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Hirobo Nitro Helicopters Hirobo Freya Evo Eagle Helicopters Discussion |
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07-20-2013, 10:38 AM | #21 (permalink) |
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Join Date: Nov 2007
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Dave,
SO, the gyro type which you have or can be used is CopterX CX-3X1000 (GY080), manual available here:- http://www.ky-model.com/copterx/cx-3x1000_manual.pdf |
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07-28-2013, 11:40 PM | #22 (permalink) | |
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Join Date: Sep 2011
Location: Central Ohio
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Quote:
Have you worked on the Shuttle conversion yet? I have 1 I may go FBL. Thomas
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Airwolf Trex 550/600, Long Ranger Trex 600, MD500 Stretched 600 (in progress), 800 Trekker Last edited by Tman49; 07-28-2013 at 11:43 PM.. Reason: be specific |
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07-29-2013, 07:10 PM | #23 (permalink) |
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Join Date: Jun 2011
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Dan , that is the gyro I am using , u can get them at WOW hobbies for 41 dollars
Tman, have not had any luck finding a 500 FBL head (8mm shaft) might have to buy a new one . Looking to see if Hobby King has a complete head for sale like the one that they sell for the 450 helies . Might have to look into buying an Align unit If not , I will look to see if I can get just a swash driver and convert the stock head I will keep you posted as my ZXX is still my favorite heli to just throw around the sky I don't know why that it , I guess its because I have had it so long and I have flown it so much |
08-24-2013, 01:05 PM | #24 (permalink) |
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Ok, firstly, my Sceadu is converted to FBL but not yet flown. Weather is carp here, its a bank holiday weekend so its VERY wet and the field is being used tomorrow anyway!
I bought a TRex clone 550/600 head off the 'bay, but found that it offset the pitch centre too much as the rods supplied were too short for the Sceadu shaft/swash. I bought 71mm Turnbuckles which corrected this perfectly, and gave a good amount of thread into the ball ends for security, and will be a damn sight easier to adjust tracking. So far have only managed to get the programme box working so set it up on that. I got the USB lead and downloaded the software but despite it finding the USB in whatever COM socket I put it into and lighting the Gyro up it remained on "not connected". I also have a CX-3X2000 on the way and have obtained (quite easily from a HK supplier) and have here a 8mm shaft TRex 500 clone complete head. The issue to resolve for a Shuttle is that the 500 blade grips are too small for Shuttle blades, and I have not had any time to play/search around for a solution yet. I have all the parts for a 500 so may make a FBL one before I try the Shuttle as all mine are FB. Unusually for the UK I have access to a large hall and so can fly 500's indoors regardless of weather, really useful in the winter (or a bank holiday weekend ). |
08-29-2013, 01:03 PM | #25 (permalink) |
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Finally managed to get the Sceadu FBL (HPM not CCPM) into the air.
Along the way I changed the roll and elevator servos to more powerful ones. As what was there was JR, and the new were Futaba, that meant resetting the servo and gyro directions. (GGGRRRRR!!) After a few moments hovering perfectly well it suddenly lost blade tracking briefly, then settled down again. Looked it over on the bench but could not see anything, so started it again and went out to patch. Up into hover and all OK. Keeping it low, I moved it around a bit, figure S's, all OK. The wind gusts were ballooning it a bit from time to time, and it got above head height twice, otherwise all seemed well. Then it wobbled the tracking again, then cleaned up and tracked OK, so carried on hovering very low. After about a minute of this (seemed a very long time) it suddenly powered downwards, hard landing. Had it been higher it would have broken the undercarriage legs, fallen over and probably bent the shafts and more. Cut the engine and as it slowed I could prove it was dropping onto extreme negative pitch. Back on table and canopy off, and the pitch link to servo arm had come off, and inspecting the plastic link ball end showed it had split across AND in half the other way, thinning the material (never seen that before). This Heli was a 30 originally, so only had single links throughout. Oddly, while the 50 doubles some links to push pull, it DOESN'T double the link that had failed! So, too weak anyway, OR just through age?..............not certain, but the failed link might with hindsight have been ten to fifteen years old (as little used but stored heli before my time)!! I had new parts in the spares box so have just made up an all new link. So, was this failing slowly the cause of the blade tracking variation or is it something else that strained the link too much? |
08-29-2013, 01:21 PM | #26 (permalink) |
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You need strong servos as u only have one driving aileron, pitch and Elevator where as with CCPM you have three doing all of them together
Also both of my Sceadus have push pull linkages and I think that is a must ... As any slop in the system will pull the blades out of track Also , I had the same blade tracking problem ... Chased it for weeks , changed bearings , change dampers ,blade grips , I was at my whits end .... Then one week I put a good set of flybarless blades on and it instantly cured the issue !!!! If you are using fiberglass or carbon regular blades they will not work on this conversion FBL blades have the center of gravity moved out closer to the tips and for some reason this makes them track Dave Last edited by Dcasole; 08-29-2013 at 07:02 PM.. |
08-30-2013, 07:07 AM | #27 (permalink) | |
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Quote:
OK, thanks, will not try to fly again till I have FBL blades fitted! BTW, someone said that FBL blades have a more forward CG in the chord. |
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08-30-2013, 08:43 AM | #28 (permalink) |
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You are correct on the pitch link but what I am talking about is the elevator and the Aileron Push Pull system, any slop in that with a flybarless will cause issues , maybe this is why your link failed , when the blades went out of track it put to much stress on the link
Like I said in my previous post , when I first converted my Sceadu #1, I put on Carbon Fiber Align Blades ( NOT FBL) and the heli flew fine , no blade tracking issues at all Then I converted Sceadu # 2 and my problems started ...this heli had Marvirick Fiber Glass Blades , Blades would blow out of track if i gave it any elevator or alerion Both Helies have same FBL controler , Same Head , Same Servos etc etc Tried my Align blades on # 2 and it was better but they would still blow out , started with replacing things like the grips, bearings, dampers, thrust bearings , spindle etc Nothing worked , I was pulling my hair out ... then last week a friend gave me a set of ZIG SAW FBL blades to try and BAMMMMMMM that was it , put the heli right up in the air and started to beat it around ... had no issues whatsoever Also the blades need to be pretty tight in the grips otherwise you wil get some lead - lag that will cause them to go out of track Why the first heli flys fine with just plain carbon blades is beyond me . On my 450's that are FBL I have the same problem , if i try to use cheap fiberglass blades the wobble and go out of track , I put on 3D FBL blades and they fly fine .... Good luck and let us know how it works out |
09-03-2013, 11:44 AM | #29 (permalink) |
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Just when I thought the blade delivery would not come before I went off for the last flying session I will get this week and well into next, they came! Thunder Tiger Flybarless.
Firstly, I checked the static balance point along the blade compared to a non-FBL TT set. May have been a couple of mm, nothing significant. The FBL blade looks to have a more forward wide point in the chord, I have no way to measure balance along the blade across the chord!Very different tip shape Took them to the field and fitted them there. Flew tentatively but reproducing the conditions when it lost blade tracking/pitch alignment, and it seemed clear. Landed and looked it over, nothing abnormal to see, so up again and this time into circuits. Nothing too extreme, though not rotor hanging but banked over turns. Just once I thought I detected a trace of the blade wobble/track issue, but then I was nose well up flying into my own turbulence braking/halting it into a hover. Progress then! Sadly that is as far as I get now for quite a few days!! Last edited by bravedan; 09-03-2013 at 12:02 PM.. Reason: spelling |
09-03-2013, 06:11 PM | #30 (permalink) |
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Great news !
I run my blades pretty tight in the blade grips as this seemed to stop the little bit of tracking error you are seeing I flew mine again this week and just as you I was very careful ... Started to take it higher and faster as the day progressed and but the end of the day I was convinced that it was fine and pushed it hard No sign of trouble .... I am happy ! I am looking at a kit hirbo sells to convert my EVO over to CCPM Dave |
09-11-2013, 04:25 PM | #31 (permalink) |
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What gyro rates are you using please? I have Yaw at 50% now after flying today, with the other rates at 40%, but think I need a little more as its not quite as solid as I'd like.
Picked up an all metal flybar head and tail Shuttle last week while away, flew that today. It's frightening how much all those (QuickUK) parts add up to, I'm glad it does not reflect in the secondhand price!! I had to put a new tail pitch lever on, and that alone was £ 24 inc postage. |
04-23-2014, 02:04 PM | #32 (permalink) |
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For the record, the first of my FBL Sceadus (HPM not CCPM) is still going, and still on a cheap C3X1000 Gyro. Today was a bit windy but in a direction where the trees upwind create a lot of turbulence and swirl.
The video is 1080HD so set that and full screen.. |
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