Man-o-man what a exciting day, arrived at Ramoser Technik little earlier than appointed time & as Christian was not yet there, so Hannas looked after me & took went one of their workshops where he introduced me to the Sprinta RC, … they just take your breath away 120 cm LOA with 40 cm beam and they are perfectly constructed and in every detail they look like a real boat.
Comparison was very easy as Christian joined us and showed his original sized Sprinter (the orginal inspiration) with his RC version that’s Christian Ramoser in the first pic with both of his pride and joys. Then we spend next 2 hrs going into great detail.
Firstly, the video we have been looking at was mis-leading as some aspects were only ideas the owner was trying to explain was needed improve the main sheeting which I will come to in little bit.
Finally have the answer about the sheeting system, there are only two lines going in/out of the one winch (green lines), so how’s the main sheeted ? it is the Red line that goes from the ring on Genoa circuit that travels to the block at the bow and then through hole in front of the mast, under the mast foot and the comes out through hole behind the mast foot and along the boom down into the cockpit traveller (which does not move) and ends at the servo horn on starboard side.
Therefore, main sheeting runs off the Genoa sheeting circuit 
The Sprinta uses an RMG for only one reason, it’s the only winch on the market that provides the 9 rotations @ 10 kg.cm of the huge drum to fully sheet in from port to bow tack and it does it 1.8 seconds 
Christian says he always on the look-out for less expensive winch, but yet to find anything else that’s up to the job. btw Claudio they sell the Genoa winch system seperately.
The Starboard servo is used only for main sheet trimming independent of the Genoa, where you can have few cms trimming adjustment under sail. It does only have small influence on main twist.
This is a one design class boat, where every boat is exactly the same for racing the only real personal adjustment is in how you wish to program set-up transmitter for Genoa and main sheet trimming controls.
As Main & Genoa share same circuit the sheeting is as normal left stick (up & down) when “centred” is sheeted full out for running, stick down is closed hauled port & stick fully up closed hauled starboard.
When going about as jpparisy says, the main does go loose and this is where skill in timing comes into play by the skipper where need to trim main to avoid losing main boom position, this can be done by either programming up/down sheeting stick to have side-to-side main trimming control or program the transmitter trimming adjuster to perform this function.
Sailing the boats takes some getting used too which is just matter of practice by to become a master takes lot of practice to learn the skill.
Christian & Hannas are working on a way of braking the main sheeting when going about, but nothing is at final production level yet, as said earlier every boat is exactly the same for racing and Christian says that until they can find solution that can be retro-fitted to all boats already built (some 70 so far) it won’t be available for racing, like this guys thinking, everyone has same gear available, no matter how old boat is, my type of fixed class design ruling.
After crawling over every millimetre of the boat it was time for test sail, didn’t see any lake coming in but … low & behold Christian dug out his backyard and turned it in a sailing pond, this guys a real smart cookie, no mowing lawns on the weekend, just pull up chair on balcony open a beer and race your buddies around the backyard until the sun sets…cool.
Unfortunately there was really no wind, which brought me to the subject of butter-flying a Genoa, light wind takes some skill to get the genoa to open (no counter balance like on Jib) however, when wind does come up there is very small batten (carbon) running entire length Genoa sail foot which helps open.
Hannas, will be hopefully joining our site and encouraged him to open Specific Sprinta threat, to answer & share this great boat with us. Christian & Hannas thanks for a great afternoon together and in my humble opinion you have the greatest value for money RC sailing boat I ever come across but most impressive of all is that it takes some realistic sailing skill handling these babies that got me instantly hooked, thank you.
Cheers Alan :zbeer:
man-o-man this has me stumped.