My own design deep "V" hull with upper-works loosely to 1:15 scale replica of the Mitchell 31 boats previously used by various Hampshire constabularies in and around the Solent. The intention is to fit this model with a working, rotating, radar scanner using the servo motor and gearbox from an old video camera lens system; working lights including flashing blue police lights and a sound-alike "wee-wah" siren - just for the hell of it (and because I can)! Technical details: Hull length: 867mm. Construction: GRP layup with 1.5 and 3mm ply and balsa deck, cabin etc. Motor: MFA Torpedo 850. Propeller: X50mm plastic. Battery: 2 x three cell LiPo pack in parallel. Speed controller: Mtroniks Viper 25Amp. Radio: Hobby King 2.4GHz.

I've at last done something with my mystery Orange hull, featured earlier, whilst in St Lucia last year I saw a launch used as diving support with almost identical shape called 'KIKA' so that's what it had to be!
Power from an old 600 Johnson type motor with 7.5v battery and 20A ESC, with prop & running gear from my oddments box. Tried her at Mangerton Mill last week, she goes well but needs a more powerful ESC as 15A fuses blow at 3/4 power, also veneer deck has started to bubble - so work in progress really!

Chris

Built out of house guttering to a scale equivalent to model railways HO the layout is approx. 4 x 3 ft. Mounted in a wooden frame and provided with a protective see through cover it fits into the car and can go anywhere. it has been an on-going project to build RC boats to suit. Those used at present are commercial products (loa 5" (125mm)) with simple two channel two prop drives - not proportional but with forward and reverse and by operating one or both props plus reverse steering is OK. Battery life limited to 6-8 minutes with similar recharge time. Built largely from scrap and odds and ends the project cost well under £80. The idea is/was to have several units and link them together to make a large layout!

RTR minI electric speed boat with proportional 2CH RC. 280mm loa (11")

Good boat and fast. Watercooled brushed motor. Normal problem with commercial mini-boats is lack of proportional RC but this is fine. Battery life about ten minutes - low freeboard and takes on water but electrics/RC have proven resistant to regular swamping!

Built for the MMI Solar Boat Challenge a number of years ago and includes the winner (Amber Sol-air !) that had to complete as many circuits as possible of a canal system constructed out of household guttering in a fixed time. (the gutter naturally limited the size - loa, beam and draft). All built out of depron from my own head - with enough left over to build several more ?!

There are a number of ideas for propulsion - all powered by solar panels, no batteries. The pool is 12 feet diameter and great for boats of this size.

HI Some new photos of my Hunstman sailing at Cwmbran this Sunday morning, running on a 11.1 volt Lipo with "a wait for it" 55X 2 blade prop through a 3:1 reduction gearbox on a Johnson 600.
Graham

this is the Maggie B she is a modified Sothampton R T R tug. there is a video of her in the video section. the main casing was taken off and the lower three quarters of it was cut off, so that it reduced the overall height., she is fitted with two M tronic speed controllers and a new larger5,000millI amp battery which is fitted across the hull behind the motors and in front of the steering servo, she still has the original props but they are now turnig outwards to go ahead. she is now a very handy and stable boat.

Lady Wooes, by Mobile Marine of Lincoln. SemI kit. I bought the hull all the timber and drawings along with dozens of white metal fittings ages ago, started it and left it for 5 years, moved to North wales and finished it. Drive is 2 Ford Cortina fan heater motors driving a pair of 55mm Prop Shop props by tank steering, reciprocating steam engine sound board, smoke unit and full working lights all from 2 X 12 v 7 Amp batteries........a good and interesting but very frustrating build to get things right.
Sailed at Erias Park, Colwyn Bay Model Boat Club and sometimes at West Shore LLandudno.

Fibre glass Arrawana 22 inches less than a kilo,brushless 3600 kv 60 amp esc runs on 11.1v 3cell . Pretty fast but still exp with props

HI All, I had a request for infomation on the Motor and Gearbox setup that I have fitted into a Wavemaster, a Sea Commander, and Fireboat, all shown in various posts of mine. The gear boxes are fitted with a 2.92:1 reduction gear, and were purchased from Hong Kong on Ebay, this is the information if I can publish it in this post. I mount the gearbox this way up to position the motor in the boats as low as possible.

RC Model Big Size Metal Gear Box
http://www.ebay.co.uk/itm/RC-Model-Big-Size-Metal-Gear-Box-with-3-Metal-Motor-Gear-for-R-C-Airplane-GB090-/270842196092?pt=US_Character_Radio_Control_Toys&hash=item3f0f73f07c

Ebay Number

270842196092

Specifications
Material: Steel Brass and Aluminium
Main Gear: 38 Teeth Aluminium
Motor Gear: 13 Teeth Brass
Gear Rate 2.92:1
Prop Shaft Diameter: 4mm
Prop Shaft Length: 13mm

Hope this helps those who have asked Graham

This model was scratch built from US Coast Guard plans. The boat is constructed of balsa wood and the hull coated with fiberglass resin. All the deck gear is scratchbuilt from brass, the propellers, led's and figures are the only commercial parts. Scaled at 3/4=1 foot the model measures 42 inches in length.
It's powered by a Pittman 12 volt motor and controlled by a 4 channel radio. Working features are running and spot light, siren with flashing blue light, sweeping radar antenna and deck lights. Built in 1985 the model the lifeboat is accurate in appearence for that time period.(The prototype has been modified since).
The actual lifeboat is attached the the Coast Guard's Motor Lifeboat School at Cape Disappointment and is one of four boats of this class.

this is a slightly modified RTR tug Southampton the main casing has been lowered and a bigger battery fitted, but she still has the original motors and props, she is seen her towing a large barge a flat top pontoon ,a small tug and a Graupner German patrol boat, with a model slipways Envoy doing its best to overturn the lot.