may i ask why 5x5 props are so bad?

There is nothing wrong with 5x5 props,I use one on a small wing I made up,emax 2805 motor,18amp esc and 1300mah 3s,it puts out around 430 grams of thrust,have also used 6x4e apc prop with this set up.

Statically at least the 5x5 APCe prop sucks in terms of Thrust/Watts, its not far off a 4.75x4.75e thrust wise which is far less load (takes less watts to turn). In flight Ive used them a few times and wasnt impressed. Aparently at 190mph+ a 5x5 APCe starts to make sense. Ive never tried one but aparently a 5x5 EMP/TGS prop is much better. Search rcgroups for more info, theres a few threads running around dedicated to the 5x5 APCe sucking

Interesting stuff,hey jacko have you ever tried and of the inrunners that CS have for sale on there site?

No I havent sorry man, Theyre the same as ones HK stock, Ive had a yarn to CK (Mr. Ritewing) about them before, and he mentioned the melt when you look at em sideways, Probably OK up too a point though. ie a good motor can be pressed hard and still remain efficient, whereas a bad one cant and simply makes lotsa heat and melts itself.

hey if i got an emax 2812 and cut down a Gws HD 9x7.5 to like a 7 or 6 inch you think that could work?

Maybe you will have to balance it,
EMAX 2812 motor 20a esc 3s 1300mah battery
Prop gws 6030 x 3 blade =9.5amps 439 grams thrust
Prop apc 6x5.5 2 =13.5amps 440 grams thrust
Prop apc 5.1x4.5e =13 amps 368 grams thrust

On my f22 i used a 8x4 apc e prop cut down to 7 inch dia.

Hey Guys, A little update on the F15, Got on order a MD motor from matt, She is nearly all taped up and ready to be glued when the motor arrives, so far its 320grams, so I'm on course for around 600grams, also I have added an KFm 2 air foil. here's some pictures.

Thanks for everyone's help

Plans are from http://rcfoamfighters.com/blog/ THEY ARE FREE, Videos of all his plane are on youtube.

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Cool man,
Where did you get the tape?

hey, got the the yellow and blue tape from trademe (http://www.trademe.co.nz/Toys-models/ ... her/auction-274244772.htm)

the sliver and black is just plan pvc wide tape you get from mitre 10, warehouse etc