I am starting to build a PQHOR to get me into this 3d thing before I build my OMP 540. I have seen so many versions (Length, wingspan, etc.) that I don't know which one to make. Are they all pretty much the same? Should I build a .40 size or .30? I already have the U channel (6 bucks for 40 inches) and need the coro. Thanks.

okay, here is what I am going to do. 32" channel, 36" wing, 5" cutting board thing, 4" tapered to 2 1/2" ailerons, 4" rudder and 3" elevator. rudder and elevators will be counterbalanced. does a GMS .47 sound good for this plane, or another engine. This is a "Budget" plane so I can't have any fancy stuff.

I am thinking about a MDS .48 instead of the GMS. I have an MDS on my trainer and it runs flawlessly. The MDS is the same price I think and is not made in China (I hate things that are made in china)

well i can tell you that the GMS .47 is one hell of an engine(probably more powerful than the FX),I would go with the GMS,have had both and the GMS outperforms and outlasts the MDS by a mile.I have one installed in my Qhor,:
Specs:
32" wingspan
32"channel
ailerons ,rudder,andelevator just like you suggested(counterbalandes and about the same dimmensions)
I initially built mine with a 35" wing,but after 60 crashes or so it was pretty beat up)so I buit the second wing with the 32" wingspan,I like it better.One thing I did notice,they perform better with the CG about 3/4" behind the fold with the tank full.Hovers,harriers,flatspins,waterfalls,spins,el evators,blenders,
,IT WILL DO ANYTHING and it hovers like a dream,THE BEST 3D TRAINER,BAR NONE.,AND MOST IMPORTANTLY IT IS VIRTUALLY INDISTRUCTIBLE.Gotta love 'em
Thanks Tatoo

Personally I would lose the counterbalances. I've heard of a lot of people CB keep breaking off, plus the 4" surfaces are way more than enough to do all the 3-d it can do. If you want better waterfalls, flatspins, ect than stay with the 32" long channel. If you want more stable harriers, hovers, t-rolls then extend the channel to 36". Check out my video. It has a 36" wingspan with a 36" inch piece of channel. From nose to tail it is 50" Engine is a .46fx and surfaces are all 4" with no taper and no counterbalances.

http://www.riversedgerc.com/communit...download&cid=4

It is about the 6th on down on that page titled, Jason Catches his plane.

Jason

I've seen your video and its just amazing, Jason! You really know how to move the sticks How do you do it to move your QHOR in a circle while hovering (from second 13th to 17th, +-)?
By the way, I've also made mine longer (95 cm fuse), tih 3.5" ailerons and 4-5" elevator, and a 40 fx. What do you think? Any ideas for a prop (10-4, 11-4, 11-3)?

After watching Flyboone's video I built the same plane.

This is the easiest 3D trainer out there.

Second day out:

Harrier figure 8's
Low torque rolls
Tail touches facing canopy and belly
4 crashes from 3 ft and no dammage

Keep this plane a secret, it's making me look too good !!!!!!

We should be private messaging

I also started one after watching Jason's video. I too made mine like Jason's. I'm putting a OS 46SF (precursor to the FX) on mine. All is going fine with the construction, but it seems real heavy. We'll see how it comes out when it's done, but I am afraid I'm going to be looking at 5 LBS.....

Oh, I guess I got a deal on the U channel. I paid $3.85 for 4 feet.

I have all standard servos except for mini on throttle and a standard 600ma nicad pack. Mine is the 36" version and weighs 4.5 lbs dry. The Tower .46 will yank it out of a hover with authority.

Flys like a trainer, 3D's like a 40%.

Ehem sorry for leaving the topic, here's what I'd do Blackhawk:

- 36" wingspan wing (yoou can always make it shorter)
- 3.5 to 4" ailerons NON TAPPERED. This is only done for esthetics or to avoid flutter, and even in this case you don't need to cut so much.
- Fuse, already answered by flyboone.
- No counterbalances. They look cool but coroplast is not the material to make them, they will bend soon unless you run a carbon rod through them. Its better to put a 4" elevator.
- Any of your engines should be fine, provided you put a tractor prop on them.

If I want a 36" fuse I will have to make another trip to OSH, I cut it to 32" last night. Would it be worth it for hovering, torquing, and harriering to get a new one and make it 36"? I want to do those maneuvers on this plane the most.

I've been reading the posts about QHOR and QHOR modifications, but not flown by miself (I must study for an important examination ), to try to make an improved qhor based on the experince of other users and yes, longer fuse, better harriers and trolls, but worse blenders. It just depens on what you look for; mine is 37.4", others prefer between 33 and 36", but I'll probably cut 2 inches depending on how it flies.
So I'd buy another fuse. Mine is not squared for these reasons: too much weight, difficult to install servos and profile, and the structural force is lost when you do holes on it to put the equipment. It is a 20x24x20 mm (0.8x1x0.8") U channel, and I'll put my hands on the fire it doesn't bend (did some "manual" tests). I started making the .25 qhor and felt disappointed when I saw all the big engines and mods that were, so I built another one (after all, they're cheap....) for my .4 fx, built more less by the plans, with very slight tapper, 3.5" ailerons, longer fuse and horner tips on the stab. I also put some pvc tape on the leading edges, hope it does something noticeable to reduce drag. I think that's the reason that make qhors so much "brick like" when deadstick; too much drag, and inefficient wing design (in terms of soaring, longer and thinner is better).

What I mean is I have already cut the u channel to 32", would it be that much harder to hover nd harier with this length fuse, if not I will just buy some more and have two fuses if one bends too far.

32 is great. I have a 36" wing and 32 fuse. Counter balanced tail and 4" ailr. No taper. os 46fx. St servos. I made a 39 and 36 fuse and went back to the 32. Really like it in the wind.

In short 32 will work great for all the 3-D you want.

Dan

In a side note I switched to piano landing gear and love IT. Never go back to AL

Yeah, it should bend less and its faster and stronger overall but, how do you fix it?

okay, Does anyone else think that I should keep this one, or do you think I should get a new one?

I'd say try what you got. It will harrier and hover fine. If you don't like it, it only takes what 20-30 minutes tops to put a longer fuse on. Personally I like to have two Pqhors. One has a 32" wing and fuse and does great 3-D stuff. My big one with 36" wing and fuse is by far waaaay more stable in harrier, hover, and t-roll.


JCaste- Thanks for the compliments. I'm not sure what your asking about the hovering in a circle thing? Also I'm not sure what prop would be best on a 40fx. Hope you like have fun with yours.

Jason

I am going to use a 36'' wing, but I have cut the fuse to 32 so I will go with that. Coro in my area is expensive! for two sheets of 4 mil 24x36 it is 13 bucks, it is 7 bucks off of the internet with shipping. What is the deal? One sign shop said they would give me a 4'x8' sheet for 18 dollars. Why are those small amounts so expensive? At harbor they are 1.22. that is too much of a price jump to be reasonable. Are they just charging a lot because they are not doing anything with it or what?

BLACKHAWK3D
Look in the yellow pages for"plastic" most of the places that sell plastic (ie) plexglass,nylon ,sell coro.I buy coro. here in Redding for $12 for colored &$11. for white. All 4'x8'. I get mine at Machine Plastic, you might see if there is one down there.
art43

That's right flyboone, the "hovering in a circle thing"
In your video it begins after the 12th second or so and yes, its like hovering but while making a circle around a external axis.
Is there any chance of pinwheeling a PQHOR? I have no idea why they should KEdge so badly. I'll put some covers on the tips on the wing, lets see if that makes something (at least its improves esthetics)

Well...... I wish I could say it was on purpose but really it just fell off to one side and I was correcting to keep it verticle and it just does the circle thing. I've done it several times and I really think it looks cool. I can almost do it on purpose now, but in the video is was pure acident. I've never seen one do a pinwheel yet, I'll have to try next time out. I think Kevin is working on a mid wing Pqhor to see if it will KE or not.

Jason