RC Brixham trawler

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22 November 2013 at 19:54 #45207
Georg Fleetwood
Participant
@georgfleetwood21053
It is a challenge to build sailing models true to scale and get them to sail without false keels or very much enlarged rudder blades. I will try to give a short description how I built my Brixham Trawler "Dalwhinnie".

I live in Sweden, so writing in english is not that good…

The most important thing is to not build too small – hull length over 70 cm is best. The bigger the better performance. Everything over waterline should be built as light as possible.

My trawler is in scale 1:28, hull length 82 cm. Total weight 5,5 – 6 kg.

A bar of lead is built in the keel. When the hull is finished, I paint the hull with the waterline. Then I do consecutive tests in water, completing with pieces of lead, spread all over the hull. The goal is to get the boat floating at the waterline when the deck, rigg and all details are in place.

Before beginning with the deck, all planning and installing the servos for the sheets and all deck openings must be done. The servo-arms must have space enough too move freely. By installing the servos at different highs it is possible to fix it. But it is not an easy task!!

The second thing is to make out the way for the sheets from the servo-arm up trough the deck to the sails. I use loops made of brass to let the sheets go the right way, so they not get stuck anywhere. When all that looks good, it is time to start planking the deck . Pic 6L shows the sheets (marked blue) coming up through the finished deck. Note there are two sheet for the jibs, they are connected to the same servo-arm.

Georg

Edited By Georg Fleetwood on 22/11/2013 20:01:28
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22 November 2013 at 19:54 #6913
Georg Fleetwood
Participant
@georgfleetwood21053
Some tips concerning building a sailing ship.
22 November 2013 at 21:10 #45210
LARRY WHETTON
Participant
@larrywhetton68737
Thank you Georg,

What plan did you use ..?…….Larry………..
22 November 2013 at 21:13 #45211
Georg Fleetwood
Participant
@georgfleetwood21053
The missing photos…

Georg
22 November 2013 at 21:17 #45212
Georg Fleetwood
Participant
@georgfleetwood21053
Harold Underhills plans for the "Valerian" . I scanned the plans to my pc and scaled up 115% in Photoshop.

Georg
23 November 2013 at 13:28 #45215
Ian Gardner
Participant
@iangardner62867
This is excellent Georg and very interesting- thanks so much for sharing with us- and your English is excellent! Note that the advert on this page for Brown ,Son and Ferguson Ltd has, what we in this country call 'a greengrocer's apostrophe' on catalogues so no-one is infallible!!!

More details of your great models would be much appreciated- they shouldn't go un-noticed.

Ian

Edited By Ian Gardner on 23/11/2013 13:29:27
24 November 2013 at 14:24 #45223
Georg Fleetwood
Participant
@georgfleetwood21053
Making a windlass.

The pictures also show the fastening of the sheets. The white ropes are shown clearly. The sheets of the two jibs goes together down to the same servo under deck. The jibs have to be stiffed in the lower part. Otherwise they will lose the straight shape and be "curled" . From the beginning the sheets have to be far too long, there must be a marginal to able to adjust the final length of the sheets. End point adjust with the radio. A computer radio is best during this moment, but it will work with older equipment too.

I will try to answer any question about the sheet adjustment.

Georg
24 November 2013 at 14:30 #45224
Georg Fleetwood
Participant
@georgfleetwood21053
Ian!

The whiskey Glenmorangie is my first choice too, but try Dalwhinnie, fine brand too!

Georg
24 November 2013 at 14:31 #45225
LARRY WHETTON
Participant
@larrywhetton68737
Nice work Georg,

recieved mail ok , sent a reply hope you recieve it ok computer having a headache

cheers Larry…..
24 November 2013 at 16:22 #45226
Georg Fleetwood
Participant
@georgfleetwood21053
Larry!

You need computers to solve problems you get when you buy computers

Georg
24 November 2013 at 16:59 #45228
Ian Gardner
Participant
@iangardner62867
Very nice work Georg and… inspiring! I have an empty Dalwhinnie bottle that I bought for a ship in bottle project- perhaps I should try a full one!

Are the foresails stiffened with piano wire and how do you attach it? I like the fact it means you can attach the sheet anywhere along the foot to suit your winch arrangements. I like your colour schemes too.

Ian
24 November 2013 at 17:33 #45229
Georg Fleetwood
Participant
@georgfleetwood21053
I use Greenwood styrene rods, in this case dia 2 mm. Attach with thread and CA glue. They are lightweight and white, can´t be seen at a distance. For bigger sails you need thicker rods.

But it is good to have a small dia to get a small curve when the wind fill the sail. Actually I had to switch from 1 mm to 2 mm after the first sailing test. The former were too weak. Yes, it makes things easier if you can attach the sheet were you want too.

Dalwhinnie is worth a try

Georg
24 November 2013 at 19:31 #45231
LARRY WHETTON
Participant
@larrywhetton68737
Hi there ,

real ale is my grog, and a drop of Hennesey , Georg having a bit of problem converting eml file you sent .

cheers Larry….
24 November 2013 at 20:27 #45232
Georg Fleetwood
Participant
@georgfleetwood21053
Ok Larry, ale and Hennesey – I see you have problems converting….No sorry! Just a bad joke

What does "elm" file means – is it the picture file?

Regards,

Georg
24 November 2013 at 20:30 #45233
Georg Fleetwood
Participant
@georgfleetwood21053
Hi again Larry!

I got it – it means E-mail file? I have sent more E-mails to other people today and they have worked out good…

Georg
25 November 2013 at 08:58 #45241
Ian Gardner
Participant
@iangardner62867
Georg,

Thanks for the info regarding styrene strip for foresails- good idea.

Ian
27 November 2013 at 20:15 #45272
LARRY WHETTON
Participant
@larrywhetton68737
Hello Georg,..

Just viewed vid, on the memory stick you sent me with, plans , quality build and filming,

a credit to you nice to see some thing that is a proper build for a change ,

i forgot to tell you i was on the decks of the BRIXHAM TRAWLERS this summer,

and a tour below decks , only a 2hr drive from BRISTOL,

I have some pictures which i have yet to scan , taken on film camera was not packed ,

so had to use disposable ones…….

Again may thank you for plan ………your friend Larry…..
28 November 2013 at 20:56 #45300
Georg Fleetwood
Participant
@georgfleetwood21053
Most RC transmitters with 4 or more channels are made for flying RC planes. 3 of the 4 channels are connected with sticks with springs. The spring will take the stick back to neutral position the moment you let go the stick. That is not so good when using them for the sheets for a sailing boat. It is rather simple to open the transmitter and study how the sticks mecanics works and take away 2 of them, saving one spring for the rudder function. After that is it possible to leave the stick in the precise position you want to get the sail in the right angle.

A Brixham Trawler has a long keel, it means that turning takes a long time if you just use a scale rudder blade, therefore it is necessary to have the possibility to steer with the sails. Which means more than one servo for the sails. The schooner on the second pic has a much shorter keel and turn better than the trawler, but still needs steering with the sails specially in light winds.

Georg
2 December 2013 at 20:09 #45352
LARRY WHETTON
Participant
@larrywhetton68737
Good evening Georg,

just a couple of pictures , of the deck of BRIXHAM TRAWLER..

All i have at the moment,………camera was left at home so taken on disposable cheap one ….

cheers Larry
3 December 2013 at 20:27 #45377
Georg Fleetwood
Participant
@georgfleetwood21053
Larry!

The best help you can get when building a model is to visit the real thing. Lucky you!

Georg
4 December 2013 at 16:27 #45386
LARRY WHETTON
Participant
@larrywhetton68737
Hi all,

Timber ready in store, be laying down keel on building slipway,

will kick off in the new year, pictures to follow….cheers Larry…
4 December 2013 at 20:08 #45389
Georg Fleetwood
Participant
@georgfleetwood21053
So very nice!

Georg
16 December 2013 at 21:11 #45650
LARRY WHETTON
Participant
@larrywhetton68737
Hello Georg,

Hope you are well.?. did you get my message .?.

Making a start on Brixham Trawler printed out bulkheads and stuck to 6mm ply ready for band saw treatment there is a lot of granddad dutys this time of the year …..so will get stuck in next year,. will be at

Brixham over the christmas holiday do have a good holiday cheers Larry..
16 December 2013 at 21:36 #45651
Georg Fleetwood
Participant
@georgfleetwood21053
Looks fine Larry!

Looking forward to see the progress of this project!

There is a possibility you will be able to sail your own Brixham Trawler in Brixham next year?!

Sail on,

Georg
17 December 2013 at 09:49 #45654
LARRY WHETTON
Participant
@larrywhetton68737
Good Morning Georg,

Thank you , are you getting my emails , and did the over land get to you .?..

will lift a glass or two you on Christmas eve to you and all sailors cheers Larry..
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