Hydraulic power pack location

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From: Marvin Kaye <marvkaye [at] olsusa.com>
Subject: Re: Hydraulic power pack location
Date: Thu, 22 Oct 1998 19:42:14 -0400
To: <pine [at] CPro.co.za>, <lancair.list [at] olsusa.com>

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Pine....



Re: hydraulic power pack location, I'm sure you'll soon find out that there

are several alternative locations being used by various builders.  A few of

the favored spots seem to be behind the passenger seatback or mounted to

the backside of the firewall in 3x0's without a header tank.



  <Marv>

Hydraulic power pack location

From: Donald Gordon <BlueSkyComputer [at] compuserve.com>
Sender: Donald Gordon <BlueSkyComputer [at] compuserve.com>
Subject: Re: Hydraulic power pack location
Date: Thu, 22 Oct 1998 22:29:40 -0400
To: Lancair Mail List <lancair.list [at] olsusa.com>

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Pine,



        I have no header tank and I have mounted the hydraulic power pack

above the right side rudder pedals (which I've now learned don't work)

attached to the top of the forward deck.  I've also mounted my battery

above the nose gear tunnel with access from a lid cut in the forward deck.

I haven't done a weight and balance yet so I'm curious to how this will all

work out.  I also have a wood prop so I need as much weight forward as I

can get.





Don Gordon

Hydraulic power pack location

From: Pieter Pienaar <Pine [at] CPro.co.za>
Subject: Hydraulic power pack location
Date: Thu, 22 Oct 1998 21:35:19 -0700
To: <lancair.list [at] olsusa.com>

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Hi



Is it wise to install the power pack behind the baggage bulkhead.???

I will use a wood, carbon fixed pitch prop and are worried about CG

Also is that the only place for the 50 amp breaker.



Thanks

--

Pine Pienaar

pine [at] cpro.co.za

Lancair 360 #664

Hydraulic power pack location

From: by way of Marvin Kaye <marvkaye [at] olsusa.com> <dechaze [at] cardell.com>
Subject: Re:Hydraulic power pack location
Date: Fri, 23 Oct 1998 09:10:11 -0400
To: <lancair.list [at] olsusa.com>

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Pine asks about the best place for the hydraulic powerpack and hardpoints...



I put the unit behind the passenger seat on my 360.  This was recommended by

Orrin at Lancair.  It has turned out to be a blessing since you have to monkey

with the installation, plumbing, wiring, testing etc.  quite a bit.  Getting

back behind the baggage bulkhead to do all these  things would be a real

stinker.  Othe benefits are that the wiring and plumbing are a little shorter,

easier, lighter.  Depending on how you want to orient the unit, you'll need to

fabricate a small bulkhead to mount the pump against.  I cut a hole in the

seat

for an access panel so that I can get at the system.  You'll see all this when

you get to that point.  



Concerning hard points, you have a good idea.  Shape doesn't matter, just

distribute the loads in a reasonable manner.  I generally did mine with the

dremel and jig sawed the phenolic but you have a good idea.  



Somebody else mentioned replacing the nose gear gas strut on the IV when it

gets

easy to compress.  On the 360 the procedure is to test the free fall

capability

in-flight with the pump disabled.  If the strut doesn't push the nose gear

down

against slipstream, replace it.  Does the IV not have this procedure?



A list of max. bolt torques is provided in the Lancair 360FB builder's

manual in

the engine installation chapter (21 I believe).



Ed de Chazal

Rochester, Michigan

Hydraulic power pack location

From: Howard "Rusty" Hamer <hamer [at] gv.net>
Subject: Hydraulic power pack location
Date: Fri, 23 Oct 1998 08:24:28 -0800
To: <lancair.list [at] olsusa.com>

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Put the 50amp breaker where you can get to it easily in flight. I had a

failure where the solenoid stuck on and the only way to turn the pump off

was by pulling the 50amp breaker. I have heard that the pump causes the

fluid to overheat and the aircraft fills with smoke after the pump runs for

very long.



Rusty