REFLECTOR: 173 Gross Weight-Was Brake authority

[Tom Martino]

My gross is 2900 lbs.  I have a fuil 300 horsepower (high compression
IO-540).

I true out at around 205 to 210 knots.

I converted it to a two-seater (coupe).  I made the back a platform for
baggage (gold clubs etc.).

The seat studs are still there and so are headset jacks so it can be easily
converted back to a four-place.

I did not build it for a family cross-country machine.  I simply wanted a
"screamer" ... A sports car in the sky.

Now ... Here is the mystery ... My empty weight is 1800 lbs.  That's because
my gear legs, wings and bottom are beefed up.



On 6/7/07 6:30 AM, "Joe Ewen" <Jewen at comporium.net> wrote:

> snip: a 173 Elite RG (with the IO-360) ... which weighs almost as much as an
>> XL.
> 
> Hi Tom,
> I presume your comment about weighting as much as an XL was aimed towards
> the gross weight.  I found your comment interesting in that I am building a
> 173 RG, with a 20B rotary engine (3 rotor, that should make an easy 250 HP,
> 300 if I got the higher compression rotors, intake porting and induction
> system right.)  I too want a higher gross than the standard specs (nice to
> fill the AC with both fuel and passengers.)  My logic is the 173 has the
> same wing as the XL so it should have the same lift capability as an XL,
> just needs the HP (AC will likely be turned off for takeoff) to keep it
> moving through the air which the rotary should provide.
> 
> My question is how much have you upped the gross and what performance have
> you experienced or have you had any negative effects ?
> 
> Thanks,
> Joe
> 
> 
> ----- Original Message -----
> From: "Tom Martino" <tmartino at troubleshooter.com>
> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> Sent: Wednesday, June 06, 2007 9:56 AM
> Subject: Re: REFLECTOR: Brake authority
> 
> 
>> I have never had a problem with the Matco w600XTs.  However, I am flying
>> a 173 Elite RG (with the IO-360) ... which weighs almost as much as an
>> XL.
>> 
>> Tom
>> 
>> -----Original Message-----
>> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
>> Behalf Of Mike Dawson
>> Sent: Wednesday, June 06, 2007 7:42 AM
>> To: Velocity Aircraft Owners and Builders list
>> Subject: Re: REFLECTOR: Brake authority
>> 
>> Thanks for that Dave. It does seem to be the
>> consensus.
>> Mike
>> 
>> --- David Bertram <n350tx at tx.rr.com> wrote:
>> 
>>> Mike, I was not satisfied with the Matco brakes.
>>> The Cleveland brakes are
>>> definitely superior.
>>> Dave Bertram
>>> 383 chevy flying
>>> 
>>> -------Original Message-------
>>> 
>>> From: Velocity Aircraft Owners and Builders list
>>> Date: 06/05/07 09:09:13
>>> To: Velocity Aircraft Owners and Builders list
>>> Subject: REFLECTOR: Brake authority
>>> 
>>> Scott
>>> My brother and I are slowly building a XLFG. It was
>>> one of the first,1999, consequently we have the W600
>>> matco brakes not even the w600xt's. We have only
>>> taxied with them , with toe brake upgrade, and I
>>> find
>>> them woefully weak. Do you think Velocity would
>>> consider a trade up to the XT's since that is what
>>> they put in the newer models or is my only option
>>> $$$$?
>>> Mike
>>> 
>>> --- Scott Baker <sbakr at comcast.net> wrote:
>>> 
>>>> Don't forget the weight of the aircraft.
>>>> The XL GTOW is hundreds of pounds more than the SE
>>>> and LW/173, which of
>>>> course affects the stopping power of the brakes.
>>>> SB
>>> 
>>> 
>>> 
>>> 
>>> 
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> 
> 
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