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Old 11-21-2015, 03:53 PM   #221 (permalink)
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Wow!! What a cool project. Can't wait to see the finished product. One day I would like to build a jet ranger thinking of stretching my other T-rex 500 to fit in to a .30 size. Keep up the awesome work!!
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Old 11-30-2015, 03:01 AM   #222 (permalink)
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Hi
Fantastic job on your heli

Last edited by KABAL99; 12-13-2015 at 11:59 AM..
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Old 12-06-2015, 03:47 PM   #223 (permalink)
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Hi guys,

sorry but development on my heli is quite slow,.. Today I finally managed to pull out some spare time to make belly lights.


The real thing is looking like this;


And my solution is looking like below I have used glass fiber 0,5mm thick and 0,1mm thick Polystyrol to produce below parts. Lances were bought from Emcotec item OPT4400 "M"(9mm) 3pcs (green, red, white cap)








Enjoy till next time
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SAB GOBLIN 700, Vbar,YGE 120HV,ALIGN MX750, Gryphon BEC
Scale JET RANGER III 700 size with Flasher 600 mechanics under developement,
Futaba Transmitter T14SG !
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Old 12-11-2015, 07:43 AM   #224 (permalink)
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I am loving your attention to detail!

thanks for sharing!
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Old 12-12-2015, 02:10 AM   #225 (permalink)
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Hey Roy, thanks.

I think details are having great impact and are important to the project final look. I have a lot of details to produce further on, so the project is quite alive and kicking

Have fun,

Peter
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SAB GOBLIN 700, Vbar,YGE 120HV,ALIGN MX750, Gryphon BEC
Scale JET RANGER III 700 size with Flasher 600 mechanics under developement,
Futaba Transmitter T14SG !
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Old 12-13-2015, 11:58 AM   #226 (permalink)
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Hi

I am working on Airwolf 700size (you can see it on rc group "another airwolf" thread) with similar mécha.
I am looking for clockwise tail blade like yours
Could you please give me the link because I only see ccw tail blade on Spinblade Web site.

Many thx
David from France
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Old 12-13-2015, 01:15 PM   #227 (permalink)
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David hi,

I am using this item, I bought it here: http://www.fast-lad.co.uk/store/prod...ducts_id=23721

B.R. Peter
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Scale JET RANGER III 700 size with Flasher 600 mechanics under developement,
Futaba Transmitter T14SG !

Last edited by Xsiluro; 12-13-2015 at 02:49 PM..
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Old 12-14-2015, 06:37 AM   #228 (permalink)
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hi

many thx

item description does not tell us if it turn CW or CCW but i will check

thx
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Old 12-14-2015, 10:40 AM   #229 (permalink)
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If I could make a suggestion. In general terms, a two blade head helicopter does not usually overpower the tail rotor. The merits of semi-symmetrical blades have been discussed over the years and the one group of people that tend to set the bar for blade control are the F3C pilots. If you look at their list of needs, good symmetrical blades are at the top of the list. At one time, the accepted thought was that semi's gave better lift characteristics compared to a symmetrical blade. The trouble was that airspeed and wind gusts played havoc with the ability to hold a straight flight line. The blade is what makes or breaks a given setup and after trying many different designs, they all reverted to the symmetrical design and are not looking back.

The exact same thing applies to the tail. You are correct in thinking that at zero pitch, the rotating blade creates lift so to maintain a tail position, little or no pitch angle is needed. However, every blade has a stall point where it no longer creates lift. Semi-symmetrical blades reach this point before symmetrical blades do and, because of their better air flow characteristics, they will produce thrust (lift) at higher angles of attack to the air. A semi-symmetrical tail will not produce thrust as clean as a symmetrical blade when the thrust is needed in the opposite direction to torque.

The best solution is to find a better blade or a slightly larger blade if you are not getting the thrust you need to maintain tail authority. I made numerous changes to a 5 blade head setup to use 95mm blades, which under normal circumstances, have more than enough thrust for a 2 blade head 600 size machine. I had a slight advantage over the current batch of pod and boom chassis in that mine was from Mikado which gave me about a 4.5:1 to 5:1 ratio. In all but the heaviest of winds, the tail held but when you are in competition, a tail that doesn't respond is a sure fire way to low scores. I simply changed to 105mm blades and now I had the tail authority in heavy winds. Naturally, the tail blades are larger but the size of the tail blade is not measured when the static judging is done.

I tried a few different blades and currently have a set of 105mm Revolution's on it. I tried for quite a while to get a set of semi-symmetrical blades but it was going to cost twice what the blades were worth to ship from Europe. I held off and in the long run, I feel I have better performance than I would have ever got from the semi's. Head speed will come into play but if there ever was a good example of the speed that a two blade head on a 600 can be held with 95mm blades, it was my 600EFL Pro. Although not a scale helicopter at the time, I flew it for quite a few flights with a head speed around 1100rpm. When I did a full pitch climb-out, the tail held just fine. My previous 550 size Jet Ranger used head speeds down to 1250rpm and it never had a problem holding the tail, even with full field sideways flight. I hope your build goes well.

Don
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Old 12-14-2015, 01:09 PM   #230 (permalink)
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Hi Don

many thx for all this explanations
anyway i will make my first test with symmetrical blades (main and tail) and later if the symmetrical tail blades hold ok i will keep sym blade on tail and change for semi-sym on main
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Old 04-22-2016, 01:48 PM   #231 (permalink)
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Finally progress with my Jet Ranger Postman delivered new Futaba T14SG with telemetry and my friend Robi cnc machined new swashplate follower even more authentic than last two from Saso..



Swashplate follower looking almost as real one:






,.. to be continued,...
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SAB GOBLIN 700, Vbar,YGE 120HV,ALIGN MX750, Gryphon BEC
Scale JET RANGER III 700 size with Flasher 600 mechanics under developement,
Futaba Transmitter T14SG !
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Old 04-23-2016, 11:58 PM   #232 (permalink)
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Looking at your fuse bottom, looks like you have a recess for the rear and not the front. If you are really wanting to detail it out, I can make the gear, keep it in primer and let you put all the detailing around the joints with filler or what ever, and match the point you are using. Mine are usually smooth with brazing material and not the raised joint covers used to joint the leg and the skid together.

Great build!!!! lots of good detailing techniques for everyone to use!!
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Old 04-24-2016, 12:46 AM   #233 (permalink)
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Hi Mike,

There is recess missing in the back on the belly of the fuse. I wanna make it to be more pristine, this is part I need to cut out of the fuse. It will not be a problem to do it but first I would need new set of skids for dimensions.

Peter
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SAB GOBLIN 700, Vbar,YGE 120HV,ALIGN MX750, Gryphon BEC
Scale JET RANGER III 700 size with Flasher 600 mechanics under developement,
Futaba Transmitter T14SG !
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Old 04-25-2016, 11:13 AM   #234 (permalink)
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Finally being able to fly again, first flight in 2016

Below is the video from above of the spot where I fly:
SAB Goblin 630 panorama filming (7 min 46 sec)


Enjoy,...
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SAB GOBLIN 700, Vbar,YGE 120HV,ALIGN MX750, Gryphon BEC
Scale JET RANGER III 700 size with Flasher 600 mechanics under developement,
Futaba Transmitter T14SG !
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Old 06-20-2016, 01:17 PM   #235 (permalink)
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Here we go back to work, there is so much things still to do

This time the fuel tank cover was a goal. How does things look on the real one:



Making a big hole in the fuselage



Putting this little beauty inside



It is quite near to the real one, I will make a bit of paint effect to look almost identical.



After sanding this is it




To be continued,...
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SAB GOBLIN 700, Vbar,YGE 120HV,ALIGN MX750, Gryphon BEC
Scale JET RANGER III 700 size with Flasher 600 mechanics under developement,
Futaba Transmitter T14SG !

Last edited by Xsiluro; 06-20-2016 at 04:14 PM..
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Old 06-20-2016, 05:56 PM   #236 (permalink)
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Awesome job! Love your handy work And very glad you gave us an update!!! I've been waiting for one lol
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Old 06-20-2016, 11:48 PM   #237 (permalink)
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RCpilot13B I know you guys were waiting for update. Most of the end of last year and first half of this year I just didn't have enough spare time, nevertheless, I will continue my work until this helicopter legend is fully build and there are so many lovely details to be added

Thx for nice words I will keep you guys posted
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SAB GOBLIN 700, Vbar,YGE 120HV,ALIGN MX750, Gryphon BEC
Scale JET RANGER III 700 size with Flasher 600 mechanics under developement,
Futaba Transmitter T14SG !
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Old 06-25-2016, 08:22 PM   #238 (permalink)
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Great stuff there Xsiluro!! Keep it up!
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Old 06-25-2016, 11:43 PM   #239 (permalink)
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Thanks Phil, most certainly I will, keep it up.

These days I am completely into telemetry. I made telemetry transmitter and receiver update.

Transmitter Futaba T14SG Fastest
Receiver Futaba R7008SB Fastest

Sensors:
Unisens-E I will use for most of the electric telemetry info about capacity, current, motor rpm,...GPS2 Multi sensor for Speed, height, distance, GPS
Temp 125C for motor temperature.

Adding chart:




If someone needs a bigger picture it is added below.

To be continued,...
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SAB GOBLIN 700, Vbar,YGE 120HV,ALIGN MX750, Gryphon BEC
Scale JET RANGER III 700 size with Flasher 600 mechanics under developement,
Futaba Transmitter T14SG !
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Old 08-30-2016, 01:52 PM   #240 (permalink)
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Today big smile was present when postman delivered the package mailed by JestRR,...

Do you remember how upset I was looking at fuselage landing gear not being near scale look of the real ones,...



Well as said package was here;


Superior packed, skids were delivered unspoiled and in great shape.



So there they are in all the beauty;



Kudos to JestRR, great scale work man!
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SAB GOBLIN 700, Vbar,YGE 120HV,ALIGN MX750, Gryphon BEC
Scale JET RANGER III 700 size with Flasher 600 mechanics under developement,
Futaba Transmitter T14SG !
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