Our design team wants to add 2-3 duct fans or plain propeller engines to our R/C car. Why you ask? Well we are in a pushing contest where size and weight are limited. In order to produce more force horizontally and vertically we want to use airplane engines.

My question for this board is...how much "thrust/force" will a airplane engine produce? Is a ducted fan better than just a propeller? Thoughts or concerns? Thanks for your help!!