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-   -   Bi-plane (https://www.rcuniverse.com/forum/beginners-85/5589334-bi-plane.html)

somegeek 03-21-2007 11:04 PM

RE: Bi-plane
 


ORIGINAL: RCKen

IMHO the best bipe out there for general all around flying, and for being an easy bipe to start out on, is the Sig Hog Bipe. I've had 3 Sig Pigs and I love them. They are a lot more forgiving than most other bipes, but still fly like a bipe.
How do bi-plane flight characteristics differ from single low wing plane? I have a Sig Hog on my wish list for my next build. :D

somegeek

RCKen 03-22-2007 06:37 AM

RE: Bi-plane
 
Somegeek,
First off I just love the way a bipe looks in the air. Something about two wings just looks cool. Also, when you do a shallow dive without any power you can hear the wind whistling through those wings!!!!!!! Way cool.

But flying characteristics.... They vary from bipe to bipe, just like single wing planes do. But a couple of the biggest differences between bipes and single wing planes are landing and slow flying. Most everybody when learning to fly learns to line up on the runway, chop the throttle, and let the plane settle to the runway. If you do that with a bipe you're more than likely going to be picking up a broken pieces of your plane because it's going to stall. With a bipe you need to learn to fly the plane down to the ground. As I just mentioned, stalling. Bipes do not stall gracefully. They don't stall, but rather just quit flying. And they usually quit flying in an ugly way. You have to learn how to recognize when you bipe is going to quit flying, and learn how to recover a stalled bipe.

Ken

ag4ever 03-22-2007 08:38 AM

RE: Bi-plane
 


ORIGINAL: RCKen


Most everybody when learning to fly learns to line up on the runway, chop the throttle, and let the plane settle to the runway.

Ken
This is not how my instructor taught me to land. He had me line up with the runway, then cut throttly and "dive" the plane towards chest level. Once the plane is at chest level right in front of you, you keep going down until your are inces above the runway, and then start to flair a bit. keep adding up elevator until it stalls on the gear. A good landing is one where it stalls at the same time the gear is touching the runway.

He never wanted me to float the plane in for a landing.

His favorite thing to say, "keep the nose down and keep it coming at you."

somegeek 03-22-2007 09:23 AM

RE: Bi-plane
 


ORIGINAL: RCKen

Somegeek,
First off I just love the way a bipe looks in the air. Something about two wings just looks cool. Also, when you do a shallow dive without any power you can hear the wind whistling through those wings!!!!!!! Way cool.

But flying characteristics.... They vary from bipe to bipe, just like single wing planes do. But a couple of the biggest differences between bipes and single wing planes are landing and slow flying. Most everybody when learning to fly learns to line up on the runway, chop the throttle, and let the plane settle to the runway. If you do that with a bipe you're more than likely going to be picking up a broken pieces of your plane because it's going to stall. With a bipe you need to learn to fly the plane down to the ground. As I just mentioned, stalling. Bipes do not stall gracefully. They don't stall, but rather just quit flying. And they usually quit flying in an ugly way. You have to learn how to recognize when you bipe is going to quit flying, and learn how to recover a stalled bipe.

Ken
So comparing to an LT-40, the Hog stalls at a little higher speed and does so quickly. Good to know. Man - I wanna build a Hog, but I still need to maiden my SSE. Hard to get my wife to buy off on my need for a new plane when that's sitting. Flying season ended short for me last year when I messed up my knee. This year I'll definitely get more flying in. K - I'll quit hijacking this thread. :D

Thanks, Ken.

somegeek

RCKen 03-22-2007 10:53 AM

RE: Bi-plane
 
Somegeek,
Tell you need to start on it early because has 2 wings and will take extra time to build!!!!!!

Ken

somegeek 03-22-2007 11:20 AM

RE: Bi-plane
 


ORIGINAL: RCKen

Somegeek,
Tell you need to start on it early because has 2 wings and will take extra time to build!!!!!!

Ken
LOL!

"Baby - it's got two wings. It's like building two planes... I should really get started on this."

somegeek

RCKen 03-22-2007 11:25 AM

RE: Bi-plane
 
That's not too far from the truth. I tell everybody that the good thing about flying a bipe is that it's got two wings. The bad thing about building a bipe is that it's got two wings!!! [X(] [>:] :D:D

Ken

opjose 03-22-2007 12:22 PM

RE: Bi-plane
 
But the good thing about flying a Bipe is that it has two wings... :D

Otherwise it's just not right!

Lawdawg131 03-22-2007 02:02 PM

RE: Bi-plane
 
Anyone have any experince with the Christian Eagle...I have always thought that was a beautiful plane.

RCKen 03-22-2007 02:29 PM

RE: Bi-plane
 


ORIGINAL: Lawdawg131

Anyone have any experince with the Christian Eagle...I have always thought that was a beautiful plane.
It is a beautiful bird, but it's definitely not a first bipe plane. The Christian Eagle is basically a Pitts Special with a fancy paint job. It's a high performance airplane designed for neck breaking aerobatics. I know that Bruce has flown a full scale Pitts so hopefully he'll add his comments here on this. But if you're looking to get into a bipe this isn't the one to start on.

Ken

MikeL 03-22-2007 03:22 PM

RE: Bi-plane
 
It's Christen, not Christian. :)

RCKen 03-22-2007 03:24 PM

RE: Bi-plane
 


ORIGINAL: MikeL

It's Christen, not Christian. :)
Mike,
You are absolutely correct, and my fingers made the same mistake too!!! :eek:

Ken

Lawdawg131 03-22-2007 06:26 PM

RE: Bi-plane
 
WOW I have been calling the wrong thing for years ha ha...it is beautiful.

ChuckW 03-22-2007 10:18 PM

RE: Bi-plane
 
1 Attachment(s)
I just got my first biplane. It's a World Models Ultimate .40 ARF. I usually prefer to build and I really didn't need another plane but I had some discounts I needed to use at the LHS and I came home with it. I've heard mixed opinions of this plane. Some say it is a handful and others say it's easy to fly. I'll find out for myself on Sunday. The .46-AX has a couple tanks of fuel through it and it's ready to go. I figure that if I can fly my Cap-232 and my old Sukhoi, I'll hopefully be OK with this one.

opjose 03-23-2007 11:26 AM

RE: Bi-plane
 
RE: WM 40S

Most of the people who have posted here that it's a "handful" to fly seem to be using the wrong prop.

In other words the plane is brought in and flown too slowly, and tends to stall out on them.

Use an 11x6 on your .46 and you'll have no problems, although it will seem to approach a bit faster than what you may be used to.

That's ok, just keep it under a bit of power on landing.

Keep your throws to the suggested initially until you get used to how it handles.

For an Ultimate of such small size it flies very well and is fairly docile if not flown too slowly....

Stall it out on approach however and ....





skorman 03-23-2007 07:50 PM

RE: Bi-plane
 
If you are looking for a first time bipe, then you can't get an easier flying one than the GP Super Skybolt. Easy to fly and looks great in the air. Mine is powered by an OS 91FS which is all it needs.

brooke 03-23-2007 08:32 PM

RE: Bi-plane
 
Skorman, I am getting the Skybolt first and then I am going to build a Sig Hog Bipe this winter. Do you, or anyone for that matter, have the skybolt with a smoke system in it and if so can I have any heads up on what I may need to change, if anything, so the smoke system will fit.

Mine will be the ARF version, DONT THROW ROCKS AT ME for saying ARF, but I want to start flying this summer and I will build this winter because I have never built a kit yet. I already have the smoke system that MinnFlyer describes in "Got Smoke" and will be using that one so if anyone can give me any advice would be great.

ChuckW 03-23-2007 09:44 PM

RE: Bi-plane
 


ORIGINAL: opjose

RE: WM 40S

Most of the people who have posted here that it's a "handful" to fly seem to be using the wrong prop.

In other words the plane is brought in and flown too slowly, and tends to stall out on them.

Use an 11x6 on your .46 and you'll have no problems, although it will seem to approach a bit faster than what you may be used to.

That's ok, just keep it under a bit of power on landing.

Keep your throws to the suggested initially until you get used to how it handles.

For an Ultimate of such small size it flies very well and is fairly docile if not flown too slowly....

Stall it out on approach however and ....


I'm running an APC 11x5. I got off work a little early today and decide to go out o the field and fly the Ultimate. Landings were no big deal at all. Sure, it doesn't float like a 4* or u-Can-do but so what. I probably landed it 7-8 times. Each time, I just lined up, and eased the throttle back. The nose drops slightly and the plane doesn't slow down much. Feed in a little up elevator but not too much and it touches down smooth every time. Obviously, I'll have to fly it a lot more to get used to everything about the plane but it's not difficult to fly and land at all.


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