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zetecmk2
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Joined: 05 Feb 2012
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Location: sussex
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 Posted: Mon Feb 06, 2012 4:37 am
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i flew mine today with the skyking rear rotor. it is better....then i crashed into a tree and snapped the rear motor and holder off....all glued together again!!  |
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tattie bogle
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Joined: 04 Mar 2012
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Posted: Sun Mar 04, 2012 5:33 pm
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hi this is my first post as i have just joined , i have had the t-34 for a week now and it's been great , it is my first helicopter and as a beginner it's perfect the yard i fly it in is pretty well protected from wind so control and forward momentum is not bad although i have ordered the skyking rotor so i hope things will improve a bit more , i haven't really had a proper look around but is there a thread for all the mods and improvements ? |
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matelot
Extreme 3D
Joined: 09 Jan 2012
Posts: 106
Location: France
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Posted: Sun Mar 04, 2012 6:57 pm
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Welcome, tattie bogle. Try page 5 of this very thread - there's a few pics.
I inverted my tail rotor motor and used the larger rotor blade. Immense difference in calm weather, but anything over five knots it doesn't like it. Not really built for it.
The other option is not to invert the tail motor, but operate the toggle back-to-front...
But it's good experience to take the thing apart.
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tattie bogle
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Joined: 04 Mar 2012
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Posted: Sun Mar 04, 2012 9:53 pm
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thanks matelot once i feel a bit more confident i might get a bit more in depth with mods  |
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SkyHigh
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Joined: 05 Mar 2012
Posts: 27
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Posted: Mon Mar 05, 2012 1:11 am
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Hello Matelot I am also thinking of doing your modification to my T34 helicopter. Where do I start how difficult is it to take apart. What do mean invert the tail motor. Please help. |
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tattie bogle
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Posted: Mon Mar 05, 2012 1:41 am
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| SkyHigh wrote: | | Hello Matelot I am also thinking of doing your modification to my T34 helicopter. Where do I start how difficult is it to take apart. What do mean invert the tail motor. Please help. |
i believe what they mean is at the moment the tail rotor lies horizontally to invert it means to turn it so it sits vertically . |
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matelot
Extreme 3D
Joined: 09 Jan 2012
Posts: 106
Location: France
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Posted: Mon Mar 05, 2012 1:56 am
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Hi, SkyHigh. First of all, I'll help where I can, but this is not my mod. I just followed the threads, guidance and diagrams.
Seems like there are two tail rotors that you can use - a Sky King, or one from a Double Horse. I can't remember the part numbers off-hand. Fitting the former means undoing the tiny screws holding the top of the tail rotor casing together, and swapping the blade (needs a sleeve to grip.) It's all on page 5 of this thread.
With the Double Horse blade, it's slightly bigger, but thrusts in the opposite direction. Therefore all the screws holding the tail rotor assembly and motor need slackening, and the motor turning over (inverting) 180 deg. The rotor will now be underneath the tail boom.
When you push the right stick forward, the tail will lift and you'll gain forward flight.
The other option is to fit the Double Horse rotor and don't invert the motor. But then you'll need to pull the stick backwards to go forwards...
The mod is quite quick to do (the only tools I used were miniature screwdrivers, and insulating tape to sleeve the rotor), but the screws are tiny and fiddly - put them to one side safely. It's good experience taking these things apart and seeing how they work.
Hope that helps, and there's plenty of info about these mods on this site, and also YouTube videos.
Cheers
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matelot
Extreme 3D
Joined: 09 Jan 2012
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Location: France
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Posted: Mon Mar 05, 2012 2:00 am
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| tattie bogle wrote: | | SkyHigh wrote: | | Hello Matelot I am also thinking of doing your modification to my T34 helicopter. Where do I start how difficult is it to take apart. What do mean invert the tail motor. Please help. |
i believe what they mean is at the moment the tail rotor lies horizontally to invert it means to turn it so it sits vertically . |
Nope. It means to turn it upside down, and to do that so it fits the tail motor, the motor has to be slung underneath the boom. You can't just put the rotor blade on upside down.
If all propellers, rotors, screws etc. turned the same way, life would be easier. But they don't. 
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SkyHigh
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Joined: 05 Mar 2012
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Posted: Mon Mar 05, 2012 2:07 am
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Thank you matelot great indepth information. Very well explaned. |
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matelot
Extreme 3D
Joined: 09 Jan 2012
Posts: 106
Location: France
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Posted: Mon Mar 05, 2012 2:10 am
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I bought my tail rotor blades off eBay and they came from the US in a few days.
http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=390310975885
Tail Rotor Blade for Syma 9093 9083 Dragonfly rc heli.
You'll have to move the rear skid forward if you fit the DH rotor. Mine's refastened with a cable tie until I can re-drill a hole in the boom.
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tattie bogle
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Joined: 04 Mar 2012
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Posted: Mon Mar 05, 2012 3:10 am
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| matelot wrote: | | tattie bogle wrote: | | SkyHigh wrote: | | Hello Matelot I am also thinking of doing your modification to my T34 helicopter. Where do I start how difficult is it to take apart. What do mean invert the tail motor. Please help. |
i believe what they mean is at the moment the tail rotor lies horizontally to invert it means to turn it so it sits vertically . |
Nope. It means to turn it upside down, and to do that so it fits the tail motor, the motor has to be slung underneath the boom. You can't just put the rotor blade on upside down.
If all propellers, rotors, screws etc. turned the same way, life would be easier. But they don't. |
thank you for the correction matelot just as well someone knows what they are talking about |
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SkyHigh
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Joined: 05 Mar 2012
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Posted: Mon Mar 05, 2012 3:54 am
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Hi again Matalot I checked out your sugestions to look on youtube for these mods, and found out there are loads of videos by the inventer of this rotor system, including using two rotor housing. I guess Matalot is not the onlyone who knows what he is talking about. |
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tobysaunders
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Joined: 29 Jan 2012
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Posted: Sun Mar 11, 2012 7:23 pm
Post subject: Doing the Rear rotor mod... |
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You guys seem like you are enthusiastic about doing these mods!!!
tattie bogle + skyhigh
That's a good thing, but you need to be aware of the things that could go wrong when you do the mod!
The first thing is, with the greatly increases foward speed, you are not going to stop quickly, so forget about turning whilst moving forward, or you'll get a blade strike, the rotors will cut out, and the heli will fall! I'd suggest, for the first few tries with a bigger rotor, turning the f/b sensitivity right down on the remote, you won't regret it, the first time i flew with a bigger rear rotor, i flew into a hedge, and broke my new rotor clean in half!
The other thing is that, if you haven't already, you are probably going to need to replace the screws holding the gears onto the main rotor shafts. I had to do this on both of my helis after a small crash, the helicopter simply wouldn't take off, the bottom rotor span too slowly! If you get this problem, which you likely will at some point: Check out here: third from the bottom!
Good luck and post again if you get any problems; T34 Helicopter's (the dude who came up with the rear rotor mod) Youtube channel is here Check out the first part of his "double rear rotor" video trilogy for the tutorial for inverting the rotor for the Syma Dragonfly rotor!
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SkyHigh
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Joined: 05 Mar 2012
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Posted: Sun Mar 11, 2012 7:57 pm
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Good info tobysaunders, you say forward speed is greatly increased but forget about turning, the link you provided there is a Double Tilting Blades mod also Bendy Blades mod with T34 Helicopter guy demonstrating fast turns. And blade strike prevention, I did read on his page suggesting changing the standard screws to longer ones as these do break. Not sure how he comes up with these ideas, but agree with you he has greatly increases forward speed. |
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tobysaunders
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Joined: 29 Jan 2012
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Posted: Mon Mar 12, 2012 11:58 pm
Post subject: And Again |
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Sorry about that link... If you want the tutorial for the inversion of the rear rotor gousing for the Dragonfly rotor, it's here, Watch from about 5mins in to near the end, you'll know when to stop. (Credit to T34Helicopter here!)
I agree with him about the longer screws... I've done my own heli with slightly longer screws, but I did my dads first, and did his with slightly shorter ones, and that one has since broken again... :/ When I get the time, i'll make a video tutorial for fixing the bottom rotor problem... My text one is on the previous page. |
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