Matronics Email Lists

I agree with your observations on weight and balance. If you can get the center of gravity right below the center of lift you won't need any trim tabs. I also like to calculate it with an empty ta ...

30 mm means it's made in Austria and imported. That is 1 1/8 in American. A standard 1" heater hose will be snug.

Respectfully,
Dennis Baber
Cape Coral, Fl
baberdk@gmail.com ([email ...

Good info on Lithium batteries. Also, they need to have the cells "balanced". They only charge until the cell with the most charge is charged and only discharge until the cell with the least ...

In order to have everyone view your postings on Facebook you have to set your permissions to "everyone". I have my granddaughter show me so I can't explain it. If you put it on YouTube e ...

I have thought about the CoG problem. It is a range that the plane will operate throughout. But when the plane is in the air, the center of lift of a wing is 25%. I think that is the point that the pl ...

I think the purpose of this list is to exchange ideas. My experience is that co-operation works better than confrontation. If you want to be confrontational then by all means get out and vote. But let ...

Yes, the opposite of lift is gravity but if you want to fly slow you increase the angle of attack. It will make you fly slower up to around 16 degrees.

Respectfully,
Dennis Baber
Cape Coral, ...

Instead of adding weight for CoG we would calculate where the battery should be to be in the middle of CoG. It is usually easy to move the battery and doesn't add any weight. It also helped the tr ...

Drooping the ailerons will increase angle of attack which increases lift.

Respectfully,
Dennis Baber
Cape Coral, Fl
baberdk@gmail.com ([email]baberdk@gmail.com[/email])
305-814-7218

St ...

When you lower the ailerons, you are lowering the rear of the chord for that wing section and the increased angle of attack produces more lift. It is the same on the ailerons and the flaps. The flaps ...

I found another solution to the aileron trim tab. This guy has his trim tabs move opposite direction of his trim tabs. See attachment:

Respectfully,
Dennis Baber
Cape Coral, Fl
baberdk@gmail ...

The problems I have found with Rotax CDI's is that people crank the engine with the secondary's not on a grounded spark plug. That will ruin the output coil and they are $700 new. (I ran a com ...

Do a weight and balance for your plane to see the maximum weight for your particular plane. The builder is considered the manufacturer so every plane is somewhat different. If you move weight around t ...

I'm not trying to offend anyone by giving my opinion. Dropping the ailerons together will work as trim. Here is another way that will work, your choice. See print attachments.

Respectfully, ...

My understanding is that spades are for aileron flutter.

Respectfully,
Dennis Baber
Cape Coral, Fl
baberdk@gmail.com ([email]baberdk@gmail.com[/email])
305-814-7218

Stay Curious

The induce drag would be an order of magnitude greater with ailerons changing pitch trim than at the tail. So why would you fly in cruse with your ailerons drooped?

On the Challen ...

Here is a good way to adjust carburetors on Rotax two cycles.

Respectfully,
Dennis Baber
Cape Coral, Fl
baberdk@gmail.com ([email]baberdk@gmail.com[/email])

Stay Curious

We have had some discussion about whether I should seal the gap between the flap and the aileron tube. What are the advantages and disadvantages of both ways?

Respectfully,
Dennis Baber
Ca ...

Two-cycle engines have their exhaust "tuned" to have a low-pressure wave at the exhaust port when the piston moves below the port. This helps pull fuel-air mixture into the cylinder whil ...

I would move the engine forward.