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Date: Sun, 09 Feb 2014 15:45:11 -0600
From: Charlie England <ceengland7@gmail.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Fwd: Fwf weight
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Your total weight really isn't bad, though. By the time I add a muffler, 
I could easily be pretty close to your weight.

On 2/9/2014 11:39 AM, Ed Anderson wrote:
> True, the braided SS line are heavy and undoubtedly not necessary - 
> but, hey, back in 1995 who knew {:>)
>
> Ed
>
> -----Original Message----- From: Charlie England
> Sent: Sunday, February 09, 2014 10:53 AM
> To: Rotary motors in aircraft
> Subject: [FlyRotary] Re: Fwd: Fwf weight
>
> I wish I'd weighed my O-320 Lyc installation when I had it off the -4
> for a top overhaul, but it just didn't occur to me at the time.
>
> The firewall portion of my mount (without the gear legs) weighs 15 lbs,
> so that makes 325 lbs plus any added weight for the muffler. I might be
> able to offset most of the muffler weight by building a stainless
> manifold; the stock portion on the engine weighs 9.3 lbs. The radiator &
> duct weighs 8.7 lbs, with just over a pound for its mounting brackets. I
> forgot to separately weigh the oil cooler/duct/mount, but it's not
> light. The engine mount adapters are massively over built, but the
> combined weight of all three plus the 'V' that ties the top mount to the
> main mount is just over 7 lbs.
>
> I remember you thinking that your installation could have been lighter
> without the stainless coolant lines. I suppose I shouldn't be too
> disappointed with this weight, but I had this vague hope of coming in
> under 300 lbs. Doesn't seem possible unless much lighter heat exchangers
> are available. Anyone manage to hit the 300 mark (without the firewall
> portion of the mount, of course)?
>
> Charlie
>
> On 2/9/2014 6:31 AM, Ed Anderson wrote:
>> Charlie, my FWF installation weighed in a 340 lbs that included 
>> everything including the motor mount (did not include prop).  
>> Included Engine, Gear box, starter, two radiators, oil cooler, 
>> ducting, exhaust header (no muffler) and intake manifold.  It also 
>> include a bunch of heavy -16 stainless steel braid radiator hoses and 
>> smaller oil and fuel lines (all SS braid) and their heavy fittings.  
>> It also include my small header tank and oil/air separator (since 
>> removed).
>>
>> Ed
>>
>>
>> -----Original Message----- From: Charlie England
>> Sent: Saturday, February 08, 2014 11:12 PM
>> To: Rotary motors in aircraft
>> Subject: [FlyRotary] Fwd: Fwf weight
>>
>> Anyone else weigh their installation? I'd like to know how this 
>> compares.
>>
>> This is dry weight, including all the mount adapter hardware that isn't
>> attached to the firewall, Richard's OMP adapter & OMP, intake manifold
>> (not including the sheet aluminum cover for the plenum), both heat
>> exchangers/diffusers, almost all the engine plumbing, and the 'core' of
>> the stock exhaust manifold (fairly heavy). It does not include a muffler
>> (6 lbs for the Aeroturbine AT2525) or the associated stainless tubing. I
>> even threw on a couple of plastic reservoirs to account for coolant &
>> 2stroke oil tanks. To be realistic, I'll probably need to add another
>> 10-15 lbs, minimum.
>>
>> Charlie
>
>
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