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extreme flight RC edge 540

Old 05-26-2004, 01:32 PM
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Default RE: extreme flight RC edge 540

I flew Dave's EF Edge with the Saito 100...... No offence Dave, but it seemed pretty squirely to me.... The motor on that bird had SOOO much power, it was hard to find the sweet spot in a hover... And the torque was hard to counter act when you didn't want it.... It didn't fly heavy, which surprised me... But the power was hard to regulate compared to something with a more reasonable power source....

I'm definitely NOT a fan of GROSSLY overpowering these birds... I had a .72 on mine originally.. it had plenty of power, but I didn't like the way it throttled... I put a brand spaking new .82 on it... and I STILL don't like the way it throttles... Vibrates like crazy in the 1/4 - 1/2 throttle range... I sent in the .72 to Horizon and got it back the other day with a new piston and bearing... I'm gonna put the .72 back on it soon to see how it does.....
Old 05-26-2004, 02:02 PM
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Default RE: extreme flight RC edge 540

I already have the 72 ordered. Believe me, though....I seriously thought about the 91 before I ordered, but I had the concerns that Paul just outlines: Finding the sweet spot without constantly moving the throttle a click or 2, and fighting all that torque. My 46 is doing OK, has plenty of power to hover, but I'm looking for a little extra kick to help me when I start falling. Everybody tells me the Saito 72 would be the ticket for that.

I'm probably going to go with the Zinger 13x4 for good spoolup. I know some run the 14x4, but they do admit spoolup is slower. I can't stand waiting for the windup, that's why I run 11x4 or 11.5x4 props on my 2 strokes.
Old 05-27-2004, 10:29 AM
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Default RE: extreme flight RC edge 540

Well, I thought the Saito 72 was comming, but the deal fell through. I thought I bought it here on RCU marketplace, but the guy sent the accepted offer notice to the wrong guy (me). He ment it for another dude, so I have a few questions.

1) For those of you running the Saito 91's on the profiles, how nose heavy did it make them and how much weight did you add to the tail to balance. I added some weight to the tail even with my 46 2 stroke on it.
2) is the torque really hard to overcome?
3) What props are you running?

I'm not thinking of the 100, but maybe the 91.
Old 05-27-2004, 10:34 AM
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Default RE: extreme flight RC edge 540

Gordo should be able to head you in the right direction on the 91. I'm sure there are others using the 91 as well, but he is the first one that comes to mind.
Old 05-27-2004, 03:41 PM
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Default RE: extreme flight RC edge 540

I know Sloan and another buddy both have the battery pack under the stab. After that, all that's needed is minor tweaking. The 91 and 100 are essentially the same weight so it doesn't make a difference which one you use. My back-up EF Edge may get the 91 saito out of my UCD46 if my original lasts much longer.
Later,,,Matt
Old 05-27-2004, 06:01 PM
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Default RE: extreme flight RC edge 540

Kevin,

Care to share more info on that mod'd prop? Just mounted a Webra on mine to.
Old 05-28-2004, 09:23 AM
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Default RE: extreme flight RC edge 540

Hers is a nice pic of 12 of them together

http://www.ucrcs.com/20040522_Memphis_06.jpg
Old 05-28-2004, 12:51 PM
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Default RE: extreme flight RC edge 540

Good observation Paul. Mike Burgess has a .72 on his and has the same problem with the sweet spot. I know this won't be a popular statement but I believe it to be a 4-Stroke thang. You can only get so much response from a motor that only fires on every other revolution.

Rob

ORIGINAL: PaulSwany

I flew Dave's EF Edge with the Saito 100...... No offence Dave, but it seemed pretty squirely to me.... The motor on that bird had SOOO much power, it was hard to find the sweet spot in a hover... And the torque was hard to counter act when you didn't want it.... It didn't fly heavy, which surprised me... But the power was hard to regulate compared to something with a more reasonable power source....

I'm definitely NOT a fan of GROSSLY overpowering these birds... I had a .72 on mine originally.. it had plenty of power, but I didn't like the way it throttled... I put a brand spaking new .82 on it... and I STILL don't like the way it throttles... Vibrates like crazy in the 1/4 - 1/2 throttle range... I sent in the .72 to Horizon and got it back the other day with a new piston and bearing... I'm gonna put the .72 back on it soon to see how it does.....
Old 05-28-2004, 11:53 PM
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Default RE: extreme flight RC edge 540

Cool pic Skythumbs. Do you ever get them crossed up when flying? I am the only one at my club with a EF edge 540. [sm=sunsmiley.gif].
Old 06-01-2004, 09:47 AM
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Default RE: extreme flight RC edge 540

Well, after a PM or 2 with Gorod I ordered the Saito 91. He sold me after he said it was like flying an electric foamy on steroids.

I'll try to get some pics, mounting and CG details after I get the motor.
Old 06-01-2004, 10:35 AM
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Default RE: extreme flight RC edge 540

ORIGINAL: Quicker

Well, after a PM or 2 with Gorod I ordered the Saito 91.

I like that ....."GOROD", was'nt that one of the creek gods?
Old 06-01-2004, 10:42 AM
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Default RE: extreme flight RC edge 540

Well, I've never met him face-to-face, but I'm sure he's like most guys I know and we better not let this get to his head!!

Oh, the troubles a slip of the finger can cause!
Old 06-01-2004, 10:46 AM
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Default RE: extreme flight RC edge 540

well, I did a google image search on GOROD. Here is what I found. Would this be Gordo?
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Old 06-01-2004, 10:51 AM
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Default RE: extreme flight RC edge 540

hey guys, will mini servos fit the EF Edge fine, or is it cut for standard size servos and you have to shim the hole ? I know I have one in the box, but am too lazy to look [X(][>:]
Old 06-01-2004, 10:53 AM
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Default RE: extreme flight RC edge 540

It's cut for standard size servo's....
Old 06-01-2004, 01:12 PM
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Default RE: extreme flight RC edge 540

RSands - The modified prop that I am running is according to 3Dreaming specs. I am using his technique, though I do not spend the time to thin the blades as much as he does. I mark 1 in. back from the end on the trailing edge. I then draw a line and sand that portion off. I then radius it, and thin the tips. I balance the prop before starting to modify it, and balance it in between each modification. Once you get use to it, it only takes me about 10 plus / minus minutes to modify a prop.

I test flew my Extreme Flight Edge this past weekend. I love the plane, though mine is extremely tail heavy [X(] It has nothing to do with the original aircraft, it was my modifications that got me I changed the tail wheel assembly, and installed MPI870 servos in the tail. I am also running a standard tuned pipe on my light Webra 50. I initially put the Webra halfway on the mounting rails, and the CG was well over 2 in. behind the spar. When I flipped the plane over inverted, it automatically did an outside loop that was less than 6 ft. radius! [X(] I made some mods and got the CG close to 1" behind the spar, but had to add a brass spinner nut to get there (that SUX!). I guess that I am going to go with some lighter digital servos in the tail to get the weight down to see if I can loose the brass spinner night. Other than my screw ups <LOL> that effected the weight - I love the aircraft!
Kevin
Old 06-01-2004, 06:15 PM
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Default RE: extreme flight RC edge 540

Thanks Kevin, I think I got it. I'm using the cheap set-up, 425BB's on a 2100mAh 6v pack. Motor's centered on the rail and CG is ~ 1 1/4" behind the spar. Don't know the weight with the Webra, but when I had the YS on it, everything but fuel weighed 4.4 lbs.
Old 06-04-2004, 01:01 PM
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Default RE: extreme flight RC edge 540

mine will be maiden tomorrow with a 46fx and a Cg one inch behind the spar. It's a long time that I didn't flown a pure 3D profile and I think I will have fun.
Old 06-04-2004, 04:06 PM
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Default RE: extreme flight RC edge 540

What is the balance point on a GP CG machine from the front of the leading edge in inches ? I see posts on 1 " behind the spar which I thought I had , but damm I had a wild first flight being very tail heavy at that location, unless of course I was off.
Old 06-04-2004, 04:31 PM
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Default RE: extreme flight RC edge 540

mmmmmm
what I do to balance profiles is to simply drill a hole trough the fuse to put a small rope

then I hang the plane

easy........
Old 06-04-2004, 11:06 PM
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Default RE: extreme flight RC edge 540

balance the airplane per the intructions then fly it and trim for level flight roll the plane inverted if it take much stick to hold level flight move the cg back till you get to a point were it takes little to no stick to hold inverted flight and the plane will fly great
Old 06-06-2004, 04:34 PM
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Default RE: extreme flight RC edge 540

5 flights today with my edge 540. I was one inch behind the spar and found the plane to be fine.......

I finaly went with a OS 50SX

I love that plane, he is nearly flying as fine as my prosis1 burrito
Old 06-06-2004, 08:35 PM
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Default RE: extreme flight RC edge 540

Maiden mine yesterday......I have an 46fx and for some odd reason im nose heavy. Battery pack in the back and reciever in the back and Im barely right past the main spar?? How in the world are these guys running the four strokes?
Old 06-06-2004, 11:20 PM
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Default RE: extreme flight RC edge 540

that's strange, me with a 50SX (stock muffler) and the engine max backward I am one inche behind the spar with no lead
Old 06-06-2004, 11:45 PM
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Default RE: extreme flight RC edge 540

Another thing I noticed mine needed was more right thrust. I added washers I hope it will sove that prob. to.

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