RC Groups - The Builders Workshop

Discussion What glue should I use???

eng30 — Sun, 22 Nov 2009 23:38:52 GMT

Hi to all,
This winter I have two kits to build...1) Seamaster II by Ken Willard
2) Lazy Bee by Andy Clancy
My question is which type of glue to use?
Aliphatic Resin OR Cyanoacrylate
The Seamaster will see lake time and the Lazy Bee may see floats also.
Which is the easiest to sand, and what will make the strongest bond without being brittle? Also is either effected by water?
I feel like there is a favorite used with builders, but I don't know what it is.
Any input is welcome,
Eng30

Discussion RCM Trainer 60 airfoil

Zagabond — Sun, 22 Nov 2009 18:12:31 GMT

Im planning on drawing my own plans for a .60+ sized pattern style plane as an electric build. I have a set of RCM Trainer .60 plans. Would this make a good airfoil choice as a starting point for an aerobat of .60-90 size, or should I use something like an airfoil from a Kaos or similar plane?

Im looking to build something around 70" span with 10-12 A123 cells for power.

I have been reading here and elsewhere, it seems that the Kaos has a really good airfoil for speed and aerobatics and I am looking to have the best overall performance that I can get from the model.

I am not into 3D or actual pattern flying, but I want to move up to something that is more advanced. I can handle the plane, no problem, I just want to do this on my own design.

Lastly, can anyone email or post a printable pattern of the Kaos airfoil? I would prefer it to be in .jpeg form so I can work with it in photo shop.

Thanks.

Jess

Discussion RC Electric Model Aircraft

Bless — Sun, 22 Nov 2009 16:06:23 GMT

Hi
I am doing a group project in college to build RC Electric Model Aircraft with wing span of 0.8 max which will be powered by Electric motor with weight of 107kg. could somebody please advice me. Estimate dimensions regarding aircraft centre of gravity and dimensions for this sort of aircraft please

(to calculate center of gravity)

1. Lenght of fuselage,
2. Arm lenght of nose & main gear from the center.
3. Arm lenght of Electric Motor 4. Arm lenght of Battery
5. Amr lenght of reciever

Thank you

Question Best method of making winglets detachable?

justy g — Sun, 22 Nov 2009 13:09:04 GMT

Hi

I am assembling an ASW 28 glider and I am at the winglet attachment stage. I would like to make the winglets detachable so it's easier for transport etc.

Any ideas on what th best method to use?

Thanks in advance

Jus

Discussion Good Starter Airbrush set and Frisk Cutter

MikeBiv — Sun, 22 Nov 2009 09:37:10 GMT

I'm getting into Plan built and would be great full for any recommendations.
Under $100 for the detail and I have a single action with big jar.
What should I look for Depron and what the Best Paint out. Any DVD would be great.
I saw a printer call a RoboCraft that can cut Frisket from a PC desigh, anyone use this there is a $100 version. I love freehand work too.

Thanks!

Question Affordable PC Depron Cutter?

MikeBiv — Sun, 22 Nov 2009 05:17:36 GMT

I'm looking to cut parts from flat plates of foam.

All the Machine I've seen so far have been very expensive.

Is the Phlatprinter the best/only product in this category?

Question Craft Robo For Cuting Depron?

MikeBiv — Sun, 22 Nov 2009 04:50:00 GMT

Can this or any similar machine cut out 3mm Depron?

If so would it cut completly or only DieCut a certain depth?

If this machine won't do it, Is there any in the same price range that can?

Discussion Locktite Epoxy Bad

edragon — Sat, 21 Nov 2009 20:40:18 GMT

LHS ran out of epoxy, so I got bottles of Professional Extra Time Epoxy by Locktite at the local hardware store. The problem is that it doesn't cure properly when it's applied as thin coat. I used it to glue a 1/4" wooden dowel into a piece of CF pushrod, and after one week, the epoxy is still sticky. I was able to pull the dowel out of the CF with my hand. Ironically, the left over epoxy in the mixing cup is fully cured.

Discussion Help designing the vulture

RingburnDave — Sat, 21 Nov 2009 10:58:18 GMT

Hi people, I've been sketching out a retro style 1/2a pylon (australian 1/2a rules) racer design. I need a little help and guidance here and there. So far it's all TLAR based, apart from sticking to AMPRA 1/2a rules as far as fuz size and wing area. Here's a picture of the design as it stands.. Span is 930mm

Wondering what you lot rekon about the size of my horizontal stab? I just made it a lil larger before uploading that image. Think it looks about right now.

What kind of airfoil would people recommend? I've got it mocked up with an MH-46 there .. I'll have to settle on something before I embark on the plug build though I guess it's not entirely important as I'll probably have to build a wing an d shape the plug around that.

This airframe is designed to run with an OS CZ .11 PS engine, though I would like to also create an electric version and also one for slope soaring with a larger wing area etc.

I would appreciate any comments/advice. Cheers! :D

News Vaccum Forming Machine

europack — Sat, 21 Nov 2009 09:44:58 GMT

FOR MORE INFO CONTACT:

0091 93 2324 9260 OR europack1@gmail.com

�Automatic Forming Machine� EP 1420
With forming area 14� X 20� & online individual
Hydraulic Cutting Press.
(with Chilling Plant Ceramic Infrared Heaters,
Output 10 cycles/min, & Power Consumption only 8 kW)

Build Log Wilga, revisited with Sketchup

Karl B� — Sat, 21 Nov 2009 03:40:49 GMT

This is a Sketchup "build" log, at least for now. I'm picking up again on a long running on-again, off-again project, the PZL 104 Wilga 35.

Last using Turbocad, I had started to play around with wing structures: slat/slot construction techniques. Between computer crashes, busy work load, and focus on other non-RC hobbies, progress languished.

I'll post progress updates as I hit major milestones. I'm working off drawings from Bob Banka. Once the model is essentially complete, I'll scale down & start considering actual structure.

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Build Log First Build Thread! Old School Air Flair Diamond Tea

chevypower1930 — Sat, 21 Nov 2009 02:01:10 GMT

Alright. I'm jumping into my first full build!

First, the story behind this build... I am 19 and was diagnosed with Severe Ulcerative Colitis about a year and a half ago and have been in 2 VERY VERY severe flares, hospitalized, and lost about 45 pounds each time.

I am JUST now coming out of this most recent one and I told some guys on here my story and Capt. Crunch Donated to me an Air Flair Diamond Tea fun flyer kit! I couldn't believe how dang generous and thoughtful these guys are that donated all this stuff to me!

Here's a list of guys that have donated stuff to me:
Capt. Crunch
Lbuff1
SteveR
misplacedtexan
Louied
G17staggerwing
Garret H
pmccleave

THANK YOU TO EVERYONE who has donated anything to me for this build and anything else!

These guys are great and I can't wait to start this build!

Alright guys, here's the first pictures! Looks to be in great shape... gonna be a pretty tough build I think for me so I'm gonna be asking for a lot of help!

I already have one question.. there is only 6 wing ribs in the kit??? i this right???

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Discussion First Scratch-Built. Does it look like it could fly someday

Andrew Lumley — Sat, 21 Nov 2009 00:41:58 GMT

Hello,

I few days ago I started working on designing my own plane for the first time as my dad is a woodworker and has a CNC router that I can use to cut out the parts. My basic design parameters are: I would like it to be a sport/aerobatic plane, with a 60-70 inch wingspan, a light wing-loading with a high power-to weight ratio (as it is aerobatic after all) and I have incorporated a symetrical wing design. most of the fuselage will be sheeted apart from the lower half of the empenagge which will be left open.

Any design suggestions would be greatly appreciated,

Thanks,
Andrew

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Help! How to repair planes properly!

mr ray — Sat, 21 Nov 2009 00:32:24 GMT

I posted this question on another thread and it was suggested that I start a new thread, so here goes. Being new to trying to fix or replace parts on woodies I thought there should be a thread where the inexperienced builder could go to and get expert advice on how to make a proper repair. Hoping others could and will you this site to seek advice when they need it. My initial problem is with a sophisticated lady that I had a crash with this past fall. Some of the damage was a straight forward fix but the wing hold down has me wondering just how to go about fixing the damage properly. I have included pictures of the damage. Any advice would be appreciated...Ray

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Question Magnets and assorted items

paulski — Fri, 20 Nov 2009 15:26:29 GMT

Where can I find those tiny neodymium magnets for holding on panels for my airplanes?

Also, where can I find the nice small, roughly 2cm x 4cm aluminum heat sinks that vendors like GWS supply with some of their ESC's?

Discussion Monocote (shrink film) covering for Dummies

cadzilla — Fri, 20 Nov 2009 10:52:35 GMT

I need the book.
My experience is limited to repairing ARFs and I need to cover a balsa sheeted wing and get a smooth finish.

I normally end up with the wood grain showing through.

Thanks
Cadzilla
AKA RichK LowTek

Discussion Protecting/strengthening fuselage bare wood

AWAvistar — Fri, 20 Nov 2009 01:39:21 GMT

My first plane is a used Avistar that was ready to go. My second plane is an all foam Apprentice. I now have a brand new Saratoga 40. I want to go the extra mile when assembling this ARF plane. In particular, I want to protect and or strengthen all exposed bare wood, particularly inside the fuselage. Further, I want to do what I can to protect it from fuel soaking, in particular the firewall. I would be interested in hearing what others have done in this regard... products used such as paints and/ or adhesives and any techniques that you would like to share. Thanks in advance.

Discussion Balsa Suppliers

Mode One — Thu, 19 Nov 2009 22:49:01 GMT

I know many of the younger crowd are going to newer materials and I think that's great. However, I like working with Balsa and other woods when building. I like the traditional approach to building model airplanes. I started a thread a few weeks ago on building a .60 sized Super Kaos. It's time for me to make up a Bill of Materials and place an order for the wood that didn't come in the shoprt kit I bought from Laser Works. I have bought balsa from SIG and Balsa USA> Who do you use?

Mini-HowTo How to make a nose cone?

MinneFlyer — Thu, 19 Nov 2009 21:16:19 GMT

Hi there! I recently had a crash that resulted in the demise of my nose cone on a plane that is no longer in production (buying spare parts is not an option).

I'm looking for ideas on how to go about making a nose cone? I've thought about molding something out of foam, but the thought of a million statically charged pieces of foam getting everywhere in my shop doesn't sound so appealing. I don't have access to a vacuum machine either, so vacuum forming a replacement is not really an option either.

Does anyone have any quick, easy, relatively non-messy ways of making a new nose cone?

Thanks in advance for your ideas!

Discussion Looking for Pattern ship plans

hamza_b — Thu, 19 Nov 2009 19:10:34 GMT

Hi,

Well I am looking for a free or to buy resource from where i can get plans for pattern aircraft...iam looking for 1.20 size and up...

Any info be great.

Cheers!

Question How to Lighten Aileron Stock ?

Chophop — Thu, 19 Nov 2009 17:07:08 GMT

I have two 16 inch x 1.25 inch ailerons that weigh ~13g each. What would be a good pattern to lighten them and retain the stiffness ?
My first and easy idea is to make ovaled cutouts with lands at the hinge locations to absorb the forces and the holes running lengthwise. They start at about 8mm at the thick end and ~4mm 3/4 of the way out.
So, how wide and long can I make the holes and keep the stiffness ? It would be nice to trade the cutout weight for the Econokote covering or even loose some in the process.

Ch

Question What is the best balsa stripper and sanding bars/

eng30 — Thu, 19 Nov 2009 16:11:40 GMT

Hi to all,
What is the best balsa stripper to use and where do you get it ?
What is the best sanding bars out there to sand wings and fus. ?
Thanks, Eng30

Discussion How do you cut tail feathers off , to repair.

eng30 — Wed, 18 Nov 2009 23:46:38 GMT

Hi, what is the best way to remove tail feathers that have been epoxyed on the fus. I have busted the elev. on one plane and need to replace it, but I don't know the best way to do it? Any ideas?

Thanks, Eng30

Question any fuel valves out there?

humanidt — Wed, 18 Nov 2009 23:32:32 GMT

i made a fuel pump from an old air pump, but it pumps air into the fuel can, and the fuel is forced up a tube to the plane, similar to a thermos. The fuel can is metal, so it flexes when the pressure is inside is higher. if i pump air into the tank, the fuel will flow until the pressure equilizes, a few seconds after i shut off the pump. I need to stop the fuel flow before i waste too much fuel.

If there is nothing on the market that does this, i can always gear my motor up to my manual fuel pump.

Question Aileron servos in a foam wing?

timlq — Wed, 18 Nov 2009 16:41:59 GMT

OK, I have zero building experience with foam core wings. Does anyone have a good and strong solution to mounting the servos in the wing? The wing will be sheeted. This is no foamy - the ailerons will be put under quite a bit of load. Thanks!

Help! need suggestions for my first balsa kit

newtohelis — Wed, 18 Nov 2009 04:11:17 GMT

hi all
im sure this has been asked alot before but im looking for an easy to build
small wing span 35-40 inch balsa kit for my first balsa build

does anyone know where i might find something like this online??

i think a three channel plane would be better for my first kit then i can move to a full house plane if i decide i like the building aspect of rc planes
thanks for any info i think this will be a good winter project
newtohelis

Build Log Totally Weird, Wild And Virtual

Harpye — Tue, 17 Nov 2009 19:24:53 GMT

Ok guys ... the situation ... My walls are full - no chance to place another normal sized plane ( more than 40 just in my livingroom) . What means I would have to give up OR go smaller what I actually try to do OR the third solution would be to change to virtual modeling as I try here..

I want to create a plane, a setup and a scene in 3D space no need of Material no space (excluding that MBs on my hdd and the webspace to host the pics).

Just a trial before I go totally desparated due to the longing for the next build.

I'll try to keep this thread a bit more detailed just to give you the posibility to ask or place C&C what would be appreciated at any time!

Idea Trying something new

easilyconfused — Tue, 17 Nov 2009 18:36:25 GMT

This is my first effort at using my CNC for an RC related project.

http://projectcnc.wordpress.com/page-998-fun-with-cnc/

Discussion Anyone use a low cost laser

dmimlitch — Tue, 17 Nov 2009 18:19:47 GMT

I have had the bug for some time to get a laser cutter, but have not found any that are affordable. I have come close several time to purchasing one of the Rabbit laser, but without air assist, I question how much I could really do with it. I got spoiled by my brothers 60 watt tabletop laser with air assists, but I don't have access that any more.

What are people using for low cost lasers. Or is anyone using one.

Also, I am wondering if anyone is using a laser to cut out patterns in covering materials (i.e. monokote).

Thanks in advance.
Dave

Discussion Mosquito Build: Nacelles

Blue Falcon — Tue, 17 Nov 2009 13:04:03 GMT

Guys,

Working on building a DH Mosquito from Gus Morphis plans. Just starting. This is my most ambitious build so far. The rest of my projects have been complete kits or short kits.

Question: I'm presently working on the wings. Is there a typical way to attach nacelles to wings? Also, ideas on access hatch to the inside of nacelle, for throttle servos, landing gear, fuel tank, etc??

Any ideas or pictures of similar projects would be appreciated. I'm sure I'll have additional questions along the way.

Thanks! Paul