8GCBC Take-off and Landing Performance Tables

TheNortherner

TheNortherner

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Smithers, BC
Just purchased a 74 8GCBC and I was surprised at how little information is in the manuals. I have the old Bellanca manuals and a copy of the ACA one with a revision as late as 93. Before I buy a manual from ACA, do the newer manuals have better information? Just trying to find out if they are worth anything or just another copy of a copy written on a typewriter with a new cover sheet. Thanks!
 

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Sorry you didn't get an informed answer.

Here is an uninformed one - the 2025 manual is probably identical to the 1993. It costs real $ to change an FAA approved document, and even more $ to do flight testing beyond that required when Bellanca got the type certificate. ACA is not a wealthy corporation.

Here, also, is an uninformed opinion. Actual performance may not match what a test pilot gets with a brand new airframe and engine. You would be far better off just checking your own bird's performance, especially range at comfortable power settings.

Figure out your gph (probably around ten) and plan your flights with a wristwatch. Don't stretch it, and don't rely solely on fuel gauges.
 
and if you really wanted to go into the details of performance, EAA sells a test flight manual that outlines task based flight testing. it includes tasks for determining Vx, Vy, and other performance metrics like takeoff and landing distances. You might find it worth your time to use your plane to go through these flight test tasks while determining what you were hoping to find in the POH.

just a thought.

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Thanks! Bob and Bartman. I'm a low hour pilot coming from a 172 for training and I'm just not sure what to expect for ground rolls, airspeed vs rpm(hp%) vs altitude, etc. My understanding of the Cessna published numbers is that they are "achievable by a pilot of average ability". After posting I actually found that the NTSB has a version of the new manual posted. NTSB 8GCBC Pilots Operating Manual
The flight test tasks seems like a great way to dial it in to my specific aircraft.
 
Standard Runway Light spacing is 200 feet. Standard runway center line dimensions are 120 long strip with 80 gap. (although some non-standard lights and marking exist.)

So if you start your roll abeam of a runway light then count them as you roll it will give you a good indication of your takeoff distance.
 
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