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« on: October 23, 2010, 10:10:04 PM »
vinay
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Got the Heli Today, Booked on 12th of this month. Opened by customs but not charged.

It will be a pretty Long build for sure, still lot of spares and batteries to arrive. Trying to make the heli as safe as possible.

Configuration:

1)Hk500 CMT with TT upgrade.
2)Quark gold case
3)BLS 980
4)Turnigy MG930
5)ICE 75 ESC
6)Turnigy Typhoon 500 H
7)Battery yet to be decided based on CG will be around 2.6 to 3 Ah 30 C to 35 C
8)Airtronics 7 channel RX

UPGrades:

1)Head:
A)Everything between the main blade grips will be align - Feathering shaft, Thrust bearings, dampeners, washers. I have left the radial bearing as it is.
B)TIG 425 MM Z weave.

2)Body:
A)Main gears, autorotation gears.
B)tail gear set.(This has to be changed if Autorotation gears are changed. Else will strip).
C)Align horns on MG 930 servos.

3)Tail:
A)Tail rotor holder
B)Umbrella gears
C)tail shaft(won't match with align - going with stock)
D)Torque tube.
E)Slider set(to avoid vibrations if any).
F)Tail blades.

Here is the guide for a 500 GT build.
http://www.eflightwiki.com/eflightwiki/index.php?title=HK500GT

HK CMT 500.jpg
HK 500 CMT TT build Thread.
* HK CMT 500.jpg (77.8 KB, 800x494 - viewed 2921 times.)
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« Reply #1 on: October 23, 2010, 10:17:45 PM »
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@ Rajesh /RotorZone:

The Z weave will not even come close to the quality of the Rotor techs you were using on the Atom. I can say they are 75 to 80% as good. But should be OK enough for the kind of flying most of us do.
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« Reply #2 on: November 01, 2010, 10:49:26 AM »
vinay
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MKS 8910 - I already have.

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=8255

OR

Turnigy BLS980 - Yet to order.

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=9980

Once I decde on the tail servo, I would be ordering batteries to match the CG. What do you guys say? I thought of S9254 earlier, But for 10 grams extra I can get a bls980.

I am seriously confused. The heli I am building should be seriously good performer. Grin
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« Reply #3 on: November 01, 2010, 12:11:03 PM »
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The Z weave will not even come close to the quality of the Rotor techs you were using on the Atom. I can say they are 75 to 80% as good. But should be OK enough for the kind of flying most of us do.

Rotortech makes some of the best blades out there, so 80% of that should be ok for a HK heli. What worries me about cheapo blades is the safety. Tracking and balancing issues are secondary concerns. If there are no reports about structural failures, then worth trying at that price.

Regarding the tail servos for 500 size, in my experience you need a full size servo on demanding maneuvers. A mid size is usable, but might feel sluggish once in a while.
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« Reply #4 on: November 01, 2010, 01:07:56 PM »
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The Align GP750 + DS520 mini servo combinations seems to work very well for me, and our local 3D master Ali. He puts it through enough grief to bring out any problems !
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« Reply #5 on: November 01, 2010, 03:19:44 PM »
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The fact is that I had got the 8910 for the 450 pro TT.

I would be anyway ordering either another BLS 980 or a 8910 (both almost same price).

Now that rajesh says +1 for a bls 980.

Anwar bhai, Considering the fact that price is not an issue, would a bls 980 be too heavy for a 500 size?

It would be increasing the heli weight by 30 grams. To counter that I would be increasing the battery weight by 30 grams at the nose end. So would increasing the 500 heli by 50 to 60 grams be bad?

I have no Idea what so ever regarding the weight to performance ratio. Head Scratching

Though I would be running a High HS for sure. Hence TIG blades.
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« Reply #6 on: November 01, 2010, 03:31:38 PM »
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Which online shop you have purchased from and which shipping agency is used? As I am amazed to see that 'Customs' are so nice and humble that they not only allow this heli but also not charged anyting. Head Scratching I was struggling with Delhi Customs from last few days and they were so adamant that this is not allowd by any law.
Anyways I managed them but I want to know which service (courier) was used in shipping?
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« Reply #7 on: November 01, 2010, 03:32:52 PM »
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Hobby city air parcel.
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« Reply #8 on: November 01, 2010, 03:36:30 PM »
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Anwar bhai, Considering the fact that price is not an issue, would a bls 980 be too heavy for a 500 size?

It would be increasing the heli weight by 30 grams. To counter that I would be increasing the battery weight by 30 grams at the nose end. So would increasing the 500 heli by 50 to 60 grams be bad?

These helis can carry some added weight without issues (in AP and other applications), so 30g extra is nothing to be worried about.  In fact, you should not need to add any weight to handle this small difference.

And these servos are much faster than anything I have used so far, and anything that I have seen being flown (live) by even people like Tareq !
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« Reply #9 on: November 01, 2010, 03:39:33 PM »
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The Align GP750 + DS520 mini servo combinations seems to work very well for me, and our local 3D master Ali. He puts it through enough grief to bring out any problems !

I had that exact same combo in Atom and that is where my experience comes from. Could be due to difference in tail design.

See what balances the CG with the battery you are going to use. For me a full size servo was the right balance without adding weight.
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« Reply #10 on: November 01, 2010, 03:42:21 PM »
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And they are cheap too  Grin considering that a equally good futaba costs like 120 + USD and bls 980 out performs it. No wonder MKS servos are good.

Hence I recommend the DS480 turnigy servos on the 450 threads.

OK me order Turnigy bls980 once they are in stock. I have ordered the Trex 600 tail servo holder from HPross.

The performance of the heli will not be as good as tareq flies because the cyclis iam using are not s9257. its a mere mg 930, plenty enough for me.  Wink
I remember even gaurav was using this servo with a spartan ds760 on his raptor.
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« Reply #11 on: November 01, 2010, 03:42:50 PM »
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I had that exact same combo in Atom and that is where my experience comes from. Could be due to difference in tail design.

What end points (EPA / ATV / travel adjust) do you run on the rudder channel ?
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« Reply #12 on: November 01, 2010, 03:43:31 PM »
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See what balances the CG with the battery you are going to use. For me a full size servo was the right balance without adding weight.

I dont have the batteries yet! I will order them Once I have a flying 500.

I will be maidening it on 2 X 3s 2200 nano techs 90 C batteries, find the right weight to balance the CG and then order batteries. 30+ c for sure as suggested by u.
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« Reply #13 on: November 01, 2010, 03:54:53 PM »
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First post not editable, I wanted to update the pricing there so it will be helpful to others.
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« Reply #14 on: November 01, 2010, 06:12:27 PM »
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What end points (EPA / ATV / travel adjust) do you run on the rudder channel ?

I can't say for sure without checking my radio, but I usually leave it near 100 and should be the case here too. Note that it is not a lack of piro rate that I see. The rate is not consistent, it is fine for 95% of the time, but occasionally it takes longer for the tail to respond. I saw a definite improvement in this with the servo upgrade.
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« Reply #15 on: November 01, 2010, 08:01:06 PM »
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Interesting, I will watch out for those.  What servo did you upgrade to ?

Also, what head speed do you run with ?  Do you run straight 100 throttle curves ?
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« Reply #16 on: November 12, 2010, 08:25:35 PM »
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Finally got part of the spares for the 500 along with the other Align 450 spares and Align stuff from Heli pross. Customs of 900 Rs was charged, pack not opened.

Shipping was cheap. Paid 21 USD for 1.571KG EMS.

Yet to get Gyros ESC etc from US (with brother still), Yet to get servos, tail servo, canopies, batteries from HK.

Wish Align was cheaper! A simple piece of plastic/metal costs SO SO much ! Shocked

Heli Pross Box.jpg
Re: HK 500 CMT TT build Thread.
* Heli Pross Box.jpg (87.58 KB, 800x600 - viewed 2810 times.)
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« Reply #17 on: November 12, 2010, 08:57:42 PM »
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Cool cap and tee Smiley
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« Reply #18 on: November 12, 2010, 08:59:18 PM »
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Ya, I generally dont order such items, but they looked too good to avoid  Giggle

Here is the full pic.


bg61557-5_212823714014c6f6f499a76c.jpg
Re: HK 500 CMT TT build Thread.
* bg61557-5_212823714014c6f6f499a76c.jpg (9.32 KB, 280x187 - viewed 2579 times.)
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« Reply #19 on: November 12, 2010, 09:04:07 PM »
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How much were they?
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« Reply #20 on: November 12, 2010, 09:05:21 PM »
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T - 6.56 $
http://www.helipross.com/flying-t-shirt-white-m.html

Cap - 6.56 $
http://www.helipross.com/3g-flying-cap-red-hoc00002t.html

Quality of shirt and cap are very very good, just like the align helis  Wink
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« Reply #21 on: November 20, 2010, 06:28:11 PM »
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More updates: Spares arrive..

1)Bigger power system for my 2 chargers

2)More torque tube spares arrive.

3)I was wondering why customs delayed my parcel by 10 days- Coz this was printed on all the 3 boxes  Bang Head

Turnigy Charger.jpg
Re: HK 500 CMT TT build Thread.
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« Reply #22 on: November 20, 2010, 09:51:00 PM »
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2)More torque tube spares arrive.
Why are you getting the entire sets ?  Why not the boom, TT gears and torque-tube itself, with more pieces of the gears ? There are from HK itself, right ?



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« Reply #23 on: November 20, 2010, 10:11:25 PM »
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Ya all are HK, but HK does not sell separate pieces as of now. + in the event of a crash all the items usually go bad - the boom, torque tube and gears. each set costs 20 USD. Hope fully worth it in the long run.

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=14863
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« Reply #24 on: November 20, 2010, 10:17:50 PM »
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A lot of the times, it is just the gears and possibly small bends in the tail boom.  Getting the gears alone would be a very good idea, regardless of the heli.
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« Reply #25 on: November 21, 2010, 09:38:42 AM »
vinay
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I already have 2 sets of align original gears as well.

The whole set I got coz my Heli is the CMT belt version and not the CMT TT version. Hence atleast 1 set is required for the conversion.

Anyways I was getting 1 set thought I will get 2 more so as to avoid large boxes falling into customs eyes frequently and also its spares I can use. I also read on RCGroups that the ALIGN tail auto rotation gears dont mesh with the TT gears from HK and vice versa. I have to check that out as well.

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« Reply #26 on: November 21, 2010, 12:37:14 PM »
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The torque tubes are slightly bent on all the 3 sets. Looks like they jam packed the units when assembling. The tubes look a little week as well. Hope they take the pitch pump test I usually do. Like coming down at -12 for about 20 feet and immediately give + 12. Rajesh tells its not a good idea when I do that. dont know why  Head Scratching
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« Reply #27 on: November 21, 2010, 12:44:14 PM »
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Finless Bob has videos on how to setup the tail, using the "pitch pump test" (for tail settings).  And he does it well, which is what I follow too.  But you don't go down at -12 (it is more like -9), and you don't go up at +12.  It is more like just making the heli stop its vertical motion by doing a quick punch of opposite pitch (usually like +10 although it can be +12, but for a fraction of a second, preventing the blades from getting loaded and losing rpm).

As long as you have the rubber guide (which you install a little offset from the centre of the tube length), slight bends should be OK.
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« Reply #28 on: November 21, 2010, 12:57:38 PM »
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Anwar not able to find video, link pls.
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« Reply #29 on: November 21, 2010, 01:36:36 PM »
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http://video.helifreak.com/?subpath=finless/6100t&filename=6100tpart2.wmv (You will need to log in to Helifreak.com).

Some of it is specific to the gyro being tested (the Logictech one which is what I am using on Trex 600N), but the testing methodology is generally applicable.
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« Reply #30 on: November 21, 2010, 02:24:14 PM »
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thanks I will go thru that as well as the quark video.
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« Reply #31 on: November 22, 2010, 12:22:31 PM »
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Hope they take the pitch pump test I usually do. Like coming down at -12 for about 20 feet and immediately give + 12. Rajesh tells its not a good idea when I do that. dont know why  Head Scratching

I don't remember telling that and I'm also wondering what could be the reason  Huh?

It is possible that I didn't do it on Atom because I didn't want that kind of load on my 20C batteries. It would also strain the gears, but they should be able to withstand it.

Missing flying, still haven't found the time to fix after the crash.
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« Reply #32 on: November 22, 2010, 12:29:03 PM »
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Same thing, missing your support. I have been flying only last 2 weeks and its boring not to have any heli pilots around  Sad
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« Reply #33 on: November 29, 2010, 07:54:35 AM »
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Whats all this silicone spray - belt lubricating about?

Why does the belt need to be lubricated?

Which silicone spray to be used?

Is it available locally?

Which brand or

If not where to buy online?

Sorry for lot of questions. Couldn't find much answers online.  Grin
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« Reply #34 on: November 29, 2010, 10:23:43 AM »
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Are you talking about this (Van Degraaf effect) ?

http://www.rcindia.org/helis/mini-titan-tailgyro-problem/

If you run into static issues, the best way is to ground the boom.  Applying oil is not a good long term solution.

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« Reply #35 on: December 14, 2010, 08:36:43 PM »
vinay
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Got more spares:  Drool The quarks are so small. One for 500 and another for 450 pro TT. Lipos are 40C and 5C charge. Plan to charge them at 1.5 to 2 C

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Re: HK 500 CMT TT build Thread.
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« Reply #36 on: December 14, 2010, 08:47:53 PM »
anwar
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No fun seeing new stuff alone... you have to post videos of all this being put to good use Giggle
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« Reply #37 on: December 14, 2010, 08:49:58 PM »
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I rarely get time even to touch the sim. Thats why I said the build is going to take a long time. Anyways I will upload the video of the 450 V2 tom
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« Reply #38 on: December 14, 2010, 09:35:24 PM »
vinay
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Just connected the gyro and updated the firmware to 2.03. Tell u what. I had tried moving the HK401 and GY401 very very slowly and they were not able to recognise the angular displacement at that rate. But no matter how slowly I move the quark, its able to recognize it and its turning the servo accordingly.  Clap

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Re: HK 500 CMT TT build Thread.
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« Reply #39 on: December 15, 2010, 04:15:46 PM »
anwar
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This is why I think you will go far in this hobby (and in general) Smiley  It is a simple yet effective test !
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« Reply #40 on: December 11, 2011, 08:50:08 AM »
vinay
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Just realized following align replacement tail shaft wont help. Lots of play. I have to proceed with the stock tail shaft - Its CF, kinda weird. Worried about the safety, but willing to risk.  Wink

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Re: HK 500 CMT TT build Thread.
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« Reply #41 on: December 11, 2011, 08:54:59 AM »
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Oh GOD! I feel so happy to work on align parts. Its so easy. I never found assembling helis this easy and clean. This would be my last HK build on helis.


EDIT: Just realized i was using blue anabond everywhere. Doh!
« Last Edit: December 11, 2011, 09:20:18 AM by vinay » Logged
 

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