Model Diesel Engine Fuel

I’m used to the old diesel engines of years ago and I can still smell the fuel.

Go me wondering what the model diesel fuel consists of, so thought I would do some searching:

  • Enya suggested fuel for their diesel 4-stroke: 36% paraffin and 36% ether and 25% castor oil and with a 2 to 3 % splash of Amyl Nitrate
  • Model Technics:
    • 35% Ether, 35% Kerosene, 28% Castor oil, 2% Isopropyl Nitrate – this is a general purpose fuel
    • 30% Ether, 47.5% Kerosene, 20% Castor oil, 2.5% Isopropyl Nitrate – this is a high performance fuel

What you see from this brief list of fuels are four main components:

  1. Kerosene – the base fuel component of the mix
  2. Ether – low auto-ignition temperature of around 160°C
  3. Castor oil – the lubricant that you need to keep the engine operational
  4. Isopropyl Nitrate – ignition improver

I’m going to have to add to this thread as lots of discussion on “etherless” model diesel engine fuels.

References

About Nigel 228 Articles
Have been making models since I was around 7 years old and using a lathe from the age of 11, a self taught engineer with a passion for making model engines.

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