First bipe    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version

All Forums >> RC Airplanes >> Tips & Techniques >> First bipe
Page: [1] 2   next >   >>  

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
First bipe - 12/1/2012 4:05 PM   
fly20


 

Posts: 45
Score: 100
Joined: 1/20/2007
Last Login: 5/21/2013
From: orient, NY, USA
Status: offline 		I just finished my first biplane build. A BUSA 1/6th pup. The build itself was very enjoyable [aren't they all]. My auw including batteries [it's electric] is just under 6lbs and gives me  just under a 100 watts per pound [more than enough I'm guessing]. Anyway I've flown numerous small electrics and a telemaster 40 and have gotten pretty confident with my 4*40 but have never flown a biplane. Any thing bipe specific that I should set up /watch for? Thanks for the help. Gary

Hide Signatures
       Post #: 1

RE: First bipe - 12/1/2012 4:25 PM   
flyallday


 

Posts: 271
Score: 115
Joined: 11/13/2010
Last Login: 5/22/2013
From: Los Angeles, CA, USA
Status: offline 		I love to fly my bipe but it did take some getting used to.  Best thing would be to fly in very calm conditions until you get the hang of it.  Take off and land into the wind as cross winds are a challange, land with power on and until it stops.  I have found that too much rudder on the ground will get you in trouble and will result in a nose - over or worse.  I fly off pavement so a nose over can bend the motor mount and need to check that consistantly - I found out the hard way a few weeks ago.

Harry 

Hide Signatures

(in reply to fly20)
       Post #: 2

RE: First bipe - 12/2/2012 4:28 PM   
LesUyeda



Posts: 2257
Score: 151
Joined: 10/10/2002
Last Login: 5/21/2013
From: San Diego, CA, USA
Status: online 		"Any thing bipe specific that I should set up /watch for? "

YES. Your bipe is NOT going to float the way you are used to. Bipes are way draggy, and will have a tendency to drop as soon as you cut the power. You would like to FLY them to the ground, then cut the throttle.

Les

Hide Signatures

(in reply to flyallday)
       Post #: 3

RE: First bipe - 12/2/2012 5:26 PM   
acerc



Posts: 3080
Score: 221
Joined: 9/7/2006
Last Login: 5/22/2013
From: lithia, FL, USA
Status: offline 		More of the same here. I have a Waco, Stearman, Ultimate, and all of them do not like to land slow. Generally 4-6 clicks of throttle trim does real well. Once the wheels are on the ground I bring the clicks back down. Of course I don't use that method anymore since getting a feel for it. The only other attribute I have found is useing rudder really helps in turns. For me without rudder the tail seemed like it wanted to loop around. Kinda slide outward away from the turn.
Good luck.


_____________________________

Robert
Cub Brotherhood #3\ Ryan STA Brotherhood #4

Hide Signatures

(in reply to LesUyeda)
       Post #: 4

RE: First bipe - 12/2/2012 6:52 PM   
speedracerntrixie


 

Posts: 2381
Score: 189
Joined: 6/7/2010
Last Login: 5/22/2013
From: San Jose, CA, USA
Status: offline
quote:

ORIGINAL: acerc

More of the same here. I have a Waco, Stearman, Ultimate, and all of them do not like to land slow. Generally 4-6 clicks of throttle trim does real well. Once the wheels are on the ground I bring the clicks back down. Of course I don't use that method anymore since getting a feel for it. The only other attribute I have found is useing rudder really helps in turns. For me without rudder the tail seemed like it wanted to loop around. Kinda slide outward away from the turn.
Good luck.


Most of this sounds like trimming issues. Yes a bipe is draggy and will require some power on final but have more wing area then a mono so should slow down nicely. The rudder in the turns thing is most likely an adverse yaw caused by a lack of aileron differential.



Hide Signatures

(in reply to acerc)
       Post #: 5

RE: First bipe - 12/2/2012 7:19 PM   
flyallday


 

Posts: 271
Score: 115
Joined: 11/13/2010
Last Login: 5/22/2013
From: Los Angeles, CA, USA
Status: offline 		Not so much being able to slow a bipe down, but once on the ground is when you need keep up the power allowing sufficient airflow across the elevator and rudder.  At least that is what I have learned.

Harry 

Hide Signatures

(in reply to speedracerntrixie)
       Post #: 6

RE: First bipe - 12/2/2012 7:35 PM   
speedracerntrixie


 

Posts: 2381
Score: 189
Joined: 6/7/2010
Last Login: 5/22/2013
From: San Jose, CA, USA
Status: offline
quote:

ORIGINAL: flyallday

Not so much being able to slow a bipe down, but once on the ground is when you need keep up the power allowing sufficient airflow across the elevator and rudder.  At least that is what I have learned.

Harry 



I can see where this may be helpful on a WW1 airplane where the gear is narrow and a little bit aft but on what I would call a " normal " bipe it really should not be any different then flying a mono. Landing fast is usually caused by having the CG too far forward.



Hide Signatures

(in reply to flyallday)
       Post #: 7

RE: First bipe - 12/2/2012 7:39 PM   
flyallday


 

Posts: 271
Score: 115
Joined: 11/13/2010
Last Login: 5/22/2013
From: Los Angeles, CA, USA
Status: offline 		Yep, you have a point and I was referring to WWl aircraft.  I have no experience with a "normal" bipe.

Harry 

Hide Signatures

(in reply to speedracerntrixie)
       Post #: 8

RE: First bipe - 12/2/2012 7:51 PM   
jester_s1


 

Posts: 3801
Score: 233
Joined: 12/17/2006
Last Login: 5/22/2013
From: Fort Worth, TX, USA
Status: offline 		Assuming a properly balanced and trimmed plane, the biggest thing is managing your momentum. The plane will slow down in a glide much faster than you are used to, so stalls come on quite suddenly. You have to really have your eyes on the plane and know how to recognize a stall coming on so you can be ready with the throttle. If you want to prepare, take the 4 star and practice doing landings at maybe 1/4 throttle, keeping the plane fast enough that you could just pull it back up if you wanted to.

_____________________________

For me, an ARF is an airplane that someone else just crashed.

Hide Signatures

(in reply to flyallday)
       Post #: 9

RE: First bipe - 12/2/2012 8:29 PM   
acerc



Posts: 3080
Score: 221
Joined: 9/7/2006
Last Login: 5/22/2013
From: lithia, FL, USA
Status: offline 		Speedracer, I was giving advice to a beginner, at least that's how his post reads. If you want to give him lessons on aileron differential, adverse yaw, climb and descent in relation to throttle, adverse torque on power up, etc.etc.etc. be my guest. My post was based on a beginner's perspective. You and I know quite well all those parameter's and what to do with them, he may not yet. I'll be waiting for your book.


_____________________________

Robert
Cub Brotherhood #3\ Ryan STA Brotherhood #4

Hide Signatures

(in reply to jester_s1)
       Post #: 10

RE: First bipe - 12/2/2012 8:36 PM   
speedracerntrixie


 

Posts: 2381
Score: 189
Joined: 6/7/2010
Last Login: 5/22/2013
From: San Jose, CA, USA
Status: offline
quote:

ORIGINAL: acerc

Speedracer, I was giving advice to a beginner, at least that's how his post reads. If you want to give him lessons on aileron differential, adverse yaw, climb and descent in relation to throttle, adverse torque on power up, etc.etc.etc. be my guest. My post was based on a beginner's perspective. You and I know quite well all those parameter's and what to do with them, he may not yet. I'll be waiting for your book.



I was commenting on the characteristics described by you about your airplanes in an effort to assist you. I guess no good deed goes unpunished.



Hide Signatures

(in reply to acerc)
       Post #: 11

RE: First bipe - 12/2/2012 8:45 PM   
acerc



Posts: 3080
Score: 221
Joined: 9/7/2006
Last Login: 5/22/2013
From: lithia, FL, USA
Status: offline

My apoligies speedracer. I misunderstood your meaning. And thank's for the attempted advice. I usually welcome all the advice I can get.
Those were problem's I had years ago and good advice from people like yourself helped me thru it.




_____________________________

Robert
Cub Brotherhood #3\ Ryan STA Brotherhood #4

Hide Signatures

(in reply to speedracerntrixie)
       Post #: 12

RE: First bipe - 12/2/2012 9:28 PM   
fly20


 

Posts: 45
Score: 100
Joined: 1/20/2007
Last Login: 5/21/2013
From: orient, NY, USA
Status: offline 		Thanks for all the advice. 

Hide Signatures

(in reply to acerc)
       Post #: 13

RE: First bipe - 12/2/2012 9:30 PM   
speedracerntrixie


 

Posts: 2381
Score: 189
Joined: 6/7/2010
Last Login: 5/22/2013
From: San Jose, CA, USA
Status: offline 		No worries. I remember when I started flying,  getting trimming information was very difficult. Now with these forums  I like to share what I have learned after 35 years of R/C. I still do learn as well.


Hide Signatures

(in reply to acerc)
       Post #: 14

RE: First bipe - 12/2/2012 9:43 PM   
acerc



Posts: 3080
Score: 221
Joined: 9/7/2006
Last Login: 5/22/2013
From: lithia, FL, USA
Status: offline 		fly20- here is the best advice you will get. Find someone local that is capable and let them teach you the intricacies of set up. A club would be a good place to find such a person.


_____________________________

Robert
Cub Brotherhood #3\ Ryan STA Brotherhood #4

Hide Signatures

(in reply to speedracerntrixie)
       Post #: 15

RE: First bipe - 12/2/2012 10:35 PM   
hairy46


 

Posts: 1736
Score: 183
Joined: 1/8/2007
Last Login: 5/22/2013
From: Sinclair, WY, USA
Status: offline 		Once again person came to right place for advice!

Hide Signatures

(in reply to acerc)
       Post #: 16

RE: First bipe - 12/2/2012 11:07 PM   
OliverJacob


 

Posts: 439
Score: 110
Joined: 7/24/2011
Last Login: 5/22/2013
From: Reedsburg, WI, USA
Status: offline 		I don't want to hijack this thread, but can anybody recommend a nice bipe for a 70 FS ?
It should be small enough to fit in a Trailblazer or should be easy to set up at the field quickly...


Hide Signatures

(in reply to hairy46)
       Post #: 17

RE: First bipe - 12/2/2012 11:26 PM   
acerc



Posts: 3080
Score: 221
Joined: 9/7/2006
Last Login: 5/22/2013
From: lithia, FL, USA
Status: offline

I had one in a Great Planes Super Skybolt. It was sweet.




_____________________________

Robert
Cub Brotherhood #3\ Ryan STA Brotherhood #4

Hide Signatures

(in reply to OliverJacob)
       Post #: 18

RE: First bipe - 12/3/2012 1:13 AM   
eddieC



Posts: 1736
Score: 249
Joined: 11/22/2002
Last Login: 5/21/2013
From: Jackson, MI, USA
Status: offline 		The Sig Hog Bipe is good for a 70 FS, plus you can bash it to look like most anything.

_____________________________

I might not be very good, but I am fun to watch!

Hide Signatures

(in reply to acerc)
       Post #: 19

RE: First bipe - 12/3/2012 2:21 AM   
mickeyrogers


 

Posts: 1
Score: 100
Joined: 4/7/2009
Last Login: 1/26/2013
From: mt.airy, NC, USA
Status: offline 		You can't beat the great planes super skybolt. It flies great,is very stable and lands like a butterfly with sore feet.

Hide Signatures

(in reply to eddieC)
       Post #: 20

RE: First bipe - 12/3/2012 3:42 AM   
JPMacG


 

Posts: 1773
Score: 123
Joined: 1/2/2002
Last Login: 5/16/2013
From: Ivyland, PA, USA
Status: offline 		Great Planes Ultimate Bipe 40 for a 70 four stroke. Mine has a Saito 72. Very nice combination. It fits in the back of my Forester assembled.

Hide Signatures

(in reply to mickeyrogers)
       Post #: 21

RE: First bipe - 12/3/2012 4:21 AM   
flyallday


 

Posts: 271
Score: 115
Joined: 11/13/2010
Last Login: 5/22/2013
From: Los Angeles, CA, USA
Status: offline 		Great info on off topic here.. but how does this help the OP?  Start another thread.

Harry 

Hide Signatures

(in reply to JPMacG)
       Post #: 22

RE: First bipe - 12/3/2012 5:50 AM   
paddcat1


 

Posts: 40
Score: 100
Joined: 2/3/2005
Last Login: 5/19/2013
From: Hot Springs Village, AR, USA
Status: offline 		Probably the most important set up condition you should follow is wing incidence. Check it then check it again. Usually the top wing is set with a slight negative incidence to the lower wing but, whatever the plans say, is what to follow(let's NOT open that can!). Get it wrong and things can really get screwed up. Keep your speed up as everyone suggests on approach. It's also been my experience that MOST bipes like rudder or at least respond more to rudder input. Last, and this could just be my perception, but a bipe seems to have a slightly faster response to control input than a monoplane. Once it's initiated everything seems the same but that initial movement always seems quicker to me. AND alwaysremember, REAL AIRPLANES HAVE ROUND ENGINES AND TWO WINGS!!

Hide Signatures

(in reply to fly20)
       Post #: 23

RE: First bipe - 12/3/2012 11:47 AM   
rgburrill



Posts: 676
Score: 126
Joined: 12/31/2010
Last Login: 5/22/2013
From: Trumbull, CT, USA
Status: online 		I agree with wing incidence - especially the difference between the two wings.  I just finished my second bipe and it has ailerons on both wings where my first one didn't.  I am kind of anxious to see what happens there.

Note that the tail moment on a bipe is very short making the elevator and rudder very quick to respond.  Ground loops are quite common as is takeoff pulling to the left.  I found getting the tail up quickly was very important to get better control.  And that is also a reason to land faster than a monoplane.

Hide Signatures

(in reply to paddcat1)
       Post #: 24

RE: First bipe - 12/3/2012 12:57 PM   
drac1


 

Posts: 139
Score: 100
Joined: 7/23/2008
Last Login: 5/20/2013
From: Romaine, Tasmania, AUSTRALIA
Status: offline 		All good advice in these posts. Even though a bipe has more wing area, they do require more power on the landing approach to keep the airspeed up. You need to fly a bipe in. Hold about a quarter throttle, and when you are over the threshold and a couple of feet off the ground cut the power and it should settle nicely.

_____________________________

There is no such thing as too much power.

Hide Signatures

(in reply to rgburrill)
       Post #: 25

Page:   [1] 2   next >   >>  
All Forums >> RC Airplanes >> Tips & Techniques >> First bipe
Page: [1] 2   next >   >>  




Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


1.438RCU1