|| Graham Williams |
| Date :
|| 2002-01-23 18:17:41
| Subject :
|| Re:Mini Myers Initial Tests -- Long Post
- There is a fuel delivery problem at high flow settings: If there is sufficient fuel and air to achieve pulsing, a small amount of liquid fuel accumulates in the combustion tube and trickles rearward and drips from the tailpipe end, for a dramatic and colourful 'special effect'
Still look to droplet size, dispersion angle and cold walls.
This is quite a good way of getting relative information about particle size and dispersion from an atomizer.
Try to get a roll of the old style thermal printer paper. You will find it reacts to alcohol. You will also need a ruler or piece of wood about 1ft long.
Lay about 1m (1yd) out on a table. Mark a start line across the paper.
For comparison spray a short burst from an aerosol hair spray, placed about 1ft up and over the start line. If you spray too long it will saturate the paper.
Load your ‘Flowjector’ tank with Alcohol or Alcohol/water (try 60/40) mix. Layout a fresh sheet of paper, and spray. I’ll leave it to you to determine the best spray time and height.
You should be able to quickly see the effects of any small changes to injector design and see the influence of the Carb’ design.
For others who may want to try this, remember you are making a potentially explosive air fuel mixture. Do not do it in the kitchen.
Some years ago I was researching aerosol design and this would be one of the simple 1st line tests we would carryout when investigating atomizer design changes.