RE: CMP/GSP Spitfire
Hi,
I have had the CMP Spit for just over a year and it's a great flier. I used an ASP 1.20 4-st with a 15 x 8 MAS and it has plenty of grunt. This engine starts much easier than my mates OS 1.20 pumper and is easily as quick in the air. I used Robart 609HD mechanical retracts. Because they are 85 deg, they give a slightly wider track than 90 degree ones would and it's therefore a bit more stable on the ground.
I set all the surface deflections to the instructions and have them on 30% rates and 60% expo. This is plenty for scale like flying.
The stock wheels were a bit small I felt, so upped them to 3.75" dia, removed the moulded wheel wells and sheeted them in instead.
I'm also using Unitracts 13mm oleos which help a bit with my bumpy landings.............
Pete