美国
Anytime I have questions or inquiries on new or existing products; Customer service is responsive to my needs. Needed minor parts for an ICE that was purchased 6-months ago and Stirlingkit was able to get them from the manufacturer.
I've purchased 3 different V8 and various 2–6-cylinder gas engines over the last few years. As a retired mechanical engineer, I am constantly impressed with the machining, fit, form and function of the integral components of these engines. Each is a work of art which I intend to display...and run some. My recommendation going forward is to hold off on purchasing new release, pre-production versions. Rather wait till full production kits are available allowing for any redesigns/modifications to be incorporated in the final version. To be fair to the CION, TOYAN etc., DOHC V8-12 engines are intricate machines and manufacturing them this small is a tremendous engineering feat in itself! I would like to see spark plugs and associated electrical components necessary to run the engines included in each kit. Other than that, Stirlingkit's customer service has been responsive to my needs, and I plan on purchasing new engines in the future.