HDX300 Build Videos wll be here

[Finless]

Here will be the Helidirect HDX300 build videos.


HDX300 Kit overview (10 Megs)

HDX300 Frame build (25 Megs)

HDX300 Landing Gear (10 Megs)

HDX300 Tail with Belt (10 Megs)

HDX300 Maingear, head install with belt (45 Megs)

HDX300 Servo install and setup (35 Megs)

NOTE: The below video is important as head setup is different and please see the ending part of the video to make sure you have your pitch range set up with NO binding!
HDX300 Head Setup (46 Megs)

NOTE: Setting up the HDX HH gyro (same as the Align, telebee, etc) was a PAIN... You MUST make sure you program out the creep to get it to work right! Anyway this is a big video but worth the watch I think.
HDX300 Tail and Gyro setup(46 Megs)

NOTE: Update to some parts I was showing. I got the new landing gear and proper HDX300 tail case. I show these along with motor install.
HDX300 Part Updates and Motor install (18 Megs)

HDX300 Electronics placement (11 Megs)

HDX300 Sonic ESC setup (40 Megs)


Enjoy!
Bob

[hkb817333]

WOW

[LITHIUMSTATIC]

That looks really cool. I learned on a Blade CP and it would be neat to upgrade it.

[lennydude]

WOW.......

AGAIN...............great job BOB

BTW.............do you get much sleep? LOL

Lenny

[BarnOwl]

Actually this is a very nice heli to fly indoors in my office if the weather is bad. I like to see your flying vid, if it comes to that I might get one to replace my old Dragonfly wich I never fly anymore now I have the T-Rexes....... :glasses:

[LITHIUMSTATIC]

Yes Bob a flying video of the heli would be awesome. It may help me decide if I want to buy one of these or not.

[skid]

Why do I have this funny feeling that Bob's heart isn't in this build. :wink:

[OnGuard]

...

[Finless]

Originally Posted by skid

Why do I have this funny feeling that Bob's heart isn't in this build. :wink:

Why do you say that? My heart is in every build

How does the thrust load from the belt pulley and main gear get transfered up to the lower mainshaft inner race. There must be some kind of spacer that I haven't seen in any pictures yet.

Well good question! There is no washer there but it still seems to work. I would put a washer between the two if you have one.

Bob

[skid]

Don't get me wrong. I enjoy your vids. I learn new stuff. I get to see new choppers. You're doing a fine job on this build. It just doesn't feel like a kid with a new toy build.

[Finless]

Well maybe because it's cominig to me in pieces so I dont yet know the end outcome like I do when I have everything in front of me ready to go.....

Bob

[ptremb]

wish I knew that twist tie trick when I put mine together.I used a peice of string to pull the belt thru the boom,you had yours in before I had the knot tied.I'll rember that one,thanks

[Finless]

FYI, I pulled the frame video as I need to make a correction. I used the wrong screws for mounting the metal hardware to the metal frame plate. Not that it matters much but I will redo that segment in the morning and post it up again.

Bob

[Funky]

Do you know if/when Helidirect is planning on coming out with a full HDX300 kit?

[Finless]

OK new frame build is up... Basically what changes was what screws to use where. No biggy.

However I do want to share this. The manufacturer shows the 2 main pulley idlers being under the screws for the rear servo plate. I did not like that approach personally.
1) I felt it was to close to the main drive pulley and might stress the belt more
2) It left longer run of the belt with no support.

So below is a picture showing how the manufacturer built it but in my videos you will see I prefered to mount them in the rear holes.

Just sharing for the benefit of all so you can decide.

Bob

[ronaldf]

Originally Posted by OnGuard

How does the thrust load from the belt pulley and main gear get transfered up to the lower mainshaft inner race. There must be some kind of spacer that I haven't seen in any pictures yet.

I had the same concern. When assembled, the main shaft did not turn as smoothly as I felt it should. The upper retaining collar has a “stepped” collar but it seemed too large to ride only on the inner race. Both the belt drive pulley and the upper retaining collar appeared to have rub marks on them from the support tube. I took a couple of spare stepped washers from the blade shaft assembly that I had laying around and used them as thrust washers on each bearing. The washers fit the shaft perfectly. Now the whole main shaft assembly rotates smooth as silk.

[OnGuard]

...

[Finless]

Yes it DOES clamp enough but you have to REALLY tighten up the screws... This is actually no different than the TrexSE with aluminum boom as it slips too... The fix? Just wrap ONE wrap of scotch tape around the boom at the clamp and it will be fine.

Bob

[OnGuard]

...

[ptremb]

hello finless,
you stated that when assy main shaft, to pull up before setting the upper collar. I found when I did mine originaly (before having ever seen this site and/or assy. vids,good work by the way, very enlightening) that everything was bound up so tight that the auto rotation gear wouldn't freewheel and the tail drive sprocket scrubbed the shaft support tube enough to leave marks in the top plate and prevent free rotation of the main shaft, as others have voiced concern over. what I finally did was install the auto collar and main gear, install the tail sprocket and use 2 ".001" feeler gauges between the main and tail gears to allow free rotation without excess end play. on the upper collar I used a dial indicator to set .001"-.002" end play on the shaft to allow free rotation of the main shaft,not that this part will make a great amount of difference as the lifting thrust generated will pull the main shaft up causing the tail sprocket to scrub the support tube in the end,but atleast I know the shaft spins freely to start.
this issue just begs for a set of torrington bearings for a remedy