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ThunderTiger Rare Bear

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Old 06-22-2011, 10:20 AM
  #1651
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Default RE: ThunderTiger Rare Bear

Thanks for the advise guys I'd be willing to do a bit of work on it but I would'nt be willing to take of covering where I could'nt replace it and loose those scale looks. That is the main reason I'm interested it looks great. The engine I have is a Laser V twin 1.50 four stroke it really only has the power of an average 1.20 and weighs 1.2KG about 2.64LBS in old money is that the kind of weight you need on the front?
Does anyone still have one of these flying today or are they all decomisioned
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Old 06-22-2011, 01:45 PM
  #1652
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I'm still assembling my plane. I removed all the wing sheeting, put fiberglass in it, and then recovered it. Did the same for the tail surfaces. The fuse is one heavy piece. I don't know how it will fly once I'm done, but I don't think it will float like my P-51 with the same wingspan.
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Old 06-22-2011, 04:30 PM
  #1653
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Default RE: ThunderTiger Rare Bear

Can you make a video also what engine and prop you gona use.
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Old 06-22-2011, 06:43 PM
  #1654
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Default RE: ThunderTiger Rare Bear

If and when I get it done, I'll definitely make a video and take pics. I fly electric and it will fly on 10-12 cells lipo. Haven't decided on the motor yet. I want to make this thing fast. It'll be a while before I get it done because I'm going to paint it to look like this:



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Old 06-22-2011, 07:21 PM
  #1655
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Default RE: ThunderTiger Rare Bear

Hey Guys... Yeah, This thing is Pretty much a piece of **** until you make it into something nice... Ive Been Performing mod after mod after mod... From tail to engine.... Its turning out pretty nice though. My Stabilizer Has Brass Reenforced Carbon fiber 1/8 thick tube running the entire length from tip to tip. Also using 4/40 screws to hold them tight against the fuse while the epoxy dries. For Power I am using a BVM 91 Fan Engine.... Im having to go through everything including tearing the wings apart to reenforce them. Then Glass the wings and Paint them. It will be very nice when finished. Yes, Some will Believe that this is way to much work on a 300 dollar Air plane and Yes Thunder tiger should be ashamed of Selling such a Piece of crap to the public not to mention the safety aspect,With that being said... This is a beautiful Air craft and would be a shame not to put the Extra time in it and then Really Admire the fact that you did make it safe to fly and enjoy the plane with out a shadow of a doubt that there would be some kind of Catastrophic Failure in mid air. This is where it pays off to really take ur time and do it RIGHT! Here is some pictures of my Progress... Hope you enjoy!
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Old 06-22-2011, 08:18 PM
  #1656
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Default RE: ThunderTiger Rare Bear

Some Pictures...
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Old 06-22-2011, 08:22 PM
  #1657
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Default RE: ThunderTiger Rare Bear

More Pictures....
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Old 06-22-2011, 08:25 PM
  #1658
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Default RE: ThunderTiger Rare Bear

looks like that bulckhead is inverted...just sayin. .....
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Old 06-22-2011, 08:28 PM
  #1659
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Default RE: ThunderTiger Rare Bear

And Even More Pictures!...
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Old 06-23-2011, 12:28 AM
  #1660
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Default RE: ThunderTiger Rare Bear

Very nice!clean work....thanks for posting ....
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Old 06-23-2011, 04:19 AM
  #1661
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Default RE: ThunderTiger Rare Bear

Nexus that looks great nice work that engine looks great too like how you have put the exhaust inside that must have took awhile to plan out. You have just made it hard for me now I had dropped te idea of one of these and stated looking at the Kyosho Kelly F1 now I don't know what to do. I was going to use a V twin 4 stroke I've got a 150 and a 200 V twin but I think the 200 would be over the top and would not give me speed anyway and the 150 not enough. What kind of weight does this thing come out at?
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Old 06-23-2011, 06:08 AM
  #1662
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Nexus, I think I'm the one who bought your spare Rare Bear back in December. I thought you would be done with that thing by now.
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Old 06-23-2011, 11:34 AM
  #1663
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Default RE: ThunderTiger Rare Bear

uh nice..... some be loved TT rare bears are still around

hey nexusdc5 very nice build rare bear, i like the bvm set up
let us know how fast it flys

think about the engine loves 10x10 carbon fibre props at 22000+ and the bear has a big bally to hide a small prop ,larger props will heat up the engine a lot.
cooling will be eveything , also for the bvm tuned pipe .
if it gets very hot by an 13x8 you risk a dead stick , be carefull.... safe your nice work and the bear

my bear is waiting for a year now to get maiden with 180 saito with all the modding to fuselarge and wings/stab
and i am still nervous !!!!




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Old 06-23-2011, 09:12 PM
  #1664
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Default RE: ThunderTiger Rare Bear

Hello Easystern, Thanks, Its been a fun build so far... I will be Breaking in the engine on the ground with a 11x11 Apc... Then I will Fly it with a 12x12 and see how it likes it and start from there... I will be glassing the Pipe to keep the heat down in the fuse. Ill get some special Header wrap and nicely wrap the pipe, it will run cool in the fuse.
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Old 06-23-2011, 09:18 PM
  #1665
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Default RE: ThunderTiger Rare Bear

Hey Twin Brother... Hows it going? Have you Finished your Bear yet? Yes Its been a wile but I haven't been spending all my time on the bear, I'm not in a hurry, I have another Project going at the same time. I'm building the Carf Models Gee Bee, Just got it back from the Painter and Starting the build on it... I'm installing the Moki 250... Its going to be awesome! Anyways.... I'm in no hurry with the bear. Just want it safe and Fast.... I'm taking my time with it.
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Old 06-23-2011, 09:45 PM
  #1666
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Hey SpeedLover... Yes It took a little Planning but I knew what I wanted to do and I stuck with it and made it happen. First I mounted a OS 91 Fan engine but wasnt happy with it... So I took it back and thought ... Why not go Balls out with the Best Fan Engine Available! So I did... This isn't just a standard BVM 91, This Is the BVM 91 speed... It is Faster than the Ordinary Stock Version... With that being said, I know I had alot of work to do to the rest of the Air frame To with stand this engine Combo... Also I could have Drilled the Ventury opening all the way through the firewall but Decided to Build a reverse Cone Creating a Forced Air intake... Almost like a super charger. But cheaper and very affective. I chose this combo because I wanted to go fast and still keep the air frame as light as possible. I though about going with a four stroke Engine but was Hell bent on Speed... So this combo while yes... The 91 has a little weight to it, Isnt Close to what some of the larger Four Strokes are weighing in at... If you will notice in the fuse I have been Strategically installing my components in the fuse so that the Air craft will balance out perfectly with out adding nose or tail weight. So Far its working out Perfectly. This Engine is going to be Very thirsty though, If I had stayed with a single 12 oz tank I would be lucky to get 5 Min flight, So I added Two Sister tanks adding another 12 oz making it 24 oz... This will be just long enough to get my knees shaking! Anyways... As soon as I can I will weigh the Craft and let you know what its coming out at right now... The fuse as is still doesn't feel very heavy. We will see soon enough.

Vince...
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Old 06-24-2011, 01:11 AM
  #1667
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Default RE: ThunderTiger Rare Bear

Header Wrap !! thats an good idear !!

i have glassed a tuned pipe tunnel for my sundowner ,just round foam from pipe isolation as a mold, couple of glas and epoxy around
and it was done to keep the heat out of the fuse.

some bears did make 150 + with 180 saitos
you must be faster with the bvm

what is done to the bvm to make it the speed version ? special liner/piston from specialtys ?

the 170 YS supercharged 4 stroke is my favorit for the bear
i the meantime , i fly my robbe little fast foamie rare bear .........
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Old 06-24-2011, 09:28 AM
  #1668
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Default RE: ThunderTiger Rare Bear

Nexus, not done with my Bare yet. I'm in the process of painting the wings. Did all the reinforcing, now just need to do the painting. Will probably be a few months before it's all done. I'm excited to finish it though.
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Old 12-07-2011, 02:14 PM
  #1669
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Default RE: ThunderTiger Rare Bear

Hey guys, any updates ?

I just ordered one of these, and would like to know if anyone that has installed the servos in the stabilizer itself, has had any flutter problems ?

I have used a few hours reading this thread, and serching google for info, and my conclusion for the flutter and exploding stabs are the internal metal wire elevator torque rods are not up to the job.

I will deffinatly install 2 mini servos in the stabilzer, and seal the gap between the stab and elevator hinge.
Will have to live with a little more lead in the nose to compensate for the extra weight in the tail.
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Old 12-07-2011, 06:14 PM
  #1670
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Hey SJN... Yes, Very good Idea installing your servos in the rear wings. That's what I did and they turned out very nice. with that and sealing the hing gap should take care of the Problem. Also don't forget to beef up your rear Wing tubes. I still wouldn't trust the upgraded tubes they provided in these kits. I haven't flown mine yet but still looking forward to the day. Just not finished with it yet.
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Old 12-07-2011, 06:27 PM
  #1671
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Default RE: ThunderTiger Rare Bear

Your setup is extremly nice nexusdc5, and the servo install you did looks great.

I also thought of removing a few mm of material from the trailing edge of the elevator, to get a nice fat squared off trailing edge.
This also delays flutter, and shortening the cord of the elevator will make it a little less sensitive.


I saw on RCG an electric RB which also had the servos in the stab for many flights before he sold the plane.........so at least he did not lose it due to flutter
Here are the pictures I found of his install:
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Old 12-07-2011, 06:37 PM
  #1672
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Default RE: ThunderTiger Rare Bear

hey SJN, Glad to hear he didn't have any problems with his install. That's Encouraging! :-) Ill Post some in depth pictures during my tail section build for you.
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Old 12-07-2011, 06:44 PM
  #1673
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Default RE: ThunderTiger Rare Bear

Looking forward to the pictures........cant wait untill mine arrives

Ive got a ASP 120 4 stroke for mine, so it wont be a screamer like yours


Are the mechanical retracts included in the kit ?
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Old 12-07-2011, 06:46 PM
  #1674
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Yes They Are... Pictures are on their way...
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Old 12-07-2011, 06:57 PM
  #1675
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Default RE: ThunderTiger Rare Bear

Notice in the last set of Pictures how short the Wing joining tubes were before I replaced then with longer and stronger wing tubes.
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