[Public-list] Flexible shaft coupling

[Mike Lehman]

Lee,

I bought one from Vetus http://vetus.com/. There online catalog is not much 
help, but I an using their Bullflex coupling and it works great. It is 
metric so it means taking you shaft to a machine shop and having turned so 
it will fit in the coupling. It permits for a 2% misalignment up to 3000 
RPM. Since our shaft RPM is around 1500 (Atomic 4 1:1 or diesel ~ 2:1), it 
is well within the range of operation. Even with this device, I have the 
engine aligned within the .004 tolerances as recommended by the engine 
manufacturer. Remember that this measurement is taken with the engine off 
and no load. With a diesel replacement engine, the engine is mounted on flex 
mounts. Because of these mounts, when the engine is started and and placed 
under load [forward or reverse] the engine moves and the angle between the 
engine and the shaft changes. It is for that very reason that I think it is 
essential to have a flex coupling if the engine [any engine] is mounted on 
flexible mounts.

Mike Lehman
><((((º>¸.·´¯`·...¸><((((º>


----- Original Message ----- 
From: <FINNUS505 at aol.com>
To: <public-list at alberg30.org>
Sent: Friday, October 22, 2004 11:48 PM
Subject: [Public-list] Flexible shaft coupling


> Hey Alberg friends,
>
> Does anyone have any experience with flexible shaft couplings, the idea
> being making engine alignment not so critical? I'm going to be reinstaling 
> the
> new engine when I get it, and if I can avoid having to do a very precise
> alignment.............well, need I say more?:)
> thx,
> Lee
> Stargazer #255
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