Tuesday, December 22, 2015

Abu Dhabi 2015

December 9 to 14 we headed south for the F1H2O race in Abu Dhabi again. It was 2 years since I was there the last time and we had a blast this time also!

Thi time we where VIP invited by Erik Stark (#28) now driving for the Emirates F1 Team. Super Nice!

For more pics - Click HERE.





Sunday, December 6, 2015

KEP's T3-21 Freebie


Presenting the new KEP's T3-21 Freebie!

Main KEP's T3-21 News (compared to the earlier KEP's T2-21):
  • Flat sided sponsons. It really does not matter if the sponson top-view is elliptical, as the earlier T2, or flat sides as the new T3 - there are no performance benefits with elliptical so I changed it to flat sided instead. The new flat sided sponsons are much easier to build also!
  • Longer sponson ride-pads. Improves rough race water handling.
  • Improved side profile of the sponsons. Creates less lift and less water drag (from the spray behind the ride pads).
  • Improved turn fin bracket. More rigid (thicker 3 mm material used) and positioned at a more optimal place - further up and away from the water also.
  • Lower AoA of the sponson ride pads. Improved handling in heat-racing conditions.
  • Longer after-plane. It makes it a tiny bit better in rough sea (other improved items makes more of a difference though).
  • New turn-fin design - deeper, more hook and a different swoop design. Improved cornering and even easier to drive.
  • The tub is leaning forward (lower in the front then in the back). Improved ride that overall creates a better stance of the complete boat on the water.
  • Slightly different nose shape of the tub.
  • Wider spacing on the sponson tubes (front & rear). Improved rigidity. As the tub now leans forward the tube centers are also adjusted so they are parallel to the water.
  • Channel 2 & 3 servos sit on either side of the flex and the receiver on the tub floor. Much easier to fit the mini servos.
  • Wider ski with improved AoA. Better in rough water and it's easier to maintain the overall boat AoA everywhere on the course.
  • Optional ski design with rakes on the running surface. Improved side stability in the corners and on the straights.

Specifications:
  • After plane length: 550 mm (21.65")
  • Overall length from transom to the tip of the sponsons: 765 mm (30.12")
  • Outside-Outside sponson spacing: 500 mm (19.69")
  • Tub length: 682 mm (26.85")
  • Tub inside width: 62 mm (2.44")
  • Tub outside width (with 4 mm thick sides): 70 mm (2.76")
  • Tub height: 47 mm (1.85")
  • Sponson width: 23 mm (.91")
  • Sponson ride pads (removable): 2 x 30 x 165 mm (.079" x 1.18" x 6.5")
  • Ride pads AoA: 3.4°
  • Ski width: 35-40 mm (1.38-1.57")
  • Ski AoA: 1.4°
  • RTR Weight (without fuel): around 1650 g (58.2 oz)

Recommendations:
  • Futaba 4PLS radio
  • 2x Futaba S3172SV mini servos for channel 2 & 3
  • Futaba BLS571SV low profile steering servo
  • Vapex 1000 mAh 2S LiFe receiver battery
  • V.S. Third channel fuel metering base with O.S. needle
  • V.S. Speed 2101M motor
  • Note: the T3-21 works equally well with an in-line engine. It will run a tad bit lighter in the front though but that is NO problem.
  • Hipex 180° Exhaust Manifolder
  • Hipex MP1-21 Hydro Muffled Parabolic Pipe
  • Walter Barney @ Tanks 2U made SS tank T2/T3 (same size)
  • 8 x 10 mm pultruded carbon sponson tubes (475 mm long)
  • 10 x 12 mm aluminum tubes for the tub and sponsons
  • 2 mm carbon rod for securing the sponson tubes (much better then any other securing system we've tried by far).
  • Propeller: The T3-21 is not that critical regarding props I think and it depends on how you race and drive. For me personally I like an "easy" prop with not that much cup but with a a bit more COB pitch so you get good acceleration. I also like to be able to throttle at all times so that means I don't like props that are heavy on the engine and I don't use that short pipe lengths either. All props I've used are done by Mark Sholund and the ones Ive used the most are ABC 50x69 with 45.25 mm dia, 2.81 COB pitch and 3.33 cup. The ABC H6 with 45.9 dia, 2.9 COB pitch and 3.33 cup works fine also and they let you rev the engine quite easily.

Extra T3-21 info:
  • The current KEP's T3 design is based on "3-point flat-plane technology" that means they run very light on the water. This type of outrigger design rely on a good balance between aerodynamics, hydrodynamics, center of weight, how much weight you have on each of the 3-points, rudder and the turn-fin. If you build the T3-21 according to the plans and don't make any of your own design or geometric changes - then there is plenty of adjustment in the changeable/removable ride-pads, the changeable/removable ski and the strut height/angle.
  • As the T3's run so light you will most likely be disappointed if you expect the boat to be able to run "WOT" (wide open throttle) everywhere and in all water conditions. It's simply not possible unless you build it really heavy.
  • A. Ease off if you need to make a left turn.
  • B. Accelerate through the turns and ease off halfway down the straightaway or at least before going into the turns. After a short "off" it will settle down and then you can turn as hard/fast as you are able to (depending on race conditions, weather, wakes etc).
  • Please make the turn fin according to the plan and bend it to the specs. DON'T use any other turn fin shape and/or hook. (Make sure its sharpened properly also.)
  • Don't place the turn fin too far forward. The boat will "dart" (wanting to continue to turn coming out of the corners) and it will be difficult to keep straight.
  • If your T3 is pulling to the right at speed on the straights: Double check that you have mounted the sponsons straight vs the tub and the turn fin bracket has a 1.5 mm toe-in. If not - correct that. If it still pulls to the right, check that the turn-fin is sharpened correctly and not dull on the leading edge. A turn fin that is not sharp will make the T3 to pull to the right even at slower speeds.
  • The current T3 design is not really suitable with any boat size bigger then a .45 (7.5) if you plan to race them together with other boats. The bigger riggers (.90's and Gas etc) are a completely other set of beasts so to speak and they need to be designed accordingly to their needs. So, if you do your own scaled-up T3 for a .90 or Gas size - you will be disappointed I think.
  • If you want some building tips etc - look to the right in the menus for the earlier T2-21 Build Series I did. The T2 and T3 is not exactly the same but you will get a feel for how to build one. If scratch building is not your thing though - go to Zipp Kits and buy a JAE 21G2 Kit instead and start learn to build on that. :)

KEP's T3-21 Main Drawing - This pdf includes all the templates you need. The Freebie drawing is in A1 size (paper size: 841 x 594 mm). Make sure that it's printed 1:1 scale / 100% size. Click HERE for download (works best on a stationary normal PC/Mac). (Note, the 1of2 pdf is updated with a better side view of the turn fin after it's bent - it's just a visual thing)

KEP's T3-21 Extras Drawing - This pdf includes some extra measurements. There is no real need for printing this one. The Freebie drawing is in A1 size (paper size: 841 x 594 mm). If you chose to print this one also make sure that it's printed 1:1 scale / 100% size. Click HERE for download (works best on a stationary normal PC/Mac).

KEPs T3-21 Optional Ski with strakes. This extra optional Freebie drawing is A3 size (paper size: 297 x 420 mm). If you chose to print this one also make sure that it's printed 1:1 scale / 100% size. Click HERE for download (works best on a stationary normal PC/Mac).

If you want to cut-out the tub sides, ski sides and sponson side views on a CNC etc - Click HERE for download of a zip file that includes dxf & dwg drawings of these three T3-21 template side profiles. Note, you need to specify the hole dias yourself (in a CAD program).

If you have the earlier KEP's T2-21 - Click HERE for a download of an updated "T3-21" fin that is adapted for the T2.

Monday, November 30, 2015

KEP's FE-4SL (P-Limited) Freebie


Freebie drawing of a P-Limited 4-cell LiPo Brushless in-runner Outrigger Electric Hydroplane.

Note, this KEP's FE-4SL is a P-Limited 4 cell outrigger that is mostly run in the US with a spec motor (Aquacraft 36-56-2030KV). The boat can be fitted with motors with physical dimensions of 36 mm diameter and 56-65 mm long.

If you plan to use a bigger motor then that there is now an P-Open class rigger also called KEP's FE-4S. That suits motors of either 36 or 40 mm diameter and up to 74 mm long. Click HERE for info of that.

Specs:
  • Tub Length: 660 mm (25.98")
  • Total Length, from transom to sponson tips: 735 mm (28.94")
  • Tub Width: 84 mm (3.31")
  • Tub Height: 51 mm (2")
  • After Plane: 518 mm (20.39")
  • Sponson Length: 432 mm (17")  
  • Sponson Width: 23 mm (.09")
  • Sponson Ride-Pad Width: 30 mm (1.18")
  • Sponson AoA: 3.9°
  • Ski Width: 30 mm (1.18")
  • Ski AoA: 1.3°


The main drawing of the KEP's FE-4SL (1of2). Download it HERE. The PDF size is A1 = 841x594 mm. When you have had this printed out in 100% size you will cut the lower part away to make the actual templates etc. (Note, the 1of2 pdf is updated as the first one wrongly stated that the height of the ski itself should be 23 mm where it in fact should be 22 mm. The drawing itself was/is correct though - it was just the text that was wrong)


The complementary drawing of the KEP's FE-4SL (2of2). Download it HERE. The PDF size is A1 = 841x594 mm. This one includes some extra info, extra measurements and some set-up tips etc.

Wednesday, September 23, 2015

Naviga FSR WC 2015 Results


Early August we raced the Naviga FSR World Championships in Görlitz Germany. I will not make a long report as basically the race was "crap" for me... Mostly due to the fact that I did not manage to get a decent race pace on my boats in the very, very hot weather. Basically my boats where too fast for the very low oxygen levels and  the heat-build up was to much on my boats.

But there where lots of other racers that did very well in the hot conditions and I congratulate them ALL! :)




Thursday, September 3, 2015

Third test of prototype KEPs FE-4S

At the recent World Champs in Görlitz I tested the new prototype KEP's FE-4S for the first time. In total it has been run three times and this is the third run with Micke behind the wheel.

Info (as it's run in the video):
• Old prototype T2 nitro sponsons
• Castle-Neu 1512-2650KV motor (40x68 mm) with water cooling
• Castle Ice 240 ESC
• Two VP 4S 3300 mAh LiPo batteries in parallel
• Castle 8AWG wires
• Castle 6.5 mm connectors
• Octura 1445 prop with 3.1 cup
• 2800+ Watt
• 208A peak
• 38.000+ RPM
• Total weight: 2560 g
• Weight Balance: 38% rear / 62% front

Tuesday, July 14, 2015

KEP's T2-45 testing



Here's a short video of me driving the KEP's T2-45 (still prototype) during some testing in preparation for the upcoming Naviga World Championships in Görlitz Germany. Note, the boat is not intended or optimized for this type of smooth water run by yourself type of "racing" - it's made for heatracing with other boats. In the clip I do about 10.9-11.5 second laps but I guess if I would have gone flat out it would do low 10's I think (Naviga course).

The prop is a Sholund 1657 (need to check the specs, but its heavily cut-down in area), pipe is a Cooper 45 with add-on "Naviga" muffler (its a Wella hairspray can). Fuel is 60% nitro with 8% Klotz Benol (recin) and 8% Klotz Original Techniplate oil (same fuel-mix I use in 3.5).

KEP's T3-21 prototype testing #2



In comparison with the #1 clip, this second clip is with a slightly different version of the pre-production Hipex pipe (still @ 196 mm length) but it still does around 12.5 to 13s lap times wich is quite ok and a good set-up to start with.

The testing was done in Oxelösund as preparation for the upcoming Naviga World Championships in Görlitz Germany. Testing new "T3" sponsons with new turn fin and new rear ski design. Im also continuing to test the very nice V.S. SPEED 2101 marine engine that feels better and better. Also new is a new upcoming "parabolic" pipe and 180 deg manifold from Hipex that feels very smooth and race friendly (@ 196 mm length).

In this clip its a bit too smooth water as this is not a run by yourself type of boat - its a heatracing boat that really comes alive in race water with other boats.

The prop used was a Sholund H6 that Ive not used as a race prop the last couple of years (saving the race props to the worlds). It has a 2.9 COB pitch and 3.33 cup. The dia is just over 45 mm (I think). The carb used is the first generation Zoom 21. Fuel is 60% nitro with 8% Klotz Benol (recin) and 8% Klotz Original Techniplate oil.

KEP's T3-21 prototype testing #1




Recent 3.5 testing in Oxelösund as preparation for the upcoming Naviga World Championships in Görlitz Germany. Testing new "T3" sponsons with new turn fin and new rear ski design. Im also continuing to test the very nice V.S. SPEED 2101 marine engine that feel better and better. Also new is a new upcoming "parabolic" pipe and 180 deg manifold from Hipex that feels very smooth and race friendly (@ 196 mm length).

In this clip its a bit too smooth water as this is not a run by yourself type of boat - its a heatracing boat that really comes alive in race water with other boats. But it still does around 12.2 to 12.7 lap times wich is quite ok and a good set-up to start with.

The prop used was a Sholund H6 that Ive not used as a race prop the last couple of years (saving the race props to the worlds). It has a 2.9 COB pitch and 3.33 cup. The dia is just over 45 mm (I think). The carb used is the first generation Zoom 21. Fuel is 60% nitro with 8% Klotz Benol (recin) and 8% Klotz Original Techniplate oil.

Wednesday, July 1, 2015

New VS PTO .21 Powerhead Engine

The new and exclusive VS Powerhead .21 marine engine is based on the very powerful O.S. Speed 21ZX-R on-road racing engine and is an extraction of the world famous O.S. Max precision and technology together with an additional 'Rody' touch and development.

Features:
  • Reliable O.S. SPEED quality, power and spare parts availability.
  • A specific 'Rody' shaped crankshaft with left threaded thread so the flywheel will not unscrew itself.
  • PTO Air cooled cooling-head for easier setting of the carburetor and more stable temperatures.
  • A specific 'Rody' 7-Port liner with MES exhaust system.
  • Combustion chamber for conical (turbo) glow plugs.
  • A carburetor is NOT included so you are free to choose the carburetor of your liking, as long as it has a neck diameter of 15 mm.
  • We suggest to use with this engine maximum 25% nitro fuel.
  • Use it on the O.S. Lower Unit

Specifications:

  • Type: VS POWER HEAD ENGINE 21
  • Size: .21 (3.5cc)
  • Bore: 16.27 mm
  • Stroke: 16.80 mm
  • Crankshaft: 14 mm CWR
  • Cylinder: 7T ABC
  • Ports Intake: 7
  • Ports Exhaust: 3
  • Carburetor: Not Included (15 mm neck dia)
  • Cooling-Head: 49 mm / 7-fins
  • Glow plug: Turbo / Conical (not included)
We have obtained great performances with this VS PTO .21 Powerhead engine in combination with our self developed exhaust system (Part #HIP2034-OBL), together with the O.S. Max 21D carburetor (Part #23882000).

LINK to the Webshop.




A Very Windy H3.5 Heat



A very windy H3.5 heat from our latest Swedish Hydro Nats. It's me in the purple KEP's T3-21 (proto) with VS Speed M2101 engine and new prototype Hipex exhaust and Mattias Bengtsson in the pink KEP's T2-21 that survives the heat. :)








A Very Windy H7.5 Heat



A very windy H7.5 heat from our latest Swedish Nats. Im the only one surviving. :)

KEP's T2-45 prototype with NR45 power.







Tuesday, June 30, 2015

FSR-H & FSR-O Results Swedish Champs #2 2015










Here is the results from the Swedish Nats Race in FSR-H & FSR-O held in Oxelösund beginning of June.

The race was good but the weather on Saturday was a bit cold. On Sunday it was fine weather but even more windy.

Pics from the race HERE