Velocity Stacks

[fat50]

Hey All,

Every motor I've built that has the 8 velocity stacks, Has had the stacks going in 8 differtent directions!!

I'm courious What's everybodies secret to getting perfect stacks??

[Harry P.]

Mark's tip #2 is good, but a little, uh... labor intensive! And, it assumes you will drill all the holes perfectly straight and parallel to each other. Highly unlikely...

Here's the lazy man's way:

Use 5-minute epoxy or slow setting superglue to glue one stack (one on the corner) in place. Use the setting time to make adjustments, eyeballing the stack to make sure it's straight when viewed from both the front and the side. Once it dries, it's your reference for the other seven. Glue one at a time, using the first one as your guide to line up the next one. That's how I do it when I need to get several vertical items in alignment, for example a railing on a ship model. I glue the first post, adjust it to be straight, and use it as a visual reference to "eyeball" the rest of them.

[Jairus]

That's very good Harry!

I was going to suggest spacers and whatever but that actually makes sense.

Edited January 2, 2011 by Jairus

[Harry P.]

That's very good Harry!

I was going to suggest spacers and whatever but that actually makes sense.

Not only makes sense, but works! Because the stacks are so close together, it's very easy to see just by looking if one is "off"... so by using the first one as your visual guide, it's easy to line up the rest of them.

[Smart-Resins]

One way is to make your own aluminum stacks and use a straight pin. You can glue a smaller diameter plastic tube into the velocity stack. Then glue the straight pin in, leaving the plastic ball on the top light how they used to drop the tennis balls ontop of them so that rain would not go down them.

[fat50]

Thanks for the ideas guys! I'm going to try the "upside down manifold" method first.