Sparey Twin - 3D Printer File

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Description

Sparey Twin 2cc

by Ron Chernich

We Motor Boys often got up to some crazy ideas, and in the year 2000
Ron Chernich and myself decided that we would each make an engine
to celebrate what everyone called “the Millennium”. The little engine
known as the Sparey 0.8 [actually 0.64cc] had long been one of my
favourite flying engines, and since I fancied the challenge of a twin, then
a twin based upon two little Spareys, making just 1.28cc, was my choice.
Ron had already built a few little Spareys in 2000 but he had up-sized
his to 1cc. Consequently he fell in line with my plans to build a twin, but
his was to be 2 x 1cc based on his success with the single.

Resources:

Motorboys
Sparey Twin 2cc

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Thank you!

Hardware

⚠️ All of these are OPTIONAL. You can glue everything you need.

8x M3 8mm Socket machine screw (for the Cylinders)
2x M4 10mm Socket machine screw (for the Stand)
1x M4 Grub Screw (for the split bobbin)

Removing Supports

This will require your patience and care, so buckle up and grab some tea!

🚨 Some parts are very fragile. Handle with care. If anything breaks, just print another one. 🚨

Tools I used:
- Needle-nose pliers
- Craft Knife

- Skiving Knife
- Pokey tools

Clean all the tiny bits

Make the surface as smooth as possible

Make sure the threads are as clean as possible

Don't worry if the surface looks rough as look as it smooth to the touch!

Skiving knife is fantastic for this!

Again, it may look rough but its smooth to the touch

Clean the threads as much as possible

2x M3 12mm (Optional, you can just glue it together)

Add the M4 Grub Screw (Optional, you can glue the split bobbin to the crankcase so it doesn't rotate)

Use super glue to glue the cylinder joiner to one of the cylinders

Add the Lock Nut to the cylinder joiner

You can screw in the red venture screw but it is a fragile part. If it breaks you can just glue it in if you wish.

Glue the label to the stand

Congratulations! You did it!

Thank you for taking the time to print and assemble this awesome engine.

Be sure to Like and Boost Me if you want to support me.

One last tip. Add a few drops of Sewing Machine Oil (or any other oil) to make everything lubricated

8x M3 8mm for the cylinders (Optional) and 2x M4 10mm for the Stand (Optional)

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License:

Standard Digital File License