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HelicopterAlignT-REX 700XN News  New Align 700XN
02-04-2018 05:23 PM  77 days agoPost 21
jbjones

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Columbus, Mississippi

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wjvail
Anyway. I'll press on.
Good. Since no one else is documenting their experience with this machine, your contributions are appreciated. As popular as Align is, I'm baffled why there is zero talk about this machine across multiple forums. Maybe it's a pile of junk. Who knows.
wjvail
I spent yesterday working on installing the electronics.
Good deal. Hope you get to put some blade-time on it soon.

J. B. Jones

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02-04-2018 05:27 PM  77 days agoPost 22
wjvail

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Meridian, Mississippi

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If you are considering building this helicopter, you may need servo extensions. It'll depend on your servos and the length of their leads.

Align included a level spot in front of the main mast for the FBL controller. I have installed an iKON2 HD/BT I had sitting unused. It fit nicely. There is also a small area just behind the main mast that could potentially accommodate a small remote sensor. Several of my servos would not reach and needed 3" extensions.

If you are considering a similar installation I would strongly recommend buying a micro-USB cable that is a 90deg-Up cable. See link below and pictures. On the iKON controller the USB port would have been very difficult to access without some sort of adapter. Of course the controller I'm using has Blue Tooth functionality and I might have been able to use that instead. Personally I consider that a feature more suited to tuning a helicopter at the field - not so much for a new install.

https://www.amazon.com/gp/product/B...0?ie=UTF8&psc=1

"Well, Nothing bad can happen now."

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02-04-2018 05:30 PM  77 days agoPost 23
wjvail

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Meridian, Mississippi

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Head button (head stopper) acquired and installed. No screw included.

"Well, Nothing bad can happen now."

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02-04-2018 05:35 PM  77 days agoPost 24
Doublah

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USA

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Why it does not come with a head button seems really cheap. Thank you sharing the build, though.

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02-04-2018 05:39 PM  77 days agoPost 25
wjvail

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Meridian, Mississippi

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I have installed MKS servos and chosen to use their multi-piece control arms on cyclic.

A few notes... I had to modify the frames in the region of the forward two cyclic servos for clearance. See pictures. While there is no longer any binding, I'm not sure I'm done in this area.

If you chose the same installation, servos and arms, know that the MKS arms are drilled for 2mm but the Align cyclic control balls are 2.5mm. I had to re-drill and tap the arms for 2.5mm.

Edit: The third picture shows the control ball mounted on the wrong side of the servo arm. I fixed this before flying. Don't go by this picture. It is incorrect.

"Well, Nothing bad can happen now."

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02-04-2018 05:43 PM  77 days agoPost 26
jbjones

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Columbus, Mississippi

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Doublah
why it does not come with a head button seems really cheap.
Yeah, I see it that way too. Hell, even if you buy a head button, it doesn't come with the hardware to mount it. That is cheap. Goodness...

Is this normal for Align kits/products?

J. B. Jones

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02-04-2018 06:27 PM  76 days agoPost 27
wjvail

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Meridian, Mississippi

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Guys. It's a head button. Let's not throw the baby out with the bathwater. While I've come to expect one in the kit, this one did not. No big deal. I only mention this so you can add one to cart when you check out and avoid placing 2 orders.

They are out of stock at Amain so I bought mine at Amazon. I paid too much but I gotta keep this moving. The picture from Amain suggests it should include a screw. Mine, from Amazon, did not. Again, no big deal. I buy M3 screws a 100 at a time.

https://www.amainhobbies.com/align-...n7006af/p234052

https://www.amazon.com/Align-Alumin...gn+head+stopper

"Well, Nothing bad can happen now."

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02-04-2018 07:11 PM  76 days agoPost 28
ICUR1-2

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Ottawa, Ontario

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You don't seem to be having an easy time with this kit

I guess reading the manual before you buy would have helped with this kit.

spending time, paying attention

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02-04-2018 07:11 PM  76 days agoPost 29
Danny Calderone

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South Jersey

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Paying attention for sure. Thank you for sharing.

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02-04-2018 07:51 PM  76 days agoPost 30
Doublah

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USA

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I do remember a lot of people were not running the head button, but seems like they still should include it. Good pictures and build. Thank you.

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02-11-2018 08:45 PM  69 days agoPost 31
wjvail

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Meridian, Mississippi

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Alright. Sorry. I haven't posted to this thread in a few days. I had to run back to Germany last week and this project got put on hold. My dad always said, "If I could give up eating, I'd give up working... I just can't figure the first part out."

Anyway... I got home Friday night and did some tinkering yesterday (Saturday) and this morning.

Like most helicopters this one benefited from insuring the frame was straight. Because it is a "stacked" frame, it seemed to help more than most. I removed the skids, head and tail and loosened every bolt in the frame allowing it to "shift" as needed. I then put it on my surface plate. This was a time consuming job to be sure but I believe it was time well spent.

Please notice that in the first picture, the ball on the forward cyclic servo is on the wrong side of the arm. I have fixed this.

Page 17 of the manual says:
Main frame assembly point
First do not fully tighten the screws of main frames and put
two bearings through the main shaft to check if the
movements are smooth. The bottom bracket must be firmly
touched the level table top(glass surface); please keep the
smooth movements on main shaft and level bottom bracket,
then slowly tighten the screws. This assembly can improve
power and flight performance.

"Well, Nothing bad can happen now."

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02-11-2018 08:55 PM  69 days agoPost 32
wjvail

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Meridian, Mississippi

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The kit didn't come with a cutout for a switch. The iKON2 HD BT I am using has a small fail-on switch. I cut my own mounting hole.

A little editorial... The kit came with a large voltage regulator. Align calls it a "B6TX 2 in 1 Voltage Regulator Combo". Apparently it doesn't require a switch mount. Here is the part I don't understand - While I am not using Align servos, even the servos Align ships with its combo package are HV servos. Why did Align included a voltage regulator in the kit-only offering and why did they included it in a combo package with all HV components? I'm going to put mine aside and run straight 2s LiPo. There likely is an answer, I just can't see it right now.

"Well, Nothing bad can happen now."

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02-11-2018 09:05 PM  69 days agoPost 33
wjvail

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Meridian, Mississippi

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I should have mentioned, I test flew this helicopter this morning. It was just a hover tank to see that the iKON was programmed correctly and see if anything fell off.

This is my solution to the rats nest. I'm certain there are tidier options but this is what I came up with. I chose to bring the 3 cyclic servos and the tail servo together in a single bundle up the left side. Inside the frame is very narrow and the cabling quickly got very close to the servo arms, main mast and start nut. By routing the servo leads like this I can inspect them and they are clear of all moving parts.

Using MKS X8 servos required 2, 3" extensions and 1, 6" extension. I used connector locks to keep everything in place.

I will be interested to see other people solutions.

Bill

"Well, Nothing bad can happen now."

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02-11-2018 09:18 PM  69 days agoPost 34
wjvail

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Meridian, Mississippi

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These are terrible pictures but I'll chunk 'em up there anyway. I got one quick flight in this morning and it's been pouring rain ever since. When the weather clears I'll try again.

I set my TSA next to it as something to reference. Everything about this helicopter's appearance is a little different. It will take me a bit to get used to the fairly steep angle the helicopter sits at on the bench. I can already see the benefit. The tail is really far off the ground. The tail is up in the air and the nose is much lower than I'm used to.

"Well, Nothing bad can happen now."

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02-11-2018 11:14 PM  69 days agoPost 35
jbjones

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Columbus, Mississippi

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Hey Bill, glad to hear you got a quick trim flight on it.
wjvail
It will take me a bit to get used to the fairly steep angle the helicopter sits at on the bench.
I don't think it'll grow on me. To me, it looks like a cat bowed up for mating.

At any rate, hope the subsequent flights go well.

J. B. Jones

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02-12-2018 01:02 AM  69 days agoPost 36
Danny Calderone

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South Jersey

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nice touch with the surface plate and parallels... from one machinist to another

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02-12-2018 01:27 AM  69 days agoPost 37
wjvail

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Meridian, Mississippi

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jbjones
I don't think it'll grow on me. To me, it looks like a cat bowed up for mating.
Joey... I remember you saying you didn't like the jacked up look; however, there is this, we learned years ago that having a car jacked up in the back makes them faster - they're always pointed down hill... Same principle for helicopters.

"Well, Nothing bad can happen now."

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02-12-2018 01:30 AM  69 days agoPost 38
jbjones

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Columbus, Mississippi

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wjvail
..having a car jacked up in the back makes them faster - they're always pointed down hill... Same principle here.
Can't argue with science.

Joking and dumb comments (from myself) aside, was the trim hover unremarkable?

J. B. Jones

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02-12-2018 01:41 AM  69 days agoPost 39
wjvail

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Meridian, Mississippi

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Danny Calderone
nice touch with the surface plate and parallels... from one machinist to another
Well. I wish I was machinist. But thank you for the compliment. Cheers.

I bought a surface plate years ago. Every time I turned around I needed a smooth, flat reference. The Align manual says use a piece of glass. That might work but of course glass flows over time. (I have a piece of glass specifically made to be flat - and I know mine is flat because I checked it on my surface plate. In fact, if it wasn't flat when I got it, storing it for 20 years on a granite surface plate made it flat!)

I don't have to use my parallels very often and for that reason they are low grade Chinese. Mine have light corrosion in places. They are good enough for the rare times I use them. I used them for the 700XN because the fan shroud, engine and engine mount extend below the frames. I could have removed these bits but the engine mount squares up and fixes the lower part of the frames. I wanted it loosely installed for this check.

"Well, Nothing bad can happen now."

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02-12-2018 02:12 AM  69 days agoPost 40
wjvail

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Meridian, Mississippi

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jbjones
Joking and dumb comments (from myself) aside, was the trim hover unremarkable?
Scary unremarkable. I'm afraid to say it went super - it guarantees catastrophe on the next flight.

You know the drill. The first 2 seconds of a new helicopter validates you have the gyro set up correctly(ish). The next 3 minutes ensures nothing is going to quickly work loose and seize. The 10 minute tank suggests that most of the most important parts are tight enough. I finished the tank and took it back into the shop. I could tell you that it was because it was about to rain (it was) but mostly I wanted to see if there was still a screw in every servo horn.

The flight went better than I had hoped. There was no vibration in the fuel tank or vertical fin. The blade tracking was good. The iKON is new to me and it didn't do anything unexpected. The governor worked as expected. In short, I had to restrain myself from flying harder. It seemed very friendly immediately.

I have head speeds of 1,450, 1,650 and 1,900 set up. I didn't try 1,900 on the first flight but the other two flew well.

The gear train seems to have loosened up quite a bit. The entire helicopter was smoother after squaring it up on the surface plate and a few minutes run time only helped. Remember, the gear train is more complex than the typical helicopter and this is something I'll be keeping an eye on.

Also... Going back to an earlier post, assembling this helicopter is something of a quest to find what needs to be Lockited and tightened. I was happy nothing fell off.

Bill

"Well, Nothing bad can happen now."

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