RE: DLE 35RA on a 35cc Extra 300
The DLE 35 is too light for either one of our 35cc airplanes. These planes were designed around a motor that weighed what most 50cc motors weigh today.
I am sure it would fly the airplane but you would need to add a substantial amount of weight in order to achieve the proper CG.
Please let me know if you have any other questions,
Mark