Wednesday, November 22, 2017

KEP's FE-4S V2 (P-Open) Freebie

Updated V2 version (2017-11-22)!

Freebie drawing of the new updated KEP's FE-4S V2 P-Open 4-cell LiPo Brushless in-runner Outrigger Electric Hydroplane.

  • No more toe-in on the turn-fin!
  • Updated V2 turn-fin mounting!
  • Updated V2 sponsons to accommodate the new turn-fin mount!
  • New V2 turn-fin!
Note, the KEP's FE-4S is a P-Open 4 cell LiPo outrigger. The boat can be fitted with brushless in-runner marine motors with physical dimensions of 36 or 40 mm diameter that are 65-74 mm long (note, it's physically possible to actually use motors up to 80 mm long but at those lengths it gets more difficult to make a nice cowling and the clearance towards the rear sponson tube is less "wrench friendly").

There is also an slightly smaller freebie version available for the P-Limited class they run in the US (with Aquacraft 3650-2030KV motors). That boat is called KEP's FE-4SL - click HERE for info and download of that. But if you just want to build one of these I recommend building this one as it also works with the smaller P-Limited Aquacraft motor.

Note, if you plan to go fast - let's say above 100-110 km/h - then you need LOT's of water cooling to stay below 90°C on the ESC. Use at least 4 mm tubes in the tub and matching large silicone tubes. Make an efficient and short cooling loop so the water will flow as much, and easy, as possible. It might be needed also to add a second water pick-up to cool the motor separately.

If you want some inspiration for building your own KEP's FE-4S rigger - Click Here (lot's of build pictures)

  • Made for 36x65-74 mm and 40x65-74 mm motors
  • Tub Length: 689 mm (27.126")
  • Total Length, from transom to sponson tips: 754 mm (29.69")
  • Tub Width: 84 mm (3.31")
  • Tub Height: 51 mm (2")
  • After Plane: 537 mm (21.14")
  • Sponson Length: 442 mm (17.4")  
  • 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: 1.4°

Main drawing of the KEP's FE-4S V2 (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.

Complementary drawing of the KEP's FE-4S V2 (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.

If you already have built the original FE-4S (P-Open), or the FE-4SL for that matter, then you can update it with the New V2 Turn-Fin. Make sure you remove all toe-in on the turn-fin mount though!

Wednesday, November 15, 2017

iMBRA WC 2018 Update November 15th

iMBRA Update November 15th
Just to let you know, registration form to be sent to all international federation is nearly ready to go : we are just missing confirmation for the banquet.
In the meantime, shall we remember information posted on November 1st below. Regarding campsite near the lake, as many of you asked info, facilities will be like in Haarlem or Oudenaarde, from those who know those place! i.e 2 blocks of each (toilet/showers) at 2 different places.
Following our last visit to EGLETONS, here are the latest information we can provide.
  • IBIS: It would seem that the that manager has decide to block out half of his hotel to his regular guests, which means there might not be much availability. There is a chance that some of the reserved rooms might be released in February.
  • OTHER HOTELS: There are rooms still available, so please contact them directly.
The manager is kindly offering a 10% discount that is available on rooms that are booked up to the end of December.
The bookings from run from Saturday to Saturday and prices can be seen below per person.
  • Adult (16+): 415 Euro – with 10% Discount: 373 Euro
  • Young Person (12 to 15): 373 Euro – with 10% Discount: 335 Euro
  • Children (6 to 11): 332 Euro – with 10% Discount: 298 Euro
  • Children (3 to 5): 290 Euro – with 10% Discount: 261 Euro
  • Children (0 to 3): Free
The (Village Vacances le lac) fares includes:
  • A room of 2 single beds, bathroom, breakfast and dinner. Some of rooms can be “connected” (IE 4 people) or a 3:rd bed can be added for young children.
  • Supplement of 15 Euro per night if used as a single (room).
  • Please contact them at: to pre-book the room (required information; names, number of people, ages, and period of stay)
  • Payment is sent directly to VILLAGE VACANCES LE LAC, and is not part of iMBRA WC Registration. iMBRA cannot accept any responsibility for issues regarding accommodation, but we will do what we can to help if there are problems. Once the booking is officially opened we can advice you.

  • CAMPSITE across the lake: Please contact them directly
  • CAMPSITE around the lake: to be asked on IMBRA WC registration form.

See you all soon,
France iMBRA and the iMBRA Committee
Source & France iMBRA on Facebook