Parkflyers :: Forum

Re: EPP SLIPSO 400 [by DUP]

Tue, 09 Mar 2010 23:21:38 -0100

Current Projects:: EPP SLIPSO 400
Another slipso on the building board? Great stuff! It's a super plane.

Re: Jacko's new broken Miniblade [by Jacko]

Tue, 09 Mar 2010 22:52:15 -0100

General banter:: Jacko's new broken Miniblade
The Hippy who designed it didnt leave enough room in the fuselage to fit a battery in

Re: Idea's for hot wire bows [by digimarket]

Tue, 09 Mar 2010 19:50:20 -0100

Current Projects:: Idea's for hot wire bows
This thread already has a number of suggestions for wire alternatives. (See post #2 and my recent posts.)

As far as a different power supply (other than what is already posted here)it would depend on what voltage and amperage you need for the length and resistivity of the wire you end up using. The problem with using a 12 volt battery as you are is that you don't have fine tuning ability to control your wire temperature. You could add a DC to DC converter with a variable resister to the output of the battery and have very fine control. The higher the wattage rating of the convertor, the higher the cost.

This one varies from 12 to 24 volts and up to 24 amps! It's $50 plus tax and shipping. http://www.ecrater.com/product.php?pid=2073610

I think you could also use a converter like these on the output side of a 12 volt switching power supply out of a junk computer. (These are often free.) IF you can find a high wattage ATX powersupply you could get around 10-12 amps (or a little more) out of it. I'm almost certain you can't use these power supplies with either a variac or an SCR type wall dimmer on the input side - don't try it without researching it first! Here are a couple of links to great articles that show how to modify these: http://web2.murraystate.edu/andy.batts/ps/PowerSupply.htm#levels

http://www.wikihow.com/Convert-a-Comp ... ply-to-a-Lab-Power-Supply

Old "dumb" 12 volt battery chargers can be used with variacs and work very well (as long as you don't make the mistake I did). Craigslist is a good source for these, but the variacs are about a $100 on eBay.

Here is a nice looking surplus power supply for about $100 ready to use:
http://asset-liquidators.ecrater.com/product.php?pid=2636586

Re: Wanted: EasyStar [by Willzilla]

Tue, 09 Mar 2010 08:34:20 -0100

Wanted/For Sale or exchange::[unsolved] Wanted: EasyStar
Dont get the brushed version, I did and it sucks! full throttle and it can even climb for quite a while, plus it stalls if you not on full it happened to me and I crash into a tree!

Re: My latest YouTube video [by Speedfreak]

Tue, 09 Mar 2010 08:19:44 -0100

Your Youtube Clips:: My latest YouTube video
Anddddddddddd, another

Re: Slipso400 [by weldingrod]

Tue, 09 Mar 2010 05:53:10 -0100

Speed Freaks:: Slipso400
Yes and i agree about the tree hugging hippies,As far as i know they only grow balsa trees,so they can be cut down and milled.

Re: Dynamic40 smaller tougher faster :-) [by ccc]

Tue, 09 Mar 2010 03:35:35 -0100

General banter:: Dynamic40 smaller tougher faster :-)
had the same thought .... maybe a microdan will fit but the fuse is damned small. fell free to come along to make up your mind about. Or I can bring it to the field next time.

Re: AWESOME! Ground Effect Hovercraft on Tardme [by SargeNZ]

Tue, 09 Mar 2010 02:27:05 -0100

General banter:: AWESOME! Ground Effect Hovercraft on Tardme
If it was truely ground effect I would have thought that those large sweeping turns would not be possible.

3m sailplane F3F Sale..... $1000 NZD [by alpinedsacro]

Tue, 09 Mar 2010 01:36:37 -0100

Wanted/For Sale or exchange:: 3m sailplane F3F Sale..... $1000 NZD
http://vimeo.com/9460072

call 021 024 23504

Re: JR DSX9 NIB mode 1 with 9ch rx and manual all unused. [by alpinedsacro]

Tue, 09 Mar 2010 01:30:26 -0100

Wanted/For Sale or exchange:: JR DSX9 NIB mode 1 with 9ch rx and manual all unused.
Why thankyou !! I have pics and any info you may need. just pm me ? Was bought new from Hobby shop in Australia. It has box/manual/warranty etc. not a hobbyking one. It has C tick