I too thought of asking abt the airfoil..so medicineman do u have any guide to build our own hot wire cutter?

xxxkrishxxx,
actually, EEP is good for planes upto 35 in span, basically electric. so if u want to make a elect trainer with 35 in span, high winger, go head. there is no limit in rc world. but still, i would recomment, the best trainer is a .46 size nitro.
Ramesh Tahlan

xxxkrishxxx,
if u want to make wings that have a aerofoil section, then u will need hot wire, and u will also need EEP that is at least 3 or 4 or 5 in thick, for u to be able to cut our the required shape. The 5,9 or 12 mm sheets r for Flatouts. However, u could make some ribs, with upper and lower spar, and a light leading edge, of balse and use a 3mm sheet as covering, and just stick the two sheets like a sandwitch at the trainling edge, and use EEP sheet for ailerons, and use EPP to make the body also.

I've not built one as yet but then in school we used to build simple thermocol cutters for fun using a battery n some wire.. Here is what i'm going to build.. A 12v 4A transformer with a high wattage fan dimmer (connected to mains) across the primary and guitar/nichrome wire across the secondary.. Wire will be mounted on a bow with a simple hinge mechanism and spring to maintain tension.. Will post online once i build it..



I already have a .46 trainer ready  just require fuel n a instructor..   

medicineman,
i am in Delhi, come down, will make u take off and land in 2 days, my last pupil, Shitej, also in Delhi, did solo take off and landing on day 1, in third sortie.
regards
Ramesh Tahlan

thank u ramesh n medicineman..

EPP India pls post the rates a/c to thickness..

Thank you sir, will surely get in touch with you if i'm coming to Delhi.. Right now am stuck with exams 

Ur most welcome xxkrishxx.. Will send you the details of the wire cutter when i build it..


Yes yes.. EPP India can you please post the rates according to the thickness.. Also how much will each sheet weigh so we can calculate shipping..

Any thickness of sheet is available starting from 5mm.

Weight of 9mm thickness of standard size sheet comes to 180gms, so you can calculate the rest.

The standard size is 600mm x 1000mm, thickness 9mm. If you need any customised sizes,pls write to us at EppIndia@gmail.com .

Nichrome wire is available for Rs30/- per metre.

As mentioned by Ramesh, A hobby knife is very good option to cut the sheets as per your required template. But it is better to have a Hot wire foam cutter too in case you need to cut the foam to the required airfoil sizes.

Check the photo below.
Here is how you can make a template and place it on the Epp sheet and cut it with a hobby knife. The Epp sheet is 600mm x 1000mm and for eg.. Super Slo 28 template is placed showing enough foam available to make one more smaller plane.

what is your phn. no.

Sir, i have never see EPP foam.. Is it the type that medical equipment comes packed in? i.e. the packing is shaped of foam which is glued together in layers and is sort of shiny pearly white..

medinicnman,
no, u would not have seen it anywhere, cause it does not some here, i am aware of the packing materal. but seeing the video put up by eepindia.com  they have the correct stuf, and unless u hold it and feel it, it cannot be described. but u will have to put a carbon fibre tube in the wing to give it the required stuffness
Ramesh Tahlan

their starting thickness is 5mm can we use tat instead of 3mm and wat can be used for making the wing ribs instead of balsa?

yes, u can use 5mm for sheeting wings. not a problem, and u could also use it for ribs, but would be better to use 8mm for ribs as there would be fewer and 8mm would be steadier.

Hi,

Iam Raj from EppIndia.
You can reach me on 9740771521 for any information on foam.

The maximum size of epp foam sheet we can deliver is 600mm x 1000mm,

Available foam thickness from 5mm to 60mm

The density of EPP foam is 20 gpl. ( 20kg/m3 ,approx. 1.3lb/ft3 )
gpl = grams per litre

Let me know the different thickness of EPP foam you are looking at.

Hi Raj,
i think the whole rc comunity of India should raise a toat to Raj, he will change the shape of elec flying in India. And thanks for the info on the thickness, from 5 to 50 mm, great, sky is the limit now.
Regards
Ramesh Tahlan

Raj - One question, if you can/wish to answer..  are you importing, or do you have any manufacturing in India itself ?

Hi Anwar / Ramesh,

I too an aeromodeller and for past 10 years Iam into this. Iam importing this material from abroad.The intention of introducing Epp foam is to make this easily available in India at a reasonable price.

As you can see, a 3D RC plane can be built within Rs 500/- ( excluding the cost of electronics ) which is well within the reach of most of us. And moreover this material is suitable for everyone as it is very tough, un-breakable and flexible. Ideal for making electric planes which can be flown in small fields.

It is my dream to introduce aeromodelling at cheaper prices to as many as possible.

Raj,
EppIndia.

That is a noble gesture    I can see that it will have a big positive impact.  Soon this will lead to local pre-cut "kits" with related hardware (pre-bent landing gears, control horns etc).

I thank rcindia.org for giving me a platform to convey my message to the RC community..

Raj,

Hi Raj, Any update on where the foam may be available at Bangalore? Are the purchases going to be available only online or via pick up too? Pls. let know where direct purchase of the foam will be possible. Thanks.

EPP foam will be available both on online as well as you can pick it up from Jayanagar 4th Block. I have provided the address and mobile no. in my previous post.
eMail to eppindia@gmail.com for your requirements.

Your website is still not active ?

I was thinking of adding a banner to RC India once the site is up !

Hi Anwar,

I had some urgent commitments. Iam going to be free from coming Monday and I can concentrate on the website. Epp material is available and all are contacting me by email.
Thank you for the concern and I will update the status of the website as soon as it is up. I wish to build up my own website and that's why it is getting delayed.
I will be happy if you can put up my site banner in RCindia once it is up.

Raj,

EPP foam sheets prices according to thickness. The density of foam is 20gms per litre ( 1.3# lb/Cu-ft )

For   5mm sheet per 600 x 1000mm   Rs  250/-
For   6mm sheet per 600 x 1000mm   Rs  300/-
For   9mm sheet per 600 x 1000mm   Rs  450/-
For 10mm sheet per 600 x 1000mm   Rs  500/-
For 20mm sheet per 600 x 1000mm   Rs 1000/-
For 30mm sheet per 600 x 1000mm   Rs 1250/-
For 60mm sheet per 600 x 1000mm   Rs 2500/-

EppIndia