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EF 540t Profile

Old 08-12-2004, 06:47 PM
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Default RE: EF 540t Profile

I have had an HS 81 on my EF Edge for hundreds of flights. I have an hs 81 in several OMP 540 (in the nose) for hundreds and hundreds of flights. If you are only getting a couple of flights out of an Hs 81 there must be another problem. Should not be any torque coming from the throttle. If you are getting more vibration than a HS81 can handle, going to a beefier servo is not solving the problem. It is only getting around it. I would look for the source of the vibration and lessen it.
Old 08-12-2004, 07:46 PM
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Default RE: EF 540t Profile

I have had good luck with 81's. however, I learned a long time ago to only suspend it from it's grommets. if any part of the case touches wood, it will usually ruin the pots quick. it will jitter and jump around. got one on the throttle of both my omp's currently, among other stuff. never broken gear on throttle servos; don't know why they would? using s.t.'s, have nylon arm and mini kwik link to it. maybe binding somewhere? not a big fan of 225's, fragile gearsets and if metal geared are as heavy as standards! like my 425's a lot.
Old 08-12-2004, 11:10 PM
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Default RE: EF 540t Profile

remcl1 - It's been said by many besides myself that the EF motor mount is pretty flimsy and there is a ton of vibration with a Saito 82 (prop is balanced and engine broke in). This vibration toasted the hs81. I replaced it with a 225 and it held up fine but was not accurate. I've since beefed up the engine mount and the vibration is much less (there are photos of my modification on this thread so feel free to go back and see). I now have a higher quality mini servo on it and the whole setup is golden. No problems here but if you can get away with that tiny HS 81 on an EF profile with a Saito 82, more power to you.
Old 08-13-2004, 07:06 AM
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Default RE: EF 540t Profile

I am glad that you solved your problem. My only concern would be that the EF is already nose heavy and I would not want to add additional weight, but if that Harley you have on the nose caused you to beef up the mount so be it. When you are placing a larger than specified engine on the plane, I do not think it is fair to say the mounts are flimsy.

I do not have a Harley on my nose I have the YS 63. My YS 63 (with the supercharger) packs in as much power as other 70 to 80 engines. Vibration should be about the same. I have seen two satio 82 at the field. One is on a EF the other is on a U can do. Both ran great, but I did not notice an extreme amount of vibration. The EF has no mod to the mount. But, that is only one plane and I understand each plane is different with different circumstances. The important thing is your setup is golden. With that plane any golden set up will make your face all teeth.

We are having a Pro-Bro fly-in down here Jan 1,2 come on down and fly in the sunny state of Florida.
Old 08-13-2004, 12:12 PM
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Yep, its good...the ply added about 1/2 oz to the nose but I already moved my battery to the side of the fuse behind the wing to get the CG 1 inch behind the spar. It weights in at 4 1/2 lbs which is still very light. I appreciate your Harley comment...I like YS engines also but I did have a finicky YS 63 in Funtana so I actually like the 82 better despite its vibration. Glad were all having fun with this ARF!
Old 08-13-2004, 12:41 PM
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Default RE: EF 540t Profile

The Ys 63 can be finicky. I have had several and you need to stay on top of them. I just bought the new YS 63S. I have about 100 flights on it. It is a whole new powerhouse. They solved many of the problems that made the old 63 unfriendly to our way of flying. The new 63S is proving that it deserves another look form those that were frustrated with the old one.

Happy flying!!!!!!
Old 08-13-2004, 01:22 PM
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Default RE: EF 540t Profile

Thats good info. It certainly was a runner but if the low end was off just a click, it was a demon. It also liked to get hot very easy...I think the changes they made are helping it to run cooler...

I'll give the S version a try some time. I have an old YS 120 and a newer 140 sport and love them both.
Old 08-13-2004, 05:17 PM
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Default RE: EF 540t Profile

how do you posts photos
Old 08-13-2004, 05:35 PM
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Default RE: EF 540t Profile

I have a 140 as well it is real strong. Here it is.



reaper,
You must hit the post reply button, don't just go to the bottom of the page to post. HIt the upload image at the bottom and follow directions.
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Old 08-13-2004, 05:40 PM
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Default RE: EF 540t Profile

here are the pics. the one is the mod I did to the engine mount and gas tank. I like the 82 but the 225 servo I have no control on rpms. I think I might go to the ys-62 next time around.
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Old 08-13-2004, 05:45 PM
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Default RE: EF 540t Profile

you could take my 540 up under that think and drop me to keep the fighters off ya lol
Old 08-13-2004, 07:56 PM
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Default RE: EF 540t Profile

Here is mine in action with the YS 63. The other one is my OMP with the new awesome YS 63S. I get better RPM control with the 13 X 6 MAS scimitar prop.
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Old 08-13-2004, 11:58 PM
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Default RE: EF 540t Profile

Two strokes suck on this plane it vibrates so bad it having foaming problems 1/2 tank runs is the norm. I have switches to two different 50 size engines both are doing the same thing overheating. I have a header tank helps a little not much. Help Help help. What can I do to fix it without switching to a four stroke.
Old 08-16-2004, 05:39 PM
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remcl1 - Which plane do you like better, the EF or the OMP? Just curious. I've heard really good things about the OMP Edge on here.
Old 08-17-2004, 06:38 AM
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Steve, did you set up your tank per directions using the wood posts. 2 or 4 stroke I would not have the tank touch any wood that is touching the fuse. Make sure you have foam between the tank and the plane. Also make sure you have good quality fuel. Don't rule out other causes of your deadsticks. You may have a hole in your pickup line and when the fuel gets to a certain point you suck air. First try checking your plumbing and isolating your tank. Them move on from there.

aviti, which one do I like better. That is like asking me what do I like better ice cream or cake. They are both good planes and would make anyone glad they got either one. Having said that: the best thing about the EF is you do not have to build it. But by building the OMP you can get it 8 or so OZ lighter. OMP arfs are coming soon. I think the OMP is more stable. I think the EF has more rudder authority. My OMP is personalized and does not look like everyone else's. Some my say the EF looks better with the proffesional scheme. My OMP coverjob is better and is lasting longer. There is no hands down winner. I guess if you force me I will go with the OMP for two reasons. It is not an off the shelf plane. If someone wants one he has to build it or con someone else into it. Do not see many used ones. With the OMP being a little lighter and a thicker wing it slows down better and is more stable in slow high alpha flight.
Old 08-17-2004, 07:56 AM
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Default RE: EF 540t Profile

con someone else into building an omp? I need to try that sometime...
Old 08-17-2004, 08:05 AM
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Default RE: EF 540t Profile

Jeff W, I've been keeping quiet about my 225's and wondering if it was just me having bad luck with them over the last couple of years. That's great advice about practice, repair, and practice.

JW
Old 08-17-2004, 10:07 AM
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Hi I have changed tanks -Tried flue filter in pick up tube -3/4 foam to space out tank not touching any wood I have a header tank fuel lines are new how much will the wood spacers help? I do not have them because of the 3/4 foam. The fuel I have tried power master 10% Omega 10% works the best for now. I love the plane it is my favorite 3 D-flier. I may try some 1/4 plywood on the back side of the engine to help reduce vibration. Saw a post to help the saito 82 from vibrating.
Old 08-17-2004, 11:01 AM
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Default RE: EF 540t Profile

I have an EF that I'm about to drop an AXI 4130 into. I should have about 140 ounces of thrust. I'll be running a 17x10 prop. She should ROCK.
Old 08-17-2004, 11:53 AM
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Default RE: EF 540t Profile

Steve, I'm running an EF Edge with an OS .50 2 stroke and I have no problems with vibration in the fuel tank. I'm not using the balsa sticks that the sent for the fuel tank, only foam in between the tank and plane. The foam should help your tank foaming problems. If that doesn't help then try the usual prop balance routine. There should be no reason that the 2 stroke would give you any problems on this plane.
Old 08-17-2004, 02:36 PM
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Default RE: EF 540t Profile

Don't know steve you should not be foaming if you have foam to isolate the tank.

Billy do you mean the Yak? You would need stilts to put a 17" prop on the EF edge.

Fred, I thought you would like that con remark.
Old 08-17-2004, 03:22 PM
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Well I certainly like the EF Edge but I really wanna try the OMP 47" Edge also. I fly with Dion (from OMP) here in St Louis sometimes...they should have some ARF's coming. I don't mind building but I just don't have time this time of year. I really enjoy a plane that is rock stable in a harrier. The EF is very good but I've flown better. I have a Todd's Models Attitude...balsa profile with a built up wing, brushless motor...that thing has such a light wing loading and so much power. It locks in a harrier and stays that way....its actually too easy because you dont ever have to do anythiong to keep the wings level.
Old 08-17-2004, 05:14 PM
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Thanks Guys. I will try to run my engine with a tower muffler when it gets back from repair service. It may be the moose can muffler getting it hot. I may not have it set far enough back or a can large enough to Handel the heat. My daughter has a nice 8.5 OZ can with some color hair glitter in it. I have has my eye on it for few weeks . I may have to take here to Baskin Robbins for some ice cream help con it off of her.
Old 08-18-2004, 04:41 PM
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Ok I found my problem with my new engine overheating the moose can muffler was to small. I switched to a 8.5 oz ran 3 full tanks with a nice smoke trail even to the end. It had plenty of power to hover at 1/2 throttle. I even found time to switch the low rates to high. Fun Fun Fun [Sm=sunsmiley.gif]
Old 08-19-2004, 12:12 AM
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Default RE: EF 540t Profile

I want to post my video but I have to find someware to host it. I am using the 540t with the saito .82 and all hitec servos. I love it this is the one baby.

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