martinarcher

My Feedback: (10)

cbk07,

That baby is looking great! I'm finishing up a BME 37% Ultimate and have always loved bipes. I'm glad I looked in on this thread!

Good luck with the maiden. If she flys 1/2 as good as she looks you should be thrilled! Nice job.

Speedy-Gonzales

My Feedback: (202)

I have been looking for a US distributor for the CH Models Pitts S-12 for 50cc engines. Here is a few picture with different color schemes. Can not find anyone that sells in the USA. Would appreciate any/all help or info. A bit small for you 41% guys but my truck needs to be bigger! CH Model does offer this model in either 70" wingspan or for you that like them "HUGE" they offer the same model in a 94.5" model!


http://www.chmodel.com/productsort.a...É»úÄ£��

crhammond

My Feedback: (21)

Does anyone have a contact number for Bigairplanes.com / Bob T? I want one of these kits but the website is not working for me. I tried an old number from another thread but it is not the right one any more.

Did they ever make the canopy for the Python? I know a couple have been built - were those modified by the builder or did they make some instructions/kit changes to doa Python version?

Thanks,
Chris.

Speedy-Gonzales

My Feedback: (202)

Blazingwings is offering this ARF for $564.99 shipped. I am not going to comment on the price but I do know what the profit margin is at this price compared to the manufacturer's price. The fact is that no where is there a written review on this model so you have no idea what will arrive at your door if purchased. Send me a private message and I will divuldge more specific info concerning this model. Blazingwings is importing this model but I will not be buying from them. It is not my intention to hinder anyones business. I am just speaking from my own personal information that I have researched and aquired over the last few months by speaking to present and past distributors worldwide and the manufacturer.

crhammond

My Feedback: (21)

I am not interested in any ARF's - I am interested in the Bigairplanes.com kit from Bob T. Sorry if that is sounds too harsh - I already have a QQ Python 100 and it flies AWESOME. I just want to build the big brother as-it-were. I'll Ping Elle and some other folks and see if I can get a contact number...

Chris.

Speedy-Gonzales

My Feedback: (202)

crhammond, I don't blame you on the ARF's! They should be called ARFU's which is All Ready F'd Up! I think unless some of the ARF manufacturer's get their act together the glue suppliers will be looking at an increase in business. I am sad to see Carl Goldberg Models go down the tube and looks like Lanier is downsizing their line. There are still a few good ones out there but you have to be careful. I'll bet your QQ Python is a real nice model. QQ puts his reputation on the line with each ARF he sells. The new Aeroworks 50cc Python is nice too. Wildhare is another good manufacturer. 90% of all ARF's are coming out of China and as far as I'm concerned many are questionable as to their airworthyness out of the box.

crhammond

My Feedback: (21)

I know I said no ARF's but Bob is not doing these kits any more and the Comp-Arf and 3W options are very, very expensive. So for next year I am putting together one of the new TOC 40% M12's. It is shipping from Chief to me today and I should have it soon. The scheme looks pretty good to me (not scale, but not a bad RC scheme.) I will decide on power plant later once I have a chance to look it over, weigh everything etc. I am thinking either DA170 / 3w170 or if it needs nose weight a 3W 210 (probably overkill.)

Wingspan is 110" top, 107" bottom, 97" fuse (not counting the spinner - whioch will be a 6" and probably 1.5" clear of the cowl - so 104.5" total) Weight is listed as anywhere from 38 - 44 lbs but my guess would be it will be more towards 42-44.

I will use 10 x 9156 servos and a seiko on rudder most likely. Powerbox Royal and LiPo or LiIo packs. Cans and a 3 blade of course.

How big were the Big Airplane 41% in comparison? I know a lot of those flew on a DA150 with pipes... what weight were they coming in at?

ChickenStick Rick

My Feedback: (674)

Hello,
I just received my TOC 40% Pitts on Wed. All I can say is Holy sweet mother of Pearl this is a huge plane. There is alot of hardware included. The bad thing is no manual. Should not really be a problem though. Just may take a little longer to see where everything goes. Rocky is trying to find the CG location for me. Looking to start it in the next week or so. Will let you all know how it goes.

Rick

crhammond

My Feedback: (21)

Well - I figured no manual since no one could really tell me anything about it LOL. It will be great to see what you discover. Mine should arrive on Wednesday. Last contest of the season is that weekend and it will be pretty mugch building time after that.

Worst case we can calculate the CG - but I sure would like to know where the CG was on the protoype and how it flew.

Any plans for engine yet? The dimensions are very close to the BigAirplanes ... so a 210cc might not be out of line. Quique flies both his big bipes on DA100's with 4 pipes.

crhammond

My Feedback: (21)

I found this on-line ... if you want to calculate it. There are a number of on-line calculators that can gett he CG of each wing and then you can use the method mentioned here to figure out the CG for the top-wing having more area. Of course someone has flown this plane and had to figure this out so it would be good to know their experience!

(From Don Stackhouse)
We have a section on our website:

www.djaerotech.com

called "Ask Joe and Don" that deals with all sorts of questions, including this one. Just go to the AJ&D page and type "C/G of a biplane" or something like that into the search engine, and it will come back with a list of links to which of the over 300 articles refers to that phrase. You might want to browse a bit while you're there, you might find other useful articles on other subjects as well.

C/G involves a number of factors, including the tail moment arm and the tail area. The starting point is the Mean Aerodynamic Chord ("MAC") and Aerodynamic Center ("AC", for an individual flying surface it's located on the MAC of that surface, typically at about 25% back from the leading edge) of the combined wings. From there you find the AC of the whole aircraft (including the tail). You may or may not want to include some correction factors for the effects of aspect ratio and airfoils on the diferent flying surfaces, although in my experience these effects tend to cancel each other out for most models.

So how do you find the AC of a pair of wings? First find the AC's of the individual surfaces, then use a weighted average method to find the AC of the combination.

For example, lets assume we have a biplane (a "sesquiplane" in this case, where the upper wing has twice the area of the lower) with an upper wing of 200 sq.in., and a lower wing of 100 sq. inches (total are of the two is therefore 300 sq.in.).

On a side view, draw a line from the AC of the top wing to the AC of the bottom wing. The AC of the combination will lie on that line, closest to the larger of the two surfaces, at a distance proportional to the ratio of their areas. In this case it will lie 1/3 of the way from the top wing to the bottom wing (that's 100 divided by (100 + 200)).

Once you have the combined AC of all 300 square inches of wing together, you can find the AC of the combination of that plus the tail using the same method. This AC for the whole aircraft (assuming the effects of aspect ratios of the different surfaces, plus the effects of their different airfoils, can be ignored) is going to be the approximate location of the "Neutral Point" ("NP"), the C/G location at which the plane's stability is neutral (i.e. it goes where you point it, with no tendency to come back to the original attitude after it's been disturbed).

If you put the C/G ahead of the neutral point, you will have positive stability. The amount that the C/G is ahead of the NP is called "static margin" and is a measure of how much static stability you have. It's typically expressed as a percent of the MAC. If you calculate the static margin in %MAC of an airplane which has an amount of static stability you like, and use the same static margin on your new model, the static stability of the new model should be similar, assuming the two models are similar enough in general type and arrangement that other complicating details don't get in the way.

crhammond

My Feedback: (21)

Some more info here too: http://www.djaerotech.com/dj_askjd/d...picostick.html

And here is a better calculator that takes in to account the tail as well. http://adamone.rchomepage.com/cg_calc.htm

Of course the designer hopfully placed the bottom wing tube so that the CG in somewhere between the middle and front of the tube. Thats where it is on my QQ Python.

flyjay77

been flying my tribute pitts a lot and love it , I have a 3W 140 on it and will do everything at 1/2 power with 3 blade prop . I weighed it at Tulsa Heat Wave this year , 44 lbs ? seems a bit fat ? attatched are some photos , the plane is rock solid and I do everythign with it . our club is having our 2 nd annual Jim LeRoy Memorial fly in on OCT 4 , 2008 check out the event page , your all invited .

Jason

Marcelo Assis

My Feedback: (3)

Hello Jason,
Who is the manufacture of this beatiful plane?
Regards,
Marcelo

flyjay77

This is a 35% trueworthy kit . big ***** cat to fly , with a little power added it doese great wheele landings .

jason

69 roadrunner

Crhammont all; the toc manuls are on line you just down load the correct one for your plane just go to troy built models for manul.

ChickenStick Rick

My Feedback: (674)

There is no manual listed for the Pitts M12. Neither on the Troy Built website or the old sd website. If you know of another source, please post. Thanks

crhammond

My Feedback: (21)

I believe that no manual has been made yet. I think Rocky at Ace is waiting for the next planes to come. He will be building one and making a manual then is my guess.

The plane falls together very easy - no manual is needed IMO. The hardware is all seperately package which actually helps a lot. The main thing I do want is a CG, correct wing and stab incidences and some comments from someone who has flown one. As far as building goes if you have assembled a couple of bigger ARFs you will have no problems on this one.

I started working on mine already. I will be using a 3W 170 CS on 3W canisters. The plane is great quality and I only hope it flies as good as it looks and is built. I don;t know what weight it will work out to - its hard to guess. But I think it may be in the 44lb range. That is not bad given the HUGE size (111" top wing, 108" bottom, 3800+ sq in, 106" rudder to spinner.)

Mine won't fly until next spring given winter is on its way here.

flyjay77

I have been looking for hours for red bull graphics ,,, whare did you get the graphics on your pitts ?

Jason

cadconversions

My Feedback: (21)

I've got a set in AutoCAD that you can scale and send off to a local printer if you want. I based mine on the aerolock small pitts.

niceflattop

Does anyone know where I can see a video of one of these pitts flying?

niceflattop

Does anyone have any flight video of one of the tt toc 40% from chief or one of the blazing wings pitts?

Blazing Wings

Go to our website www.blazingwings.com
Look in the menu for downloads, and click on the sub category videos

You will see 2 videos. First video is our YAK, second video is our Pitts.

If you need any more info, please contact us.

LearnedInUk

My Feedback: (29)

Here is the DH models Pitts, they make the one for blazing wings. It is a sweet airplane. I just started putting mine together this weekend.

[youtube]http://www.youtube.com/watch?v=PLRqxe2tzSk[/youtube]

[youtube]http://www.youtube.com/watch?v=zPVG3fQ796o[/youtube]

niceflattop

How does your pitts fly?

WR450

My Feedback: (66)

Has anyone order from Blazing Wings I oder two of the m12 giant scale pitts it has been almost 2 months and nothing,I e-mail the owner and he just puts me off is this place for real is the service always like this.
wr450