I found this project most interesting. I suffer from insomnea and often have problems filling my night hours. I found an outlet by building models.
This was an interesting model to build. The parts were very well laid out, the instructions were very complete and very clear. It was easy to build and took the time to keep me occupied.
Some details:
The kit was very well organized, instructions on the top. One of the other engine kits came with instructions on a thumb drive that was unreadable, computer only wanted to format the defective drive. That engine kit sits on a shelf waiting for something I can do, maybe a waste of money.
Instructions walked through the assembly in a very logical process, the steps led to other assembly steps and were very easy to follow.
No glue was required, the design of the kit made it possible to assemble easily with only a few screws in some locations. I thought this was very well engineered and very well thought out.

Unpacking and assembly took about 6 hours.

I understand that this product was intended to be used for teaching. I think that this product has fulfilled this requirement and only the teacher can screw this up!

I take away one star because of the noise this thing makes.

A very good plastic model, with good instructions, take your time and it will build relatively easy, I built it with my 11yrs. old grandson, "I did the fiddly bits"
My issues, 1. with the very small screws, there are 2 packets, the very small screws are different sizes B & C the packets are not marked and it is very difficult to tell them apart unless you measure them with a vernier. 2. the Fan belt is too loose and won,t drive the fan. 3. the Fan has too much end play and wobbles when you rotate it.
Apart from these minor issues a good kit.

Llegó el pedido en perfectas condiciones y en el tiempo estipulado.
Gracias.

Very good

Been looking for an engine DIY for ages. The kids loved it. Now I'm making them rebuild the engine before they move on to real stuff