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View Full Version : I got one... And two question on breaking it in...


Danyboy
07-28-2008, 03:55 AM
Hi folks!

Since yesterday, I'm calling an airworthy Logo5003D my own... :)

At first, I did laugh my ass off about myself:
I did get worked up quite a bit about the length of linkages which were nowhere correct according the manual when applied to my setup. Thought I wouldn't be the only one, getting angry I didn't read about different lengths anywhere... So I adjusted the links and wanted to go to fly.
I wondered whether it was just me or did the rotor really spool up at a slower rate than I'd hear the motor? I pushed that thought aside blaming first-flight and related nerves for it...
But then it wouldn't lift-off despite quite a lot of collective... When I expected it to jump into the sky with the amount of collective available...
At first I was angry at the pinion that I suspected to have come loose, resulting in slip and lower headspeed. On second thought after checking that, I angered at the one-way since the rotor was turning really free in both directions.
So I picked it up to go back to my workshop. Or better said I wanted to... Only to find that I only had the head in my hand and the rest of the heli was still on the ground...
During the build, I did notice that it was too easy to put the head's bolt into its hole, but never had a second thought about it...
Shame on me that the bolt indeed was not in its hole... It's been a long time though since the last time I laughed about myself like that... :)
After installing the head as supposed, all the links were spot-on with the original lengths, except the servos which needed two turn adjustment, which is to be expected.

Questions that did arise though:
I'm guessing the grips will free up after some more flight?

At the moment they appear to be a bit tight, smooth but tight. I do have the "MIK2756 - Dampener Rubber Set (3D)" installed, on each side two rings in the hub and one spacer toward the grip, right?

I also hope the motor- and ESC-temps will come down some more after some more flights to let the whole heli settle down and wear-in? The first two flight of 4mins to break in the packs left the motor warmer than I expected from other user reports...

Setup is the following:
Logo500-3D
Hacker A40 10L ET, 15T Pinion mod 0.7
Kontronik Jazz 80-6-18 (80% throttle, will try increase to 85%)
Flightpower EvoLite 5350mAh 6S
Hitec HS-6965HB for swashplate with Mikado-arms
Logictech LTG-2100T gyro with LTG-6100G Servo
RotoTech CF Main Blades 550mm
Standard Tailblades (K&B 84's are on update-list...)
I have to admit though, it's quite a contrast against my turbine: As super-steady as well but light as a feather...
I'm loving it...

OICU812
07-28-2008, 03:59 AM
Even with the #3092 Xtra Hard dampers there should be no resistance. Ensure your thrust washers are correct in placement of course and that your radial bearings are fully seated and that you do in fact have the appropriate amount of dampers in each side. Both grips should move smoothly, no notchyness even from day 1.

Nice save on the head, that could have been fatal. :wow2:

Danyboy
07-28-2008, 05:06 AM
Shawn,

Thank you very much for your quick reply!

Indeed it was a save, though I am mad at myself for not having "clicked" when the first signs of troubles appeared with the link-length-mismatch...

However, as you mention the thrust-washers, I get reminded of something I did find during the build.

For the Logo500-3D, in the drawing for the grip-assembly, they write a thickness of 0,5mm for that washer partnumber 2350, between radial and axial bearings. On the side of the page, they list it with a 1mm thickness, and delivered was a piece with 1mm.

Can you confirm a thickness of 1mm is correct?

There is no notchiness at all, just a little friction. When I loosen the bolt holding the grip on the spindle on one side only for about one quarter turn, it start turning freely, just the way I would like...

Cheers,

Daniel

OICU812
07-28-2008, 05:28 AM
Shawn,

Thank you very much for your quick reply!

Indeed it was a save, though I am mad at myself for not having "clicked" when the first signs of troubles appeared with the link-length-mismatch...

However, as you mention the thrust-washers, I get reminded of something I did find during the build.

For the Logo500-3D, in the drawing for the grip-assembly, they write a thickness of 0,5mm for that washer partnumber 2350, between radial and axial bearings. On the side of the page, they list it with a 1mm thickness, and delivered was a piece with 1mm.

Can you confirm a thickness of 1mm is correct?

There is no notchiness at all, just a little friction. When I loosen the bolt holding the grip on the spindle on one side only for about one quarter turn, it start turning freely, just the way I would like...

Cheers,

Daniel


You have the correct ones, the showing of the .5 is incorrect, if you view on the side of manual "Page 11" it states 1mm, which is correct.

You should have the spindle bolts turned in tight, do not leave them turned out at all. And yes please use some blue loctite on these bolts. If you are runing the harder dampers they will need to be broken in and this friction you feel will be much less after 10 flights or so, however they will last you many many flights,,,. If you pull on the grips outwards they should be smooth, if they are then you are perfectly fine, you should not have to pull real hard either. Be well.:thumbup:

Danyboy
07-28-2008, 05:57 AM
Shawn,

Once more thanks for the speedy reply!

Your answer tells me exactly what I hoped for!

The grips are smooth as silk when I pull them outwards...

And no, I would never fly with something untightened or not loctited... ;)

Cheers and keep 'em flying!

Daniel

Funflyer
07-28-2008, 09:11 AM
Danyboy, I did the EXACT same thing on my 500 build a few months ago. The head pushed on hard then stuck so I assumed it had bottomed out and put the Jesus bolt in on the first try. I too was surprised it was lined up on the first try but didn't stop to think that it might be ABOVE the main shaft... So did you have to clean a little melted plastic ring out of the top of your head block too? Thank goodness mine didn't take off without the head either! :Slap

Danyboy
07-28-2008, 12:21 PM
Yep, Funflyer, that's exactly what happened... ;)

Guess I was lucky there wasn't too much damage done and the head is still running true. I wouldn't want to know what would've happened if I had it running for a longer time... Might've been the first time I would've had to replace parts before it's been flying... ;)

Been flying two batteries today and dang, I both programmed the "normal" and 3D-settings as per manual and both felt *just* right.
Honestly, it really feels like the first time a heli's following willingly my inputs and doing nothing else... Almost scary... :)
I don't dare to dream how it would fly with a v-bar... hog-heaven? ;)

Cheers,

Daniel

helicraze
07-28-2008, 05:52 PM
Yes, i imagine it would be!

Danyboy
07-30-2008, 02:18 AM
And it's confirmed.

Having now 9 flights under the belt, everything started to loosen up after around 6 flights...

I'm really happy with it.

It's been a long time since I could just plug in, fly, plug out, change battery, plug in, fly, plug out, change battery, plug in, fly, plug out, change battery, charge batteries...

No mixture, no strange starting, no glowplug, no flooding, no empty battery in starterblox, no oil or other stinky goo, no cleaning except for bugs...
No dirty or smelly fingers...

Life has a meaning again... :)

Cheers,

Dany

OICU812
07-30-2008, 02:38 AM
Right on Dany, keep us posted when you take a break from having fun!:hug: