DutcheR

Hi i was searching on the internet for a good tutorial like what do you need to buy for it and how to build it step by step...

geuss what........ could't find( Not a good one) it so can some one make one for me ?(a tutorial)

DutcheR

isnt there anyone ?

blvdbuzzard

This may be more then you wanted but it has a pretty much step by step.

http://www.vicrc.com/cnc/cncfoam.htm

Here is another.

http://gm.cnc.free.fr/index_en.html

Dru.

Steve Lewin

There are lots of tutorial sites out there. Let us know which sites you've found that you didn't like and that will save us posting links to them for you.

Steve

DutcheR

that wasnt what i was looking for i just need such a thing :
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The ---- is the hot wire !! .

C141FlyGuy

My Feedback: (1)

I don't know if you ever found what you were looking for. I am new to the forum and found your thread I figured I would send you some info on my hotwire projects.

C141FlyGuy

My Feedback: (1)

As you can see the fuselage taking shape. I made the battery and radio compartment small to protect the gear and make the plane as strong as possible. I designed this plane to be a park trainer for friends and family.

C141FlyGuy

My Feedback: (1)

A box with wings is not what I am looking for so I try to make my planes with some realistic shape.

C141FlyGuy

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Making the top of the nose.

C141FlyGuy

My Feedback: (1)

Making a rounded windscreen. This makes the plane look more scale and a little more aero dynamic.

C141FlyGuy

My Feedback: (1)

Hotwiring the wing takes a little bit of getting use to. The wing is a Clark Y airfoil from Compufoil (free download) The horizontal and vertical stabs are made from meat tray purchased at my local Grocery store. I just make a patern and trace them/cut them out.

C141FlyGuy

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This plane is designed for a direct drive 370 or 400 motor and a 8.4-9.6 battery pack with a four channel radio and three HiTech HS55 servo's. Total weight is 18-20 oz wing span is 42 inches chord is 7.5 inches. It climbs like a cub (at half throttle and above you must push a little forward on the stick to stop climbing) It lands at a walking speed. Great on floats with a geared 370 motor. Fly for a long time (30 min) and save weight by using Li Poly batteries.

C141FlyGuy

My Feedback: (1)

Here is some pictures of other Hotwire projects I have built. This is my Tuner Classic. This is the first plane out of my jigs, it was test flown with a few small adjustments (slight CG change) it flew awesome.

C141FlyGuy

My Feedback: (1)

This is the second Classic I built, it is powered by an MP Jet brushless. I am more into cheap power plants as they are more affordable for most of us. I also try to keep this as cheap as I can Foam is only $8-$10 a 4x8 sheet for 1.5 inch at Home Depot. I can build three to five planes from one sheet of foam depending on what plane I am building. As you can see my wife loves posing with my creations NOT!

C141FlyGuy

My Feedback: (1)

This is a few pictures of my first Hotwire design. It is n Extra 300. It has a 35 inch span and roughly 245 Sq inches if wing. It is powered by a GWS geared 370 5.33-1 spining a 9/47 prop. I am using a 1200 Mah 3 cell lithiom battery from Radical RC radicalrc.com.The plane weighs in at 13.4 ounces and climbs like a rocket 2100 ft per min. Shut the engine off and it flies like a glider very forgiving.

C141FlyGuy

My Feedback: (1)

This is my current project a small fast flying wing. I am going to use a lexan fuselage and have small jet type intakes on the sides for air cooling the speed control and the motor. I hope I have answered most of the questions you had. I also wanted to show people that hotwiring planes do not have to look like a block with wings. I enjoy building plane in my free time and it is far more cost effective to build and fly my own designs.

C141FlyGuy

My Feedback: (1)

Did my pictures help anyone? I could use some feedback. thanks!

A1RENCH

Those are great looking planes! How long does it take to build the first one? Looks like you
build several at one time, and I could really give you some input if you want to send me one of each to try out!! Did you use the same airfoil on all the models? Looks to me like there is
quite a bit of time in just building the jigs. How does the Home Depot foam compare to GWS
foam as far as toughness? Where do you find plans for these planes?
Best wishes,
Bud

Flying Scotsman 70

do u know where you can get the foam from in the uk and where did u get ur hotwire cutters

C141FlyGuy

My Feedback: (1)

I built my own hotwire and powered with an old model train transformer. But you can find many ways to power the hotwire. As far as the design I do it from scratch and cut the jigs out of wood. If you take the time and design the plane and pay close attention to detail your jigs will be easier to make. I spent a couple of hours designing the plane so it can be made from jigs. Then I cut out the jigs and split them in half so I have two of the exact same shape. It took me about six-eight hours to build the jigs for the Classic. I can hotwire out four to five in an evening. Smooth jigs make a nice plane. Practice makes perfect. You are going to waste some foam but it is cheap. I just go to the hardware store and where they have insulation I sift through the EPS foam and find the more dense stuff as the foam is blown into the mold with more pressure. This makes for a nice smoother surface on the plane. I have to go to work I will be back in ten days. I figured I would throw in a picture of my work.

Flying Scotsman 70

Thanks for the help

zagibond

Will your cutter cut EPP?

PaulVi

If CNC is more than you were looking for here are a few sites that just use a bow. Lots of info but the bow is really simple.

you have a cross bar and to legs one leg is fixed at about 90 deg. to the cross bar and the other is atached so it can pivot. make it like an H the top of the H will act as a way to tension the cutting wire on the bottom of the H select a wire and a PS that will give you the temp you need for the foam you are cuting I use a dimmer switch and a 25 amp salvaged xformer. the dimmer limmits the poer going into the xformer hence limiting the power going to the cutting wire. I can go from cold to red hot with this setup.

Hope it helps



http://www.vatsaas.org/rtv/construct...irecutter.aspx
http://www.info-central.org/construction_hotwire.shtml
http://webpages.charter.net/rcfu/Con.../FoamWing.html
http://www.geocities.com/CapeCanaver...ng/coring.html
http://www.rcuniverse.com/forum/Hot_...1178270/tm.htm

zagibond

thx for the help

C141FlyGuy

My Feedback: (1)

Yes my hot-wire will cut EPP. As far as CNC I am just using wood jigs and a homemade bow with nichrome wire and an old model train transformer. As far as where to get the foam in the UK I have no idea it is standard 1.5 inch insulation foam. Next time I am in the UK I will try and look around and talk to some of the local RC guys and find out. How long does it take me to build a plane? I find it is easier to hot-wire several of the same part out in a row. I can cut out five of my classic planes in about six to seven hours. This includes me cutting the foam down from a four foot by eight foot sheet to more usable size. With some five minute epoxy you can glue up a kit or two in an evening after work. I take the time to make good wood jigs so my planes need very little to no sanding.