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Date: Fri, 02 Feb 2007 21:52:02 -0500
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From: "F. Barry Knotts" <bknotts@buckeye-express.com>
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Subject: Re: [LML] Re: DH Lines
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Yes! 

No doubt that the DHI hose would do an excellent job, once installed.  
The main reason not to use the DHI hose is the installation.  In order 
to get the lower end fitting down the gear leg, the nut must pass down 
the gear leg shaft.  In order to do that, you must drive out the gear 
leg trunnion shaft, since it nearly obstructs the gear leg shaft 
opening.  After it's down the gear leg, you must replace the trunnion 
shaft through the trunnion block and the gear leg.  In the case of the 
neat stainless steel kit that Lancair sells, only quarter inch stainless 
tubing passes down the gear leg and past the trunnion shaft.   Then put 
on the nut, flare it and attach it.  The upper attachment is to a 
Swagelok type fitting mounted on the gear trunnion block.  Just trim the 
stainless and attach to the Swagelok fitting.  Therefore, no nut to pass 
and no need to drive out that trunnion shaft.  Lancair has a nifty 
instruction set with pictures that I'm sure would explain it better than 
I can.  The down side to using the stainless is it requires one more 
connection in the hydraulic line, and every connection is an opportunity 
to leak or fail.  I judged I could deal better with a fitting I could 
observe directly over time then struggle with driving out and then back 
in the trunnion shaft.  I guess everything is a compromise.

Barry Knotts

Marvin Kaye wrote:
> Posted for "cblitzer" <cblitzer@triad.rr.com>:
>
>  Barry -
>  Any reason you do not use the DH lines in the gear legs themselves?
>  Thanks
>  Craig B.
>  L-IV-P
>  798CB
>
>
>   From: F. Barry Knotts
> """
>   I really like the DHI hoses.  I purchased mine directly from the US DHI
> distributor.  (DH Instruments Inc, 4765 East Beautiful Lane, Phoenix AZ
> 85048-5318 -- Tel 602 431 9100)
> """
>
> -- 
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