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HomeAircraftHelicopterHIROBOOther › Building a Freya EVO w/ YS91
10-15-2005 12:56 AM  13 years agoPost 1
dgshaffer

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New Jersey

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I'm looking to hear from someone that has this setup. I'd like to see how you ran your fuel plumbing. With only 2 taps on the tank, where did you put the pressure relief?

On my 90SE, I pressureized through the bottom of the tank and used the second tap on the top to allow me to refuel and relieve pressure in the system by way of a short length of tubing and a clamp..

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10-15-2005 01:07 AM  13 years agoPost 2
Kinger

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Granville, OH

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I've seen it done both ways. Pressure relief can either be on the top nipple (the one that usually runs to a muffler) or it can be done on the vent line that's right next to the clunk line on the cap.

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10-15-2005 01:32 AM  13 years agoPost 3
dgshaffer

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New Jersey

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Thanks Kinger.

You know I was so fixated on the plug with the two tubes going through it I never even noticed that the tank had the third one moulded into the top of it.

This is just the first of many stupid questions I'll probably post with this being my first Freya. At least I got that one out there

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10-15-2005 01:34 AM  13 years agoPost 4
rkeith2

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Norco, CA

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Lines
Mine came with 2 lines into the tank as well as the nipple in the top rear


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10-15-2005 01:40 AM  13 years agoPost 5
dgshaffer

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New Jersey

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I'm a little slow on the uptake. It took a second look to notice that nipple on the top of the tank. DOH!!!

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10-16-2005 04:03 AM  13 years agoPost 6
MRC-Hirobo

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Edison, NJ

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Follow the directions. LOL

The bottom line of the plug is placed at a 6:00 position per the diagram. This is the fuel supply line to the carb.

The other plug at either the 10:00 or 2:00 position I use to fill the tank. The lower frame has a neat little access hole for this line.

The upper nipple gets the pressure tap from the back of the motor.

Don't puch through the third hole in the stopper.

TTYL

Jeff

MRC Host

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10-16-2005 10:45 AM  13 years agoPost 7
dgshaffer

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New Jersey

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I'm up to the electronic wiring. Trying to clean up all the wires. I decided to install my GV-1 so with the controller for that and the one for the 601, it's puzzeling as where to put everything.

I took a run out to my shop to dial indicate the clutch and fan assembly. It came into spec pretty easy.

I may have it fired up today but with this wind I'll only hover it to set my mechanical trim.

This is a great kit to build Jeff. The instructions were right on the money!

One issue I found was the tourque lever for the collective linkage. Where it swings inbetween the inner and outer frame halves. There is a clearance issue. I had to do a bit of cleaning up to get it to rotate smoothly without rubbing against the inside of the outer frame half. Seems as though that metal standoff could be a bit shorter or that portion of the frame should be cleared out for the lever rotation.

The part I'm referring to is #0414-395 on page 24 of the instructions. The logo is on the inside as per the instructions, but It looked symetrical to me.

Don

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10-16-2005 02:26 PM  13 years agoPost 8
dgshaffer

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New Jersey

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I'm setting my mechanical pitch parameters and noticing something unusual.

Setting the ball links at the perscribed distance on the aeleron and elevator I was only able to get +-4* pitch at 0* collective.

I'm using the large servo wheels all around so I moved the balls out to the outermos diameter and was able to acheive +-6* which is what I wanted.

I have the balls on the middle hole on the main blade grips but should I have moved those in instead? I'm also had to move the ball on the collective arm out to the farthest hole to eliminate binding on the collective torque arm as well as file the inside of the link rod end at the torque arm.

Anyone see this when assembling thier Freya EVO?

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10-16-2005 07:53 PM  13 years agoPost 9
dgshaffer

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New Jersey

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Well it's complete!

About 14 hours from the box to the air. The YS91 out of my now sold Raptor SE, fired right up.

Pitch and throttle curves working as I had hoped. Mechanical trim damn near on the money including the tail in rate mode. What a pleasure it was building this thing. Instruction were clear as a bell, numbered packages had just what was required for each step.

I didn't take any chances with the run out on the fan and clutch and dial indicated them but they weren't off by enough that would have caused a vibration issue. At least now I know the assembly is within .002"

I couldn't do much with it today because of the gusty wind here in the northeast. I just fired it up in the back yard and pounded the collective and other servos to make sure everything was solid.

Three clicks rear elevator and two clicks on the right aileron and it was sitting two feet off the ground steady as a rock. I can't wait to get this thing out in the open to pound on it for a while.

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10-16-2005 09:11 PM  13 years agoPost 10
Kinger

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Granville, OH

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Nice looking machine!

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10-16-2005 11:17 PM  13 years agoPost 11
HawkNoob

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Pa

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Looks great! Have fun with it!

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10-16-2005 11:25 PM  13 years agoPost 12
dgshaffer

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New Jersey

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Thanks guys!

I have a little work yet to do as I want to reconfigure the link ball locations so that I can move the balls back in on the servo wheels and possably get a little more speed from the servos.

It was a fun build though.

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10-16-2005 11:54 PM  13 years agoPost 13
mrrc

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Huntingdon Valley, PA

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i just got done with one they fly great

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10-17-2005 01:23 AM  13 years agoPost 14
rdalcanto

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Salt Lake City, UT

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For the collective lever -
I checked the manual and yours is backwards. The side with no logo has the two balls (page 23). The two balls face in on page 24. Therefore logo should face out.

Rick

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10-17-2005 02:56 AM  13 years agoPost 15
dgshaffer

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New Jersey

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Found it!. Thanks. I also sent you a pm.

Don

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10-17-2005 03:40 AM  13 years agoPost 16
Atlas321

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Bridgewater, New Jersey

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Looks good Don...........I went over to the Vo-Tech field today and ran a tank through the Freya...........held pretty good in the wind.....but those 35mph + gusts were tough. But it came home in one piece. Hopefully this week will be a little calmer. Best of luck with the new toy........I am currently looking at the Pgasser from Ricks looks like a good deal and gas is so cheap......we'll see what happens........Joe

AMA # 760459 Hyper Evo 50 / Trex SE

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10-17-2005 10:20 AM  13 years agoPost 17
dgshaffer

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New Jersey

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Wow Joe, that sounds like a nice project. I can't wait to see that fly. Those things are too big for my little Jetta. I'd have to buy a SUV or minivan first.

At least it wasn't raining. I was out in the yard and the wind was kicking. Glad to hear you made it home in one piece.

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10-17-2005 03:07 PM  13 years agoPost 18
yapjy

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Singapore

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dgshaffer, you might want to check that the paddles are horizontal when the main blade pitch is at 0 degree. If you can get that, you might even go without trims on the elevator and ailerion.

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10-18-2005 03:29 AM  13 years agoPost 19
dgshaffer

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New Jersey

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I just finished rebuilding my servo control linkage per rdalcanto's post: Best 3D settings for EVO 90 head.

After exchanging a couple of PM's with him I also moved the ball connectors outward on the elevator and aileron servo wheels from 10mm to 12.5mm. This gave me the +-10* collective and +-6* cyclic I was looking for without having to increase my ATV limits beyond 100%. Prior to this, the only way to get these were at 150% ATV.

I’ve also ordered the proper gearing to get my RPM into the higher range since the 7.9:1 is a bit slow.

I can’t wait to try this heli out at the field. From what I’m seeing in the small area at home, the power and responsiveness is impressive.

Now to start on my second EVO50!

Thanks to all of you that have commented on my project. Your advice both here and by way of PM has really been helpful.

Don

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10-18-2005 04:39 AM  13 years agoPost 20
HawkNoob

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Pa

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The US kits come with 8.45 ratio not 7.91
From Jeff Green's post early in the development of the Freya Evo
We are still planning for an end of June release. Hirobo kitted a special version for MRC where the EX Radius block ( 0404-730), the 0404-618 third bearing block, teflon rudder control rod sleeves and the 8:45 gear ratio are included in our kits per our request.

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HomeAircraftHelicopterHIROBOOther › Building a Freya EVO w/ YS91
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