- jugge🇸🇪Chief Petty Officer 2nd Classvery nice build , thats the one i dreamed off when i were young👍Like 2Liked by Martin555 and BigAlio
- BigAlio🇬🇧Petty Officer 2nd ClassVery nice lots of hard work well worth the effort. be nice to see her on the waterLike
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123 posts · Page 4 of 11Built 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 you hit a object in the water and also for 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.
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.
- RNinMunichFleet AdmiralAbsolutely, Modelling par excellence👍
Just think of the planning that must have gone into this! Building such detail deck for deck from the keel up 😲 Never mind the superb weathering, just back from several N Atlantic crossings!?
And where the heck did he get all the interior detail from ?????
Fabulous, just great shame that she'll never float 🤔
- RNinMunichFleet AdmiralNice one Krampus👍, love the crew 😉 There's much better beer in Bavaria though! 😲 Cheers Doug 😎Liked by figtree7nts and Krampus
The Vosper hull is built from balsawood and fibreglass. The upper deck and superstructure is from balsawood. The weapons and fittings are from brass, aluminium and plastic. The 20mm and gunner can rotate.
USCGC KATMAI BAY (WTGB-101), H/P SAULT STE. MARIE, MI, USA.
- circle43nauticalChief Petty Officer 2nd ClassTank you! Just received kit about an hour ago. Life's good, I reckon. Shegoes well with the matching scale cutter. This is truly a dream come true!
MGB623 is an MGB, flying the Norwegian flag and belongs to a good friend.
Mine is MTB741. it is powered by 2 Graupner Speed 700 12V motors with NiMH batteries. The 6 pdrs and 20mm guns can rotate. it has a balsa planked hull and fibreglass skin. Decks and superstructure are also balsa. Guns are from tinplate and brass.
- RNinMunichFleet AdmiralVery impressive 👍 well done both.
Great looking location as well.😎Liked by reilly4
- RNinMunichFleet AdmiralHi, thanks for the info👍 I'm new to BLs, but learning fast, and your experience confirms my growing suspicions that outrunners not only deliver more torque than inrunners (size for size) but that they are also more reliable and seldom need water cooling.
Your new motor seems to be a larger diameter 58mm?, as opposed to 31mm for the old one, so I begin to wonder if the old ones were simply overloaded by a big prop causing them to draw more and more current and hence cook! 😡😭
Check out this test drive (Italian)of your new type motor!!
cheers Doug 😎
PS Caption says that with more than 3/4 throttle the boat becomes unstable! Then it flips 🤔 - RNinMunichFleet AdmiralPS Don't worry about 'adding up' the Watts and Amps!
True the spec says 12.6v and 35A, which theoretically gives 441W.
And the power is rated at 220W. This simply indicates to me that the motor scoffs 441W of power (at Max ratings) and spits 220W out again, i.e. ~50% efficiency 🤔
Almost any decent brushed motor will beat that! But with other penalties😉
Cheers Doug 😎