RE: 1/8 scale TopFlite Corsair Mods

RE: 1/8 scale TopFlite Corsair Mods
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RE: 1/8 scale TopFlite Corsair Mods - 6/18/2007 11:08:30 PM

SMUGator

Posts: 1370
Joined: 10/28/2003
From: Sammamish, WA, USA
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I figure that it won't be too long until someone says, "wow, isn't it heavy to build solid elevators and rudder?" To be honest, I'm kind-of interested to know the exact weight difference too. I was on my way to the post office, so I took the vertical fin/ruddder assembly and the stab elevator assembly and dropped them on the postal scale. Everything is hinged, actuated, shrouded and ready to glass. Weights are:

Fin/Rudder - 1.90 oz
Stab/Elevator - 5.30 oz

If anyone else is at a similar point in the build, I'd be curious to know what those assemblies weigh when built, actuated and hinged "by the book."

Tom

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Currently building a 1/6 Scale F4U-1A Corsair (BuNo 17777) and finishing a TF 1/8 Corsair

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Post #: 851

RE: 1/8 scale TopFlite Corsair Mods - 6/19/2007 12:23:13 AM

NCIS

Posts: 2737
Joined: 5/28/2006
From: Janesville, WI, USA
Status: offline

Tom,

I got you now. I'll do a mock up and check it out. It sounds like it should work fine. When did you get your engineering degree!!!

Thanks for all your help. I'll let you know on the weights soon.

Barry

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Post #: 852

RE: 1/8 scale TopFlite Corsair Mods - 6/19/2007 8:25:51 AM

SMUGator

Posts: 1370
Joined: 10/28/2003
From: Sammamish, WA, USA
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Made a little more progress this evening. Chris finished assembing the scale tailwheel and I made the extra formers needed for the tailwheel assembly and fitted the air tank. As you can see, we still have to modify former 10 some more to get the tailwheel to retract properly. Playing with the retraction mechanism for the first time was pretty cool. Thanks Luke!

Tom

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_____________________________

Currently building a 1/6 Scale F4U-1A Corsair (BuNo 17777) and finishing a TF 1/8 Corsair

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Post #: 853

RE: 1/8 scale TopFlite Corsair Mods - 6/19/2007 1:33:19 PM

ramcfarland

Posts: 3182
Joined: 11/4/2002
From: Waldorf , MD, USA
Status: offline

quote:

ORIGINAL: SMUGator

I figure that it won't be too long until someone says, "wow, isn't it heavy to build solid elevators and rudder?" To be honest, I'm kind-of interested to know the exact weight difference too. I was on my way to the post office, so I took the vertical fin/ruddder assembly and the stab elevator assembly and dropped them on the postal scale. Everything is hinged, actuated, shrouded and ready to glass. Weights are:

Fin/Rudder - 1.90 oz
Stab/Elevator - 5.30 oz

If anyone else is at a similar point in the build, I'd be curious to know what those assemblies weigh when built, actuated and hinged "by the book."

Tom

quote:

Inside every older person is a younger person wondering, "what the heck happened?"

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Fast Richard

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Post #: 854

RE: 1/8 scale TopFlite Corsair Mods - 6/19/2007 11:42:25 PM

samwood2

Posts: 24
Joined: 8/8/2004
From: Ocala, FL, USA
Status: offline

Hi SMUGator,
I have been following this forum since I started my TF Corsair. I find it wonderfull that everone is willing to share their idea's and comments as well.
Since I've started, I believe that I'm a going to want to attempt the rear wheel retract. However, I have seen these retractable assemblies and am wondering if you or anyone has some dimensional drawings that you or someone would be willing to share?
I assume that these will work on a pull- pull system,correct? If so, how do you control the rudder, since the plans have the rudder feed coming off the rear wheel assembly?
Any input would be greatly apperiated.
Samwood2@prodigy.net

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Post #: 855

RE: 1/8 scale TopFlite Corsair Mods - 6/20/2007 1:57:10 AM

SMUGator

Posts: 1370
Joined: 10/28/2003
From: Sammamish, WA, USA
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quote:

ORIGINAL: samwood2

Hi SMUGator,
I have been following this forum since I started my TF Corsair. I find it wonderfull that everone is willing to share their idea's and comments as well.
Since I've started, I believe that I'm a going to want to attempt the rear wheel retract. However, I have seen these retractable assemblies and am wondering if you or anyone has some dimensional drawings that you or someone would be willing to share?
I assume that these will work on a pull- pull system,correct? If so, how do you control the rudder, since the plans have the rudder feed coming off the rear wheel assembly?
Any input would be greatly apperiated.
Samwood2@prodigy.net

I did get drawings from Luke (aka Dionysusbacchus, Bentmetal, and Adonis) last year, but agreed not to repost them. He has been around a bit lately, so perhaps he would be willing to share. The tailwheel is a pull-pull set-up. I'll be adding a separate independent pushrod for the rudder.

Tom

_____________________________

Currently building a 1/6 Scale F4U-1A Corsair (BuNo 17777) and finishing a TF 1/8 Corsair

(in reply to samwood2)

Post #: 856

RE: 1/8 scale TopFlite Corsair Mods - 6/20/2007 9:06:05 AM

SMUGator

Posts: 1370
Joined: 10/28/2003
From: Sammamish, WA, USA
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quote:

ORIGINAL: samwood2

I assume that these will work on a pull- pull system,correct? If so, how do you control the rudder, since the plans have the rudder feed coming off the rear wheel assembly?
Any input would be greatly apperiated.

I had a little bit of time to spend on linkages tonight. The rudder is pure vanilla and much more bulletproof than the TF set-up which is a major PITA to set-up and a nightmare to service. The bit hanging off the torque rod is a guide that will get glued to the back of F-10 to add some lateral stability. The horn is just made from 1/8 brass tubing. All very simple.

Tom

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< Message edited by SMUGator -- 6/20/2007 9:08:45 AM >

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Currently building a 1/6 Scale F4U-1A Corsair (BuNo 17777) and finishing a TF 1/8 Corsair

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Post #: 857

RE: 1/8 scale TopFlite Corsair Mods - 6/20/2007 8:09:04 PM

samwood2

Posts: 24
Joined: 8/8/2004
From: Ocala, FL, USA
Status: offline

Hi Tom,
Thank you so much for the imput, looks easy enough for the rudder control. I assume that the wheel control will be working off a bell crank? Question, would it be possible to control the rudder off the same bell crank assembly, thus elimanting one push rod. Or do you think that this is getting back to TF's configuration?
Thank you for the pictires and info.

Sam

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Post #: 858

RE: 1/8 scale TopFlite Corsair Mods - 6/20/2007 8:20:19 PM

SMUGator

Posts: 1370
Joined: 10/28/2003
From: Sammamish, WA, USA
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quote:

ORIGINAL: samwood2

Hi Tom,
Thank you so much for the imput, looks easy enough for the rudder control. I assume that the wheel control will be working off a bell crank? Question, would it be possible to control the rudder off the same bell crank assembly, thus elimanting one push rod. Or do you think that this is getting back to TF's configuration?
Thank you for the pictires and info.

Sam

Hi Sam,

I do think that a bellcrank on the pull-pull is the way to go. It's interesting that you ask that question as I was just playing with the geometry last night. I think I'm going to mount the bellcrank near the bottom of the fuselage just aft of the wing saddle. The pull-pull lines will be heavy monofilament or spiderwire, so they can just go slack in the belly and stay out of the way when the tailwheel retracts. I think it would be possible to do with a single bellcrank, but my initial feel is to go with two pushrods off the rudder servo to keep the linkages as linear and simple/serviceable as possible.

Tom

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Currently building a 1/6 Scale F4U-1A Corsair (BuNo 17777) and finishing a TF 1/8 Corsair

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Post #: 859

RE: 1/8 scale TopFlite Corsair Mods - 6/21/2007 2:47:19 AM

acesfrenchy

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Joined: 2/1/2006
From: elizabeth city, NC, USA
Status: offline

here is some pic of the ribs and drawing of the wing panels. I tried the "F. Pierce" method, using primer. I still have to clean and sand them, and do a last coat of primer.

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Post #: 860

RE: 1/8 scale TopFlite Corsair Mods - 6/21/2007 2:48:40 AM

acesfrenchy

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From: elizabeth city, NC, USA
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sorry. Cannot upload pics
I'll try later
Pascal

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Post #: 861

RE: 1/8 scale TopFlite Corsair Mods - 6/21/2007 3:43:33 AM

SMUGator

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Joined: 10/28/2003
From: Sammamish, WA, USA
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Please do. I'd really like to see how it turned out.

Tom

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Currently building a 1/6 Scale F4U-1A Corsair (BuNo 17777) and finishing a TF 1/8 Corsair

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Post #: 862

RE: 1/8 scale TopFlite Corsair Mods - 6/21/2007 8:08:18 AM

SMUGator

Posts: 1370
Joined: 10/28/2003
From: Sammamish, WA, USA
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More progress on the scale tailwheel linkages. I get grief from a few of my buddies that I'm always trying to McGyver things together to save $2 or a trip to the hobby store. Well, they're right. I didn't have a stock bellcrank lying around, so I fabbed one up out of a servo arm and a leftover bearing from a set of Robart wheels. That's the first couple of photos. The microservo will retract the tailwheel. If you look carefully, you can see the bellcrank fo