First off let me start by saying I'm new to the idea of indoor flight. This small of stuff I have not seen since a kid with the Guillow's type and such. I have just ordered a 36" ws Bristol Boxkite. Right off the batt I have no idea of what to power it with. I would assume it will have to be micro stuff. It has a total,spec, weight of 8oz. The manufacturer say's it was powered by a 4:1 IPS drive on a two cell, 700 Lipoly. Ok, I know what the battery is but have no clue as to the 4:1 IPS drive. Could someone give me an idea of what that is and if there is a better avenue to take? Also I am familiar with micro servo's but this thing is so small and light I was wondering if there is even smaller stuff?
I will load a pic when RCU will let me.

Seems no one will answer you so will give it a try. The IPS motor is a small gear driven brushed motor power system made by GWS. It draws about 2 Amps max safely or about 12 watts with a 2 cell lipo. Not sure if it still in production or not, but was used in their Lite Stick, Pico Moth, and a bunch of small foam models. My planes that used this power unit were 9 ounces and less. Caliber Hobbies and m-a-e.com are dealers for them in the USA but some local hobby shops may still have them in stock as they were very popular in the day. There are many replacements for this unit out there in the modern brushless world. Small micro servos should work in the 9 to 5 gram weight size. Lots of choices out there with them also. Hope this helps you out a little!!!

Bob M.