Rudders

I wonder if Dotan.com can make me a set of rudders? here is what mine look like!

Hey guys, is it just me bad eyes or does it seem to you that rudder is on backwards? the thick edge of the rudder is supposed to be the leading edge and the thin edge is the trailing edge, in those pics it looks the other way around, might just be a bad angle .... :-O

soulsailor?

well i only had the boat since Nov.2011 so i put it back the way it was in summer , and the rudders do kick up if i hit something so if it is then backwards then the guy i bought it from had them backwards too!

I think its a poor desgin rudder from 1980 ! i would like to make some but i never did before i was going to trace these ones, then make it a little thinner! I have no idea what i am gonna do right now its cold here and i cant function! 🙂 I wish i had a huge garage to work in i wanted to have the boat all put together and back it into a nice warm garage! But that is just a Dream.

Do a quick check and see if the leading edge is thicker than the trailing edge, could be that is your whole problem, the rudders work just like the wing on an airplane, thick edge points in the direction of motion.

Oh OK that makes total SENSE! I will do that well i have a picture up top with measurements... hmmm im gonna look

looking at damienb's pic of rudders above, the cat would be moving to the left

i don't know if i understand those numbers and this rudder is leaning to further stern it seems, i need it to go toward the front under boat i think a little?

the-renovator wrote: Hey guys, is it just me bad eyes or does it seem to you that rudder is on backwards? the thick edge of the rudder is supposed to be the leading edge and the thin edge is the trailing edge, in those pics it looks the other way around, might just be a bad angle .... :-O

Is a lock down mechanism not interglacial in the upper portion of the leading edge? Is so it would be awful hard to put them on backwards. Also looking at the pic linked below they look to be the same.

Edited by Rider_55 on Jan 16, 2013 - 12:04 PM.

Don't look at the numbers, just picked the diagram to show the elliptical shape of the rudder to show the thicker edge pointing in the direction of motion. Is your Reynolds close at hand? if so, brave the cold and check to see how the rudders are mounted. The other thing I wanted to ask you, how do your rudders lock down?

good pic Rider, shows the Reynolds rudder quite clearly, quite thick front to back and shows the pivmatic type lock-down system. SoulSailor, it seems it's me poor eyesight that faulty, not your rudders, so have a look at robpatt's suggestion on your rudders above

or you can use marcs2 suggestion of mounting a spacer under the top gudgeon. You are quite correct in your reasoning that the rudders need to move more under the boat, the easier method would be marc2's suggestion to insert a spacer. When the weather warms up a tad..... 😆

Edited by the-renovator on Jan 16, 2013 - 12:50 PM.

This is what i added to both rudders for keeping it down.

Edited by soulofasailor on Jan 16, 2013 - 02:18 PM.

soulofasailor,
have you tried contacting the designer of your cat, randy reynolds?
he might have some suggestions.

http://xs35cat.com/r33/en/designers/index.asp

http://xs35cat.com/r33/en/team/index.asp

http://xs35cat.com/r33/en/owners/rs21.asp

Mailing address:
Reynolds Design
16033 Bolsa Chica Street, # 104 - 216,
Huntington Beach Ca 92649
Tel: (714)-377-7454 Fax: (714)-377-7485
Toll Free: 800-DO MULTI (366-8584)

Email the designer: RR714@R33.com
Email: info714@R33.com

Boat Assembly Shop address
15611 Product lane B-15
Huntington Beach Ca. 92649

This is what Rob is illustrating. This is a really simple solution and I have done it more often than you can imagine. If you don' like it just build it back up.

@Arch

i have tried emailing Randy, he has never returned any of my emails. so this is why i am here, i found a guy that is suppose to be close to RANDY he has a R21 in California he says Randy doesn't want to be bothered with his old designs! I find that SUCKY to say the least! I think the boat has potential just need some tweaks I emailed WINGZ i know they are no longer if i could just purchase some items that would solve some issues i have! I wish i had the Money the Room to rebuild this boat. With a little mods this could be a little rocket! Which it is already Plus with new sails coming to her who knows what she will be like?

[quote=soulofasailor]I wonder if Dotan.com can make me a set of rudders? here is what mine look like!

You can ask....

The other quick solution:-
1) take the rudders off
2) take the rudder castings off
3) unbolt the top gudgeon pins from each transom
4) insert SS spacer (1/4"?)
5) apply silicone

re-assemble, go sailing, quick & easy.

In his original post he indicated that he had a lee helm, spacing the top gudgeons will increase the lee helm.

the-renovator wrote: The other quick solution:-
1) take the rudders off
2) take the rudder castings off
3) unbolt the top gudgeon pins from each transom
4) insert SS spacer (1/4"?)
5) apply silicone

re-assemble, go sailing, quick & easy.

Just so you all KNOW, i have contacted Dotan Maritime Industries Ltd we are talking now, i am gonna find out if they have something that will work for my boat and how much! I am sure it will be a ARM and a LEG!

You might try putting a spacer of some sort on the inside of the lower portion of the rudder casting to prevent the rudder from going to far forward. Maybe gluing or using 5200 to adhere a thick piece of rubber. If it did not help it would be easy to remove.

I think now that i have talked to all of you and heard all of your ideas and things, and i have noticed too that the rudders have no shape they are almost the same looking from front to back and sides i need a rudder more like a WING of a Airplane shape, and more forward i think, it needs to be more under the boat! I intend to keep this boat for a long while, and maybe add a Hobie cat to my Driveway later, so i had something to take quicker if i was going somewhere. so I am just looking around but i do like those 20 footers I like BIG cats! Something that i have less likely to FLIP! BUT FAST 🙂

Reading this thread makes me dizzy!

Hey I found another one! http://www.thebeachcats.com/classifieds/catamarans/p12488-reynolds-21.html

its near me i saw it on cl

Optikid. where are you exactly and how do you have those flags on your cat ? what type of pulley systems did you use your cleats or something ?

man that R21 is in bad shape, such a pity........ :schaem:

im in sarasota and it shows in the sarasota cl. the bottom of the flags are tied to a reefing point, then tied together, then to the end if a batten

http://sarasota.craigslist.org/boa/3542539910.html
i think he is using a video of your boat in his ad