by Chappy » Fri Apr 30, 2004 8:57 pm
Shannon,
If I had a larger Lathe, I think I could form the velocity stacks using a method similar to what they do at your link. Anyway, thanks for the link, it's got me thinking about possible ways to make them in my shop.
I could machine them from bar, but they would be awfully heavy, and I would be concerned too about overstressing the mounting screws. Machined velocity stacks seem to be a very popular accessory for all the new little 2 cycle scooters on the market, and they have little bitty carbs with small screws. It appears they are looking basically at smoothing the airflow into the carb with stubby stacks, were as we are also looking to protect the fuel standoff from the prop blast, etc. as much as possible using long stacks, therefore perserving the proper fuel mixture. Long machined stacks would be rather massive. Besides, bar stock is expensive!
Chappy