Thank you for not only taking the time to share this valuable tip regarding the importance of fuel flow but your humbleness in sharing an experience that for most would be embarrassing to share, reality is everyone wins from sharing all things good and things that don’t go as planned. Your approach reveals your genuine desire to explore, expand, and grow, sharing with others and we all benefit. Thank you. 😎👍
The reserve capacity of the float bowl and gascalator saved your plane. I hate how much aviation spec parts cost, but mower parts are a few bucks for a reason :) Glad it worked out in the end.
For those that use ryco z15 filters of which are quite popular in ultralight/light sport aircraft in Australia. the internal diameter of the filter inlet/outlet has recently reduced to around 3.1-3.2mm, an alternative is the repco branded RPF1415 which has an internal diameter of around 4.5-4.7mm! I would hate to see someone get caught out by this!
Just a suggestion, but I always use automotive fuel line and ratcheting plumbers clamps, that transparent line is for weed whackers & model airplanes. Good video about how a small change can effect the hole system, thanks for sharing!
Hagen-Poiseuille law in fluid dynamics: the pressure drop through a long cylindrical pipe is proportional to 1/R^4. E.g. a reduction of the diameter to 50 % is equal to a reduction of flow to 1/16 which is rather counterintuitive!
are you sure that filter is right. usually you can see the dirt on the outside. the eay you have it the dirt is being collected on the inside of the filter
Maybe it was the lighting or something, but that gasoline looked nasty, and the color was much darker than the gas in the U.S. I thought they colored it the same, do they?
I’ve never seen a speck of debris in any fuel filter except the in tank fuel filter on a chainsaw and I’m sure it was sawdust. Could you use an in tank filter or bypass the filter all together? There’s no rust inside an aluminum or plastic tank.
3:18 You don't understand how that filter is supposed to operate. It doesn't have to fill up all of the way. As long as the outlet stays submerged in fuel, it's doing its job and flowing properly. You wouldn't run it this long in an aircraft configuration, but as it fills up with debris, the resulting back pressure will increase the level of fuel in the unfiltered cavity.
He has the filter upside down . I would not ever use plastic filters they leak I have seen many V/W engines burn. never put a fuel filter between the fuel pump and the carb. If you have a leak the pump pressure will increase the leak and cause the fuel to spray worse. I only use the Glass filters and you can buy refills in the long run they are cheaper.
I drive a ‘71 VW bus. Fuel starvation after carburetor modifications is quite a common thing on them. Particularly if someone goes from a single carb to dual carbs requiring not necessarily greater than stock flow, but for the lines to be in good shape and a good clean filter to be in the line. Well done on the landing. It would be quite normal for the run up to be fine only to discover the starvation under the load of takeoff. I fought that with my bus. Under normal, level road driving conditions it would run great and if I tried to pull a hill for any distance it would bog down slowly but surely. It turned out the fuel filter I had changed fairly recently had plugged up pretty quickly.
Why in the world would you not use brass fittings? I don’t even use plastic fittings on my motorcycles. I also doubt those fancy colored fuel lines are not approved for gasoline.
I wonder if you could use a low pressure diaphragm pump, used on motorcycles and other carb setups, they maintain pressure and stall when reaching max pressure (wont push open the float needle) I had a 1987 honda vfr700 that used one. down side is power draw might be a few amps or so.
I have seen that blue fuel line turn to dust over time. I prefer to use fuel injection rated black rubber hose. In the States, fuel flow numbers are part of the pre-licensing/inspection process.
Very good video, showing just how all the little mods can end up with a big negative effect. I do a longer engine run that you do (normally 2mins after engine up to temp and then a short one of 20 to 30 secs before lining up if it is humid / cold to ensure no icing from long taxi). Well done for getting it down safe, as least the wind was not too strong for the cross wind landing.
@@DCSquared Well you do have two aircraft. I can't be picky as if I only flew on nice days I would only get less then 10hrs a year, so I fly when there is a good safety margin but not perfect (mind you I am indoors in the Kub).
Hi, sorry for the (maybe) silly question but shouldn't you have found out about the issue before going airborne by doing ground tests at full throttle? Maybe by tethering the aircraft from the tail if the brakes aren't sufficient to hold it steady at full power
3:38 Debris plugging fuel filter is HIDDEN inside the fiber element in this flow orientation. Want flow directed so trash is deposited on OUTSIDE of fiber element. My humble armchair-builder opinion.
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Thank you for not only taking the time to share this valuable tip regarding the importance of fuel flow but your humbleness in sharing an experience that for most would be embarrassing to share, reality is everyone wins from sharing all things good and things that don’t go as planned. Your approach reveals your genuine desire to explore, expand, and grow, sharing with others and we all benefit. Thank you. 😎👍
Handled that emergency landing like a pro! Thanks for sharing.
The reserve capacity of the float bowl and gascalator saved your plane. I hate how much aviation spec parts cost, but mower parts are a few bucks for a reason :)
Glad it worked out in the end.
So refreshing to have a pilot refer to height above the ground and not altitude as the yanks always say!! Good job on the video!
Good job on a safe emergency landing!
Thanks!
For those that use ryco z15 filters of which are quite popular in ultralight/light sport aircraft in Australia. the internal diameter of the filter inlet/outlet has recently reduced to around 3.1-3.2mm, an alternative is the repco branded RPF1415 which has an internal diameter of around 4.5-4.7mm!
I would hate to see someone get caught out by this!
That is great info. Thanks Aaron!
Just a suggestion, but I always use automotive fuel line and ratcheting plumbers clamps, that transparent line is for weed whackers & model airplanes. Good video about how a small change can effect the hole system, thanks for sharing!
Wow, I bet she's one happy bird now...Gotta "big gurl " straw instead of a "Sippy cup"....😊👍👍!!!
Sharing this type of information is very usefull. I'd rather find out this info while still on the ground.
My 1st reaction during the flight part of the video was 'carb ice'.
Hagen-Poiseuille law in fluid dynamics: the pressure drop through a long cylindrical pipe is proportional to 1/R^4. E.g. a reduction of the diameter to 50 % is equal to a reduction of flow to 1/16 which is rather counterintuitive!
Hi i would apriciate it a lot if you could explain me how to choose the correct airfoile.
Use a screen filter instead of paper. Paper absorbs moisture and prevents flow
Good catch!
Thanks!
are you sure that filter is right. usually you can see the dirt on the outside. the eay you have it the dirt is being collected on the inside of the filter
air in a sideways mounted fuel filter is fine, 100k mowers in the usa run that way for decades
thnx for the info
Hello. I watched a great video. I have a question. I'm wondering if I've used motorcycle engines to make legal eagles. How can you help with this?
Maybe it was the lighting or something, but that gasoline looked nasty, and the color was much darker than the gas in the U.S. I thought they colored it the same, do they?
I’ve never seen a speck of debris in any fuel filter except the in tank fuel filter on a chainsaw and I’m sure it was sawdust. Could you use an in tank filter or bypass the filter all together? There’s no rust inside an aluminum or plastic tank.
3:18 You don't understand how that filter is supposed to operate. It doesn't have to fill up all of the way. As long as the outlet stays submerged in fuel, it's doing its job and flowing properly. You wouldn't run it this long in an aircraft configuration, but as it fills up with debris, the resulting back pressure will increase the level of fuel in the unfiltered cavity.
He has the filter upside down . I would not ever use plastic filters they leak I have seen many V/W engines burn. never put a fuel filter between the fuel pump and the carb. If you have a leak the pump pressure will increase the leak and cause the fuel to spray worse. I only use the Glass filters and you can buy refills in the long run they are cheaper.
Good job. Not going to lie my instinct probably would have been to try to land straight ahead, but I think you made the better call.
Nice !
Can you tell me what the incidence of the tail is compared to the wing incidence?
I drive a ‘71 VW bus. Fuel starvation after carburetor modifications is quite a common thing on them. Particularly if someone goes from a single carb to dual carbs requiring not necessarily greater than stock flow, but for the lines to be in good shape and a good clean filter to be in the line. Well done on the landing. It would be quite normal for the run up to be fine only to discover the starvation under the load of takeoff. I fought that with my bus. Under normal, level road driving conditions it would run great and if I tried to pull a hill for any distance it would bog down slowly but surely. It turned out the fuel filter I had changed fairly recently had plugged up pretty quickly.
I wonder if double eagle(double seater) can be used for FFA PPL training?
Glad that worked out... What is a gascalator?
It's a fuel drain for water and small particles of sediment.
Hope this helps everyone !!!
what engine is that ??
What is your max airspeed?
Doesn't e10 include 10% ethanol which is a type of alcohol in the mogas?
e10 is not compulsory in Australia and no one tends to use it
Would have been nice to also see the fuel flow BEFORE the mod.
But interesting anyways. Thanks !
Why in the world would you not use brass fittings? I don’t even use plastic fittings on my motorcycles. I also doubt those fancy colored fuel lines are not approved for gasoline.
I wonder if you could use a low pressure diaphragm pump, used on motorcycles and other carb setups, they maintain pressure and stall when reaching max pressure (wont push open the float needle) I had a 1987 honda vfr700 that used one. down side is power draw might be a few amps or so.
I don't have an electrical system. Engine spark is powered by a magneto after a hand prop start.
i would use automotive reinforced black rubber fuel line
I have seen that blue fuel line turn to dust over time. I prefer to use fuel injection rated black rubber hose. In the States, fuel flow numbers are part of the pre-licensing/inspection process.
Very good video, showing just how all the little mods can end up with a big negative effect. I do a longer engine run that you do (normally 2mins after engine up to temp and then a short one of 20 to 30 secs before lining up if it is humid / cold to ensure no icing from long taxi). Well done for getting it down safe, as least the wind was not too strong for the cross wind landing.
It's all good learning and sharing for others. I'm a bit of a fair weather pilot in the Legal Eagle :)
@@DCSquared Well you do have two aircraft. I can't be picky as if I only flew on nice days I would only get less then 10hrs a year, so I fly when there is a good safety margin but not perfect (mind you I am indoors in the Kub).
Wow
a1 vid mate
Glad you got something from it :)
Nice plane! I'd use automotive fuel line besides that!
please get an air filter for your carburetor lol all it takes is one piece of debris to have a bad day
Hi, sorry for the (maybe) silly question but shouldn't you have found out about the issue before going airborne by doing ground tests at full throttle? Maybe by tethering the aircraft from the tail if the brakes aren't sufficient to hold it steady at full power
3:38 Debris plugging fuel filter is HIDDEN inside the fiber element in this flow orientation. Want flow directed so trash is deposited on OUTSIDE of fiber element. My humble armchair-builder opinion.
The filter was quickly held in place just for the video and was noted as being the wrong away around (upside down)
you have a nasty vaibration in your motor need to check your prop balance