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(Pleasure Craft) "Jessica" A Sea Scout renovation
Originally built by my Dad in the early sixties, fitted then with a Taycol Target and two very wet lead acid accumulators.
First renovation about 26 years ago for my daughter Jessica, fitted with a 6V Decaperm. Performance was VERY sedate. Perhaps fitting for a Broads Cruiser? The Taycol will now go into the Danish fish cutter I am currently renovating.
First two pics show her condition, incl. engine room, last year after about 25 years in the cellar.
Last three pictures show current condition after extensive renovation, see 'Build Blog Jessica' and refit. Video shows her Sea Trial end of May 2018 https://youtu.be/b0BWJ3duzDw
Now just cockpit fit to do and suitable crew to find. Can't 'select' Speed here as she wasn't equipped with GPS! But quick! Now she planes well so I guess I've turned her into a Sport Fishing Boat!? Rating I also can't select for myself, that's something for you guys to do! ;-) (Motor: Propdrive 2830 1000kV) (ESC: Quicrun 16BL30 Hobbywing) (5/10)
Update: Crew have reported for duty
RNinMunich
6 years ago
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(Naval Ship) HMS Belfast
Performance not yet known, still in the fitting out dock. Power is actually 2 x 6V 4Ah. ESC will be Graupner Navy V30R. Maybe 2 for differential control to support rudder. I've left 'Number of Props' as Please Select cos Belfast has 4 and this ain't an option!!
Long term plans for smoke (borrowed from model railway kit!) lighting and gun control. Have already bought magicians 'Flash Paper' for main battery gun flashes. Ignition using old 'out of work' glow-plugs? Any ideas welcome :-)
Ship is Graupner Premium line. NOT IMPRESSED with quality of cast resin parts, lots of air bubble depressions :-/ Fair amount of rework / repaint necessary! (Motor: Speed 540 x 4) (ESC: Navy VR30 or Viper Marine. Trials on 40MHz then 2.4GHz DX6) (7/10)
RNinMunich
7 years ago
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(Naval Ship) Graf Spee
It's a Graupner premium line ARTR! ;-/ Wanted some 'quick fun' while working on more complex constructions (HMS Hotspur H Class Destroyer 1936, 1:72 and Type IA U26 also 1936).
Didn't work out that way! On first test of motors and ESC I discovered that the shafts were so badly fitted that they were binding ;-( So back in dry dock for some hull surgery! That's why some inputs are missing above. Plan is to gradually add functions and special effects; lighting, gun controls, magicians Flash Paper for gun flashes. Maybe fired using my old glow-plugs!!??
Now I'm freshly retired I have more time for this ;-), as long as Gisela doesn't drag me off around the world too often ;-) I also have HMS Belfast from the same series (approx 1:128) also awaiting fitting out. More soon - don't hold your breath please ;-) in the pipeline is some 'Plastic Magic' with Ark Royal, Hood and Bismark all to 350 scale ca 70-80cm. Sorry been in Munich for over 30 years don't think in inches any more (except when buying mag wheels for the chariot!)
Cheers, and as my German boating friends say 'Immer ein Handbreite Wasser unterm Kiel!) = I wish you always a hand-widths water under your keel.
I sail on the lake in the Ostpark near me in Munich. Very convenient, right next to the Biergarten! (Motor: 600) (ESC: Graupner Navy V30R) (5/10)
RNinMunich
7 years ago
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Gina 2 Billing Boats Fish Cutter - Restoration & Conversion
As promised (or threatened?) stage two of the hull work and thoughts on motorisation. The hull was sprayed with two coats of grey primer/filler. Pic1.
As usual this showed up the remaining imperfections (pics 2 & 3), but I'm not going to worry about them until I've got prop shaft tube and rudder stock sorted out and permanently fitted
After my attempts to make and thread a 3mm prop shaft went awry Martin (Westway the Mechanicals Master) stepped in and made me a decent one complete with a bushed stuffing tube Vielen Dank Meister
I did however manage to make a 4mm to 3mm reducer so that I could fit a Rabeosch 35mm prop as seen in pics 2 & 3.
The tube and shaft from Martin, arrived Saturday an' he only made it on Monday, have been dry fitted so that I can start setting up the gears, necessary to bring the drive down to the prop shaft fitted very low down in the hull, and motor mount. Pic 4.
Motorisation: (Remember folks - this kit was designed and built as a static model!) I want to use the old 1950s Taycol Target motor which my Dad originally fitted in the Sea Scout which I have renovated and upgraded to work forward and reverse with a standard ESC. See Build blog 'Sea Scout - Jessica'
Many of you will know that the Taycol motors were field coil motors, meaning that they have no permanent magnet around the rotor coil, and thus reversing the battery connections to the brushes had no effect on the direction of rotation, as this simply reversed the magnetic fields of both stator and rotor coils
To counteract this so that the motor could be used in both forward and reverse with a conventional brushed ESC I modified the motor slightly (separated the two coils) and built a simple converter board to connect it to the ESC. Again see the Sea Scout blog for the details of the conversion.
Basically; once the field coil and brush-gear (rotor coil) have been separated a simple diode bridge can be used to apply the output of the ESC to the motor. This enables the reversal of EITHER field OR rotor coil polarity, depending on how you connect the converter to the motor. Thus reversing the direction of rotation of the motor. Beneficial side effect is that the diodes also suppress the commutator sparking
In my case, with the Taycol Target, I also cleaned, flattened and polished the commutator. Thus significantly reducing the potential for spark generation in the first place!
A peculiarity of the Taycol motors is that they all use metal brushes, pressed phosphor bronze strip, so they need oiling!
DO NOT oil conventional brushed motors with carbon brushes unless the brushes are exchangeable or you want to have to buy a new motor!!!!!
Pics 5 & 6 show the proposed position of the Taycol in Gina 2 and pic 7 the prototype converter board I knocked up to test the motor, together with a Graupner Navy V30R Marine Brushed ESC. Details and results in the Sea Scout blog, including video of the sparks and oscilloscope pics of the drive waveforms before and after conversion! The latter showing the spark suppression effect of the converter Some samples attached - last 3 pics.
Pic 8 pic shows a more compact version of the converter, one of a few types I'm doing for Martin's various Taycols as a trade for the prop shaft he made for me and some useful material he sent. Thanks mate
Next steps will be
1) mounting the gears correctly on the shafts, requiring the manufacture of a 3/32" to 4mm adaptor and a 1/8" to 4mm adaptor, and keying them to the shafts - Hooray for mini milling machines
2) manufacturing bushed end plates to hold the gears in place,
3) fitting the motor mounting platform. I'll probably borrow from my experiences of real shipbuilding and do this as a suspended 'false floor', i.e. mounted on stiff springs to enable adjustments to optimise the gearing mesh!
On real naval ships this is done to improve shock resistance and to minimise engine noise / vibration conduction to the hull, thus significantly reducing the acoustic signature of the ship.
Not that I'm tooo worried about being torpedoed
Worth a try
Pic 9 shows the cleaned up and renovated Taycol Target motor.
Pic 10 shows the drive waveform complete with sparks before modification.
Pic 11 the cleaned 'forward' waveform with the converter board.
Pic 12 the cleaned 'reverse' waveform, no suppression capacitors needed More soon folks, Cheers, Doug
PS Along the way a new keel was fitted as can be seen in pics 1 to 3.
The original builder had 'buried' the keel in the hull planking!
RNinMunich
6 years ago
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Aerokit Sea Scout 'Jessica' Renovation
Some of you may already know part of the story but, spurred on by Martin 'Westquay' and commanded by Admiral 'Dave' here goes
Dad built her originally when I was about 12, so ca 53-54 years ago. (As at 2017!)
She was 'No name' and free running with a Taycol Target, ahead only, and a 6V (very) wet cell lead acid. (Down to the garage again for a 'top up!)
Anyway, to cut a long story slightly sideways
MY daughter Jessica found the boat in the cellar when she was about 12!
And immediately wanted to run it on the local lake in Munich, as I was doing with my HMS Hotspur (but that's another shaggy model story!).
Sooooooo, she was cleaned up, resprayed pink (!) and white, Taycol Target field motor (no reverse) removed and replaced with a Decaperm 6V 7A with 2.75:1 gearbox. 6V 4000mAH SLA (weight half ton or so) Performance was rather sedate. Well it seemed like a good idea at the time!
RX, battery and rudder servo were shoehorned into the aft compartment, Jessica nameplates stuck on and off we went. Jessie was happy with the boat and I was happy with the Biergarten. Can't remember where 'the management' was
Jessie soon lost interest so I used the boat as a test bed for a while.
So now, 25-26 years on; prompted by Martin, I took the old lady down off the shelf (I TOLD her not climb up there!) and started inspecting the damage. Photos attached. (Yes I know 35Megs is not for boats but I didn't have nowt else then) The ancient DIN Audio socket was for charging the RX bat, double throw switch on starboard quarter. The big 'ole was for the telescopic antenna borrowed from an old radio. Needs must when ...
The funny looking 'thing' hanging out the transom is a dummy exhaust hiding the bolt holding the antenna bracket inside!
Have also started dismantling and renovating the Taycol, which I want to put back in with a reversing circuit and a 2S or maybe 4S LiPo. That was day before yesterday. Yesterday I took out the junk (siren, water pump, servos & micro switches to operate them and the running lights) and wiped the dust off - last two photos, incl. THE JUNK.
Stripped of all the junk & Decaperm she weighs 1214gm (about 2lb 11oz).
Also tested (cautiously!) the Taycol with a regulated / current limiting PSU. She rattled and protested but ran Now being dismantled, cleaned up and brush gear refurbished. Might also fit proper bearings!
Next step: clean up the old gal, check for leaks and load capacity.
I will probably use the 4S LiPo ca 310gm, the SLA was 660gm, so lots of spare capacity, or maybe I can get her nose out of the water for once
More soon Cheers from Munich
PS to Dave and Martin: NO! I don't propose to go full authentic nostalgia with a wet cell accu
RNinMunich
6 years ago
Recent Posts
๐ฌ Re: Chris Craft Cobra
4 hours ago by
๐ฉ๐ช RNinMunich (
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Another candidate for 'Planker of the Month'๐
I can see that you are going to be booking into Hotel Mama quite frequently RR๐ Or may we call you 'Ratty', as from The Wind In The Willows?๐
Cheers, Doug๐
https://danmacgregor.fandom.com/wiki/Rat?wikia-footer-wiki-rec=true |
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๐ HAPPY BIRTHDAY, MANY HAPPY RETURNS :-)
5 hours ago by
๐ฉ๐ช RNinMunich (
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Gather your strength, and get the bottles in Colin!
You're on next๐
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๐ HAPPY BIRTHDAY, MANY HAPPY RETURNS :-)
7 hours ago by
๐ฉ๐ช RNinMunich (
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Happy Birthday Bill (Scratchbuilder)๐๐๐๐๐๐๐
Welcome to our Septuagenarian Club๐
Hope your health is still improving and wish you an early return to the workshop and pond-side๐ค
All the best, Doug๐
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๐ Question of the Day?
12 hours ago by
๐ฉ๐ช RNinMunich (
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OK Simple Sailor,
Here you go!
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๐ Question of the Day?
1 day ago by
๐ฉ๐ช RNinMunich (
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Hmm!
'Correct' answers have risen to 22% (02:10 CET).
Either they've been following this debate (?) or they remember the discussion which ensued the last time this question appeared!
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๐ Question of the Day?
1 day ago by
๐ฉ๐ช RNinMunich (
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Quod erat demonstrandum Roy๐
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๐ Question of the Day?
1 day ago by
๐ฉ๐ช RNinMunich (
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Roy,
I say again-
" It is said to have been uttered (FLW) by Archimedes"
Famous Last Words before he lost his head!
โน๏ธ๐
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๐ฌ Re: Deck
1 day ago by
๐ฉ๐ช RNinMunich (
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Trident,
You have been added to the list of nominees for 'Planker of the Month'๐
๐
PS: Don't know what a 'sharpie' is, but if it's a permanent marker it should not react with your varnish. UNLESS! They use the same solvent.
To be absolutely sure you could seal the deck with a resin, e.g. Deluxe Materials Ezekote.
A water based one part resin, NO hardener needed.๐ I use it diluted with 10 to 20% water as a sealant. Let dry overnight and you'll have no problems with your varnish, whatever it's basis / solvent is.๐
Cheers, Doug๐
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๐ Question of the Day?
1 day ago by
๐ฉ๐ช RNinMunich (
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Roy,
"Nลlฤซ turbฤre circulลs meลs!" is a Latin phrase, meaning "Do not disturb my circles!". It is said to have been uttered (FLW) by Archimedesโin reference to a geometric figure he had outlined on the sandโwhen he was confronted by a Roman soldier during the Siege of Syracuse prior to being killed. Archimedes was summarily executed by a soldier after refusing to turn away from his math problem.
๐
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๐ Question of the Day?
1 day ago by
๐ฉ๐ช RNinMunich (
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Save Our Sausages!
Another AI screw up today!๐
What is then meant by 'boating terminology'??
" "SOS" does not actually stand for anything in boating terminology".
B.S. IMHO!๐ Seems most folk agree! 75%.
I believe we had this question before , with the same nonsense answer!
๐
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๐ Question of the Day?
1 day ago by
๐ฉ๐ช RNinMunich (
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Yep Nick,
He was a clever chap, but he got 'screwed' by a Roman soldier in the endโน๏ธ at Syracuse Sicily, not upstate New York! FLW: "Noli turbare circulos meos".
"Eureka!" he cried, running naked down the street.
Came the laconic reply from a bystander-
"You don't smell so good either. Get back in your bath!"
OK OK I was just leaving. ๐ Where's my coat?
๐๐
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๐ฌ Re: Construction report whaler Rau IX 1 : 45
1 day ago by
๐ฉ๐ช RNinMunich (
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Very nice job Wolle๐
Freue mich auf den Jungfernfahrt Video๐
I dimly recall seeing Rau when I visited Das Deutsche Schifffahrtsmuseum many years ago.
Didn't go aboard though, coz I spent most of the day inspecting the ship models and then crawling around the Type XXI UBoat U2540 Wilhelm Bauer.
Phot 1: U2540 with Seefalke and Rau in the background.
Photo of U2540 at sea is from 1970!
Photo 3 is from 1963 at Marinestรผtzpunkt Eckernfรถrde.
Photo 4 you will recognise I think๐
Cheers, Doug๐
Viele Grรผรe aus Mรผnchen.
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๐ For a 'bit of a laff' :-)
1 day ago by
๐ฉ๐ช RNinMunich (
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A Guy comes home completely drunk one night
He lurches through the door and is met by his scowling wife, who is most definitely not happy.
โWhere the hell have you been all night?โ she demands.
โAt this fantastic new bar,โ he says
โThe Golden Saloon
Everything there is golden
It's got huge golden doors, a golden floor, the works โ hell, even the urinal's gold!'
The wife still doesn't believe his story, and the next day checks the phone book, finding a place across town called the Golden Saloon
She calls up the place to check her husband's story.
โIs this the Golden Saloon?โ she asks when the bartender answers the phone.
โYes it is,โ bartender answers.
โDo you have huge golden doors?โ
โSure do.โ
โDo you have golden floors?โ
โMost certainly do.โ
โWhat about golden urinals?โ
There's a long pause, then the woman hears the bartender yelling,
โHey, Johnny, I think I got a lead on the guy that peed in your saxophone last night!โ
๐๐
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๐ Question of the Day?
3 days ago by
๐ฉ๐ช RNinMunich (
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Roy,
AI: Almighty Ignorance๐ค
๐๐
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๐ New Zealand Trip
3 days ago by
๐ฉ๐ช RNinMunich (
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Dave, Re "I'll pass on the "oysters"".
VERY wise!!๐ฎ
"Mountain Oyster
most likely originated in Australia or new Zealand, due to one of the main livestock being a sheep.
A sheep's testicles
You can't eat mountain oysters...unless you're into that.
by ikayama October 10, 2004"
"Rocky Mountain Oysters
Bull nuts. Idiots eat them.
"Hey Joe, lets make us some tasty Rocky Mountain Oysters.
Aren't they bull nuts, Fred?
Yes..."
by Anonymous May 2, 2003"
Bon appetit!๐
๐
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๐ Lipo vs Li-ion
6 days ago by
๐ฉ๐ช RNinMunich (
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Hi Andi,
Re "who remembers the Wombles ?๐ "
I do; The Wombles of Wimbledon Common, BBC in the early seventies.
Motto; 'Make Good use of Bad rubbish'.
But I don't recall them having to wear gloves, a mask AND strip to recycle in the nude!๐ฎ๐
๐๐
Happy and safe recycling
Doug๐
PS Hadn't heard of KOKAM so I looked 'em up๐ค
They are still around.
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๐ฌ Re: Planking started
6 days ago by
๐ฉ๐ช RNinMunich (
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Only when qualified as Full Members Ross.
(By special arrangement with the Site Shop๐. TBA.)
Thus far we have as Full Plankers:-
Graham93, Robbob, Mturpin, Dave 976 and JBkiwi.
Further nominees will be gratefully received and considered.
Nominations please to FLEET. Care of RNinMunich, MBNavy Bavarian HQ, Isar Flotilla, Munich.
Both hull and deck Plankers will be considered.
FLEET, ๐
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๐ฌ Re: Planking started
6 days ago by
๐ฉ๐ช RNinMunich (
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Good start Duncan๐
As a 'Novice Planker' I'm following with interest.
Can't wait to see the second layer. Will it be diagonal?
What wood will be used?
Cheers, Doug๐
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๐ Question of the Day?
7 days ago by
๐ฉ๐ช RNinMunich (
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Very probably Isaac,๐ค
In modern terms; at sea, a league is three nmi (3.452 mi; 5.556 km).
So 20,000 leagues would be
60,000 Nautical Miles,
69,040 Statute Miles,
111,120 km.
Getting on for 3 laps around the world Ross. Circumference of Earth at Equator = 40,075 km.
I believe that many ships and subs have covered such distances during the course of their commercial/operational lives. Even Nemo didn't stay submerged the whole time๐
A nuke sub might manage it, at least until they run out of Hershey bars๐๐๐ฎ
Cheers, Doug๐
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๐ฌ Re: More Planking
8 days ago by
๐ฉ๐ช RNinMunich (
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Thank you Sub.
Just remember; "I'm Number One round here, and don't you forget it!"
'Grub's up ...'
"Oh good oh! SNORKERS!"๐
๐๐
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๐ Question of the Day?
8 days ago by
๐ฉ๐ช RNinMunich (
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Another repeat today!
So anyone who screwed up last time gets another chance๐
๐
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๐ Convention for displaying a model Boat
8 days ago by
๐ฉ๐ช RNinMunich (
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Hi Jump,
Just about to test your theory on a re-run of the French Connection on WBFilm channel.
Don't expect that the baddies and goodies in Brooklyn will be wearing black and white Stetsons though๐
๐
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๐ Convention for displaying a model Boat
8 days ago by
๐ฉ๐ช RNinMunich (
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Nice layout Colin๐and familiar๐
I suspect that Caroline had something to do with the quayside diorama๐๐
Cheers, Doug๐
PS: "in the UK people tend to walk round the marquees in a clockwise direction"
Thinks! Does this suggest that our antipodean brethren go round anticlockwise?
Coriolis effect๐
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๐ Question of the Day?
9 days ago by
๐ฉ๐ช RNinMunich (
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"Alas! Poor Boris. We knew him Horatio."๐
If I keep getting these feed lines for WS (mis)quotes poor Willy will either be doing 1000rpm in his grave or laughing his britches off!
๐
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๐ฌ Re: More Planking
9 days ago by
๐ฉ๐ช RNinMunich (
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"Give me excess of it, that, surfeiting, the hull may may be strong, and so float."
Twelfth Night, Act 1 Scene 1. Well๐ sort of๐
Apologies to Willy and Count Orsino.
๐
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๐ฌ Re: More Planking
9 days ago by
๐ฉ๐ช RNinMunich (
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Yes Ross I guess I am, in a highly complimentary sense of course.
BTW: If you feel you can match Graham's skill and magic with wood you may consider yourself a member of the newly founded (just dreamed it up๐๐) MB Website Honourable Guild of Worthy Plankers.๐
Presentation of the annual award of 'Planker of the Year' shall henceforth be made on the 30th February. So Carry On Planking folks.๐
๐
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๐ Question of the Day?
9 days ago by
๐ฉ๐ช RNinMunich (
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More deja vu feeling today!๐ค
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๐ Question of the Day?
9 days ago by
๐ฉ๐ช RNinMunich (
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Hi Boatshed,
Thinks! Can an Artificial Intelligence be insulted?๐
๐
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๐ฌ Re: More Planking
9 days ago by
๐ฉ๐ช RNinMunich (
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Exquisite work Graham๐๐๐
To paraphrase 'Only Fools and Horses' ...
What a planker! ๐ฎ
Cheers, Doug๐
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๐ Question of the Day?
10 days ago by
๐ฉ๐ช RNinMunich (
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Tell me about it Jump๐
๐
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