Andre Rose

Well First attempt at flight was something I want to forget.   Used the wrong lipo and got the c of g a bit too much on the tail and after leaving the bungee and ramp of the launch the F86 would not turn right at all.   Landed her behind the pits in next field. Aftre thinking the worste could not locate the model. Found it under too large tree truncks with a few minor scratches on the wing and a cracked canopy.  Also found the right ahnd side of the horizontal stab was broken near the fuse. I appears it broke on launch making it turn left on any elevator input.   Repaired and flew this sunday. used carbon rods in horizontal stab to secure fron breaking on both sides. On inspection the balsa was very soft.  This time double checked c of g having used the heavier 4S1P 4300 loonmax 20c pack. Noted  from jeti in flight telimitry max watts 1001 dropped to 900 at full throttle.   Plane is fast for a scale jet but can fly at slower speeds. Looks good doing scale turns and rolls and loops. Tested c of g and stall and found it just sank at a controllable rate, although it was very windy on sunday. Landing was fast but managable but needed a bit of speed because the wind was gusting a bit late afternoon.   While not the ideal conditions, I enjoyed my 4:30 flight having only used 2950 miah of the capicty of the Lipo based on the Jeti telemetry readings. It appears on the big lipo pack I can get a good 7 to 8 minutes with good use of throtle management.   Will post some picks soon. This plane is a keeper, now to fit decals and pilot. I never finish my planes with scale bits unitl its flow, seems to make any mishaps easier to accept.   Andre

Will post a report and some pics and vid if I can get a willing camera man/lady....   Sunday llooking good for test flight.

Modifications made. - Left of under cart - Added ply block 2/3 between C of G and nose with small silver hook. - Fitted servo covers as will belly land on grass so need some protection for aileron servos. I may modify covers to fit flush to wing and secure with four screws and epoxy servo to wing. - moved the elevator control horns about 30mm from fuse as did not want to bend metal push rods as concerned they would give/flex on higher G turns - have used silicone to secure front ducting to nose and fan, stops vibration and rattles and keeps ducting clean and as smooth as possible. - have fitted ESC behind motor, made wires long enough to allow the motor to ESC wires to fold back on themselves and just tape ESC to wires to secure and fit airfoil shaped guide around wires to LIPO. I have always preferred to keep ESC in ducting very effective cooling behind motor. -Fitted HS85mg for elevator in place of HS65mg I have yet to cut and fit rear ducting, which I will secure with tape after cutting hole for wire guide. So far the AUW is 49oz with the 3000 mah 4S1P lipo and another two ounces with the 3700 4S1P LIPO. This is about 3 to four ounces less than the std set up. I hope to fly this week end and will set the low rates to recommend and increase high rates to 140% of recommended with 35% expo. I have also set up flaperons which I will try at high as very concerned that tip stall will increase as speed slows, but need to slow this jet for a reasonable approach speed at our rather small field with trees. Spec for F86. Motor Size: 15 DF 3200Kv Brushless Motor used Wemotec rotor and adapter in eflite fan housing. Servos: Sub Micro (4 required) & Micro (1 required) used 3 HS 65mg and 1 HS 85 Mg Speed Control : 60-amp brushless used Jeti 70 amp Recommended Battery: 4S 14.8V 3200-3300mAh Li-Po used Loongmax 3000 and 5000 and AGLIPO 3700 May consider using Het2w25 with 60 map ESC and 3S2p 2250 should be good for 24*50amps = 1200 watts peak 1440 watts. Current set up 50 to 60amps at 12v = 600-720 watts. Will bungee launch o will need my lucky helper Mr G. I have decided to fit the ESC behind the motor in the rear ducting to help keep in nice and cool. This has always worked well for me in the past. To help keep it all neat and tidy I designed an L shaped play plate that has a cable guide and airfoil shape to keep the air flow as clean as possible to reduce turbulence in the air flow. i.e. to maximise thrust. Here are a few pics I might modify with a small bit of ply where it meets the fan motor to allow me to secure the plate to the back of the motor as opposed to floating behind and only held in place by tape and the rear ducting and the ECS wires from the motor. This will reduce any stress on the motor wires which may fail in time from fatigue.

Started Build  Modifications so far. Will be leaving of fixed u/c and will bungee off a ramp. Added two 4*6" FG strips to inside bottom of fuse. To give fuse strength for belly landings and to accept balsa and ply tow hook base for metal hook.  Initially fitted the plastic servo covers but have removed and epoxy servo to wing and fitted ply covers.  Instructions are good make it very clear.

Timbo   Agreed, mine will be bungee launch no fixed gear.   If you look at RCGroups site their is a guy in US who has fitted retracts, very nice for tarmac and bowling green lawns but not general grass.   Andre

Stuey   I had and old MIG 29 kit with the EFlite fan and motor. The impelelr balde and adapter let go on the second take off from bungee. The adapter does not take the higher amp set ups, seems to get to hot from motor and expand and lets go, which is not great on take off heading straight for the tree line.   So I bought a wemotec spinnera nd impeller and 4mm grub srew type adapter. Will use thread lock on the grub screws this will be necessary on the Het 2w25 on 6S when rpm hits 55 to 60k range.        

EFlight fan housing Wemofan and spinner and for now the Eflight motor and later Het2w25. ESC will start with Jeti 70amp otpto and later may switch to 60 amp 6s if I can fit two 3S packs.    

Has anyone in UK built this kit?   I have recently acquired and very impressed with quality.   Have vsited other E forums and found its nose heavy with existing C of G and ballons on throttle.   Will post some of my build photos and mods as I go.        

Colin simple   Train-E   Simple and says it all.   André Edited By Andre Rose on 05/11/2009 18:26:26 Edited By Andre Rose on 05/11/2009 18:26:58

I would love to have one. Have flown one at our club and it was good fun on the std setup. I prefer the HOT setup of a Het 2W20 motor and the 4S1P 3700 lipo and Jeti 70 ESC. 700 watts and you have a missile for low amps use a 4.1*4.1 for all out speed a 6*6 but watch the amps. Also you need to add a carbo rod to the wing and best to FG the wing a fuse then you can go wild with this plane.