[TheForge] Cylinder Size

Fri Jul 11 19:50:00 2003

One of the problems I've noticed is the relatively soft hit if the Kinyon
style hammers.
 I suspect the automatic reversing switch in the single pilot control is
valve is the culprit, since the piston switches direction before the hammer
hits the billet. This also reduces dwell time of the hammer on the billet.
A double pilot control valve will eliminate this problem but the bottom
pilot valve must be adjusted for the billet thickness.
Is there any brave soul out there who has played around with stroke
completion sensors to maximize hammer dwell time and automatically adjust
for stock thickness?
Chuck
----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Sent: Friday, July 11, 2003 2:13 PM
Subject: Re: [TheForge] Cylinder Size


> If you go with a larger bore on the cylinder you would need to also have
the ports on the cylinder and and the valve be as large as possible.The
trick is the amount of air flow you can get through the system as fast as
you can get.You can have a large bore cylinder with big ports but if the
valve ports are small and have a low cv rating then it will not cycle that
fast.I have a 2" bore cylinder on my 25lbr with 3/8" ports on both the
valve(which also has a high cv rate)and cylinder.it will do 240 beats
/minute before that I had the same style valve with 1/4" ports and a lower
cv and could only get 180 beats/minute
>
> --
> Bob
> HotAnvil Forge
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