[TheForge] Electric Blower question

[Mike Linn]

If on your lowest setting you've got too much air then you've got too much 
blower. I've got a blower from an old 1950's air raid siren. It looks like 
a yellow Champion blower. I took the gearing off and put a direct drive fan 
motor on it. Wide open it will blow the coal out of my fire pot. I've found 
I can choke it down by restricting the input. I use a flap of tin that I 
rotate over the intake to choke the inflow. I also have an air-gate between 
the blower and the tuyere for the fine adjust.

If your using a squirrel cage blower, they do not like output restrictions. 
Try choking the input instead.

mike




>TOOL GYPSY wrote:
>
>>Hello all
>>    I installed an electric blower with a reostat on my forge. When on 
>> the lowest speed it is still running a bit to much air so i added an 
>> airgate.this works fine except the motor tries to compensate by speeding 
>> up a tad or three like a vacumn clener with your hand over the hose.My 
>> question is,  should i ignore this and see what comes of it.will this 
>> overheat the motor? or should i reroute the air to exhaust when the gate 
>> is closed ?
>>   Paddy P the wannabe
>
>
>            Mike Linn
>      Artist Blacksmith
>          McCalla, AL
>        AFC Webmaster
>http://afc.abana-chapter.com
>
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