Haynes Build Your Own Jet Engine Fully Working Model Kit
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- Build your own fully functional model of a two-spool turbo fan engine with jet engine sounds
- Includes detailed step-by-step instructions
- Includes everything you need to build your own engine
- Adult supervision recommended
- Required 3x AA batteries
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This model is a greatly simplified version of a real jet engine. It’s designed to be fun to put together and includes a number of transparent parts that make it a practical aid to understanding how a full-size two-spool turbo fan engine works.The box contains all the parts you need to assemble the working model. It comes complete with its very own Haynes manual, giving you clear step by step assembly instructions, as well as some interesting background information about real engines. All you need to provide is the spare time and three AA batteries. The base includes a sound clip that reproduces the noise of a real jet engine running while the model operates. Ages 10+
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Perhaps I had unrealistic expectations. This model was a gift to my 13 year old grandson. We had previously put together the Haynes V-8 engine model and it is pretty impressive with all of the moving parts: pistons, crank shaft, valves, camshafts and even spark plugs igniting (and a lot more difficult to assemble). You can really see a lot about how an engine works with it, especially the valve train. Unfortunately, there just is not anything interesting to see in the operation of the turbine engine model.
In general, the quality of the model is pretty good. My grandson and I put it together in an hour or so. All of the parts were there and all fit okay with no rework. One caution, be very careful not to bend any of the blades on the turbine wheels. The are fragile and easily bent (same for the compressor blades). If you bend one or more just a little bit they are very obvious when the model is operated and detract from the realism of the visual effect. It is also a real pain to disassemble the model and straighten them. Better to be very careful in the first place. Also make sure you get the wheels mounted squarely on the shaft so they do not wobble when rotated. Any wobble will also distract from the visual effect.
Assembling the model is educational as it does a pretty good job of depicting a two-spool turbine with two independently operating, concentric shafts. Unfortunately, the model has a gear drive between the two spools so they operate at a fixed speed ratio with respect to each other. Presumably this configuration was used so that both spools can be operated from a single drive motor. Unfortunately, the instructions do not explain that this gearing between the spools is not representative of an actual engine. In a real engine, the two spools will turn completely independent of each other. It would be better if each spool was independently driven.
The jet engine sound effect is a bit of a joke as it is almost totally drowned out by the sound of the drive mechanism. Plus, it is the sound of an engine spooling up (increasing speed) which seems silly since the model speed is constant.
While I was disappointed with the end result, I am not unhappy that I bought the model. It was worth the money and my grandson and I had a good time assembling it. He was less disappointed with the end result.
My son was pretty upset after 2 hours of assembly. If you don't want your kid to waste 2 hours and then get nothing to show for it, DO NOT BUY.
I found the part-fit to be really sloppy.
Assembling the stack of blades and vane disks, you have a wobbly, rackety pile of plastic.
After assembly the main fan blades scraped along the inside of the containment shrous with a noise that doesnt really impress a visitor. Also the fans and section rotate excrutiatingly slow.
This was another "coulda=been great" projects... that will not make it to the desk for display.
It would be great if they included either a little booklet about jet engines or even a description of what each part was that is in the model so the builder knows what that part is and what it does.