New Skunkworks 32" Catamaran

[BakedMopar]

I was gonna run struts also. That was my first intention because I couldn't find stinger that would fit. When I found these I ordered them to see how I liked them. After contemplating I decided to do it different from you (at the time I think only you, egneg and I had them). It would of have been cool though especially if Jeff made the outboard covers for the struts. Liking the rudder mount also. Keep up the good job.

[tth]

Thanks......Tiqueman I will get you some after work......(only god knows when that'll be)

[old guy]

From running twin nitro boats in the old days I will say this about stingers and struts. strut setups end up sticking out more than a stinger does there for when running struts you have to run your rudder back more or it will not turn that good.
You also have to run the prop a bit hirger. The boat will handel a bit better becouse you just made it longer, but you need to get the rudder back more. tth from the pics you put up your rudder would work nice with stingers but I think it needs to be longer. ( from what I can see in the picss) . Its allways better to make changes now than later. Just my 2 cents and some thing for all you guys making twins now to think about lol ( on a boat that size you should be about 2" to 3" from the back of the prop to the front of the rudder. I would be looking for 2 1/2 to 3.) But like I said before some one shoots me it's just my 2 cents lol
old Guy

[old guy]

look at post #18
http://forums.offshoreelectrics.com/...ad.php?t=13414
no lol
Old Guy

[Rumdog]

huh? Not following the intent of that last post...

[old guy]

Rumdog in post 78 I was explaining how you should have your rudder about 2 to 3" behind the prop. with struts you have to move the rudder back more because the props are farther back look at the pics tth has of his set up and look at the one in post #18 and see the dif with twins you have to have your rudder back and if you use struts you have to move every thing back more.I hope this helped if not phone me I type with one finger lol
Old Guy

[ozzie-crawl]

just my 2c for what its worth, the general rule of thumb for length of rudder/strut
is the front of the prop- transom should be around 10%.
now the closer a prop is to the hull the more chance of it porpoising
but the further back more chance of torque roll.
by going 10% its a compromise between the 2
but being a twin torque roll doesnt really apply so taking the props further back wont hurt but this may affect steering also.
the whole front of ruder being in line with front of prop i dont believe
i have built hulls (cats& monos) that way and with props closer to transom and personally found no diffrence.my current cat has the prop around 1 1/2 behind the leading rudder edge.
with twins i dont have experience and may need to be that way.

[old guy]

with twins i dont have experience and may need to be that way. yes it does trust me.
OK I'm going to let the cat out of the bag lol I was saving this for my Maritimo that is on it's way. If you want your twin to turn then get rid of that sh$tty radio and get a good one then program it to do this ( it's called mixxing) when you give it right rudder the radio also slows down the right motor so the left engine pushess the bout around the corner. Do not ask me how to do this becouse I can't even program my M-8 I got my friend to do it on my twin nitro cat.lol

the whole front of ruder being in line with front of prop i dont believe. It does not have to be in line look at all the boats out there that have it offset. In a single motor mono or cat I would put it line though.
Just more of my 2 cents and this is tth thread so that's all on this, sorry tth
Old Guy

[tth]

No issues here all the comments and inquiries are welcome........

[ozzie-crawl]

the whole front of ruder being in line with front of prop i dont believe. It does not have to be in line look at all the boats out there that have it offset. In a single motor mono or cat I would put it line though.
Just more of my 2 cents and this is tth thread so that's all on this, sorry tth
Old Guy

what i was referring to was nothing to do with inline/offset rudders
and on that subject inline strut/rudders on single motor setups have issues

[old guy]

what i was referring to was nothing to do with inline/offset rudders
and on that subject inline strut/rudders on single motor setups have issues

I miss under stoot what you where saying there.

[ozzie-crawl]

no problem buddy
there is a thread on here at the moment about the written word causing confusion
thing is some times two different views or setups can be correct,there is so many variables with boat setups and also what the person wants from there setup.

[tth]

I guess all I can do is try it and get results. If it dosen't work for one who's to say it wouldn't work for me???

[Boatman]

I can not comment on the twin builds you guys are doing with these but with a single drive, well, first run was not good. It spent more time riding its side then on the bottom. A little choppy water surface but I can not see this lasting long on my shelf. Just so narrow. Anyway I spent even more time in the row-boat then driving the RC. This was running 4S2P, ul-1 motor, 642 prop. I may raise the strut to air things out a bit more but even as a saw boat I just dont see it happening. I would say with a Feigao 9XL and 4S2P and a 440 prop this could be a good sport boat but beam should be added if any more is to be expected. It has it's place and function but not for me.

[tth]

Thanks for the input bro.......

Any idea why its ridin' sideways? Torque maybe from the motor?