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Author Topic: X rudder mixing  (Read 8122 times)

polobeer

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X rudder mixing
« on: May 10, 2009, 11:22:41 am »
Dear all,

Could someone explain how I can operate an X rudder (like that found on the 212A sub) via mixing (coupling) on my transmitter? Can a standard 4 channel transmitter perform this function? Any advice would be most helpful.

Cheers
Simon  %)
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Mankster

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Re: X rudder mixing
« Reply #1 on: May 10, 2009, 11:43:48 am »
Yes you can use 2 programable mix's on your radio to do the job if you have a computerised radio. If you dont,or dont have a PhD in transmitter programing, to save major hair pulling it would be wise to invest in an external mixer like the one sold by  Subtech  http://www.subtech.uk.com/acatalog/SubTech_Range_of_Electronics.html The advantage of this over an internal TX mix is you are able to fit a pitch controller if you want to. Or you could build the 214 which has conventional planes.
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polobeer

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Re: X rudder mixing
« Reply #2 on: May 10, 2009, 12:50:04 pm »
Many thanks yet again Mankster! I had a look at the Subtech site and the mixer; it looks ideal but would probably be too big for the likes of the Revell 212A.

Cheers
Simon  :-))
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polobeer

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Re: X rudder mixing
« Reply #3 on: May 10, 2009, 01:16:46 pm »
Hello again Mankster,

I am toying with the idea of buying the Ark Model 212A sub kit at some stage in the future which looks very nice indeed (on top of my small scale static conversion of the Ohio) and this is why I asked about the X rudder mixing. However, the Ark Model 212 uses a water pump ballast system which needs a 12v 50amp reverse switch and I can't track one of these down anywhere. Do you know where I could find one?

Apart from the Ark Model version of the 212 it would be nice to try and convert the Revell version of the 212 as a dynamic diver. Do you think that the same RC components that you suggested for the 1/350 Ohio would suit this model, together with the X rudder mixer from Subtech?

All the best
Simon  %)
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das boot

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Re: X rudder mixing
« Reply #4 on: May 10, 2009, 02:02:47 pm »
X-tails will drive you to the point of insanity....my Steve Neill 212 has nearly been out of the window twice! It now sits on my tv in disgrace....whilst I recover!

Good luck with your venture...and I mean that from the heart of my bottom.     %)


Rich
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andyn

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Re: X rudder mixing
« Reply #5 on: May 10, 2009, 02:12:21 pm »
I'll have it set up in about 2 seconds... Provided of course you are using a Tx I'm familiar with...

What you need is this, plus a pair of Y leads

http://www.ripmax.com/item.asp?itemid=P-VMIX3&ItemsPerPage=100&selectedtab=060&Category=060-140

Operates the same way as a Zagi flying wing.
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polobeer

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Re: X rudder mixing
« Reply #6 on: May 10, 2009, 02:37:06 pm »
Cheers fellas!

Your info and observations have been noted! Ummmm sounds as though the X rudder could be... a swear word sounding like rudder beginning with a "B".

All the best
Simon  %%
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andyn

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Re: X rudder mixing
« Reply #7 on: May 10, 2009, 02:42:33 pm »
It need not be a problem, are you running 4 servo's on it? If so, you need one V-Tail mixer with two Y leads.
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polobeer

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Re: X rudder mixing
« Reply #8 on: May 10, 2009, 02:59:42 pm »
Hello Andyn,

I think the Ark Model uses two servos for the rudders...

Cheers
Simon  %)
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andyn

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Re: X rudder mixing
« Reply #9 on: May 10, 2009, 03:04:00 pm »
Fair enough, I think you would need a dedicated sub system then, can't think how two servos would work...
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Mankster

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Re: X rudder mixing
« Reply #10 on: May 10, 2009, 03:18:17 pm »
Quote from: polobeer on May 10, 2009, 02:59:42 pm
Hello Andyn,

I think the Ark Model uses two servos for the rudders...

Cheers
Simon  %)

The Ark Model one is plenty big enough to use the Subtech mixer and anything else you'd like to fit in.
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Myles

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Re: X rudder mixing
« Reply #11 on: May 10, 2009, 04:24:19 pm »
Quote from: polobeer on May 10, 2009, 11:22:41 am
Dear all,

Could someone explain how I can operate an X rudder (like that found on the 212A sub) via mixing (coupling) on my transmitter? Can a standard 4 channel transmitter perform this function? Any advice would be most helpful.

Cheers
Simon  %)

You mite want to contact Skip Asay how was instrumental in developing the X tail operations for Rc Submarines.
You can contact Skip at the Subcommittee Web Site by just posting in the general section.
http://www.SubCommittee.com

Good Luck
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polobeer

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Re: X rudder mixing
« Reply #12 on: May 10, 2009, 04:49:38 pm »
Cheers again fellas!

All the best
Simon  :-))
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GG

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Re: X rudder mixing
« Reply #13 on: May 10, 2009, 07:45:31 pm »
Never actually built a model sub with "X" configuration stern planes but using "ELEVON" transmitter mixing with two servos (diametrically opposed planes being linked to one servo) ought to give the right movements.
GlynnG
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polobeer

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Re: X rudder mixing
« Reply #14 on: May 10, 2009, 08:43:26 pm »
Cheers GlynnG,

Many thanks for the info - I never realised that such a "mundane" subject would create so much interest!

All the best
Simon  %%
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Ghost in the shell

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Re: X rudder mixing
« Reply #15 on: May 10, 2009, 08:54:23 pm »
basically as I see it you have two V-tails, so by Y-leading the 4 servos that control it, you could then treat it as a conventional V-tail.

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Subculture

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Re: X rudder mixing
« Reply #16 on: May 12, 2009, 12:21:30 pm »
X-sterns give good control. If you use electronic mixing, there's nothing more to them than a conventional cruciform tail.

One thing to be mindful of, is that v-tail/x-tail mixers can be incompatible with some levellers. Norbert Brueggen does a nice little leveller with a built in x-tail mixer, and it's small enough to fit in a 1/144th U212, just.

You have to use an onboard mixer with a leveller.
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