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HomeScale✈️AircraftScale HeliScale Helicopter Main Discussion › My first Scale : Hughes 500 D " TC's Chopper - Magnum "
06-01-2011 07:53 AM  8 years ago
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Tiltrotor

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Poitiers,Vienne - France

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My first Scale : Hughes 500 D " TC's Chopper - Magnum "
Hello everybody ! Here I am ! After long researchs around, on this forums and on others, I finally dicided to start !

Firstly, let me tell you I'm a young 16 years old French Student, so my english can be quite weak sometimes ..

Here is the same thread in french : http://www.france-helico.com/viewto...t=41224#p383938

So, I received the first parts for the transformation of my Caliber 30 in 50 class heli with 5 bladed rotor system.

I started to look after the rotor system with a pentablade rotorhead , a Double Cats one, bought at SkyHunterHobby ( very good customer service ) with 5 X 600 mm Scale Blades from TF Model ( Smart Model ). I've also directly bought a Vario swashplate ( for 5 blade ) and a swash follower from teh same brand ( Vario ), cause the swash they sell was made for T-REX CCPM System, and can't mount on my Caliber.

So, before all, let me talk about this head. Very beautiful, elegant in it flat black livery, made of 7075 Aircraft Aluminium and steel. Ball bearings and Thrust bearings are clean, turn smoothly, it's not INA or SKF bearings quality for sure, but seems to be OK, we'll see with the time how they handle the duty. Blades grip seems to be strong.

So, all good you would say .. Not exactly. The most hard part to built, the hub, was not perfectly drilled. The hub, which attach 5 small spindle shafts doesn't turn true .. I see the difference on spindle shafts, so imagine when the blades will be mounted on it ..

So, I decided to contact the team that develop this head ( Young Wang, from Double Cats.. A great guy ! ) he told me that they currently works on a new way to drill the new hubs , and that when the new hubs will be ready, he'll send me a new one. Ok... I also change the brake plate for a bigger one, a Vario, more realistic on a Hughes 500 D.

The blades are really ugly finnish, but they are PERFECTLY balanced ( five ! ) and got the same CG, really nice thing ! I think I will paint them in flat black coulour with yellow stripes on the edge of teh blade.

For my next Order, I'll buy the tail boom, tail drive belt and other stuff to convert the Caliber 30 in a 50 class machine.

About engine, I hope that my actual Webra 36 H will do the job ( 1,51 hp ).

I'm hurry to test all that stuff in flight, I'll come frequently here to post all news and evolution more or less importnat to follow the built of this scale.

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06-01-2011 08:13 AM  8 years ago
VKGT

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Sanford, NC

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Looking good! I don't know anyone with a Scale ship using Caliber mechanics so I'll be keeping up with your build!
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06-01-2011 09:00 AM  8 years ago
Tiltrotor

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Yeah, I hope it'll works with a Kyosho mechanics. Measurements seems to be OK but .. we never know.

I saw you're military ! You're lucky to fly in those big ships that are Chinooks !
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06-26-2011 03:48 AM  8 years ago
toast

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Taranaki - New Zealand

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Hi Tiltorotor. Any word on the new hub? I have just bought one of these for a Trex powered Mil-24. Decided to bolt it onto my Hughes 500 to test it out and see how well the TF blades work. I have the same problem as you. Spindles are not aligned and one was so loose it had almost 1mm play in it! Very disappointed as it was quite expensive to buy. Will get hold of my local hobby shop and see what they can do but I'm interested to see if you ever got anything back from Double-cats? I struggle to understand why manufacturers still produce and sell gear that wont work.

Cheers
Brett
TT50, TT90, Cal5/Airwolf, TT50/Jetranger, Zoom400/H500, Trex600/Apache, SSM UH-1, and more!
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06-26-2011 10:34 PM  8 years ago
Tiltrotor

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Hi Toast !

Yeah, in fact he said the drilling method was not good, the new hubs are ready to be anodized and according to him, he will sned them to the dealers this week. I think they will give you a free one.

Conscerning my project, good news I've bought missing parts and the Century fuselage so, some news will come soon !
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06-26-2011 11:47 PM  8 years ago
toast

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Taranaki - New Zealand

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Thats great news! Do you have Young Wangs contact info so I can get hold of him? PM me if you have. Cheers, Brett.TT50, TT90, Cal5/Airwolf, TT50/Jetranger, Zoom400/H500, Trex600/Apache, SSM UH-1, and more!
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06-27-2011 04:42 AM  8 years ago
Mojave

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Palos Verdes, Ca. USA

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If that head doesn't work for you, might wan to try this one...

All helis and planes have an expiration date stamped on them...you only find it after you crash!!
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06-27-2011 06:06 AM  8 years ago
toast

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Very nice! And where would one purchase such a lovely piece of kit then?TT50, TT90, Cal5/Airwolf, TT50/Jetranger, Zoom400/H500, Trex600/Apache, SSM UH-1, and more!
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06-27-2011 06:28 AM  8 years ago
Mojave

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Sorry, forgot that little detail... Century helis in California. It has the ability to be fit on a 10mm or 12mm mainshaft, with the supplied sleeve.

http://www.centuryheli.com/products...M¤tid=472
All helis and planes have an expiration date stamped on them...you only find it after you crash!!
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06-27-2011 08:30 AM  8 years ago
Tiltrotor

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Poitiers,Vienne - France

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Ouch , 600 dollars...

She is ugly for a scale, the spindle shafts are waayy too long.

@toast: have you seen my PM ?
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06-27-2011 08:52 AM  8 years ago
toast

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Yep, replied by email.TT50, TT90, Cal5/Airwolf, TT50/Jetranger, Zoom400/H500, Trex600/Apache, SSM UH-1, and more!
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06-27-2011 04:18 PM  8 years ago
Star1

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San Jose CA

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I have the same head with the same blades on a trex 600. The plastic blades are very soft and flexible, too flexible in fact. If you plan in just hovering it you will be ok with the plastic tf models blades. But if you plan on forward flight start looking at other blades that are stiffer. When you get the helicopter at a certain forward speed the blades start to flex really bad. The problem is that not all the blades flex the same and you end up with really bad vibrations that are similar to really bad turbulence. I tried the blades on a four blade and five blade and got the same results on both. If you hover it in a windy day you will also have the same results because allot of wind will be passing by the blades. You may be wondering how much do they flex, well on my helicopter the tip of the blades would be at times about two inches apart. No air and they were perfect, tracking dead on. Add air over them or a fast cyclic input and they would flex up to two inches. Good luck with your set up.
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06-27-2011 05:52 PM  8 years ago
iHover

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Berne , NY

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Interesting info on the blades. I'm working on a 700 size 500E and have 5 of the 700mm TF Models scale blades. I should have the mechanics ready for a test hop in a few days. I'll be sure to keep an eye on the bladesYou had me at Hover
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06-27-2011 06:03 PM  8 years ago
Mojave

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Star1, what was your head speed? Head speed will effect the stability of the blades. Alot of folks are running these blades and really like them. I do agree that they are very flexible, but that also lends to the scale realism.All helis and planes have an expiration date stamped on them...you only find it after you crash!!
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06-27-2011 06:06 PM  8 years ago
Hoverup

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Golden Gulf Coast - USA

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Sorry, forgot that little detail... Century helis in California. It has the ability to be fit on a 10mm or 12mm mainshaft, with the supplied sleeve.

http://www.centuryheli.com/products...M¤tid=472
These heads have one big drawback. The supplied reducer that allows the heads to be used on a 10mm main shaft is not concentric, leading to severe out of balance problems when spun up. I had to have a machinist turn a reducer to fix the problem with two of mine. One was a four blade and the other was a five blade head.

HTH
Cheers - Boyd
AMA 80393
IRCHA 3355
LSF 853
Major USAF
Retired
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06-27-2011 11:59 PM  8 years ago
Star1

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San Jose CA

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My head speed was 1550. I went higher and lower and I got the same results with the plastic blades. I do agree that the tf models plastic blades look cool. Very nice and scale looking. But my helicopters are not hanger queens and they should fly the way they were intended to fly. Blades are suppose to flex, but the tf models blades flex beyond what is acceptable. Centrifugal force is going to help, but in a scale 4 blade or 5 blade head you are not running 3d head speeds. Again, the blades work good when hovering or at a slow forward speed with little to no wind.
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06-28-2011 01:21 AM  8 years ago
iHover

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Berne , NY

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I think the recommended HS for these blades are somewhere between 1200 - 1300. If they dont fly they are going back to the vendor.You had me at Hover
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06-28-2011 01:56 AM  8 years ago
Mojave

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Thanks for the info Boyd. I'll chuck the reducer sleeve in the lathe and check it with a dial indicator. My other diamond 3 blade head was fine. Maybe this was an issue in the early production runs. Either way, I appreciate the info. I had a 3 blade head from another mfr that the bore was not concentric and it gave me a bad vibe problem. I sent it back.
Barry
All helis and planes have an expiration date stamped on them...you only find it after you crash!!
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06-28-2011 10:47 AM  8 years ago
Tiltrotor

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Poitiers,Vienne - France

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According to Kin, ( the smart model guy who makes the TF blades ) these blade in 600 size got their optimal performance at 1350 RPM exactly.

About the rotorhead, don't be too anger, be patient, Young Wang told me the Hub are always in the factory in anodizing and they will be send throug the week.
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06-28-2011 04:00 PM  8 years ago
Star1

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San Jose CA

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1350 is too low, the tail won't hold a 4 or 5 blade head. I think Mr Kin had a good idea with the blades, but he needs to make them a bit stiffer and they should work great. If you look at the Tf Models videos you will see that when they use this blades they are only hovering. If anybody else has tried this plastic blades and they had good results during fast forward flight please share your set up.
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HomeScale✈️AircraftScale HeliScale Helicopter Main Discussion › My first Scale : Hughes 500 D " TC's Chopper - Magnum "
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