RunRyder - Blade Tracking, Again............URGH! - SOLVED!

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e-E-Sky Honey Bee- Lama- Belt CP- E-Smart > Blade Tracking, Again............URGH! - SOLVED!

Gregor99
Elite Veteran
Location: Western Wa

Hello All,

Sorry I haven't been as active as usual. I just got back from a 2 week, 3000 mile Christmas road trip to Pheonix via Disneyland. I did manage to pop in from time to time, hitting a hotspot or hotel here and there.

Had a great Esky Christmas. Got a purple tail, a couple batteries, bearings and CF blades. Spent the day getting installed with high hopes the new parts would solve all my issues.

Sadly, there was only a minor improvement in the vibration in the tail. I'm not sure what's going on there, but its not keeping me grounded. So its second on the list. The other issue was blade tracking issue I started working on before the big road trip.

The problem with the blade tracking is that a half a turn on the ball link is good for about an inch of movement on the blade. The low blade starts about 1/2 an inch low. One half a turn and the low blade is 1/2 and inch higher than the other one. Obviously its kind of hard to fly like this

I thought the CF blades would help, but they behave the same as the woodies. Although they sound MUCH better. As you might expect, the higher the headspeed, the worse it is. I've been able get in the air by restricting the throttle to 80% which works about to about a 1/4 inch difference between the blades. Its not ideal, but its better than being stuck inside with the SIM all day (eh Tryan

).

I replaced the center hub today which pretty much requires an almost complete dissembly of the head. While I had it apart I checeked for and tightened any loose screws. Cleaned, lubed and checked for straightness of everything. I did find a for loose screws and some things that needed a little attention. Unfortunatly none of my efforts helped the tracking issue.

For tuning, I've tried both loose and tight blade grips and feathering shaft. No difference.

As for the solution, I'm open to suggestions. I'm thinking about the Ti turnbuckles from MicroHeli. As long as the tracking stays consistant, that would get me the finer adjustment required to get the blades to line up.

But I wonder if part of the problem is the slop in the plastic head. Comments appreciated.

01-01-2008 05:01 AM

DougsRC
Elite Veteran
Location: MA

Slop in the plastic head is certainly an issue as you drive further onto Heli highway. My flying friend has the plastic head on his KING but he is a conservative flyer. As you move along on Heli highway you will crave more precision(spellcheck ???) I have the TREX clone or CopterX head and I am totally satified with it. I am not easily totally satified. So basically you have to go CNC and get more precision(spell check???) or live with some slop

01-01-2008 05:12 AM

tryan02
rrProfessor
Location: Canton, Missouri

My problem was in the head dampening. I tightened the spindle and slowed it down, tracking held within a 1/2inch. Now with the metalhead I have about 20 packs ran through it, and haven't touched tracking. I cant get the woodies perfect they are a 1/2 blades width away. There is no distance between the 2 just a little thicker than one blade.

Canton MO backyard flying club
Club President
Team No funds left.

01-01-2008 05:20 AM

HOMEPAGE

DougsRC
Elite Veteran
Location: MA

Tryanasorous REX , Your buzzed, there are no comma's in your replies

01-01-2008 05:25 AM

tryan02
rrProfessor
Location: Canton, Missouri

look again

Canton MO backyard flying club
Club President
Team No funds left.

01-01-2008 05:28 AM

HOMEPAGE

DougsRC
Elite Veteran
Location: MA

You bastard , How could you , You edited !! Dag Nab it !!!

01-01-2008 05:34 AM

Gregor99
Elite Veteran
Location: Western Wa

Correction, the turnbuckles are from Xtreme

http://www.xtremecx2.com/servlet/th...n--Honey/Detail

01-01-2008 05:51 AM

tryan02
rrProfessor
Location: Canton, Missouri

I would of already had those if the cnc head wouldnt of fixed my problems.

Canton MO backyard flying club
Club President
Team No funds left.

01-01-2008 05:54 AM

HOMEPAGE

Gregor99
Elite Veteran
Location: Western Wa

Quote
As you move along on Heli highway you will crave more precision

I figured this would be true and I'd go for the purple after the requisite new-bee learning curve and manditory crashes. What I didn't count on was having to go purple just to get proper blade tracking.

At this point I don't think my skills warrant the $100 head. I might have to try the $7 turnbuckles as I'd still want those even with the purple head.

Does it seem odd that half a turn on the ball link is giving an inch of travel? Headspeed is about 2400.

01-01-2008 05:59 AM

tryan02
rrProfessor
Location: Canton, Missouri

Is that measured headspeed or calculated just curious would like to know what mine really is.? I think you got head dampening issues my tracking was like that but it wouldn't stay the same from flight to flight one would go high adjust then that one would go low. you wont need those turnbuckles with the metal head. I would tighten the spindle nuts and maybe add some shims to see if it helps an inch is more than I saw. I had about 1/2" with 1/2 a turn.

oh I also heard you can change out the head dampening o-rings for stiffer ones.

Canton MO backyard flying club
Club President
Team No funds left.

01-01-2008 06:07 AM

HOMEPAGE

Blusaber
Veteran
Location: Ca

I agree with Tryan about tightening the spindle nuts that solved a lot of my tracking issues back when I ran the plastic head.

Gary

01-01-2008 06:12 AM

Gregor99
Elite Veteran
Location: Western Wa

Headspeed was calculated. I didn't get the tach for Xmas

I've tried the feathering disfunctionally tight.

Yeah, I was also thinking about some harder dampers, not sure where to get them. I'll check my RC box. I had some shock rebuild kits that had some hard o-rings about the same size.

01-01-2008 06:45 AM

tryan02
rrProfessor
Location: Canton, Missouri

Like to see you figure that out. Im hoping tougher orings are the answer would be an easy fix. you could package them up as a HBK2 performance kit with the turnbuckles and make a fortune.

Canton MO backyard flying club
Club President
Team No funds left.

01-01-2008 04:41 PM

HOMEPAGE

lead47
Heliman
Location: Utah, USA

I have been through many HB's, the last being the Cool with lots of bling). I have had the same erroneous tracking problems and found that a new feathering shaft solved the problem. The HB Cool was a great flying heli but for some reason, the nylon main shaft gear would erode the motor pinion. I finally retired the HB and went to a T-Rex 450SE and have never looked back. I have many spares including brushless motors, blades, purple stuff, etc. if anyone is interested. Good luck.

T-Rex 450SE - 2 Times

01-01-2008 07:23 PM

tryan02
rrProfessor
Location: Canton, Missouri

AAHH crap here we go again Trex this trex that.

Canton MO backyard flying club
Club President
Team No funds left.

01-01-2008 10:17 PM

HOMEPAGE

Gregor99
Elite Veteran
Location: Western Wa

Well, at least he offered some helpful advice and didn't say "Should have got a T....".

Lead, thanks for chiming in. Good tip, one that I had followed a number of times on my Blade CP. The feathering shaft on my HBK2 was recently replaced and has been out a half a dozen times for inspection.

01-01-2008 10:21 PM

tryan02
rrProfessor
Location: Canton, Missouri

you replaced the hub right gregor? this thing just seems loose that or blade grips worn. Mine got worse after I had a blade strike with dining room chair I think It might of pulled the bearings to far into the grip and caused some slop on top of the high headspeed.

Canton MO backyard flying club
Club President
Team No funds left.

01-01-2008 10:25 PM

HOMEPAGE

Gregor99
Elite Veteran
Location: Western Wa

Yes, I just replaced the hub. I think the old one was slightly bent. Ya, I was wondering about the slop in the blade grips. I didn't pay much attention to when it was new. So I'm not sure how much was there before the garage door hit. On side note, isn't it nice how we are remember the one or two times we've crashed the HBK2. Compared to the Blade CP days where every other flight meant a new set of blades and a feathering shaft.

Today's test was working on the dampers. I searched my RC supplies and while I found all kinds of O-rings, and possibly suitable parts. But none of them was close enough in size. I ended putting a large washer between the blade grip and the hub. The little washer with the raised section is on the blade grip side fitting onto the bearing. The pretty much eliminates the damper completely. It tightened up the head considerably. The blade grips are much more solid. However the 1 inch swing on half a rotation of the ball link is still there. So even though it removed alot of slop the blades are still far apart. I'm going to try and find the turnbuckles locally.

01-02-2008 12:13 AM

tryan02
rrProfessor
Location: Canton, Missouri

yeah dont miss the bcp Oh the turnbuckles are only 2 hrs away from me. Im in the middle of an RC hub hrs away from horizon tower great planes and a bunch of others. Also have you tried swapping the blades one for the other flip them over. If the head was fine the blades would track the same If the head was bad the blades would be the opposite high vs low. hopefully its the same and the head is fine and all you need is turnbuckles

Canton MO backyard flying club
Club President
Team No funds left.

01-02-2008 12:47 AM

HOMEPAGE

Daltuch
Heliman
Location: Seattle WA

Have you tried adjusting the tracking with each link instead of just working with one?

01-02-2008 02:42 AM

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e-E-Sky Honey Bee- Lama- Belt CP- E-Smart > Blade Tracking, Again............URGH! - SOLVED!

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