Topic: Kitchen rudder (Read 7835 times)

steam up · « **on:** October 31, 2013, 06:19:43 pm »

I am left with three possible solutions:
Build a gear box I have the plans (big thanks to Malcom Beak) sources of gears would be a help.
Build a variable pitch prop
Build a Kitchen rudder
From the title you will notice that at the moment I am moving towards thr KR.
I have found the following link http://forum.woodenboat.com/showthread.php?156290-Kitchen-rudder-model-boat.
Any more information would be great.

If this is in the wrong area please feel free to move

frazer heslop · « **Reply #1 on:** October 31, 2013, 07:21:13 pm »

Just to play devils advocate

Why not modify the engine to piston valve.
cheers

nemesis · « **Reply #2 on:** October 31, 2013, 07:54:45 pm »

Hi, The kitchen rudder was developed because the engine of the day could not reverse, just like the Stuart 10. The port of Tyne had one on one of the workboats. They work quite well and it is worth going down this road. Engine at constant speed, just close the cups and go slower, close them altogether and go astern, good luck Nemesis

Skimmer Fan · « **Reply #3 on:** October 31, 2013, 08:09:24 pm »

Maybe these will help.

Mad_Mike · « **Reply #4 on:** October 31, 2013, 09:35:23 pm »

nice rudder that.
heres an alternative that ive comes across while scouting the web in the past. The HPI Savage reverse module:
http://www.ebay.co.uk/itm/HPI-Racing-SAVAGE-X-4-6-GT-3-GREY-87032-REVERSE-MODULE-SAVAGE-GENUINE-PART/380756965976?rt=nc&_trksid=p2047675.m1851&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D18217%26meid%3D2379835737645370765%26pid%3D100005%26prg%3D8342%26rk%3D3%26rkt%3D5%26sd%3D261290149811%26
just add a servo and your off. Youl need self starting engine though mind

frazer heslop · « **Reply #5 on:** October 31, 2013, 11:34:18 pm »

Hi, will you please post on you're build of the rudder as Im either going to build this engine with piston valves or make a self starting single as per the Typhoon engine.
I have made a variable pitch prop in the past but never got on with it.The design was in Model Boats around the mid 1980s.

Jack Kitchen developed the rudder using the steam launch Bat as the test bed and she has a Sissons compound fitted with Stephenson valve gear as can the Stuart Turner 10.
One failing of the rudder on full size boats is the extra loading on the keel and transom knee not that will worry us.
kind regards
frazer

Skimmer Fan · « **Reply #6 on:** November 01, 2013, 02:26:14 pm »

Frazer are these photo;s what you require.

frazer heslop · « **Reply #7 on:** November 01, 2013, 03:47:52 pm »

Many thanks, I will file them for future use

Just don't know what I'm building next boat wise but will post it up on here.
best wishes
frazer

dave301bounty · « **Reply #8 on:** November 01, 2013, 07:51:21 pm »

If my memory serves me right ,weren't the old liberty boats in the R N fitted with kitchen rudders ,they were very manouverable ,and with the engine going the same speed and one way ,the rudders just threw the boat exactly were was wanted .they just wound up the rudder /unwound it .great idea .

derekwarner · « **Reply #9 on:** November 01, 2013, 07:55:23 pm »

mmmmmmmmmmm certain RN Admirals boats come to mind as having Kitchen rudders........Derek

dave301bounty · « **Reply #10 on:** November 01, 2013, 07:59:25 pm »

this was many years ago ,and there were no admirals by me I was going ashore in devonport

steam up · « **Reply #11 on:** November 02, 2013, 10:37:10 am »

Malcolm Beak's work

steamboatmodel · « **Reply #12 on:** November 04, 2013, 02:28:41 pm »

Do you have any shots of Malcolm Beak's unit installed in a boat showing the servo hock up?
Regards,
Gerald.

Circlip · « **Reply #13 on:** November 04, 2013, 03:50:25 pm »

Ball connection on top opens/closes cups and ball you can just see on LHS behind clamp is for rudder function. Cup operation linkage is a bit unclear.

Regards Ian.

malcolmbeak · « **Reply #14 on:** November 04, 2013, 08:10:56 pm »

Maybe a side view will show how things work rather better. In the installation shot, the steering arm is on the opposite side to the side view and the ball connection is no longer used. Note that the steering arm passes under the other working parts - in the photo it almost looks like an extension of cup arm.
Malcolm

steamboatmodel · « **Reply #15 on:** November 04, 2013, 10:30:26 pm »

Thanks Malcolm,
After a second look and another coffee it sinks in. The steering arms are connected to the bottom of the rod moved by the ball connecter moved by the servo arm.
Regards,
Gerald.

xrad · « **Reply #16 on:** November 30, 2013, 06:12:37 pm »

In the above design, centering the 'ball' mount is necessary for symmetrical uniform closing of the rudder 'wings' while swinging the rudder post through its arc. The original idea at start of this thread which mounts the 'rudder 'wing' servo to the post in some fashion allows more freedom of design in the 'wing' closing -opening mechansim.

Skimmer Fan · « **Reply #17 on:** November 30, 2013, 07:20:11 pm »

Exrad
In the photo of the servo on its bracket the screw secures the bracket to the post and the small hole on the right connects to a stearing servo not shown..

nick_75au · « **Reply #18 on:** December 01, 2013, 03:37:50 am »

two servos and a vtail mixer

http://www.rcgroups.com/forums/showthread.php?t=1188866

steam up · « **Reply #19 on:** January 28, 2014, 12:49:56 am »

Just finished:
http://www.youtube.com/edit?o=U&feature=vm&video_id=wFz_snfmJ48

steamboatmodel · « **Reply #20 on:** January 28, 2014, 02:01:00 am »

I could not get it with your link, but found it on U tube. Very well done.
Regards,
Gerald.

Skimmer Fan · « **Reply #21 on:** January 28, 2014, 07:24:46 am »

Beautifully made

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Author Topic: Kitchen rudder (Read 7835 times)