View Full Version : Plans for 21 rigger
haljmac
07-16-2003, 12:57 AM
I will soon have complete plans for 21 out rigger. Full size drawing, 1 to 1 scale.
hydroracer
07-16-2003, 10:27 PM
sounds great haljmac! give us some details. did you design it? got any pics of a finished hull? :)
haljmac
07-17-2003, 11:56 AM
Its my own design. I will have pics. up in the near futher. I am testing the hull with a stock CMB21 LS, running in the mid 50's. Looking to get it up into the 60's. So for it has been a very smooth running hull, and takes the turns well. The hull is made of 3/32" and 1/16" plywood, with .414" carbon fiber boom tubes.
hydroracer
07-17-2003, 11:57 AM
alright! keep us posted :)
haljmac
07-17-2003, 05:54 PM
21 Outrigger complete, with the CMB21 LS
haljmac
07-17-2003, 05:59 PM
different view
hydroracer
07-18-2003, 12:10 AM
that looks great! can it tackle a super sharp turn at high speed? i notice there aren't any rears...
haljmac
07-18-2003, 11:12 AM
Yes it does handle the turns. There is one sponson for the rear. It turns sharp and smooth. It does not have any hop on the SAW or in the turns.
hydroracer
07-18-2003, 05:45 PM
sounds like you've got it pretty well dialed in. have you played around with the AoA on the front sponsons?
haljmac
07-18-2003, 06:32 PM
No I have not, have not seen the need to just as yet. Its running just on the tips.
hydroracer
07-18-2003, 06:50 PM
well, if it's not way loose already, you may get more speed yet by increasing the attack angle. just something to fool around with.
btw, the reason i ask about the rears is because the last rigger i built, i used just one center ski at first and i had trouble with hooking in all out sharp turns. after i added 2 side rears, the problem went away and i could hammer it right at full throttle.... no spinout. seems the current trend is a single rear, but i've had better luck with 2 or 3 rears.
looks nice... keep us posted!
haljmac
07-19-2003, 10:55 PM
went tested some more today, too see what would happen at full speed with a hard right turn. Made about a 15' circle, it made a couple hops, kinda expected it to just break loose. With a tight turn like that I can handle it hopping a couple of times.
FlyerCAN
07-20-2003, 01:01 AM
That would be nice to see on vid!!
haljmac
07-24-2003, 08:22 PM
Just put it on the scale. The hull, with, the cowling,turn fin, sturt and rudder, weighs 1lb 9-1/2oz. Total weight with everything in place, weighs 3lbs. 4-1/2oz.