Schipmunk:

A Isolator is a device that separates the servos from the receiver. There are many different kinds and manufactures out there. In the Patty I use the I4C Isolator. In general they allow you to use a bigger & separate battery for the servos and then isolate the servos & their power from the receiver. You then use another battery for the receiver. It 'isolates' the servos from the receiver so you don't get any servo noise or RFI back into the receiver (because they are now separate circuits). Electrodynamics makes one (I think it's called the glitch buster) and instead of being a mechanical isolator (like the I4C) it optically isolates the servos from the receiver (which IMO is better). Optical is always better than mechanical because with mechanical there's still a chance of noise getting to the isolated circuit. With optical it's impossible to get noise to the isolated circuit because light waves can't pass electricity, only 0's & 1's (zero's and ones). It also allows you to use a bigger battery on the servos, say a 6V 5-cell pack at 2400mHa and a regular 4.8v 4-cell 600mHa pack for the receiver. Since there's no power being taken away from the receiver (by the servos) the receiver can run on a smaller pack and last all day long. (Just charge your servo pack when out at the field.) Here's a pix off the I4C site that shows what I mean. (Disclosure-Picture borrowed from the I4C web site.)

Floater:

Yes, it's the same adjustable mount that GP gives you with the Patty ARF. It is strong enough for the BME50cc engine with no problem. Some guys swap them out for a metal motor mount, but it's really not necessary and just another expense. Also, thanks, keep your installations as clean and as simple as possible. Less to go wrong or break.