fanatic 70 cm wide 
) .
Masts and booms for bigger sails I bought from good racing guys on SB, so that obviously much better quality that my small gear.
Select to expand quoteMacroscien said..vando said..
I find al ot of people dont pump not saying this is the case here but you need another 5 knots if you just sit there waiting for the wind to get you on the plane
That's me I don't know how to pump or don't have that power
I only manage to pump a bit if need to do a gybe then getting a bit more speed helps a lot.
Thats ok Gestalt doesn't pump either
Select to expand quoteGestalt said..
god I love the wide revolution.
What could better choice for low wind :
big slalom JP
or
Ultra Light Wind JP
( all around our Broad water) ?
for that 9.8m
depends on your weight.
me i'd run a formula board if i wanted light wind blasting. a lighter person would go a wide slalom board.
Select to expand quoteMacroscien said...Gestalt said..
20-25knots today.
off ya go!
or should I say up up and away!
I was today twice on KFC with my 8.0 but didn't unpacked. Not enough for my 8.0 but could be right for 9.8 which I left at home expecting this 25
unless all green I could not get planing that is why I need 9.8
The wind was 5kts stronger on Morton Bay
Tested today at marginal wind 9.8m2 + 118L/68 +42cm
First time I could at last plane in such low breeze.
Fin 42 cm a bit to small ( the biggest I have) and I need to be very careful with back foot pressure to avoid spins, but workable.
it will work, but the downforce of the rig will push the board into the water, so with out a very efficient pumping technique it will be struggle town...
im 115kg and i used a 7.8 on a 86 falcon in 16-17knots, it worked but having a bigger sail certainly didnt make it easier to get going, it was so hard to get planing and once i was planing it was still struggle town and as soon as i hit a lull i was off the plane.
Select to expand quoteMilsy said..John340 said..
I have a similar question.
Has anyone successfully used a 8.5m slalom race with a 111 litre Futura in sub 15kt wind? Does it help planning in these lighter winds over a 7.5m sail or does the extra weigh counteract the larger surface area of the sail?
I use a 42cm black projects slalom fin. At this stage I don't have the option of a bigger board.
i think u can pretty much so do anything, i've had an 8.7 on a 92l jp slalom, its ok, but its really to no advantage, but a futura 111, about 68wide, it will take an 8.5 in lighter winds, sure why not, a 42cm fin might be a bit small, good luck johnny boy
I tried the 8.5m with the 110 Futura on Sunday. It definitely got up and planned in lighter wind than using the 7.5m. However it was not very comfortable, the sail is heavier, harder to gybe and the fin did not feel very secure.
I'm better off sailing my longboard in sub 12Kt conditions.
