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Posted by Old_Pilot | Dec 01, 2016 @ 07:13 AM | 1,108 Views
Had to replace a combat wing after a mid air...we hit so hard that my motor was broken...got her back to the bench just in time for her to burst into flames.....so here's the new one

Flight Ready: GForce 3542 1250 kV, Tower Pro MG90S, Lemon 6 channel, 50 AMP ESC, 2600 mah 30C 4S.....gonna test fly her with a 9x4.5.....combat with a 9x6.....
Posted by Old_Pilot | Nov 25, 2016 @ 11:49 AM | 991 Views
I found (4) 70mm fans/motors in the bottom drawer...and decided it was time for another twin....this time I buried the fans in the wing plates.....haven't started on her yet, so I haven't found the "uh-oohs"..but I'll build her next week
Posted by Old_Pilot | Nov 21, 2016 @ 08:28 AM | 905 Views
L 19 Maiden (5 min 36 sec)

Posted by Old_Pilot | Nov 16, 2016 @ 04:34 PM | 1,568 Views
Just keeping busy.......My first attempt at this little girl was a disaster. It ended up with 6 degrees of "UP" built in to the airframe because I failed to notice the decalage in addition to the incidence of the original FF design......So I found the original full scale drawings of the L-19 and scaled it down to...Continue Reading
Posted by Old_Pilot | Nov 13, 2016 @ 08:40 AM | 826 Views
This morning's discovery.......a trimmed McAlister cup is the perfect efflux cone for a 90 mm fan
Posted by Old_Pilot | Nov 10, 2016 @ 06:27 PM | 1,581 Views
just for fun

Delta Combat (2 min 34 sec)

Posted by Old_Pilot | Nov 05, 2016 @ 03:52 PM | 1,459 Views
Gonna take the original 12" WS, rubber powered, free flight Frog Mk-4 Interceptor and turn her into a 60" 5 channel RC.......with one major change....I'm going to build her as a parasol....the shoulder wing version has already been done......

This will serve as the build log for my entry into BBCC 8......based on these drawings.....

I added the history behind the Mk-IV........
Posted by Old_Pilot | Aug 18, 2016 @ 07:22 PM | 2,027 Views
Y'all ain't gonna believe this......go sit down.....
Dassault Systemes' drafting software (Draftsight) has asked me to come to Waltham MA to film the construction of 2 of my flat jets (a 70 and a 90) to be used as a presentation of the capabilities of Draftsight at SolidWorks World conference in L.A. in Feb......I've been beta testing some of their stuff over the last year.....that's another story.....

Anyway, I was sending them the drawings for the StealthStream (with the 3D), and one thing led to another...it's a hoot.......all expenses paid.... I didn't post this anywhere until it was finalized.

Well, it's been finalized ! I'm about as excited as a 5 year old on Christmas morning......

They originally offered to fly my wife and I to L.A. for the SWW conference in Feb. But I countered with an offer to come to Waltham to build and fly the aircraft for their marketing purposes.
And they sent me this today..full 3D solid model of the StealthStream....using SolidWorks.

They went nuts when they saw the last 90mm take to the air.
..and all of this happened because of a couple of pieces of foam board and a fricking coffee cup.........LMAO
Posted by Old_Pilot | Aug 18, 2016 @ 11:49 AM | 1,697 Views
Flight Ready.......total build time 48 hours....from scratch

Spec's

GForce 4250 900 kV motor
65A ESC
4000 mah 40C 4S
Lemon 6-channel receiver
11x7 prop
TowerPro MG90s aileron servos
Tower Pro MG 946R rudder/elevator servos
12% symmetrical Joukowski airfoil
light weight construction.....original had a lot of 1/4".....this one is mostly 3/16 and 1/8
maple spar caps with balsa webs (I-beam spar)
Posted by Old_Pilot | Aug 15, 2016 @ 07:49 AM | 1,461 Views
Stuck a Mobius mini cam on the bottom of the StealthStream 10X...for your amusement

SS10X In flight (1 min 56 sec)

Posted by Old_Pilot | Jul 24, 2016 @ 06:32 PM | 2,419 Views
I've been tweaking this airframe for almost a year.....fans, motors, servos, ESC, airfoil, and everything else......I think I'm gonna stop messing with it

StealthStream10X (2 min 57 sec)

Posted by Old_Pilot | Jul 05, 2016 @ 11:29 AM | 5,774 Views
Here's my last attempt to make the 105 fly with an internal fan.
36" ws, 48" OAL, 90mm Freewing 6 bladed fan, 1850 Kv motor, 100 amp ESC, 9 gram servos, 54 oz AUW, 104 oz thrust, 86% efflux cone, Elmer's board, KFM-2 50%...Continue Reading
Posted by Old_Pilot | Jun 23, 2016 @ 06:13 PM | 1,707 Views
I've decide to try this airframe one more time, this time with (2) 70mm fans and scaled up to a 40" wing
Posted by Old_Pilot | May 30, 2016 @ 09:37 PM | 2,377 Views
Gotta share this.....I've lost planes to mechanical failure, signal loss, bug strikes, and dumb thumbs......never had one catch fire in mid air until today...........uuuhhh.......it got hot....but the smoke trail was spectacular ! it looked like I'd been shot down by a missile....ESC, wiring, and receiver are a total loss.....haven't tested the EDF motor

Had over 100 flights on this airframe..guess I pushed her too hard for too long
Posted by Old_Pilot | May 26, 2016 @ 06:46 PM | 2,541 Views
As I suspected.....this POS fan won't push it across the ground....it may fly the aircraft on a hand or bungee launch......I have all kind of bad words for this thing.......the 6 blade plastic version will pull a similar sized flat jet right out of my hand and launch from the ground easily.....DAMMIT!

What a complete waste of money ! It won't happen again
Posted by Old_Pilot | May 26, 2016 @ 07:24 AM | 2,829 Views
I was all set to start assembling my Avro 707A entry for BBCC 7 when the fan and motor arrived......the powerplant was not what I expected....I thought I'd ordered the 90 mm Freewing 6 blade with a plastic housing, but received the 12 blade version with an aluminum housing.....much much heavier than I anticipated. So I decided to test the fan in a $10 foamie rather than a $100 balsa scratch build....to which I scaled up my simplified version of the Avro CF-105 Arrow to accept a 90 mm fan internal of the fuselage.....she'll maiden sometime soon.

CF-105 Arrow (simplified)
90 mm Freewing 12 blade with aluminum housing
Freewing 3748-1450 kv brushless
125% free inlet air - 85% FSA efflux
100 amp ESC with a 5A BEC
3700 mah 40 C 6S
TowerPro MG946r Servos
36" WS x 46 OAL 50% KFM-2 airfoil
Elmer's board with CF spars
60 oz all up - 112 oz (supposedly) thrust
Lemon full range 6 channel Rx
Posted by Old_Pilot | May 05, 2016 @ 10:04 AM | 3,815 Views
Maiden tomorrow......winds are supposed to be light and variable.......

Maiden flight

1951 Ringmaster C/L conversion to electric RC (3 min 11 sec)