RE: New 40% Sukhoi SU26 mx on the drawing boards  
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All Forums >> RC Airplanes >> Giant Scale Aircraft - 3D & Aerobatic >> Aerotech R/C Models Support >> RE: New 40% Sukhoi SU26 mx on the drawing boards
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RE: New 40% Sukhoi SU26 mx on the drawing boards - 5/30/2006 3:38:50 PM   
Aerotech


 

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From: St. Ptersburg, FL, USA
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Its stretched 1" for a longer moment. It will be the Sukhoi 26 that will blow some minds.

Later

John

(in reply to DMichael)
       Post #: 26

RE: New 40% Sukhoi SU26 mx on the drawing boards - 5/30/2006 4:39:14 PM   
sukhoi26mx


 

Posts: 114
Joined: 10/10/2004
From: Mead, CO, USA
Status: offline
quote:

ORIGINAL: ben beyer

Nice! It does look a little strange with the wheel pants though.


Hi Ben,

Funny, I think it looks right After many discussions with some Russian pilots, it seems the only reason the Russian aerobatic aircraft never had wheel pants (until the "sorta-pants" of the Su-31) was that the airplanes were operated primarily from gravel, grass, mud and snow - not good conditions for wheel pants. We see about 8 knots increase in the cruise speed...

On the "morphing" of models, very few good flying models are direct copies of the full-scale, and for this I'm greatful! Full-scale airplanes are a lot of compromises that just aren't necessary in the models. For instance, most full-scale airplanes determine wing height not to improve performance, but rather to allow the pilot somewhere to put his legs in reference to the spar (above-below). Here's a "did-you-know", the full scale Extra 300L (low wing) came about because of the desire to have more room for avionics (of all things!!!) behind the panels, so the wing was dropped to put the entire spar assembly below the pilot allowing more room above for extra stuff.

I don't mind the morphing one bit, as long as it still looks like a Sukhoi. The worst morphing I've seen is in one of the most popular airplanes, the Yak 54. Some (like Aerotech's) are pretty close to scale, while others (QQ) don't resemble a Yak at all.

Scott

(in reply to ben beyer)
       Post #: 27

RE: New 40% Sukhoi SU26 mx on the drawing boards - 5/30/2006 5:14:23 PM   
ben beyer



Posts: 2339
Joined: 11/23/2002
From: College Station, TX, USA
Status: offline 		The pants don't look bad. I've just never seen a full scale Sukhoi with wheel pants until now.

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RE: New 40% Sukhoi SU26 mx on the drawing boards - 5/30/2006 6:59:24 PM   
v-snap



Posts: 946
Joined: 10/29/2002
From: brownsburg, IN, USA
Status: offline 		My point exactly on the morphing (QQ Yak, CHP YAK, etc). What I see in the side view though is a mid-wing with a lowered stab. Hence my questioning of the overall appearance. The wing needs to come down too the lower line for scale appearance.

I never heard that the lowered wing on the Extra was for the avionics, I remember something about the lack of visual with the midwing. But the avioncs space sounds more reasonable. I always like hearing the tidbits on design changes, as alot of times it isn't just for flight characteristics.

Keep the wheel pants, spiffs it up a bit. Also makes it your own..



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< Message edited by v-snap -- 5/30/2006 7:04:24 PM >

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RE: New 40% Sukhoi SU26 mx on the drawing boards - 5/30/2006 11:58:12 PM   
aviti


 

Posts: 681
Joined: 12/3/2002
From: Ballwin, MO, USA
Status: offline 		Well years ago there were some scale Sukhois such as the Byron that I believe were rather unstable and had bad snap tendencies. Also, the low wing/high stab combo would likely have some coupling issues. I think the Aerotech SU 26 is designed to fly more neutral like the 260's midwing 300's and Yak 54's. It still looks pretty scale as far as the fuselage outline. I never did understand why the low wing Extra's were so popular through the years when there were midwing versions we could have been flying.

(in reply to v-snap)
       Post #: 30

RE: New 40% Sukhoi SU26 mx on the drawing boards - 5/31/2006 1:11:40 AM   
Aerotech


 

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If we were doing a totally Scale plane of any kind like we used to in the early 90's then I would agree. However if we produce a plane that required alot of mixing in different flight situations then we would get nothing but complaints. So changing things within reason and keeping the performance, nice outlines of the plane were doing then hence we make alot of folks very happy and will enjoy their plane even more. We have spent countless hours making sure our planes fly exceptionally well and will continue to do so.

Thanks

John

< Message edited by Aerotech -- 5/31/2006 2:30:48 AM >

(in reply to aviti)
       Post #: 31

RE: New 40% Sukhoi SU26 mx on the drawing boards - 5/31/2006 2:56:50 AM   
sukhoi26mx


 

Posts: 114
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From: Mead, CO, USA
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quote:

ORIGINAL: Aerotech

So changing things within reason and keeping the performance, nice outlines of the plane were doing then hence we make alot of folks very happy and will enjoy their plane even more. We have spent countless hours making sure our planes fly exceptionally well and will continue to do so.

Thanks

John


Couldn't agree more John.

BTW, the other Sukhoi owner you mentioned... is that Jack Kaiser (sp?) My Dad ran into him at our local contest this last weekend in Sterling Colorado. I was out flying for the airline, but he mentioned that Jack had a Su-26, G202 (which he flew at the contest), and was into RC. Too many coincidences to not be the same guy!

Again, if you need any help at all, throw my name in the hat!

Scott

(in reply to Aerotech)
       Post #: 32

RE: New 40% Sukhoi SU26 mx on the drawing boards - 5/31/2006 3:20:39 AM   
Aerotech


 

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Thats him. He came into the shop today. Real nice guy and has a 26 in mint shape. Were making him a 40% to match his full scale color scheme.

Later

John

(in reply to sukhoi26mx)
       Post #: 33

RE: New 40% Sukhoi SU26 mx on the drawing boards - 5/31/2006 1:57:24 PM   
v-snap



Posts: 946
Joined: 10/29/2002
From: brownsburg, IN, USA
Status: offline 		I agree on the scale part. However a deviation of low to mid wing really does change the aircraft lines. I understand the wants and needs to make improvements in the flight characteristics it has been going on forever. Heck in pattern it was quite normal to cut stabs loose and raise or lower them accordingly during the initial trim stages. I was just dissappointed in seeing a mid-wing location, that is just totally not sukhoi. Yak yes Sukhoi no. The Cap has worked for years with the low wing high stab planform and is still quite competitive could you imagine raising the wing on that to mid-line, I know a few have already dropped the stab some. Alot of tip stalling was eliminated with new airfoils and weight reduction over the planes of the 80's and early 90's.
I know you are just trying to make a quality airplane no problem there, I will just have to wait and see how the finished product looks. Still looking forward to maybe getting one of these in the fall.
How will this effect the 10% rule? Granted QQ's and Cardens Yak sorta make a joke of that.

< Message edited by v-snap -- 5/31/2006 2:03:21 PM >

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RE: New 40% Sukhoi SU26 mx on the drawing boards - 5/31/2006 3:30:58 PM   
Aerotech


 

Posts: 719
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Its within the rules. The other folks I cant comment on.

Thanks

John

(in reply to v-snap)
       Post #: 35

RE: New 40% Sukhoi SU26 mx on the drawing boards - 6/3/2006 12:17:15 PM   
Boatnik


 

Posts: 98
Joined: 7/2/2002
From: Pensacola, FL, USA
Status: offline 		What rule? I have yet to find that one written somewhere. chris

(in reply to Aerotech)
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RE: New 40% Sukhoi SU26 mx on the drawing boards - 6/15/2006 4:30:08 PM   
rcblimppro



Posts: 514
Joined: 2/9/2003
From: San Jose, CA, USA
Status: offline 		I have a couple of local guys who made molds for an exact scale su-31. The wing/stab locations are scale, the aileron hinging even the scale airfoil was used. They look great, have fantastic scale flying qualities, will fly at a snails pace while landing BUUUTTTTTT They also have wicked pitch-yaw coupling and snap like a water balloon with wings. From an IMAC pespective the profile drawing looks right on the money to what needs to be changed to make this a real winner.

As far as Caps are concerned, I haven't seen one compete in IMAC above the sportsman class in 4 years. The last time I saw one win anything was when I was flying mine in sportsman back in '98


Shawn

(in reply to v-snap)
       Post #: 37

RE: New 40% Sukhoi SU26 mx on the drawing boards - 6/15/2006 6:21:18 PM   
Aerotech


 

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Joined: 7/30/2002
From: St. Ptersburg, FL, USA
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Were taking the winning Yak airfoils and using them. The flight performance will be on par with the YAK. Otherwise I wouldnt even do it.

Later

john

(in reply to rcblimppro)
       Post #: 38

RE: New 40% Sukhoi SU26 mx on the drawing boards - 6/16/2006 1:25:02 AM   
v-snap



Posts: 946
Joined: 10/29/2002
From: brownsburg, IN, USA
Status: offline 		I understand why you are doing it, I was just trying to figure out why the change on the Sukhoi. This being the 300L/300s both have a low wing not mid-wing. The Cap is a true low wing design with the raised stab. Some models have lowered stabs to help the pitch coupling.
I will just have to wait and see how it looks. Just my prefrence thats all.

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       Post #: 39