By the way, they are £40...

Aerobatic Mini Pipes, wide power band, easy to set-up and tune, ultra light.

CAT.NO. DESCRIPTION PRICE
VPMAP. 1 Aerobatic mini pipe 40 motor 17cm 80g £34.95
VPMAP. 2 Aerobatic mini pipe 60 motor 20cm 100g £39.95
VPMAP. 3 Aerobatic mini pipe 1.08-1.20 size engine £44.95
VPMAP. 4 Aerobatic mini pipe 140+ size engine

Or the throttle pipes.

Give increased power, drmamtic noise reduction, linear throttleability, non-peaky.
Originally designed to complement our high performance funfly planes, now used extensively in may different aero applications.

CAT.NO. DESCRIPTION PRICE
TSC.04C Genesis Cougar 2001 throttle pipe £45.95
TSFF.07 Genesis .32-.53 size throttle pipe £45.95
TSFF.11 Genesis .60-.90 size throttle pipe £57.50

TSFF.13 Genesis .1.20 + size throttle pipe £63.25

Doh!!

Sorry - I guess it helps to read the post properly!! Forget everything I said.


:bananahea

wowbagger

http://www.pspec.com/

It's Performance Specialties. They are the importer for YS engines over here. If you go to the engines, engine rep forum. You can ask Dave Shadel direct about them, or send him an email. There price is in the 50 to 70 dollar range and the performance increase is generally over 1000rpm.
They are what is attached to the exhaust of a Nelson.

Ultrthrust!!!!!!!!
www.pspec.com

Hello
I have an xtreme lite ARF with a saito 72.
Hovers at less than 1/2 throttle with both APC 13x6 (10000) and APC 14x4W (9500)
Unless extreme acceleration is important, I would say the saito 72 has plenty of power.
The plane is slightly less than 5 lbs. (2100g). Had to place the rudder servo in the tail for proper balance.

Jon