Like other people have posted here, in my side-by-side testing the 3mm TOC-53 is virtually identical in power to a DA-50. All of my testing shows this, and customer reports back this up. It is easier to mount and hook up, and the standard muffler fits more cowls. Weight is 8 oz. more as Bob's table shows clearly.

FYI I have had a couple canister headers made for this engine, as soon as I can test them, assuming they work out OK that will be another option, along with a custom Bisson wraparound that I had made.

I am working hard to increase the engine's versatility.

I tend to agree that Bob's numbers are low, I'll be working with him to find out why.

TF