what is the plenum on and air hockey table? And how big does it have t

[yamaha605]

i am building an air hockey table and designed it to have a 3mm gap between the playing surface and the base the table 1500mm by 900mm. i read somewhere that the gap has to be 2inches is this true can anyone help me out. A.s.a.p please this is rather urgent
thanks jeff

 

[spector]

Sure, 3MM will work....Just put wheels on your pucks.

Next question....

 

[ChasBean1]

This is a very interesting question with a lot of potential answers. As delicately hinted at by Mr. Specter above, 3mm is pretty small. I think it could be possible, but with numerous injection points and more (and smaller) holes. But still there's likely to be major dead spots on your table. There's some talk about air hockey table design here for some info:

thread403-28546 you make the 3mm any bigger or are you stuck with it? What is your fan capable of?

 

[VEEKRISH]

Yamaha605,
To avod dead spots (very desireable), the larger the perforations, the better. In fact better to have as large a number of perforations of smaller dia, so that you are able to maintain the air velocity required to support the puck. Air quantity required may not be large, but the pressure at which the fan has to deliver the air will be high. I think 3mm gap will make it higher. Practical to have about 80 mm to 100 mm gap, I think.