|
Interesting larger scale electric video
Here is a video of two larger sized scale electric helis - one uses 520mm blades and the other is bigger as it uses 710mm blades!! http://www.youtube.com/PreddyGS#p/u/1/36caRlrdNYs
Posted on: 11/18/2009 3:55 PM by Author "rotordoc1"
in the forum "Electric RC Helis"
http://www.rcuniverse.com/forum/fb.asp?m=9263269
RE: Swash plate required
Yes, I will PM.
Posted on: 11/16/2009 10:06 PM by Author "rotordoc1"
in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=9259115
RE: Swash plate required
[quote]ORIGINAL: Forgues Research Hey guys, I'm looking for an aluminum swash plate for 10mm shaft. don't worry not for a heli so any good one will do. Thanks for looking Roger [/quote] Do you need one that is for an mCCPM configuration (4 balls at 90 degrees to each other on the outer star) or for a 120 eCCPM configuration (3 balls on the outer star that are at 120 degree spacing from each other). I know where you can get both in Canada.
Posted on: 11/16/2009 8:14 PM by Author "rotordoc1"
in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=9258833
Bell 47
Here is an interesting video of a 50 size model of the Bell 47 flying and doing scale like slide on landings and take-offs. http://www.youtube.com/watch?v=I-Pn4KNf-RU The high oil content 30% heli fuel makes it look like a real one that has a smoke system installed [;)]
Posted on: 11/16/2009 3:27 PM by Author "rotordoc1"
in the forum "Scale RC Helicopters"
http://www.rcuniverse.com/forum/fb.asp?m=9258138
RE: Hobby shop support!
Yes. I know exactly what you mean. Century/Heli-World have become more of a web seller then a service oriented company. And if you get ahold of some one there, they do not seem to know that much about their scale installations and product. You will probably get much more help by calling the Century distributor in Canada. They are listed here on the Century site: http://www.centuryheli.com/dealers/dealernearu/states.html?currentid=1 They are very helpful and seem much more knowledgeable then the US operation.
Posted on: 11/13/2009 9:19 PM by Author "rotordoc1"
in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=9252165
RE: Digital or analog??
Yes, digitals will work with those radios: For a better understanding of servos, I found this article very informative. http://www.leisuretech.ca/index.php/site_navigation/hints_and_tips/servos/ The other articles listed on the left of the screen may also be worth your time reading.[;)]
Posted on: 10/30/2009 2:28 PM by Author "rotordoc1"
in the forum "RC Helicopter Beginners Forum"
http://www.rcuniverse.com/forum/fb.asp?m=9215357
RE: nx50 and tower hobbies
Check out this video of the 50NX: http://www.youtube.com/user/PreddyGS#p/a/u/0/YYycGvHw7QM
Posted on: 10/30/2009 2:22 PM by Author "rotordoc1"
in the forum "Century - Predator, Hawk IV, Falcon, Raven"
http://www.rcuniverse.com/forum/fb.asp?m=9215345
RE: nx50 and tower hobbies
I have a little over 50 flights on mine now and really love it. Probably the best 50 I have ever owned. I could not believe how well priced it is. Last week, I was finally able to sell my T600N that has been looking lonely on the shelf since getting the 50NX. The one I got, was the one that came with the excellent Rotor Tech 610 3D blades and their special tri-flow muffler (sounds mellow while producing great power). The stock damping, at 1800, is great for most flying and really make it smooth. like a good FAI contest machine. But if you want more pop for extreme 3D, just crank up the head speed to around 2000 and install the harder red dampers (HI3181A). If you do install these, you will have to uses a rubber/plastic friendly synthetic grease (I got some Tamiya gease that is used on R/C cars from my LHS) on them, when installing them, or it will be very hard to insert the spindle.
Posted on: 10/30/2009 12:06 PM by Author "rotordoc1"
in the forum "Century - Predator, Hawk IV, Falcon, Raven"
http://www.rcuniverse.com/forum/fb.asp?m=9215032
RE: i dont know im bored
I started later in life (25) with airplanes, and after 10 years with them, I tried helis, and have been a heliaddict ever since. Now at 59, I still am not bored. I have always found something to challenge me. Just as I seemed to get comfortable with one type of flying or series of maneuvers, something else always seemed to come along with a new challenge. Now I am working on fast backward flight (right side up and inverted) so that I can get as proficient at all the maneuvers I could do from starting upright and or a forward flight orientation, now from an inverted and/or backward one. Enjoying the challenge of all types of flight, from scale, to FAI, to 3D, and learning their different optimum set-ups, also helped keep my interest. Now at my age, it is always fun to be able to try and keep up with the younger fellows. It sort of keeps me young. [;)] I also have always enjoyed the technological parts of the hobby. and the study and understanding of the aerodynamics and mechanical aspects of it all, including the challenge of electrics, nitro and gas powered helis. Of course the social aspect, and all the great people one gets to meet while attending different events, is also a big plus. So whenever I started to get bored, I found that looking to another challenge in it and/or travelling to attend some events, always seemed to rekindle my passion for the hobby.
Posted on: 10/28/2009 12:28 PM by Author "rotordoc1"
in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=9209232
large electric A109
Check out this large electric Augusta 109 with retracts doing take-offs and wheel run-on landings. http://www.rcuniverse.com/forum/m_9207438/tm.htm
Posted on: 10/27/2009 8:26 PM by Author "rotordoc1"
in the forum "Scale RC Helicopters"
http://www.rcuniverse.com/forum/fb.asp?m=9207452
Augusta 109
I found this video on youtube of one of my favorite scale heli, the Augusta A109. http://www.youtube.com/watch?v=rHYKR-V0MgM That electric sound great and the slower retract speeds really look rightl.
Posted on: 10/27/2009 8:22 PM by Author "rotordoc1"
in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=9207438
RE: pinion
Here you will find a good spreadsheet application for such calculations: http://www.rcgroups.com/forums/showthread.php?t=232166
Posted on: 10/21/2009 2:26 AM by Author "rotordoc1"
in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=9190099
RE: pinion
That depends on the KV of the motor, the voltage of the battery packs to be used and the rotor speed that you want.
Posted on: 10/20/2009 12:15 PM by Author "rotordoc1"
in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=9188118
RE: Falcon 40 CF Blades
What is the blade length and blade root thickness?
Posted on: 10/15/2009 3:25 PM by Author "rotordoc1"
in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=9175785
RE: Do Not Buy From ... HelicopterWorld.com
So let me get this straight. Last year, you bought all these items. Now, 10 or eleven months later you want them to do something for you? I will tell you why I think there is more to your tale. First you say you are new to helis, so you wanted their expert advice...and you bought 3 expensive gasoline powered helicopters!!!!???? And you wanted them to all be scale helis??? Very hard to believe anyone could be that naive. Many years ago, when I talked to them about starting out, they (along with a number of other shops) all told me to start with a 30 nitro or a 50 nitro. When I asked about starting with bigger 90 sized nitros or gasoline powered helis, they and the others, all advised against it. Of course I am sure that if I insisted, they would have still sold me something bigger. But then, any consequences would certainly have been my responsability, not theirs. You will see the same theme, on every forum on the net, relative to advising newbies. As for starting with a scale machine. They told me definitely not. That I should first start with a pod & boom heli, learn to fly that well then slowly progress up from the more simple 30/50 size scale helis, before even trying to tackle anything as big and complicated as the ones you list here. Again I am sure if I would have insisted, they would have probably sold me what I wanted, and shook their heads as I left. As for your Tow Cobras. That really stikes a cord with me. As many years later, I finally had a Predator Gasser and was very comfortable at flying it. When I inquired about installing it into their Tow Cobra, I was told by them that it could be done, but it would take a lot of cutting out on the exhaust side to clear the large gasser muffler and also that fiting the exhaust system would just be the beginning of all the other extra work required. So I abandoned that idea of using that fuselage. Later, at an event I attended, I saw a fellow with their 60/90 sized H500 fuselage wrapped around his Predator Gasser and he informed me that it fit quite easily, but took a bit of measuring and fitting to get the bulkheads etc, into the right places. The following week I called them and was informed that yes, the H-500's would fit, but would take some doing on my own. So hopefully I will get around to installing mine in one of their H500's one of these days. By the way. If you want easy to install large gas scale helis, then get prepared to pay a much higher price to buy those that are specifically made for specific mechanics, such as the ones from Vario. Of course as they have done all the engineering for you, for intallation onto their own specific mechanics, you will find the hit on your bank account to be a lot more then any of the more universal fuselages from Century.
Posted on: 10/5/2009 10:29 PM by Author "rotordoc1"
in the forum "Electric RC Helis"
http://www.rcuniverse.com/forum/fb.asp?m=9149888
RE: Do Not Buy From ... HelicopterWorld.com
Hmmm...they have always been great to deal with for me also.
Posted on: 10/5/2009 6:21 PM by Author "rotordoc1"
in the forum "Electric RC Helis"
http://www.rcuniverse.com/forum/fb.asp?m=9149230
RE: can someone tell me what this helicopter is
That is a Hiller 12. They were/are manufactured just out of San Fransico. They also have a great museum on site. Note the flybar with paddles like our R/C helis. That is one of the reasons for the Bell/hiller moxing on our R/C heli flybar systems.
Posted on: 9/29/2009 8:31 PM by Author "rotordoc1"
in the forum "Scale RC Helicopters"
http://www.rcuniverse.com/forum/fb.asp?m=9134265
RE: century flexible tail drive???
I agree with Emile. When installed properly, insuring the cable exits any guide tube cleanly (in a straight line at that point) they will do very well in a two blade installation. I am also assuming one is operating at the lower rotor speeds that are more ideal for scale flying, and not at the higher rotor speeds that are more conducive to aerobatic flight.
Posted on: 9/21/2009 12:38 PM by Author "rotordoc1"
in the forum "Scale RC Helicopters"
http://www.rcuniverse.com/forum/fb.asp?m=9112369
RE: 30 power
Yes, the OS37 should drop right in. It gives my Hawk Pro a similar power to weight ratio to the Sceado Evo I had.
Posted on: 9/15/2009 6:07 PM by Author "rotordoc1"
in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=9098297
RE: any advise on best kit?
As you are probably aware, your selection is rather endless, as most nitro helis today, from the smaller & lower cost OS-37 powered 30 size nitros, like the Century Hawk Pro, to the far more expensive & large gasoline powered units, will easily be able to bring anyone from basic hover training to well into any type of flight he wants - scale, sport aerobatics or 3D. The big difference is cost to get going and to operate. The main cost is not the heli, but rather the radio gear and gyro system. Then the motor and exhaust system, and the subsequent fuel they will burn. Starting with the proper radio system means you will not have to upgrade later, as you move into bigger or better helis. Your biggest part of the investment of getting a nitro sized heli in the air will be the electronics. So first, I would consider the radio/gyro you will purchase. Doing this properly at the beginning, will save you a lot in the future. So at least start with a good 7 channel radio from Futaba, Spectrum, JR, Airtronics or a similar top name manufactuerer. One that comes with 2.4 Ghz and decent digital servos that are proven y be dependable in the higher vibration environment of the nitro heli (e.g. at least like the Futaba S-3151's). Then add decent gyro system like the Futaba GY-401/9254 system (p.s. Don't scrimp here). Now the motor/exhaust will depend on the size of heli you want to start with. Something like the Hawk Pro with the OS37 is a relatively low cost combination that is easy to build, easy to set-up, with low maintenance over 100's of flights, that is easy to fly in hover, foreward or backward flight and/or most any type of aerobatics. You might only want more power if and when you mobe up to relatively extreme 3D flying. Then you may just change out the engine to a 50 size. There are also a large number of scale kits for these mechanics available. This type of combination also leaves you more money initially to spend where it really counts - on the radio/gyro equipment. From there on up, the cost of the 50 size, or 90 size, or gas sized heli combinations go up, for initial cost, for maintenance cost, for crash repair cost on to the fuel cost for running them. I have calculated that it costs me $4.74 for the 30% nitro fuel per 9 minute flight on my 90 sized heli, as compared to $3.57 for my nitro 50, as compared to only $2.84 for the Hawk Pro. Fortunately today, most any nitro heli, from any of the proven manufacturers, will prove to be a satisfactory choice, as they are all up to the task. Some just cost less and have less maintenance and assembly issues. That is why I recommend the Century Hawk Pro/OS32 or their new NX-50/OS-50 Hyper combination to most in your situation. FOr scale you will also find they have a large selection of scale bodies for their Hawk, or for their 50 or 90 mechanics.
Posted on: 8/26/2009 2:06 PM by Author "rotordoc1"
in the forum "Scale RC Helicopters"
http://www.rcuniverse.com/forum/fb.asp?m=9046844
RE: bigger heli
Bigger is always better to a point when stepping from a mini heli. I have a number of 250 size & 450 size electric helis that now sit on the shelf since I got my first larger electric - the Century Swift 16. Now I have 3 Swifts, including their bigger Swift 620SE. I even prefer them to my 50 and 90 sized nitros. A Swift 16 can easily be set-up for use with 4S or 5S or 6S packs. Now that the price of the larger battery packs have dropped considerably, a Swift 16 set-up would cost about the same as a one of the better 450 sized helis to get into the air. As it is much bigger (uses 520mm to 560mm blades) it has a lot more presence in the air, is much easier to maintain orientation (this means far less crashes), it handles the wind much better, uses standard size servos and is relatively low cost. I feel it is the ideal size for the step up from the CX types, as they will also then have a radio system that can take them into any of the larger electrics and nitro helis.
Posted on: 8/18/2009 1:52 PM by Author "rotordoc1"
in the forum "RC Helicopter Beginners Forum"
http://www.rcuniverse.com/forum/fb.asp?m=9023495
RE: Autorotation question
One of the main purposes of the tail rotor, is to counter the torque from a powered mainrotor. In an autorotation, there is no power being aplied to the mainrotor from the motor, hence no torque to counter. Consequently, some auto systems do not have the driven tail option, so in an auto, the tail fin becomes a passive yaw control that will cause the tail will follow the main body, much like an airplane. The driven tail system was initially designed to give active yaw control for performing more aerobatic autos...e.g. pirouetting autos or to enable the heli to fly backwards in an auto. But driving the tail rotor will consume more of the kinetic energy from the mainrotor in an auto. One can easily do autos, while performing a 360 degree turn with a non-driven tail auto system, as long as one keeps the heli moving forward during the turn, and turns like an airlplane, using aileron control. The 180 degree turning auto was a part of FAI/F3C competitions for 10 years before the first helis came out with driven tails a number of years ago.
Posted on: 8/16/2009 12:51 PM by Author "rotordoc1"
in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=9020339
RE: Another Noob
I like your list, For other shops in the USA, you should add Hel-World to your good shop list. But they are more into the bigger helis. I have always had good service from them.[:)] I could list other good ones in Canada also.
Posted on: 7/30/2009 3:03 PM by Author "rotordoc1"
in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=8976689
RE: Scale Fuselages for electric T-rex 600
There are a number of fellows on the RR scale forum that are using the Century 50 size fuselages on their T600's. http://www.centuryheli.com/products/fuselages/index50.html?currentid=442 You can buy them painted or unpainted. I have built a number of them over the years for my Swift and my nitro and have found the fiberglass and paint quality to be the best I have ever seen.
Posted on: 7/29/2009 1:39 PM by Author "rotordoc1"
in the forum "Scale RC Helicopters"
http://www.rcuniverse.com/forum/fb.asp?m=8973858
RE: Blade Spacers
A lot will depend on what size of heli. It may work on smaller 250 sized helis but definitely not recommended on larger ones The washers used in blade grips are always very large (with a diameter at least as big as the end of the grip) because the load has to be spread out over that area in order to insure the integrity of the blade root when flying. If you are talking spacers for main blade grips, like these; http://www.heli-world.com/detail.aspx?ID=9351 they are available from a number of different sources.
Posted on: 7/17/2009 8:45 PM by Author "rotordoc1"
in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=8942302
RE: Is it easier to fly gas powered Helicopter's?
Yes, it is the size that makes all the difference. A 30 nitro heli flies the same as an electric of the same size (e.g. my Century Swift 16) but my Swift 16 on a 5S pack has a much better power to weight ratio and lighter disc loading (results in better autos) then did my nitro Raptor 30. Yet my Swift 16 cost less to get airborn then did my T450SE and flies a lot better. My Swift 620SE is the same size as a 50 nitro and outflies any of the 50 nitros I have ever had.
Posted on: 7/15/2009 12:52 PM by Author "rotordoc1"
in the forum "RC Helicopter Beginners Forum"
http://www.rcuniverse.com/forum/fb.asp?m=8935598
RE: ccpm vs. eccpm
Like many accronyms, over time they can become so miss used that they can get confusing. CCPM actually stands for Cyclic Collective Pitch Mixing. It is required on ALL CP type of helis with a sliding swashplate. It was initially used to define helis that used a sliding swashplate mix and transfer the collective servo and cyclic servo commands to the blade grip control system that is above the swashplate (most helis in use today use this system) to others that used a fixed (non-sliding) swashplate for cyclic commands to the blade grips while using a seperate system (e.g. sliding washout hub or flybar carrier) to transfer the collective commands. Hence, no Collective or Cyclic mixing anywhere. (By the way, these are the only type that where entirely free of interaction). These type were seen in the past on the German Schluter (now Robbe) machines, on the Kalt and some TSK machines and the Concept series from Kyosho. So the CCPM (sliding swashplate) systems, as Rafael points out, were either mixed by a mechanical system (properly refered to as mCCPM) below the swashplate in the heli or by the electronics in the radio (eCCPM). For all intents and purposes, though there were a number of Europen manufacurers that used eCCPM systems back in the earlier days, most helis we saw here in N/A where mechanical mixed sliding swashplate units from Japan or the USA. When the term CCPM really became confusing, was when JR introduced their Ergo series of helicopters. These where the first "volume" sellers in N/A that used the 120 degree electronic mixing system. Unfortunately their advertising spin doctors only referred to it as a their new CCPM system. So many here. for years (and some even today), thought/think CCPM means an electronic mixing system. That is why many of us long time heli flyers prefer to use the proper terms for the sliding swashplate system - as an eCCPM or. like your Raptor. an mCCPM system. To conclude, if your heli uses the swashplate to slide up and down the mainshaft to give collective inputs to the head, and tilts for/aft & left/right to give cyclic commands to the head, then it is a CCPM control system. If that systems uses mixes in the radio software to tell the swashplate what to do, using mixing between three servos, then it is an eCCPM system. If it uses mechanical linkages in the heli (like your Raptor) to mix the commands before they go to the swashplate (where each servo will only perform one function) then it is an mCCPM control system.
Posted on: 7/12/2009 5:05 PM by Author "rotordoc1"
in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=8926933
RE: What's the most popular 50 size nitro Heli?
The most popular here are the T-600, the JR Vibe and the Century Raven 50, which is now replaced by their just released NX-50. I have had the Raven for many years and have found it to be a very precise flyer with no issues, that is also very low maintenance. It has resulted in me ordering the new NX-50.
Posted on: 7/10/2009 5:01 PM by Author "rotordoc1"
in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=8922349
RE: Century Bell 222 with Trex 600E
On my scale ships, I try to get the head speed down around 1500 to 1600. You may be able to do this by running your ESC at 80%, but I do not like running them at less then that because then they become less efficient (the other 20% is disipated in heat). If you cannot get it that low with an 80% esc setting, then go to a lower count pinion, or a motor with a lower KV rating or a lower voltage battery pack or a combination of all three.
Posted on: 7/8/2009 12:35 PM by Author "rotordoc1"
in the forum "Scale RC Helicopters"
http://www.rcuniverse.com/forum/fb.asp?m=8916171
RE: Whos the best online vendor for RC Heli
I have always been well served by these shops in Canada for my Century Helicopters: www.pivotalhobbies.com www.norburnrc.com www.greathobbies.com good prices and good service.
Posted on: 7/7/2009 12:43 PM by Author "rotordoc1"
in the forum "RC Helicopter General Discussions"
http://www.rcuniverse.com/forum/fb.asp?m=8913494
|
