RE: Balsa USA 1/4 Sopwith Pup build

RE: Balsa USA 1/4 Sopwith Pup build Gallery slideshow

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 >> Kit Building >> RE: Balsa USA 1/4 Sopwith Pup build

Page: << < prev 10 11 12 13 14 [15] 16 17 18 19 next > >>

Message

<< Older Topic Newer Topic >>

RE: Balsa USA 1/4 Sopwith Pup build - 11/6/2012 4:03 PM

senrak

Posts: 144
Score: 105
Joined: 7/12/2006
Last Login: 5/5/2013
From: Rhinelander, WI, USA
Status: offline

My pup is a joy to fly. Don't misunderstand, it does require your complete atention while in the air, and can be a challenge at times. It becomes easy to see why they don't build airplanes like this anymore. Being a bipe gives it a lot of drag and it will slow and stall very quickly if you pull the throtlle back. On the ground, mine would not make a straight take off run until I added a steerable tail wheel. It has never nosed over because the wheels are out in front that inch or so. The DLE 30 will torque it to the left on take off, so you need to limit the power you apply. It will bounce easily on a landing that is not perfect, so I spend a lot of time practicing. I always fly it to the ground being fearfull of the stall thing.
I like your idea of cylindical weights as long as the mount is secure and doesn't overstress the firewall. If a guy could somehow make the cowl heavier, that would, ofcourse be the best place for the weight. Maybe some of the other guys can chime in here with what they have done.
DW

Hide Signatures

(in reply to KDBrown)

Post #: 351

RE: Balsa USA 1/4 Sopwith Pup build - 11/7/2012 3:17 PM

ALO 111

Posts: 284
Score: 100
Joined: 10/4/2007
Last Login: 5/16/2013
From: BLOEMFONTEIN, , SOUTH AFRICA
Status: offline

quote:

ORIGINAL: 3136

That's a very neat install KD, is that a metal clevis I see on your throttle arm?

Have you maidened yours yet ALO111/Barry? Been crap weather here since last chance.

Regards Mark

Nope weather just as crap

Hide Signatures

(in reply to 3136)

Post #: 352

RE: Balsa USA 1/4 Sopwith Pup build - 11/7/2012 5:19 PM

Zor

Posts: 2768
Score: 181
Joined: 2/23/2009
Last Login: 5/21/2013
From: Ontario, ON, CANADA
Status: offline

quote:

ORIGINAL: senrak

My pup is a joy to fly. Don't misunderstand, it does require your complete atention while in the air, and can be a challenge at times. It becomes easy to see why they don't build airplanes like this anymore. Being a bipe gives it a lot of drag and it will slow and stall very quickly if you pull the throtlle back.

Throttle variations and nose attitude goes together. No stalls if controlled.

quote:

On the ground, mine would not make a straight take off run until I added a steerable tail wheel. It has never nosed over because the wheels are out in front that inch or so. The DLE 30 will torque it to the left on take off, so you need to limit the power you apply.

On take off the power should always be applied smoothly. With a tail dragger the tail should be lifted as soon as possibel to make the prop plane of rotation 90 degrees to the trajectory and eliminate the turn tendency.

quote:

It will bounce easily on a landing that is not perfect, so I spend a lot of time practicing. I always fly it to the ground being fearfull of the stall thing.

On appoach there is no risk of stall if you control the speed. Once you flare out you can do either a full stall landing (no bounce) or a wheel landing during which the nose attitude has to be controlled until the tail comes down by itself.

quote:

I like your idea of cylindical weights as long as the mount is secure and doesn't overstress the firewall. If a guy could somehow make the cowl heavier, that would, ofcourse be the best place for the weight. Maybe some of the other guys can chime in here with what they have done.

I have 4 oz of weight installed on the inside of the cowl in one of my planes wihout any problems.
The cowl has been reinforced to allow that.

DW

Have fun and enjoy,

Zor

Hide Signatures

(in reply to senrak)

Post #: 353

RE: Balsa USA 1/4 Sopwith Pup build - 11/7/2012 10:56 PM

senrak

Posts: 144
Score: 105
Joined: 7/12/2006
Last Login: 5/5/2013
From: Rhinelander, WI, USA
Status: offline

Well said, ZOR.

Hide Signatures

(in reply to Zor)

Post #: 354

RE: Balsa USA 1/4 Sopwith Pup build - 11/9/2012 11:02 PM

Zor

Posts: 2768
Score: 181
Joined: 2/23/2009
Last Login: 5/21/2013
From: Ontario, ON, CANADA
Status: offline

quote:

ORIGINAL: senrak

Well said, ZOR.

Thanks "senrak".

Hide Signatures

(in reply to senrak)

Post #: 355

RE: Balsa USA 1/4 Sopwith Pup build - 11/15/2012 4:22 PM

KDBrown

Posts: 86
Score: 100
Joined: 12/27/2010
Last Login: 5/5/2013
From: Castle Rock, CO, USA
Status: offline

Hey Guys, what do you recommend for sealing Solartex once it has been applied. I have seen several comments that a sealer is needed or Solartex will discolor or retain stains. I am using Solartex, not another product. I don't have an airbrush system, so something in a spray can is preferred. Thanks!

Kevin

Hide Signatures

(in reply to Zor)

Post #: 356

RE: Balsa USA 1/4 Sopwith Pup build - 11/15/2012 6:03 PM

senrak

Posts: 144
Score: 105
Joined: 7/12/2006
Last Login: 5/5/2013
From: Rhinelander, WI, USA
Status: offline

I don't yet know what works well. On my pup I used nothing and it does get stained by exhaust gases. It's no big deal on the pup. It kinda adds to the realizm. I did spray rustoleum clear over the solartex on a astrohog with a nitro engine. Not happy. I have never had any colored rustoleum be attacked by methanol before, but the clear turned into a sticky mess. I had to remove it using acetone. So I don't know what to tell you. Maybe thinned clear dope would work. I do think that anything that would truely seal it would take away the wonderful texture that it has, and then you might just as well use monokote or ultracoat. Maybe it is worth a call to BUSA, they are the biggest US distributor.

Hide Signatures

(in reply to KDBrown)

Post #: 357

RE: Balsa USA 1/4 Sopwith Pup build - 11/16/2012 3:08 AM

gervaisd

Posts: 8
Score: 100
Joined: 11/3/2009
Last Login: 5/5/2013
From: Trois-Rivieres, QC, CANADA
Status: offline

Hello,

I was wondering the same thing for Solartex. This is the first time that I will use this product. Does it stick properly or do I need a coat of Balsarite? Here are some pictures of my project.

Thanks!

Daniel

Attachments

Click for fullsize

Hide Signatures

(in reply to senrak)

Post #: 358

RE: Balsa USA 1/4 Sopwith Pup build - 11/16/2012 3:11 AM

gervaisd

Posts: 8
Score: 100
Joined: 11/3/2009
Last Login: 5/5/2013
From: Trois-Rivieres, QC, CANADA
Status: offline

Oups! Sorry, pictures are up side down!

Hide Signatures

(in reply to gervaisd)

Post #: 359

RE: Balsa USA 1/4 Sopwith Pup build - 11/17/2012 3:19 AM

CanDo

Posts: 442
Score: 100
Joined: 2/23/2006
Last Login: 5/21/2013
From: SoCal, CA, USA
Status: offline

Gentlemen, I used Minwax "Clear Satin" Polyurethane in a spray can many years ago, it's still easy to clean. My Pup is gas powered.
Solartex really sticks to wood, you don't need Balsarite or anything else. It also stretches over compound curves.

_____________________________

Wanted: Smarter thumbs...

Hide Signatures

(in reply to KDBrown)

Post #: 360

RE: Balsa USA 1/4 Sopwith Pup build - 11/17/2012 4:56 AM

senrak

Posts: 144
Score: 105
Joined: 7/12/2006
Last Login: 5/5/2013
From: Rhinelander, WI, USA
Status: offline

I'd forgotten about polyurethane. It does make a good fuelproofer / sealer inside and out.
Solartex sticks like grim death.

Hide Signatures

(in reply to CanDo)

Post #: 361

RE: Balsa USA 1/4 Sopwith Pup build - 11/17/2012 11:36 AM

ALO 111

Posts: 284
Score: 100
Joined: 10/4/2007
Last Login: 5/16/2013
From: BLOEMFONTEIN, , SOUTH AFRICA
Status: offline

I used a bush on polyurathane the brush strokes are realistic as the Pups where brush painted.
They where very dirty planes , the motors burned caster oil with the fuel much like a two stroke does . There range was limited by the size of the oil tank not the fuel tank. Lol.
With the motor rotating and basicly no exhaust you can think of the mess.

Attachments

Click for fullsize

Hide Signatures

(in reply to senrak)

Post #: 362

RE: Balsa USA 1/4 Sopwith Pup build - 11/17/2012 3:30 PM

CanDo

Posts: 442
Score: 100
Joined: 2/23/2006
Last Login: 5/21/2013
From: SoCal, CA, USA
Status: offline

Good point, dirt and grime is realistic!

_____________________________

Wanted: Smarter thumbs...

Hide Signatures

(in reply to ALO 111)

Post #: 363

RE: Balsa USA 1/4 Sopwith Pup build - 11/18/2012 5:49 AM

ALO 111

Posts: 284
Score: 100
Joined: 10/4/2007
Last Login: 5/16/2013
From: BLOEMFONTEIN, , SOUTH AFRICA
Status: offline

The oil stains on my pup are simulated, that is not real oil under the wing. I used "sight black" a spray used for gunsights and mixed it with the polyurethane and then brushed it on. Sometimes get a laugh when guys try to wipe it off.

Hide Signatures

(in reply to CanDo)

Post #: 364

RE: Balsa USA 1/4 Sopwith Pup build - 11/18/2012 6:44 AM

senrak

Posts: 144
Score: 105
Joined: 7/12/2006
Last Login: 5/5/2013
From: Rhinelander, WI, USA
Status: offline

Ah, but the stains on my Pup are real.

Hide Signatures

(in reply to ALO 111)

Post #: 365

RE: Balsa USA 1/4 Sopwith Pup build - 11/18/2012 11:25 AM

ALO 111

Posts: 284
Score: 100
Joined: 10/4/2007
Last Login: 5/16/2013
From: BLOEMFONTEIN, , SOUTH AFRICA
Status: offline

Lol maybe mine will to one day if the wind ever gives me a chance to maiden, going to buy a kite.

Hide Signatures

(in reply to senrak)

Post #: 366

RE: Balsa USA 1/4 Sopwith Pup build - 12/27/2012 6:00 PM

sprgfvr02

Posts: 177
Score: 100
Joined: 10/27/2009
Last Login: 5/5/2013
From: simi valley, CA, USA
Status: offline

Guys,

I have just recently found this thread and am not finished reading all the great info in it. Many of the engine sizes posted are in the 30cc range. I have a CRRC 26cc from another plane I'd like to use. Will a 26cc engine be enough? I ordered the plane on Dec 23 and hope to have it delivered sometime next week.

I've read through a lot of build threads in the past and this one is outstanding.

Wes

_____________________________

What''s clear to you, is clear to you.

Hide Signatures

(in reply to ALO 111)

Post #: 367

RE: Balsa USA 1/4 Sopwith Pup build - 12/27/2012 7:53 PM

flyer35

Posts: 105
Score: 100
Joined: 7/26/2005
Last Login: 5/6/2013
From: ILION, NY, USA
Status: offline

I have a Zenoah G26 and it has plenty of power. This isn't an aerobatic plane and the 26 flys it very scale. Good luck with your build

_____________________________

fly it like you stole it!

Hide Signatures

(in reply to sprgfvr02)

Post #: 368

RE: Balsa USA 1/4 Sopwith Pup build - 12/28/2012 4:21 PM

CanDo

Posts: 442
Score: 100
Joined: 2/23/2006
Last Login: 5/21/2013
From: SoCal, CA, USA
Status: offline

Wes, I have an old US 25cc motor in my Pup. It can do big loops, snap rolls, etc with ease. I only use about 1/2 throttle for just cruising around. The one nice thing about older engines is that they tend to be heavier, which means I didn't have to add any nose weight!
-Les-

_____________________________

Wanted: Smarter thumbs...

Hide Signatures

(in reply to sprgfvr02)

Post #: 369

RE: Balsa USA 1/4 Sopwith Pup build - 12/28/2012 4:41 PM

sprgfvr02

Posts: 177
Score: 100
Joined: 10/27/2009
Last Login: 5/5/2013
From: simi valley, CA, USA
Status: offline

Thanks Les. I've seen your plane and it flies great. This should be a fun build.

Wes

_____________________________

What''s clear to you, is clear to you.

Hide Signatures

(in reply to CanDo)

Post #: 370

RE: Balsa USA 1/4 Sopwith Pup build - 12/29/2012 8:08 AM

ALO 111

Posts: 284
Score: 100
Joined: 10/4/2007
Last Login: 5/16/2013
From: BLOEMFONTEIN, , SOUTH AFRICA
Status: offline

quote:

ORIGINAL: sprgfvr02

Thanks Les. I've seen your plane and it flies great. This should be a fun build.

Wes

Enjoy your build and post the pics. My new years resolution : finally maiden my pup ! lol

Hide Signatures

(in reply to sprgfvr02)

Post #: 371

RE: Balsa USA 1/4 Sopwith Pup build - 12/29/2012 2:50 PM

senrak

Posts: 144
Score: 105
Joined: 7/12/2006
Last Login: 5/5/2013
From: Rhinelander, WI, USA
Status: offline

quote:

ORIGINAL: ALO 111

Enjoy your build and post the pics. My new years resolution : finally maiden my pup ! lol

Time to get that plane plane off the ground. Isn't it spring in South Africa?

Hide Signatures

(in reply to ALO 111)

Post #: 372

RE: Balsa USA 1/4 Sopwith Pup build - 12/30/2012 6:18 PM

ALO 111

Posts: 284
Score: 100
Joined: 10/4/2007
Last Login: 5/16/2013
From: BLOEMFONTEIN, , SOUTH AFRICA
Status: offline

Lol better get my butt into gear !!

Hide Signatures

(in reply to senrak)

Post #: 373

RE: Balsa USA 1/4 Sopwith Pup build - 12/30/2012 6:22 PM

ALO 111

Posts: 284
Score: 100
Joined: 10/4/2007
Last Login: 5/16/2013
From: BLOEMFONTEIN, , SOUTH AFRICA
Status: offline

Actually summer , 41 deg cel today !! ouch

Hide Signatures

(in reply to senrak)

Post #: 374

RE: Balsa USA 1/4 Sopwith Pup build - 1/3/2013 11:01 PM

sprgfvr02

Posts: 177
Score: 100
Joined: 10/27/2009
Last Login: 5/5/2013
From: simi valley, CA, USA
Status: offline

Well, Happy New Year. My plane arrived this morning. I've been reading through the manual (no, really) and looking through the plans. One thing comes to mind. Someone mentioned the servo push rods and the issue of the vibrating rods while the engine was running. Has anyone installed a servo just forward of the tail section to eliminate the length of the push rods? I understand the issue of tail weight that would cause. I have a plane with the servos in the tail that works well.

Also, I'd like to use a tail wheel in place of the skid. How would you recommend connecting that to the rudder servo? Or would you add a tail wheel servo in the tail?

I build slow, so don't expect a bunch of photos right away.

Wes

_____________________________

What''s clear to you, is clear to you.

Hide Signatures

(in reply to ALO 111)

Post #: 375

Page: << < prev 10 11 12 13 14 [15] 16 17 18 19 next > >>

All Forums >> RC Airplanes >> Kit Building >> RE: Balsa USA 1/4 Sopwith Pup build
Page: << < prev 10 11 12 13 14 [15] 16 17 18 19 next > >>

Jump to:

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

0.969RCU1