Insanely Fast Projeti (top speed 165 mph in mild dive) - RC Groups
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This thread is privately moderated by numb_thumb, who may elect to delete unwanted replies.
Sep 12, 2007, 07:29 PM
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Build Log

Insanely Fast Projeti (top speed 165 mph in mild dive)

Flight Summary:

Unless specified otherwise, all flights were flown in a ALF (Almost Level Flight) pattern. As the speed increased I realized it is too risky to fly level end to end.

My definition of ALF is "Level flight for most part except a gentle descent from the starting point of the flight path". ALF keeps the plane in your vision all the time and gives you a greater degree of control at very high speeds.

Click on the miles (mph) for details:

Jun 11, 2009 : Third Generation Projet build pics

Jun 09, 2008 : 5S setup

Apr 28, 2008 : Crazy fast video

Nov 20, 2007 : 168 mph

Oct 30, 2007 : 165 mph

Oct 29, 2007 : 151 mph

Oct 3, 2007 : 148 mph

Sept 25, 2007 : 137 mph

Sept 21, 2007 : 122 mph

Happy flying !!!
Last edited by numb_thumb; Jul 23, 2009 at 12:58 PM.
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Sep 12, 2007, 07:35 PM
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willhaney's Avatar
Insane is right!
Sep 12, 2007, 08:07 PM
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Welcome to Projeti Build Thread


I've started this thread to post my build pictures and techniques I'm planning to use on my second Projeti.

My first Projeti was a superb build, something I was able to take pride for a first build.

I have already built my second Projeti but I'm replicating my build thread to this site from another site.

This second build build will only be better than the first one.

If everything goes as planned there will be few videos as well after the build is complete.

I intend to keep this thread as informative as possible for everyone.

Pls feel free to share your experiences, tips / suggestions in this thread.
Last edited by numb_thumb; Apr 08, 2008 at 05:09 PM.
Sep 12, 2007, 08:10 PM
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Carbon tube installation

Carbon tubes in wings and preparation made for fuselage.
Sep 13, 2007, 12:20 PM
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More carbon Tubes

Carbon tube for the fuselage installed. This triple carbon tube designed worked great for previous Projeti and hence goes in without any mods.

It is difficult explain but one could see how the stress from very high speeds would be distributed by the carbon tubes from the front to back while spreading out sideways along the wings
Sep 13, 2007, 04:53 PM
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Wing covering

The stock wing covering is kind of thick, yet light weight and makes the surface very smooth.

Its a pain to align it correctly even with the recommended method because the covering is one piece per wing and it covers top and bottom.

Couple of beers before covering will certainly help
Sep 13, 2007, 08:26 PM
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The pic shows the rough sketch for the hardware positioning. This is based on the "lessons learned" from the inconclusive post portem on my first Projeti. Since the cockpit of the projeti is limited, this is the best I could do. I need servo extensions and also need to extend the length of the BEC wire to the receiver, but the weight increase is negligible.

I know with this config. the receiver will be hit hard on a nose dive but the aternatives are not that attractive either. May be a sponge before and aft receiver will reduce that possibility.
Sep 13, 2007, 08:27 PM
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Next step is to glass the exposed foam areas that are not covered by the covering
Sep 14, 2007, 02:01 PM
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Custom Motor Mount

I had to come up with a custom design for the motor mount. The stock motor mount is no good for high speed.

The pic shows epoxy coated plywood clamped to follow the contour of the tail area.
Sep 14, 2007, 02:03 PM
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While the epoxy was drying.....

This was a boring but critical work that was pending for a while. While the glue was drying, I took a deep breath and couple of beers and then gathered all my spare servos, opened them, checked for tooth grindings or other problems, replaced suspicious looking gears with new one, re-lubed the gears as needed and tested them.

All my spare servos are now serviced and good to go.

Also I convereted two carbonate gear HS-65 with Metal gears.
Sep 14, 2007, 08:08 PM
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Motor Assembly

Same trusty Motor (inspected and tested) from the fallen projeti goes into this one. Stabs are also attached
Sep 17, 2007, 11:41 AM
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Servos Done

Servos are glued in now.

Two HS-65 Metal Gear
Sep 17, 2007, 11:50 AM
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Motor, esc, receiver and BEC are installed.

Motor, esc, receiver and BEC are installed.

I use specktrum AR6000 receiver paired with a DX7 Tx.

I likethe built in display to modify almost all feature without having to refer the manual.

What I like the most is that it has an inbuilt timer for each model. What a convenience
Sep 17, 2007, 11:55 AM
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Canopy done

I trimmed the canopy latch.

I also cut the rear section of the canopy cover so that the motor will be fully exposed to the passing air. This is very critical to me because I plan to push the motor to exceed 1 HP and hence the more air on the motor the better it is for cooling it down.
Sep 17, 2007, 08:16 PM
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Almost done...

Almost Done...

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