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>> Home > Members > CB90
9th Mar 2018
Last Online
17th Mar 2018

Member Stats
Member No. 4861
Registered 9th Mar 2018
Last Online 17th Mar 2018
City Cumbria CA17 4EG
Country United Kingdom
Boats in Harbour 3
Sailing Locations 1
Forum Posts 3
Photos Posted 107
Likes Received 28
Likes Given 2
15 Total Posts
Sailing Locations
Darlington and District
Since: 10th Mar 2018
PT 109
Type: Naval Ship
Perkasa Class
Type: Naval Ship
Type: Naval Ship
Ranks Points
Fleet Admiral 1000
Admiral 800
Captain 600
Commander 400
Lieutenant 200
Sub-Lieutenant 100
Chief Petty Officer 50
Petty Officer 25
Seaman 10
Apprentice 2
Recruit 0
174 points away from Commander!
Activity Worth Awarded
Boats in Harbour 8 24
Forum Thread 5 5
Forum Post 2 6
Event 8 0
Photo Gallery 10 50
Photos Response 3 0
Video Post 15 0
Video Response 3 0
Build Blog 20 60
Blog Post 5 15
Blog Response 3 0
Sailor 8 8
Guestbook Post 8 0
Liked Posts 1 2
Received Likes 2 56
226 Total Points
United Kingdom
Recent Posts
Thanks for a warm welcome by CB90 Lieutenant   Posted: 6 days ago
I Have just joined the Darlington & District Model Boat Club on Wednesday 14th March 2018. What a great bunch of lads. The club house is on the sites of a Victorian former reservoir which is about 88m x 85 m and about 2m deep. The water is accessible all the way round and has launching area on one side. The club house is a brick building with a meeting room, toilet, storage area and a building/repair area. Sailing/meetings are on: Wednesdays 9.00am -16.00 Sunday 8.00am - mid day. Membership fee is £50 Per year adult and £5 for a junior. This includes Third party public liability insurance very important and often overlooked. Location The Waterpark, Middleton St George, Darlington, Co. Durham DL2 1JG

1960S Taycol electric motor by CB90 Lieutenant   Posted: 9 days ago
Could try general suppression capacitors arrangement, I have also seen the can or frame of a motor connected to earth via a wire soldered to the brass propshaft. You could shield the motor by enclosing it in a metal box, be careful not to short circuit anything, similar to Faraday cage .

Command Boat 90 by CB90 Lieutenant   Posted: 9 days ago
Scratch built at 12th scale from pictures and profiles of the internet. The boat was originally built in Sweden a class of fast military assault craft originally developed for the Swedish Navy by Dockstavarvet Speed: 40 knots (74 km/h) Draught: 0.8 m (2 ft 7 in) Length: 15.9 m (52 ft) Overall; 14.9 (48') Complement: 3 (two officers and one engineer); Up to 21 amphibious troops with full equipment Armament: 3 × Browning M2HB machine guns; 1 × Mk 19 grenade launcher; 4 naval mines or 6 depth charges . The Model I was attracted to this boat due to its great performance and maneuverability, this was mainly due to the use of twin water jets as the main propulsion, this is a trade off with efficiency. So my start point was to collect as much information as possible about the boat this involved collecting pictures and profiles of the craft from various sources. Eventually I found some plans of sort :- My Dad was a boat builder in the days of wooden yachts, and had showed me how to make plans and frames from a line drawing. I went about this first by creating a prototype about 24 in long out of light ply. I then created full size plans of the model to be made. Pictures of small prototype finally painted plain green. The Main model Used my computer to print out the frames onto paper, cut them out and used them as templates for the ply ribs. The construction was simple chine style, with 1.5 mm ply. I tried to build jet drives but failed to produce a effective unit. So reverted to propshafts which worked out well with better control and the bot can spin on it own axis by putting one engine in reverse the other in forward and adjusting the twin rudders. That it for now, hope it was of some interest

Zoom 1 (Interceptor) by CB90 Lieutenant   Posted: 10 days ago
Zoom 1 (Interceptor) Mono boat. Built from a Glassfibre hull, brought on Ebay for £35 the hull is a slim mono racing type with a self-righting side cabin it runs a 1400W 14V 2958 4200KV Brushless Motor and 29-S Water Cooling Jacket with additional air cooling fan. I did not want to use a flexi drive as high maintenance and prone to failure so the shaft runs via two universal joint one at each end. the propeller is a 38mm copper alloy The ESC is a 200W and water cooled the twin rudders supply separate water one for the motor and one for the ESC. The rudder are positioned to reduce prop-walk and are hinged to prevent damage if hit a object in the water and ride adjustment. Turn fins and trim tabs for ride adjustment were provided by a spares kit for another boat. also foamed and added an inner sealed hatch, a rubber bump strip and safety loop.

Vintage Aero Kit Crash Tender by CB90 Lieutenant   Posted: 10 days ago
Brought this vintage Aero Kits RAF Crash Tender for £50 from Newcastle area, it is the 34in version. To my surprise at home I found that it had a Bullet 30 motor installed these motors were the top drawer motor of early fast electrics and its the only one I've ever seen, it can run on 24v and pull around 15A giving 300w not bad for a brushed motor. due to the power of this motor I have modified the hull under the water line with turn fins and trim tabs to reduce torque roll and improve turning stability, the underside is incorrect already as it only has one propshaft, where the original had two and I believe that both props turned in the same direction. The Pictures here show some of the work in progress I have remounted the motor and added a speed controller rated at 24v I have remade the stern compartment and rudder gear under it. I have blocked windows and foamed the front half of the boat. made missing parts and repaired delaminating ply. Note old ply is not as good as modern, the glue is not as water resistant. Have painted the hull and have just ordered the decals from Cornwall model Boats :- The 34in is 1/16 scale Fitting can be brought but many are cast white metal and can add weight to the boat, I have made two water cannons and plan to buy plastic fittings from this site. This has turned out to be a task that is difficult to assess how much effort and money to spend on a hull that has been built by someone else (say no more). Have just finished the steps for the stern compartment.

PT 109 by CB90 Lieutenant   Posted: 10 days ago
[Score: 7/10] 40"/3000g PT 109 Capable of 9mph and a runtime of 30mins Twin Propellors (3 Blade 35mm) Direct Drive to a Graupner 600s (3 Blade) Powered by NiCad (7.2v) 4Amp/h Batteries Controlled Through 2x Aquapower (30Amps) ESC - Comments: PT 109 The famous ww2 PT boat skippered by JF Kennedy (later to be President of the USA) This has be one of my have to have model boats and it was by luck that I found one for sale on a model boat club's web site in 2013, £100.00 later and a journey from Cumbria to Yorkshire and back, I had myself a ProBoat PT 109 This was a ready made RTR model when new and is 40in (1m) long, the boat needed some small repairs but after a test run I found that the running gear was noisy and on investigation discovered that both propshaft were bent and had no bearings from new, the couplings were just direct connections. So with great care I replaced both prop-shafts, propellers, coupling for two double Huco's (universal) and the single ESC by two new Aqua speed controllers and both motors with Graupner speed 600's Note I also foamed the front compartments to make it unsinkable in theroy.

PT 109 by CB90 Lieutenant   Posted: 10 days ago
PT 109 was one of the hundreds of motor torpedo boats (PT) of the PT 103 class completed between 1942 and 1945 by Elco Naval Division of Electric Boat Company at Bayonne, New Jersey. The Elco boats were the largest in size of the three types of PT boats built for U.S. use during World War II. Wooden-hulled, 80 feet long with a 20-foot, 8-inch beam, the Elco PT boats had three 12-cylinder Packard gasoline engines generating a total of 4,500 horsepower for a designed speed of 41 knots. With accommodations for 3 officers and 14 men, the crew varied from 12 to 14. Its full-load displacement was 56 tons. Early Elco boats had two 20mm guns, four .50-caliber machine guns, and two or four 21-inch torpedo tubes. Some of them carried depth charges or mine racks. Later boats mounted one 40mm gun and four torpedo launching racks. Many boats received ad-hoc refits at advanced bases, mounting such light guns as Army Air Forces 37mm aircraft guns and even Japanese 23mm guns. Some PTs later received rocket launchers. This Proboat PT 109 model was brought in 2013 for £100 these boats are rare now, This one had a few faults with the propshafts they were bent and noisy both were replaced, with quality 4mm shafts, motors twin 600s were also replaced by Graupner versions along with mounts and couplings, basically all the running gear, also two ESCs by Aquapower were added and a 2.4G RC system.

Thames Barge & Norfolk Wherry Open Regatta. by CB90 Lieutenant   Posted: 10 days ago
Hi, I have just phoned my Dad about this event as he lives in Norwich. and has completed his model Norfolk Wherry about a year ago. His Large Wherry Model is on the outside wall of the 'The Museum of The Broads' boat shed.

Uploading Photos to the site by CB90 Lieutenant   Posted: 10 days ago
Having trouble up loading photographs to both Photo Gallery and Build Blogs Harbour, is there a recommended size or file format that is required. Many Thanks CB90

Up Grade NDQ speed boat by CB90 Lieutenant   Posted: 10 days ago
This is not a build but a modification of a cheap Chinese boat just for fun, I got a bit bored of scratch building projects as they take so long especially as I am not retired yet. The NDQ 757 Coastal Brother 1:25 Radio Controlled Racing Power Boat cost about £25 from Amazon. These boats have a basic 27mhz radio and two 380 type motors which have forward and reverse and you steer by powering one motor or both for straight ahead. I bought two of these boats as they are light and about 24 in long, one to convert/upgrade radio, esc and brushed motors the second was to upgrade radio, esc for brushless motors. The brushed motor version I put in two higher rated motors (390) with cooling fans built in, but same motor diameter but longer body I had to modify the mounts, kept same couplings and shaft/propellers. I did remove trim tabs (fixed) and replaced the straight running adjuster for a racing rudder. The brushless version is the same but has brushless motors 2x 2845 2600KV sensor less Specifications: KV(RPM/Volt): 2600KV RPM: 50000 Max Current: 42A

WWII Italian MAS 562 by CB90 Lieutenant   Posted: 12 days ago
MAS 562 (Motoscafo Armato Silurante: Torpedo Armed Motorboat) While Browsing the internet I came across a free plan dated 1969 if a Italian Motor torpedo boat I found the craft interesting as it had a stepped hull, and this looked like a challenge, so more research and historical digging. Built in 1941 by Baglietto, Varazze: built of wood (mahogany). Baglietto, Varazze: built MAS 561 through to MAS 570 MAS Baglietto class 500, 4th series" Displacement 27.8 tons Displacement max 28 tons Length 18.7m Width 4.7m Draught 1.5m Propeller shafts 2 Machinery Isotta Fraschini petrol engines and Alfa Romeo or Cararo cruising petrol engines Power, h.p. 2000 or 2300 / 140 or 100 Max speed 43 to 46 knots Fuel tank 1.5 tons Endurance 350 nautical miles at 42 knots Armament 1 x - 13.2/76 or 1 x - 20/65 Breda 1940, 2 x 450mm Torpedoes , 6 - 10 x Depth charges Crew complement 13 persons MAS 562, was captured by Germans 9/9/1943, transferred to RSI, was painted in disorientation camouflage, was captured by American PT' boats on June 30, 1944 and PT 306 towed the prize into Bastia. It was painted in disorientation camoflarge It is one of the few to have survived the war and passed to the Italian Guardia di Finanza in the 1950's. In 1940 there were 48 MAS 500-class units. The plan shows the gun on a box platform not the case on the real boat. Making this boat so small has been a bit of a challenge. Running gear 2x Graupner 600 8.4v about 70watts each at rated voltage. 2x shafts 2x opposite turning propellers (2 or 3 bladed) 3 blades on real boat. 35-40 mm 2x ESC 1 or 2 Batteries The Model after studying plans and photographs I could see a few things that I could add to the plans. A cambered deck A revised transom shape (not square) Two propshaft and two electric motors with air cooling. A reduction in the number of frames /ribs as the boat I was going to make was only 29in (83cm) long. the three main problems with the hull where :- the new frame positions and the thickness of the stringers the wood I used was too thick 12mm x 6mm for a small boat Correct gun and position. The Hull is now skinned I will upload some photos soon.

Perkasa Class by CB90 Lieutenant   Posted: 12 days ago
[Score: 8/10] 36"/3600g Perkasa Class Capable of 10mph and a runtime of 25mins Triple Propellors (3 Blade 35mm) Direct Drive to a 2x 600 + 1x 700 type (3 Blade) Powered by NiCad (7.2v) 3Amp/h Batteries Controlled Through China (25Amps) ESC - Comments: A Malaysian Fast Patrol Boat Perkasa produced by Vosper in1966,she has 3 gas turbines engines and a speed of 54 knots, and diesels for cruising. The model was built in the 1980s but has only recently been fully powered up for planning speed, handle choppy water very well, port and starboard motors are 2x Graupner 600 7.2v and centre motor is a 700 type motor, 3 shafts run 3x 35mm propellers and it has two rudders, the guns are remote controlled (Please note the stern/rear gun is not accurate and is just a copy of the forward gun Bofors 40mm and not the 20mm Oerlikon. Search lights, radar, running lights all work the 3xESCs are a cheap China ones that do the job but need to go to neutral before going in reverse, just use self centring joy sticks on the transmitter.

CB90 by CB90 Lieutenant   Posted: 13 days ago
[Score: 7/10] 52"/5000g CB90 Capable of 8mph and a runtime of 25mins Twin Propellors (3 Blade 45mm) Direct Drive to a Graupner 700 Turbos (3 Blade) Powered by NiCad (8.4v) 4Amp/h Batteries Controlled Through Mtroniks (25Amps) ESC - Comments: Scratch built at 12th scale from pictures and profiles of the original boat, hope to upgrade batteries to 11.1v lipo. The boat was originally built in Sweden a class of fast military assault craft originally developed for the Swedish Navy by Dockstavarvet The CB90 is an exceptionally fast and agile boat. Speed: 40 knots (74 km/h) Draught: 0.8 m (2 ft 7 in) Length: 15.9 m (52 ft) Overall; 14.9 (48') Waterline Builders: Dockstavarvet, Gotlandsvarvet In commission: 1991 Complement: 3 (two officers and one engineer); Up to 21 amphibious troops with full equipment Armament: 3 × Browning M2HB machine guns; 1 × Mk 19 grenade launcher; 4 naval mines or 6 depth charges

Perkasa Class by CB90 Lieutenant   Posted: 13 days ago
Perkasa MTB A favourite model boat there must have been hundreds if not thousands made. When I brought mine there was a choice between two sizes 36in (90cm) or 48in (120cm) and then you could choose between a wooden hull or a fibreglass hull. I went for the smaller boat with the fibreglass hull. this was back in the 1980s. Background of the boat The boats Perkasa class consisted of three motor torpedo boats built by Vosper (UK) for the Malaysian Navy as follows:- Perkasa 150 Penula 151 Handalan 152 This model has 3 motors, port & starboard are Graupner 600s and one 700 type in the centre runs 3 ESCs front and rear guns operate via servos, with flashing LEDs down the barrels.

CB90 by CB90 Lieutenant   Posted: 13 days ago
The Model is scratch built from Photos and profiles of the internet it is around 52 inches long and currently runs on two Graupner 700 turbo motors (14.4v) and dual Mtroniks 25A ESC (12v) running twin contra rotating 45mm props, this model can spin on its own axis like the real boat but does not use waterjets due to cost. Completed in 2017. Whats a CB90 Its a Command Boat 90 originally built by Docstar in sweden and later also built in the USA under licence. The boat has a multi role capability and has be used by the Army, Police, Coast Guard and Ambalence Service Originally a Military craft for coastal waters and rivers with a shallow draft and powered by twin water jets this 15 ton Aluminum boat can deliver half a platoon directly on to beach heads via its landing craft type single man door at the bow. This craft has excellent manoveraility and can crash stop ( go into full reverse and stop) in 1.5 x its length. No-wonder the american's wanted this boat. Video of real boat