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08-06-2007 09:20 PM  10 years agoPost 1
jwhitacre

rrKey Veteran

Tarentum,PA- US

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I was going to post this in the "Whose got the good canopies" thread but I figured something as far out in left field needed some history. Well this bird is is actually made of parts from 5 different ships. Most of it is from 3 different BCPP's(what was left of mine, a RR buy, and a local who couldn't fly his) the left-hand tail gearbox is from an old Hummingbird Elite I had collecting dust, the canopy and horizontal stab. are off a T-rex 450X. The paintjob was just spur of the moment and I already had the supplies. The brushless motor in it handles the extra weight with no problem through FFF. For anyone wondering why the rex canopy, I thought the stock canopy looked anemic with the superskids on it. So, what do you guys think?

Setup: BCPP frame, Super Skids, stock servos, Park 370 4100Kv motor, Eflite 20AMP ESC, G-90 gyro, Cellpro 3S 950mAh 25C lipo, Hummingbird Elite tail gearbox, Ikarus Piccolo Pro tail motor, Trex-450X canopy and horizontal stab.

Depleting the world of parts, one crash at a time!!

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08-06-2007 11:14 PM  10 years agoPost 2
tryan02

rrProfessor

Canton, Missouri

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It looks pretty good I just think the stock canopy needs a boost of color. I like the slim dragonfly look even though yours does look more proportional. I always like em a little top heavy.

No Really I am the club President!!!

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08-06-2007 11:19 PM  10 years agoPost 3
jwhitacre

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Tarentum,PA- US

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Thanks tryan02. I agree with the boost of color(stock is so drab) which is why I did the nascar canopy at first

But I just can't seem to leave things alone so this monster was born

Depleting the world of parts, one crash at a time!!

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08-06-2007 11:21 PM  10 years agoPost 4
jwhitacre

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Tarentum,PA- US

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The other thing I like with this is the loads of room up front(no more stuffy nose syndrome)

Depleting the world of parts, one crash at a time!!

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08-07-2007 01:35 AM  10 years agoPost 5
tryan02

rrProfessor

Canton, Missouri

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ever consider making a battery tray? I scooted my stock 800mah lipo as far forward as possible. Moved my supergear battery mounts to the front so the pack sits 1/2" in front of the stock receiver location. I think the nose heavy heli even helped stabilize the flight I could fly backwards slowly 15ft and not touch the tail with the stock 3 & 1 rate gyro.

No Really I am the club President!!!

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08-07-2007 03:16 AM  10 years agoPost 6
jwhitacre

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Tarentum,PA- US

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ever consider making a battery tray?
Hmm....interesting idea. I might have to give this a try. Looks like this build might not be done after all

Depleting the world of parts, one crash at a time!!

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08-08-2007 04:20 AM  10 years agoPost 7
jwhitacre

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Tarentum,PA- US

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I think I found a battery tray

http://www.helidirect.com/product_i...roducts_id=1305
I'm going to order it and I think I have the mounting issue solved. Will have pics up when I get it.

Depleting the world of parts, one crash at a time!!

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08-13-2007 11:33 PM  10 years agoPost 8
jwhitacre

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Tarentum,PA- US

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Disaster strikes

Well I installed the battery tray and moved the gyro up front along with switching to a Futaba 6EX TX/RX and switching to a 9T pinion. I was fine tuning the setup yesterday and while doing 50' punches to test how the tail held the main blades seemed to go out of track BAD all of a sudden about 70' up. I switched back to normal mode but it didn't help and the vibration got worse and then boomstrike. Parts fell everywhere but I managed to recover just about all of it. The damage summed up to most of the rotorhead, super skids, lipo, ESC, RX, and obviously tailboom and mains. Post crash has it narrowed to either a weight in one of the woodies shot out or a pitch link came off. I am going back to the 8t pinion as I had no problems with HS before and definately nothing like this. I'll try to get pics up when I'm done with the rebuild.

Depleting the world of parts, one crash at a time!!

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08-13-2007 11:49 PM  10 years agoPost 9
fenderstrat

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Aston,Pa

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I was thinking before I even got halfway through the post it sounds like a pitch link came off...its always something, just when you get things set up well, DISASTER....that has got to be the worst feeling ever

Compass helis Support Team
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08-13-2007 11:55 PM  10 years agoPost 10
jwhitacre

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Tarentum,PA- US

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Yeah I'm leaning towards the pitch link also. My HS was higher than I've ever had it cuz of the 9t pinion and we all know how good those plastic ball links are.
that has got to be the worst feeling ever
Man you aren't kidding I moped around for an hour when I got home before I could even look at it again to figure out what happened.

Depleting the world of parts, one crash at a time!!

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08-14-2007 12:04 AM  10 years agoPost 11
tryan02

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Canton, Missouri

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lesson learned don't let your balls wear down. I got a worn swash ball I guess I should replace the swash before I fly it again huh.

No Really I am the club President!!!

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08-14-2007 12:12 AM  10 years agoPost 12
jwhitacre

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Tarentum,PA- US

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lesson learned don't let your balls wear down
Yeah that's what I get for building the head out of all used parts and expecting it to handle the higher HS. Well said lesson learned. On a good note though I really liked the battery tray up front(thanks for the idea tryan02) and even though I lost the lipo and RX, the Gyro seems fine. I know if it was still in back the gyro would be screwed.

Depleting the world of parts, one crash at a time!!

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08-14-2007 12:38 AM  10 years agoPost 13
tryan02

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Canton, Missouri

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Am I crazy or did the farther forward battery make the heli more stable especially in backward flight.

No Really I am the club President!!!

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08-14-2007 12:52 AM  10 years agoPost 14
jwhitacre

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Tarentum,PA- US

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No you aren't crazy. I think it helped with stability also. Just before the crash I tried some backwards figure 8s to test your theory and yeah I've NEVER been able to do that with a BCPP before the mod. Well chalk up a HDX-450 battery tray and gyro mount on the mod list for this bird(need bigger canopy to do this without a lot of cutting on the tray) http://www.helidirect.com/product_i...roducts_id=1305 http://www.helidirect.com/product_i...roducts_id=1304

Depleting the world of parts, one crash at a time!!

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08-15-2007 10:05 PM  10 years agoPost 15
jwhitacre

rrKey Veteran

Tarentum,PA- US

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It's back!!


Well here's the newly rebuilt hybrid with a close up of the extended battery tray/gyro mount. I also added more color on the tail section this time around. The nice thing is I didn't have to paint a new canopy since it wasn't on for the tests when it went down. The extended tray is an easy mod and anyone wanting more details pm me. I have to go get some mains tomorrow after work and then test flights this weekend.

Depleting the world of parts, one crash at a time!!

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08-18-2007 03:55 PM  10 years agoPost 16
jwhitacre

rrKey Veteran

Tarentum,PA- US

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I just can't leave this thing alone!!

Well I took it to the flying field this morning and it flew great after a little more tweeking. I still think it's missing something(more like has something extra), the flybar. So I'm tearing the head off and spending the rest of the day doing a little more research(been reading about this subject a lot lately) and taking this baby to the next level(flybarless head). I'll keep you all posted on the evolution of this monster.

Depleting the world of parts, one crash at a time!!

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08-18-2007 04:13 PM  10 years agoPost 17
ttsingram

rrVeteran

Lincoln, Ne

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Let us know what you come up with. I was just about to post a question myself if anyone has done this. I am planning on building a semi-scale Huey with a Blade and was wondering if it would work. Actually, I would just like to remove the paddles and leave the weights on. Mabe I'll try and see how it flys.

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08-18-2007 04:17 PM  10 years agoPost 18
jwhitacre

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Tarentum,PA- US

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I read of someone trying that(forget which website read a lot last night) and it didn't work. I'm going back up to the workshop(attic) and putting it under the knife so hopefully I will have something cooked up by tonight.

Depleting the world of parts, one crash at a time!!

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08-18-2007 04:36 PM  10 years agoPost 19
tryan02

rrProfessor

Canton, Missouri

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I would think it could be done but would be a handful on the light BCPP. I would think heavier blades like plasti or CF would stabilize it a bit more. Any way heres the website I looked at a lot of work though.

http://www.angelfire.com/blues/heli...ollective_2.htm

No Really I am the club President!!!

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08-18-2007 08:20 PM  10 years agoPost 20
ttsingram

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Lincoln, Ne

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Well, just for s's & g's I took my paddles off and left the flybar weights on. I do have two sets of flybar weights and have the links in two holes no the servo horns. I also put the trainging wheels back on just in case. I was suprised. I was able to keep it in a fairly stable hover. As far as moveing around I was in a small room and it is too windy outside so I was not able to try this out. I feel though that it would be too sluggish unless something else was done. Mabe running expo the other direction and returning everything back to stock might help?

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