ThunderTiger Rare Bear
#376
Uh oh. Upon further searching, it appears that I am missing the hardware pack for the rudder. No Steering arm, screws, bushing, etc.
Will call TT tomorrow, see if they can find one for me.
DT
Will call TT tomorrow, see if they can find one for me.
DT
#377
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From: Nor Cal,
CA
That's a bummer DT... Also ... the links on the torqe rod are little nylon jobs. Seems like alot of people have stuff missing from their kits... (i was missing the instructions)
edit:
Well I just finished the final assembly to balance it (btw mine came out at 12.25-12.5lbs)...and well.... My Bear is a no go for tomorrow.
With no weight added it balance almost 6 3/4" from the leading edge (measured at the fuselage)..... I put on almost 1lb of lead and it moved to about 5 3/8"... Way to heavy for the YS 91 to haul around authoritativly....so it's back to the drawing board.....I've got a 1600mah 5 cell battery al the way against the front of the battery box. The only thing i could move is the Air bottle to up above the fuel tank (but that's pretty minimal weight). So it seems rather than add lead (which I very rarely if ever have had to do), The Bear just needs a bigger engine!. .....I had hopes to at least get a few flights on it with the YS 91, just so I wouldn't have to go out and get a new engine right off the bat (this project put a dent in the RC fund).....but feeling how heavy it is all put together I'm a little nervous (maybe I wouldn't be so worried if i didn't fly at 5000')
So engine changes I'm thinking about are:
-YS 110 (I think it's the same weight as the 91 so that's not going to help the ballance issue...so maybe a bigger battery and less lead with this compo)
-YS120 (maybe find a good deal on a good used one...or maybe one that never ran)
-saito 180 (well it's pretty much the only saito that would be worth while.....the saito 120 overlaps with the YS110 (which may be even better), and why get the 150 when for a few more bucks and only 1 oz weight you get much more engine.
Ohhh well.... patience pays huge dividends!!
edit:
Well I just finished the final assembly to balance it (btw mine came out at 12.25-12.5lbs)...and well.... My Bear is a no go for tomorrow.
With no weight added it balance almost 6 3/4" from the leading edge (measured at the fuselage)..... I put on almost 1lb of lead and it moved to about 5 3/8"... Way to heavy for the YS 91 to haul around authoritativly....so it's back to the drawing board.....I've got a 1600mah 5 cell battery al the way against the front of the battery box. The only thing i could move is the Air bottle to up above the fuel tank (but that's pretty minimal weight). So it seems rather than add lead (which I very rarely if ever have had to do), The Bear just needs a bigger engine!. .....I had hopes to at least get a few flights on it with the YS 91, just so I wouldn't have to go out and get a new engine right off the bat (this project put a dent in the RC fund).....but feeling how heavy it is all put together I'm a little nervous (maybe I wouldn't be so worried if i didn't fly at 5000') So engine changes I'm thinking about are:
-YS 110 (I think it's the same weight as the 91 so that's not going to help the ballance issue...so maybe a bigger battery and less lead with this compo)
-YS120 (maybe find a good deal on a good used one...or maybe one that never ran)
-saito 180 (well it's pretty much the only saito that would be worth while.....the saito 120 overlaps with the YS110 (which may be even better), and why get the 150 when for a few more bucks and only 1 oz weight you get much more engine.
Ohhh well.... patience pays huge dividends!!
#378
Here's a photo of a friends Bear that he test flew yesterday. A little about his set up... he's running Robart pneumatic retracts on the mains with the mechanical retract for the tail wheel. He got rid of the stock Robart tail wheel wire and used the one that came with the kit as it looked better. For power he used a YS 1.40 (just the standard one) running a 16 x 8 (I think that's what it was) Master Airscrew three bladed prop. He did have to add some lead to the nose to balance but I'm not sure how much was needed. The flight was uneventful, he took off retracted the gear, made a few passes, gear down, then greased it in. He said he never got above half throttle through out the flight, even still the Rare Bear was moving along at a pretty good clip. Of the 5 screws holding the cowling on, only 2 were remaining after the first flight, other than that everything was A-OK.
#382
Ran my YS110 in a stand for the first time yesterday - WOW! That has GOT to be enough power.
Just hope I don't need to add any nose weight, but have to wait for the gear to arrive first.
Just hope I don't need to add any nose weight, but have to wait for the gear to arrive first.
#383
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From: Nor Cal,
CA
I'm going for the maiden tomorrow on mine... BIG brick of lead in the front of the battery box (most lead I've ever had to add to a plane), but after running my YS91 for the first time in the plane today, I decided it's got plenty of power (I think I was psyching myslef out earlier) and after the lead payload....it weighs probably 12.25-12.5 lbs which is not too horrible, considering the "payload" and the fact that there's lots of assembly where glue is used (And I'm not conservative with the epoxy like the assembly line arf builders are!). I'm hoping for a nice uneventful flight, and can't wait to fly the Bear!
#385
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<<...brick issue...>>
I need to clue in the scale guys at my field about this model. They firmly believe that you aren't a man unless you fly planes that have wing loadings measured in tons per square inch.
They'll love this one...
I need to clue in the scale guys at my field about this model. They firmly believe that you aren't a man unless you fly planes that have wing loadings measured in tons per square inch.
They'll love this one...
#386
I will be using the standard OS .91 FX that the instructions call for and setting it it up with flaperon mixing. I hope that the 14X7 3 blade prop will have enough blade past the cowl to do the job.
#387

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ORIGINAL: dajensen
I will be using the standard OS .91 FX that the instructions call for and setting it it up with flaperon mixing. I hope that the 14X7 3 blade prop will have enough blade past the cowl to do the job.
I will be using the standard OS .91 FX that the instructions call for and setting it it up with flaperon mixing. I hope that the 14X7 3 blade prop will have enough blade past the cowl to do the job.
Don
#389
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From: north of the basin,
CA
don,
are you one of the gold sponsors?
i just boosted my bronz level to gold.
sharron's fun to talk to about the ace race bear model too and she's hopin' it flies as well as big bear.
from all this lead i hear about people adding, i'm gonna go with the ys140 over the 110 and hppe it balances out better than what's being reported here.
Go Bear!
are you one of the gold sponsors?
i just boosted my bronz level to gold.
sharron's fun to talk to about the ace race bear model too and she's hopin' it flies as well as big bear.
from all this lead i hear about people adding, i'm gonna go with the ys140 over the 110 and hppe it balances out better than what's being reported here.
Go Bear!
#390
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From: Fayetteville, GA
How much do the YS 1.10 and YS 1.40 weigh? I'm thinking about using a Saito 1.80 which comes in at 31 oz. (880g) and 2.8hp
If that would be heavier than the YS options then of course you'd have less lead to add to the front of the plane.
If that would be heavier than the YS options then of course you'd have less lead to add to the front of the plane.
#391
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From: Nor Cal,
CA
Well, My Bear flies!!!! It had a nice, uneventful Maiden flight. No issues what so ever other than needing some more ponies under the cowl (I fly at 5000', so the YS 91 would probably be just fine for sea level flyers. Other than that it took about 2 clicks of right aileron, and about 5 clicks of down elevator to trim it out. A friend has a YS 110 sitting on his bench, so I'm going to see how much better that will do than the YS 91....But I'm pretty much set on the fact that I need the YS 140 or a saito 180 for this bird....I'll probably get which ever ones heavier, as I'm almost certain that it will still need lead up front. But The Bear flew great!!!
here some photos!!
here some photos!!
#393

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Yep,
I'm a Gold and Silver sponsor. I'm going to buy another Gold for my wife next year so we can have matching coats (woohoo)
The Bear is healthy and has some cash to invest in some mods (finally)...She'll be tough to beat next year, let Dago look at the Bear's tail again like it used to be.
Don
I'm a Gold and Silver sponsor. I'm going to buy another Gold for my wife next year so we can have matching coats (woohoo)
The Bear is healthy and has some cash to invest in some mods (finally)...She'll be tough to beat next year, let Dago look at the Bear's tail again like it used to be.
Don
ORIGINAL: rare_bear
don,
are you one of the gold sponsors?
i just boosted my bronz level to gold.
sharron's fun to talk to about the ace race bear model too and she's hopin' it flies as well as big bear.
from all this lead i hear about people adding, i'm gonna go with the ys140 over the 110 and hppe it balances out better than what's being reported here.
Go Bear!
don,
are you one of the gold sponsors?
i just boosted my bronz level to gold.
sharron's fun to talk to about the ace race bear model too and she's hopin' it flies as well as big bear.
from all this lead i hear about people adding, i'm gonna go with the ys140 over the 110 and hppe it balances out better than what's being reported here.
Go Bear!
#394
Well done HighSierra! How did the cowling and spinner line up? Mine looks like it will be off with the inverted YS with the mount pushed all the way up to the battery box.
thanks,
DT
thanks,
DT
#395
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From: Nor Cal,
CA
Thanks!!!
I fly at a little country airport Itsees about 10 planes on a busy week and has no services so "real" airplanes aren't really a problem. Good ole Uncle Sam just spent $250,00 re paving the whole thing so it's really nice (allthouhgh I should probably call Tom Borckaw and NBC news to do a "Fleecing of America" episode on it....)
As for the cowl DT, It wasn't off by much, so I just tried my best to get it centered (It acctually seemed to be a little more off in the vertical axis than the horizontal) I'd at the furthest point where it lines up with the fuselage, maybe an 1/8 gap at most, and that's being liberal..... But in no way does it line up straight if you push the cowl on as far as it will go against the indentation on the fuselage.
I fly at a little country airport Itsees about 10 planes on a busy week and has no services so "real" airplanes aren't really a problem. Good ole Uncle Sam just spent $250,00 re paving the whole thing so it's really nice (allthouhgh I should probably call Tom Borckaw and NBC news to do a "Fleecing of America" episode on it....)
As for the cowl DT, It wasn't off by much, so I just tried my best to get it centered (It acctually seemed to be a little more off in the vertical axis than the horizontal) I'd at the furthest point where it lines up with the fuselage, maybe an 1/8 gap at most, and that's being liberal..... But in no way does it line up straight if you push the cowl on as far as it will go against the indentation on the fuselage.
#396
Hmm, mine looks like the prop shaft is going to be below the center of the cowl by quite a bit. I used the included mount and put it inverted - did you do the same?
#397
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From: Melbourne, AUSTRALIA
Desert Toad, you can take out about half of the downthrust to help line up your cowl, it will fly a little better and you will not need so uch down trim!! I have tested this
#398
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From: Nor Cal,
CA
No stock mount here... I think the one i used was from the Funtana 90 kit (needed a soft mount to reduce the vibes the 180 puts out) ......It has a shorter foot print, but it's a hard mount (I'm more a fan of a soft omunt once you go to 90 or bigger on a 4-stroke). I couldn't get the engine to line up with the trust line with the stock mount as the battery box is in the way for the top two mounting holes (allthouhgh I would have loved to use that mount since it's so damn heavy!).
#399
Okay, my thrust line looks good, and actually everything looks real nice if I tip the top of the cowl out about 1/2 inch. So that makes sense with your previous post. But the lines on the fuse look so much better when it's snug. If the back side of the cowl was cut at a slight angle, things would be perfect, but I'm not up for that. Guess I'll just have to split the difference.
#400

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From: Orange,
TX
hattend
NO NO NO, Rare Bear will still look at Dago Reds tail, but unless we mess up again, RB will win, again.
On a serious note, They truly deserve the winning though, need it to. Glad they took it, despite the way it happend.
NO NO NO, Rare Bear will still look at Dago Reds tail, but unless we mess up again, RB will win, again.
On a serious note, They truly deserve the winning though, need it to. Glad they took it, despite the way it happend.



It doesnt glide.