Moki 1.8 may not be enough.
What would be the best engine choice for the DP extra .I am runing a moki 1.8 and I dont think its going to have the power i need at my elevation wich is 4200ft. I am still going to try some differnt props but I dont think it wiil help. what would really give me massave power , MOKI 2.1, or should i go with GAS, 50 cc and how will it fet in the plane. would GAS be to heavy.