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New bjcraft epilogue

Old 02-19-2021, 12:13 AM
  #26  
J-P
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Hi Glen,

Wing span is 1875 mm with SFG

The model flown at the WC had traditional wingtips

The kit has SFG, but you can do your own wingtips ...









Last edited by J-P; 02-19-2021 at 12:54 AM.
Old 02-19-2021, 08:31 AM
  #27  
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JP,

Thanks, I like the ability to switch between the SFG vs. traditional tips to judge which has benefits flying the US AMA Masters schedules. To me the SFGs had little to no value on the Passport.
Old 02-22-2021, 12:23 AM
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T-canalyser installation
A small shim on the right side of the fuselage is needed to have the T square
I did it with Bob Violett Poly Ply

Next is the stabilizer setting
There is no incidence adjusters
Both elevators are accurately set to operate parallel with BRYAN HEBERT magic tools

Then throws are set and checked with an Aero perfect digital































Last edited by J-P; 02-22-2021 at 12:27 AM.
Old 02-23-2021, 07:09 AM
  #29  
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BJ read on RCU I had just 3 air exits on each side of the fuselage, and holes in the tail post.

He recommend to have more air exits, a tenth of holes underneath the fuselage.

I opened the rear of the canopy to avoid some extra pressure in this area, leading to the canopy leaving the fuselage in flight ...

I reinforced too the small plywood parts with Bob Violet Poly Ply













Old 02-25-2021, 06:17 PM
  #30  
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Very nice work Jean-Paul!
Gregg Okert would be very proud...😉
Old 02-26-2021, 04:34 AM
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Hi Steve,
I remember very well the 90's, when I was in std-by in LA between Paris and Tahiti
I met Warren Fox at Mile Square Park, he was flying with a Jekyll built by Gregg OKERT
Warren introduced me to Gregg ... I had soon the same plane built by him
I spent a lot of time in his workshop, he really inspired me ...
He is a master builder and such a nice guy
JP
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Old 02-26-2021, 04:53 AM
  #32  
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Battery tray
In order to be able to fly with 5000 mah THUNDER POWER packs or 6000 mah on a windy day, I determined accurately where to position the battery tray to achieve the recommended 230 mm to 260 mm from the leading edge CG
The 10 mm square carbon is drilled for the 8 mm carbon tube.
The bottom frame touch the landing gear box
The D3 ESC is mounted with velcro on a small balsa carbon tray.
Positioning the D3 in front of the air intake is very important according to Adam DEBOWSKI to have a good ventilation, specially on a hot day






















Last edited by J-P; 02-26-2021 at 04:56 AM.
Old 02-28-2021, 02:52 AM
  #33  
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Radio gear installation
FUTABA SBUS
7108 SB RX
JETI SBEC 25 g selectable 7 or 8 Volts
OPTIPOWER ULTRA GUARD & BEC GUARD























Old 03-01-2021, 01:28 AM
  #34  
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Hi JP,
Just wanted to as hew effective the cooling for the D3 ESC is in that location?
Thanks

Keith
Old 03-01-2021, 01:45 AM
  #35  
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Hi JP,
Like Keith I'm wondering if your cooling will be sufficient? I have always mounted the D3s right up close to the chin inlet below the motor. A colleague had a failure even with the ESC mounted there until he opened up the air outlet holes.

Malcolm
Old 03-02-2021, 02:21 AM
  #36  
J-P
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I installed a D3 in the same way on 6 different planes
ACURACY MONO
IMMORTAL
ZEBEC BIPE
ADVANTAGE BIPE
OREKA
and now EPILOGUE

The ESC is barely warm after a 8 mn flight, even on a 28C day
The ESC is positioned directly in front of the air intake.
The Exhaust air is roughly 3 times the air intake.

I had ZERO problem with this ESC.
To quantify, 300 flights last spring in Florida with the ACURACY, 300 flights with the ADVANTAGE BIPE in France
















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Old 03-02-2021, 04:28 AM
  #37  
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Thanks JP, good to see the different mounting strategies you have used

Best wishes

Keith
Old 03-03-2021, 07:50 PM
  #38  
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Mine is comming too!


BJcraft dealer for COLOMBIA
we do ship worldwide
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Old 03-05-2021, 05:04 AM
  #39  
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EPILOGUE is now completed and ready to maiden.

I'm flying now in another club 45 mn from my house, on a good runway.

After all the adds and reinforcements , what about the total weight ?

Plane ready to fly, without batteries 3.594 g

With THUNDER POWER TP 6000 mah 4824 g ( I cut the extra wires )
With THUNDER POWER TP 5000 mah 4724 g
With HACKER 5100 mah 4665 g

That's a good result

I have no doubt about the flying characteristics

BJ CRAFT EPILOGUE + ADVERRUN SINGLE DRIVE + ADAM D3 ESC + FALCON PROPS & SPINNER + FUTABA T18/T32 SBUS + RALPH SCHWEIZER + MORRIS HOBBY

Thanks BJ for this beautiful plane












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Old 03-05-2021, 07:17 AM
  #40  
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Great total weights J-P.
Old 03-05-2021, 11:57 PM
  #41  
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Hello Jean Paul

Very light.
How the plane behaves on knife edge and photos of the plane on the field ?
Thank a lot.
Claude
Old 03-07-2021, 08:45 PM
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Waiting for the flight report. The build looks great and very light!
Old 03-16-2021, 05:13 AM
  #43  
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I like the work you’ve done around the strengthening of the undercarriage area. I will do the same when I get my next model.
Old 03-26-2021, 02:15 AM
  #44  
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Finally the field has been rolled, and the weather was perfect yesterday for the maiden flights.
I had 3 flights.
Rolls look very nice, plane feel light, and the Adverrun is really powerful with a Falcon 21,5 X 13
With 0,7 at the wings and O at the stab, verticals are dead straight.
Need a slight throttle to elevator down mixing
Fly well with the recommended CG, and approach for landing is really easy.
I started the basic trimming process but the good point is incidence and down thrust don't need at this point any modification.
Seems to me this plane has a great potential.




















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Old 04-05-2021, 04:22 AM
  #45  
J-P
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I didn't really progressed with the EPILOGUE trimming
I'm conducting some tests, new engine, different props, same D3 ESC, and trimming the OREKA ....
Today the ADVERRUN Single Drive remain my favorite 😎😎



















Old 04-11-2021, 06:07 PM
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Here is my plane progress

dealer for BJ, we do ship worlwide.







Old 04-11-2021, 10:51 PM
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Is the OREKA custom paint .....GP??
Old 04-12-2021, 06:16 PM
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Todays advances,

BJcraft dealer for Colombia





Old 04-12-2021, 11:59 PM
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I keep on practicing with the EPILOGUE, testing different engines and props.
At this time I have 0 mixing rudder to ailerons, and a 1 to 1,5 % mixing rudder to elevator on the knife edge
I'm testing a more forward cg than recommended by BJ

After a few years without maintenance, our field now looks like a wasteland.
It would be necessary to plow and sow grass
There is no grass left on the "runway", just weeds and holes filled with sand ..... so the landing gear must be strong to resist ....

Not all by the way unfortunately ...














Old 04-15-2021, 03:12 AM
  #50  
J-P
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After about 40 flights on a degraded grass runway, I noticed a small crack of the landing gear box rearward of the left ldg leg.
If this box is strong enough flying off a concrete runway, it's not on a non well maintained grass runway.
So after using some thin CA to reinforce the plywood, I installed underneath the ldg box a 1,5 mm carbon plate ( 15,5 cm by 4 cm) glued with 3 hours epoxy.

I was really breezy and cold yesterday, and the combo EPILOGUE / ADVERRUN Single Drive showed his efficiency in the crosswind.

The CG moved forward help a lot.
Still no need for a rudder /ailerons mixing
I had to increase the throttle to elev mixing on the downline
The rudder to elev mixing for the knife edge maneuvers is small and constant with the rudder deflection.












Last edited by J-P; 04-15-2021 at 03:35 AM.
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