vicentel's blog - RC Groups
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Posted by vicentel | Nov 15, 2011 @ 12:12 PM | 4,402 Views
Hi Guys,

Sorry it's been so long since I updated this. Anyway, for whatever reason I got it in my head to build a Mig-29 out of depron using the same building techniques I learned from building the jetset44 family of Sukhois 27 and 37. What put it over the edge was a 70mm EDF/50Amp ESC/4 servo combo from HobbyPartz for under $50. I got 2 and have my power system. I decided to design thrust vectoring into the model using the HobbyLobby TV nozzles either from the Su-34 or the F-35, but not sure yet. Right now it's looking like the following:

Wingspan - 36", incorporating a KFm4 airfoil
Motor - 2 x 3000KV
EDF - 2 x 70mm
ESC - 2 x 60amp
Battery - 4S 4000mAh
Servos - 9, 2 x Ail/flaps, 2 x elev, 2x rudd, 3 x TV (roll, ptich, yaw)
Thrust - ~72oz
AUW - 60oz

Here are some images of the initial design. I've started breaking it out into parts but there is still a long way to go before I can get a working prototype.

During this build process I decided to make some modifications to the nacelles. The existing design called for a built-up nacelle that would "box" the EDF in along with the TV nozzles. I would then design supports around the EDF and TV nozzles to hold them in place and well as provide additional foam for sanding the nacelles into their rounded final form.

Now I am playing with a design that would use a single piece of foam that would curve around the EDF and TV nozzle, thus creating the rounded form without sanding. The front intake...Continue Reading
Posted by vicentel | Oct 05, 2011 @ 05:40 PM | 4,266 Views
Growing up I was a big fan of Robotech, specifically the Macross Saga. This series introduced to the world the concept of a transforming giant robot. I believe it even pre-dates the Transformers saga but not Gundam. Anyway I was intrigued by the jet design because it so closely resembled the F-14 Tomcat. Since my foray into foam and EDFs I've always wanted to design an EDF conversion of the MDC F-14 (Maybz's design). Anyway I'm finally getting around to doing it. My original desires are to have a twin EDF (either 64mm or 55mm) parkjet with thrust vectoring (on the roll and pitch). So far I've got a preliminary Sketchup design, electronics and some specs:

1. Wingspan: full sweep-28", full forward - 40"
2. EDF - leaning on 2x 55mm EDF
3. ESC - 2x 30Amp ESC with BEC
4. Servos - 2x Elevon/TV, 1 Rudder, 1 swingwing
5. Channels - 5 : Elevon/TV, Rudder, throttle, swingwing
6. AUW - 30-36 oz
7. Static thrust - 40oz
8. Battery - 3S 2200-2650mAh 30C

I did have to make a compromise on the elevator. The actual veritech fighter (VF-0B Phoenix) do not have them but use the vectored thrust instead. Since this is experimental for me I plan on adding them in to get a baseline and gradually remove them as I get more familiar with the aircraft. Also, there is no point in reinventing the wheel so I'm going to be incorporating the MDC swingwing mechanism in this plane as well. Here are some initial mock ups.

Posted by vicentel | Sep 07, 2011 @ 02:30 PM | 6,143 Views
This was originally designed by Maybz to be both a pusher prop or edf. Unfortunately the edf version of this model was INCREDIBLY unstable and no one could really get it to fly right, at least from what I could gather from the forums (i.e. rcgroups).

Anyway with a lot of trial and error and a lot of modification, I did manage to get a working/flying test mule using...

2x55mm EDF
2x 4300KV motors
2x 30amp ESC
1x 2200 3S 25C battery
4x 8gm servos

I did have to stretch the wingspan to 28" (from 26"), move the CG forward and enlarge the vertical stabs by 20%. This setup gives 32oz static thrust on a model that weighs about 27-30oz.

YF-23 Flights (2 min 3 sec)
...Continue Reading
Posted by vicentel | Sep 07, 2011 @ 01:00 PM | 6,662 Views
Hey Guys,

I decided to make the Su-27 variant using Steve's design, only this guessed it, I'm converting it to twin EDFs Here are the specs

wingspan: 30"
edf: 2x 55mm EDFs (static thrust 32oz)
motor: 2x 4300KV
ESC: 2x 30Amp
Battery: 3S 2200-2600 mAh 30C
Servos: 2-elevon mix, 1-rudder
AUW - 28.5 oz
Wing loading - 17oz/sq ft

I will not be implementing at thrust vectoring system on this plane. I want to save as much weight as possible and keep the wing loading as low as possible.

Suhumate Su-27 55mm EDf Conversion (1 min 59 sec)

Here is a video with it painted. I know it starts off as the unpainted version but trust me, you'll want to continue watching the video.

Shumate Su-27 55mm EDF conversion (2 min 54 sec)
...Continue Reading
Posted by vicentel | Sep 07, 2011 @ 12:23 PM | 6,491 Views
If you don't already know I really love the Su-37 design. This particular model has been a little over a year in the making. It started life as a profile edf based on tomhe (twin 50mm edfs) Su-37 profile pusher prop design. I then added the jetset44 3D nose. That model had a very simple thrust vectoring system (TV) using depron plates. That design worked pretty well as a park flyer but was lacking performance.

SU-37 TV System (0 min 23 sec)

Su-37 More Flight Testing with TV (2 min 41 sec)
...Continue Reading