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Author Message
  Topic: FireFly Weight and Balance
baberdk

Replies: 18
Views: 12528

PostForum: Kolb-List   Posted: Wed Aug 28, 2019 8:01 am   Subject: FireFly Weight and Balance
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 ...
  Topic: 912 radiator?
baberdk

Replies: 13
Views: 8091

PostForum: Kolb-List   Posted: Wed Aug 21, 2019 6:21 am   Subject: 912 radiator?
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 ...
  Topic: Back-Up Battery
baberdk

Replies: 8
Views: 5330

PostForum: Kolb-List   Posted: Thu Feb 14, 2019 6:30 am   Subject: Back-Up Battery
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 ...
  Topic: Rock House FlybyRe: Rock House Flyby
baberdk

Replies: 1
Views: 2530

PostForum: Kolb-List   Posted: Sat Sep 08, 2018 4:53 am   Subject: Rock House FlybyRe: Rock House Flyby
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 ...
  Topic: Firestar Re-Configure Project
baberdk

Replies: 29
Views: 22194

PostForum: Kolb-List   Posted: Sun Sep 02, 2018 8:00 am   Subject: Firestar Re-Configure Project
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 ...
  Topic: Another opinoin
baberdk

Replies: 3
Views: 3680

PostForum: Kolb-List   Posted: Wed Aug 29, 2018 7:23 am   Subject: Another opinoin
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 ...
  Topic: Kolb-List:Stabilizer Angle
baberdk

Replies: 117
Views: 65108

PostForum: Kolb-List   Posted: Tue Aug 14, 2018 5:49 am   Subject: Kolb-List:Stabilizer Angle
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, ...
  Topic: Kolb-List:Stabilizer Angle
baberdk

Replies: 117
Views: 65108

PostForum: Kolb-List   Posted: Tue Aug 14, 2018 5:48 am   Subject: Kolb-List:Stabilizer Angle
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 ...
  Topic: Kolb-List:Stabilizer Angle
baberdk

Replies: 117
Views: 65108

PostForum: Kolb-List   Posted: Mon Aug 13, 2018 5:46 am   Subject: Kolb-List:Stabilizer Angle
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 ...
  Topic: Kolb-List:Stabilizer Angle
baberdk

Replies: 117
Views: 65108

PostForum: Kolb-List   Posted: Mon Aug 13, 2018 5:26 am   Subject: Kolb-List:Stabilizer Angle
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 ...
  Topic: Spads
baberdk

Replies: 12
Views: 7473

PostForum: Kolb-List   Posted: Sun Aug 12, 2018 7:31 am   Subject: Spads
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 ...
  Topic: Spads
baberdk

Replies: 12
Views: 7473

PostForum: Kolb-List   Posted: Sun Aug 12, 2018 7:24 am   Subject: Spads
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 ...
  Topic: too much weight i guess ...
baberdk

Replies: 3
Views: 2984

PostForum: Kolb-List   Posted: Sun Aug 12, 2018 6:24 am   Subject: too much weight i guess ...
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 ...
  Topic: Spads
baberdk

Replies: 12
Views: 7473

PostForum: Kolb-List   Posted: Sun Aug 12, 2018 6:08 am   Subject: Spads
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, ...
  Topic: Firestar/HKS First FlightRe: Firestar/HKS First Flight
baberdk

Replies: 1
Views: 2113

PostForum: Kolb-List   Posted: Wed Aug 08, 2018 5:46 am   Subject: Firestar/HKS First FlightRe: Firestar/HKS First Flight
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 
  Topic: Firestar/HKS First Flight
baberdk

Replies: 36
Views: 21195

PostForum: Kolb-List   Posted: Wed Aug 08, 2018 5:26 am   Subject: Firestar/HKS First Flight
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 ...
  Topic: best propsRe: best props
baberdk

Replies: 0
Views: 2023

PostForum: Kolb-List   Posted: Tue Jan 09, 2018 6:41 am   Subject: best propsRe: best props
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
  Topic: Gap Seal
baberdk

Replies: 0
Views: 2107

PostForum: Kolb-List   Posted: Mon Jan 01, 2018 4:12 am   Subject: Gap Seal
  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 ...
  Topic: My Firestar Project Update
baberdk

Replies: 6
Views: 5974

PostForum: Kolb-List   Posted: Fri Dec 29, 2017 9:14 am   Subject: My Firestar Project Update
 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 ...
  Topic: Flying Mk 3 Xtra tail heavy
baberdk

Replies: 6
Views: 5896

PostForum: Kolb-List   Posted: Thu Nov 16, 2017 2:39 pm   Subject: Re: Flying Mk 3 Xtra tail heavy
I would move the engine forward.
 
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