I am not fully convinced

[scoio]

Hi there, just installed the RJX 500 head on my HC500.
I used the stock HC swash, but seems to me that the geometry is not correct. On MB I am getting purple led on poit J.What do you guys think?

[superrmario]

Originally Posted by scoio

Hi there, just installed the RJX 500 head on my HC500.
I used the stock HC swash, but seems to me that the geometry is not correct. On MB I am getting purple led on poit J.What do you guys think?

Looks like the balls that go on the swash for the swash driver, are too short. The swash driver looks like it is not correct

Sent from my Droid Charge using Tapatalk.

[scoio]

In fact the swash is smaller than the original 500 RJX swash which is the same one as the Trex500.
Don t know if I should maiden like that or not....

Chris

[Mr Nice Guy]

You can get shorter arms for the RJX swash driver. I got the protos ones which are shorter and fit my compass atom 500s smaller swash perfectly. I got mine at Hobby King.

[scoio]

I have a RJX for my 450 pro which went flybar last month. Will try to fit it and see the difference.
Thanks

Chris

[scoio]

Ok, just found out that the 450 pro head swash driver is totally gone....in my last crash I snapped the screw on the main head...and remember that everything few away.At this point I don t know what else to do.Should I give a try like it is?

Chris

[Blayd]

Are you getting any binding? Looks like you will if the swash go to a fairly decent angle. Better check your swash for binding, or strikes from the arms.

[scoio]

As you see in the pic, I have the mixing arm that slightly touch the antirotation bracket.
But that s all.My idea is to cut a bit the bracket to let the mixing arm spinning properly.
My only concern is the danger for these arms to came off in flight.Should not happen as the ball link gives them good grip, but I am not totally confortable to fly it, specially with the hs that this bird is good to run.

Chri

[mtuccio]

I would not fly this! The geometry is not correct with the swash locker arms and this could lead to a ball popping off in flight. It also looks like the top arms are slightly past the centerline of the main shaft which isn't a good thing to do either. I would not risk any of my helis knowing that these things were not correct. Hope this helps.

[Blayd]

Its not just the antirotation bracket.. if the swash moves up, dont the arms hit the swash plate where the servo link balls are?? As the swash moves up, the angle of the arms get even more steeper outward towrds the swash links...
I agree... especially with FBL.. you need the geometry right I think.

I'm not so sure the RJX head is usful for the HC500 swash. I know of one member that flies the Compass FBL head on the HC500 with excellent results. Here is his.. maybe PM him....

https://www.helifreak.com/showpost.p...5&postcount=14

[JCUNNY]

Ok,

After looking at your pics, you are running into the same problem that I did when I installed the Rex 500 head on mine.

There are two solutions to resolve this:

a. Grind down the Auto bracket and the lower part (plastic part that attaches to swash) of the washout arm.

b. Use the HDX-HC washout arms and clevis.

Both will work, I have done each.

Here's my post on fitting the Align head...

https://www.helifreak.com/showthread.php?t=270076


Regards,

JC
Austin, Tx

[scoio]

Thanks JC, I tried to change the linkage ball with the trex 500 which are bit longer but can t make it right as the screw is not fitting on the swash, and I have no other screw which can fit.
I think I will go with your suggestion - a - you mentioned above.
Is pretty disappointing that there is not FBL head which fit properly on the HC500.

Chris

[Mr Nice Guy]

Why not just get the RJX protos arms? They are shorter than the ones for the Trex and are not expensive. Gave me perfect geometry on my Atom 500. Here's a link http://www.hobbyking.com/hobbyking/s...dproduct=12138

[scoio]

Originally Posted by Mr Nice Guy

Why not just get the RJX protos arms? They are shorter than the ones for the Trex and are not expensive. Gave me perfect geometry on my Atom 500. Here's a link http://www.hobbyking.com/hobbyking/s...dproduct=12138

Thanks, I think I will follow your suggestion.But what about the bolds, are they fitting or are they smaller size?

Chris

[Mr Nice Guy]

Originally Posted by scoio

Thanks, I think I will follow your suggestion.But what about the bolds, are they fitting or are they smaller size?

Chris

Not sure what you mean by "bolds"? I am guessing that you mean bolts. If so they bolt on to the head block just like the arms that came with it. The arms are just shorter and will give you better geometry.

[Blayd]

Originally Posted by scoio

Thanks JC, I tried to change the linkage ball with the trex 500 which are bit longer but can t make it right as the screw is not fitting on the swash, and I have no other screw which can fit.
I think I will go with your suggestion - a - you mentioned above.
Is pretty disappointing that there is not FBL head which fit properly on the HC500.

Chris

There IS a FBL head that fits the HC500.. its the Compass Atom 500 head. $120 here.. no messing around....http://www.nankinhobby.com/Compass-P...prod_5585.html

This heli fies this head....This is TomsToy2 HC500 FBL using the Compass head and a miniV Bar.

[Tomstoy2]

Wow, so that's what it looks like, sexy! Forgot about it really.

Haven't been here for awhile. Been exploring other avenues. Don't look like things are getting any better for the HC line.

Looking over this thread, the answer could well be your only option for that head is as Mr. Nice Guy suggests.

That is nothing like the head I have. Don't even think I have ever even seen that head before, or if I did I just passed it right over.

By no means confuse this head with a Compass head, it is nothing like it, in looks or geometry.


This much I can tell you. if you want the best head you can put on an HC, the Compass Atom 500 is a drop in fit, perfect with a MiniV combo. Drop in an 80 amp motor, Edge Fbl blades, CC 100a esc, ceramic bearings, 65c battery and the damn thing will scare the hell out of you,,, and at the same time really predictable,,, locked in to a tee,,, plus, "feel" every bit a gentleman that only VBar will give you.

Here is what I learned on heads. Not all are created equal. The cheap ones are pretty much just that.
Flight characteristics is all in the math, and very few companies produce a quality head in both design and quality of materials.
Not one company makes the best of the heads in all sizes of heli's either, so you have to do your homework.

Here's an example. I love my Mikado head on my HDX450, also a drop in fit, but would never run their 500 head, not on an HC anyway. Nothing wrong with the head, really, but the Atom head is the perfect head for a person who can enjoy the benefits the head is capable of giving you.

If you desire to derive the best performance from you HC, it is the only one I would recommend.

It really is an amazing flying helicopter.

I apologize to the person who p/m'ed me about the head. I was probably super tied up with work, and my lotest "dark arts" project.
I should have looked closer to what you were asking.

[scoio]

Well, I am gonna try out first the Protos mixing arms.
Atom head can t find it on stock anywhere.Do you guys knows some places where it is i stock?

Chris

[Blayd]

Nankinhobbies will have them in soon.. they usually dont stay out of stock very long.....

[scoio]

I finally got the Protos arms, were so excited, put them on and....boom....they do not fit, I mean, the screws that goes on the rotor housing are 2 mm vs 3 mm of the RJX head.Sooo...I am,first, so pissed, second tired to try it out.
Decided to get the Atom 500 fbl, found in stock in a shop in the UK.
Already place the order....

Chris