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Subject: Re: [LML] Re: Odyssey PC680 Batteries on Firewall -- Cool Enough?
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From: "Greenbacks, UnLtd." <n4zq@verizon.net>
In-reply-to: <EB9EC9EA-407F-4657-AB26-DD22FA6C9BF9@starflight.aero>
Date: Mon, 21 Oct 2013 23:06:59 -0400
Cc: Ralph Love <ralphlove@stanfordalumni.org>,
 List Lancair Mailing <lml@lancaironline.net>
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 <EB9EC9EA-407F-4657-AB26-DD22FA6C9BF9@starflight.aero>
To: Valin & Allyson Thorn <thorn@starflight.aero>

OK, there is no good reason to have the weight of the pump, relays, =
wiring and hydraulic plumbing that far aft.
This is not original thinking on my part, just common sense and =
following the advice of other builders who blazed this trail before me.
I don't know about the Legacy, but 235, 320 and 360 generally need help =
in the aft CG department.
Just for giggles, try servicing the pump and related systems located aft =
of the baggage compartment.
It's not a pretty picture.
You'll need to employ the services of a midget gerbil with superior =
digital dexterity.
Even if you don't have an aft CG issue, you will need to remove the pump =
and or relays some day.
I went through 3 relays and 2 emergency gear extensions in the first ten =
hours before correctly installing diodes on the relays.
Without the pump and relays behind the seat it would have been a major =
pain to trouble shoot and repair.

While on the subject of aft CG and at the risk of starting yet another =
food fight, I added a lot of unnecessary (in my humble opinion) weight
to my rudder in an attempt to achieve 100=BA mass balance. I suspect my =
CG could have been an inch further forward without all that
extra lead in the rudder. Nevertheless, I have excellent elevator trim =
throughout the entire speed envelope.

Angier Ames
N4ZQ
74hrs


On Oct 21, 2013, at 6:13 PM, Valin & Allyson Thorn wrote:

> Hi Angier,
>=20
> Please let me know your arguments for mounting the hydraulic pump =
directly behind the seat. Really appreciate your expertise.=20
>=20
> Ralph was interested in this too, so copying him.=20
>=20
> Thanks,
>=20
> Allyson
>=20
>> On Oct 21, 2013, at 1:30 PM, "Greenbacks, UnLtd." <N4ZQ@VERIZON.NET> =
wrote:
>>=20
>> Hi Valin,
>>=20
>> Move your hydraulic pump from its current location.
>> Create a small bulkhead and put the pump directly behind your seat.
>> The reasons are too numerous to list!
>> Don't even think twice about making this change.
>> Equally important, locate your pump breaker within easy reach on your =
panel.
>>=20
>> Angier Ames
>> N4ZQ
>> 69hrs
>>=20
>> --
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