HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Aug 21, 2010, 01:58 PM
Registered User
drifter_uk's Avatar
england newcastle
Joined Aug 2009
215 Posts
Power supply

Hi sparks and guys been looking for a psu for the hot wire and think ive found something

http://cgi.ebay.co.uk/ws/eBayISAPI.d...tab%3DWatching

just wondering if this would work what do you guys think. Thanks in advance and sorry if posting in the wrong section

LES
drifter_uk is online now Find More Posts by drifter_uk
Reply With Quote
Sign up now
to remove ads between posts
Old Aug 22, 2010, 06:11 PM
Registered User
byrocat's Avatar
Aurora, Ontario, Canada
Joined Mar 2002
1,614 Posts
I use a doorbell transformer and dimmer switch. http://www.radioshack.com/product/in...ductId=2102700

Looks like it's a fair match for cutting wire and the variable voltage will work.

However, be careful using it, especially if the voltage output is AC.
byrocat is offline Find More Posts by byrocat
Reply With Quote
Old Nov 03, 2010, 04:23 PM
Registered User
Joined May 2007
20 Posts
Vacuum SetForming

I am building a B-25 at present from foam and have received a lot of help from your book.


What material and thicknesses do you use for your parts on the B-25 ? Would you give me guidance on best sites to look for help on vauum forming.
leslie_ward is offline Find More Posts by leslie_ward
Reply With Quote
Old Nov 03, 2010, 06:03 PM
Registered User
Highfly!'s Avatar
United States, CA, Cameron Park
Joined May 2007
1,259 Posts
Why would you want to do your own vacuum forming when you can get all the formed plastics directly at www.parkflyerplastics.com?

Forming your own plastic is not that difficult or expensive to setup. It will require some experimenting but if you have a shop vac you can already do a lot. A good book about this subject is vacuum forming by Douglas E. Walsh
Highfly! is offline Find More Posts by Highfly!
Site Sponsor
Reply With Quote
Old Nov 04, 2010, 09:10 AM
Registered User
Joined May 2007
20 Posts
Vacuum Forming

I have already purchased very fine parts from Keith Sparks for his Bronco. I would like to be able to do my own for any model I build. Also postage rates to the UK can be rather excessive.

I have made a canopy but while OK it was quite difficult to form due to the styrene being too thick for my old vac to handle.

Thanks for the suggestion on Walsh.
leslie_ward is offline Find More Posts by leslie_ward
Reply With Quote
Old Sep 22, 2011, 04:06 PM
Registered User
Joined Sep 2011
2 Posts
b25

Hello everyone, at first sorry for my English.I could ask what material is used to build the model? Extruded polystyrene or normal polystyren? What model ultimately weigh? What there are engines and bateri? Thank you
zero_ozero is offline Find More Posts by zero_ozero
Reply With Quote
Old Sep 22, 2011, 04:28 PM
RC 4 Life
sparks's Avatar
Fort Worth, TX USA
Joined Feb 2001
4,547 Posts
Extruded styrene . . .blue or pink foam

Eflight 480 outrunner

all up weight 57 ounces
three cell 2200 batttery
25 amp ESC
sparks is offline Find More Posts by sparks
Reply With Quote
Old Sep 23, 2011, 03:11 AM
Registered User
Joined Sep 2011
2 Posts
b25

wow, its great. I thought it would weigh more. Balsa on it probably is not?
You really helped me I wanted to build from normal polystyrene. This will be better
zero_ozero is offline Find More Posts by zero_ozero
Reply With Quote
Old Sep 23, 2011, 12:44 PM
It's a Great Day to Fly
LenBFP's Avatar
Melbourne Beach, Florida
Joined Jan 2002
3,863 Posts
Online source for applicatiors:

http://www.hobbyking.com/hobbyking/s...Fine_1pc_.html
LenBFP is offline Find More Posts by LenBFP
Reply With Quote
Old Sep 23, 2011, 09:41 PM
RC 4 Life
sparks's Avatar
Fort Worth, TX USA
Joined Feb 2001
4,547 Posts
Dont forget that WOW planes sell a kit of pre cut foam parts and the plastic for this design.
sparks is offline Find More Posts by sparks
Reply With Quote
Old Jun 13, 2013, 06:18 AM
Registered User
Andalucia Spain
Joined Nov 2008
36 Posts
Hi, anyone have an address in the US or Europe from where I could purchase Keith`s book on foam cutting
thanks
bonzo1 is offline Find More Posts by bonzo1
Reply With Quote
Old Jun 13, 2013, 06:37 AM
Now in TN!
J Morgan's Avatar
Chapel Hill, TN USA
Joined Apr 2001
24,309 Posts
Quote:
Originally Posted by bonzo1 View Post
Hi, anyone have an address in the US or Europe from where I could purchase Keith`s book on foam cutting
thanks
http://www.parkflyerplastics.com/cart/

J
J Morgan is online now Find More Posts by J Morgan
RCG Plus Member
Latest blog entry: OV-10A Bronco from Palmer Plans
Reply With Quote
Old Jun 19, 2013, 04:21 PM
Registered User
Andalucia Spain
Joined Nov 2008
36 Posts
Sparks book

Quote:
Originally Posted by J Morgan View Post
Thanks J,
The book is now winging its way to Spain, should be with me this week
50mm foam sheets in workshop awaiting more info on B25
B1
bonzo1 is offline Find More Posts by bonzo1
Reply With Quote
Old Jun 22, 2013, 05:05 PM
RC 4 Life
sparks's Avatar
Fort Worth, TX USA
Joined Feb 2001
4,547 Posts
I'm here for you just ask if you get stuck.
sparks is offline Find More Posts by sparks
Reply With Quote
Old Jul 12, 2013, 11:06 AM
Registered User
Andalucia Spain
Joined Nov 2008
36 Posts
Quote:
Originally Posted by sparks View Post
I'm here for you just ask if you get stuck.
Sparks,
thanks for your offer.
been building with foam for about 5 years now, depron and 50mm extruded, the B25 caught my eye as crossover from built up fuz to foam.
Some 40 years ago I built a UC B25 3 line (motor control) always liked the B25.

Are the canopy's still available, as I am in Spain I checked the German shop but they were not listed.
My plans are to build it as a removable wing, with flaps, (solid core wing), balsa skin (wing) with servo´s in the wing and tail. Fixed U/C. A long term project for me.

B1
bonzo1 is offline Find More Posts by bonzo1
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion 96 inch span House of Balsa plans, build thread, or other help needed. willin Sailplane Talk 33 Jul 20, 2009 08:51 PM
Discussion 48 inch span B-25 free plans sparks Foamies (Scratchbuilt) 1 Oct 17, 2006 02:24 AM
Discussion 48 inch span B-25 free plans. sparks Electric Warbirds 0 Oct 16, 2006 04:51 PM
Get free plans here.... Graham Stabler Parkflyers 5 Jun 29, 2001 05:32 PM
Free plans ? Russell2 Sport Planes 3 May 08, 2001 08:03 AM