All of our 50% models and the Cub-type 60% models were designed specifically for the 3W-275. While other engine combinations may work for these large airplanes, you may not end up with the same high performance airplane as you will with the 3W-275! This engine is the latest design form 3W, incorporating the new split case design and the 6-tranfer port cylinders. This engine design offers the highest power output and torque of any engine in its class. This is the only engine you need and the only one I recommend for the 50% models and our 60% Cub line of ARF’s!
Thank you for trusting me on this one!