It is very interesting coment "but remember this isn't toy". Well, I am not toying here ( in hobby), need to test engines which we are desining and making. Who else here in RC car world design and makes engines and spares for existing brandnamed engines as a hobby on it's own money ( no sponsorship, no investments)? I am real Holyfield myself.
If yu have info where I can at list test one engine for now, please share it.