Steve Pierce
BENEFACTOR
Graham, TX
They use a 64 micron now, 10 was to fine.
New kid on the block - Smith Cub
- Thread starter Buzzcola777
- Start date
skywagon8a
MEMBER
SE Mass MA6
I agree with Steve. Consider, what happens if you clog that filter from the drum up north? How will you know there is a contaminate in there until the engine stops? There is no drain to clear it out. Any contaminate will just build until the fuel stops flowing and you will not have a clue there is an issue until the engine stops making noise. The gascolator is designed to collect the contaminates at the bottom of a bowl prior to the fuel going through the screen. It has a quick drain to dump those contaminates from the bowl. With this fine mesh screen installed where it is located no contaminates will ever get to the gascolator except perhaps water. It will clog with big particles. As Steve mentioned, the carburetor has a finer mesh screen which will catch any small particle which make it through the gascolator. I, like Steve have never found contaminates in the carb screen.
This airflow filter appears to be an accident waiting to happen if it is actually called upon to do it's job. If you really want to use it, place it after the gascolator.
Buzzcola777
MEMBER
Montreal, Canada
Well Gents, pretty solid arguments you've got there!!! I guess I'll have to review the last part from fuel selector to gascolator. Thanks for your comments!
Dan
Dan
Buzzcola777
MEMBER
Montreal, Canada
Fuel System - Fuel Selector valve Cover
In order to finish the fuel system installation, I made a cover for the fuel selector.
I have a 3D printer so I printed a cover made of ABS...Cool
Flood lights
The Fuel selector is a bit confusing...Big handle and a very small pointer. It is pretty tempting to use the handle as the pointer! So, I shortened the handle to fit the cover and...
...I printed a bigger pointer that I glued to the small one...No more confusion!
Made a paper clipart of a cub that you could turn into a sticker later on and positionned the selector on top. I will add Both/ L / R / Off
Installed on the side panel momentarily
Dan
In order to finish the fuel system installation, I made a cover for the fuel selector.
I have a 3D printer so I printed a cover made of ABS...Cool
Flood lights
The Fuel selector is a bit confusing...Big handle and a very small pointer. It is pretty tempting to use the handle as the pointer! So, I shortened the handle to fit the cover and...
...I printed a bigger pointer that I glued to the small one...No more confusion!
Made a paper clipart of a cub that you could turn into a sticker later on and positionned the selector on top. I will add Both/ L / R / Off
Installed on the side panel momentarily
Dan
Attachments
wireweinie
FOUNDER
Palmer, AK
The pointer is a fairly common mod. And, yes, the handle shape has caused problems occasionally, over the years.
Just a tip here, paint the pointer a contrasting or reflective color and it will show up much better in low light conditions.
Web
Just a tip here, paint the pointer a contrasting or reflective color and it will show up much better in low light conditions.
Web
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Buzzcola777
MEMBER
Montreal, Canada
Heating System - Part 1
I love winter flying and I also love getting some heat when I need it. So here is my 2-cents worth about putting together my heating system.
Looking at having the heat directed to the windshield when needed as well both sides of the instrument panel and on the floor.
I'm using a 2'' aluminum Tube .050'' for this system.
For the 90 degrees tubing, I downloaded a Tube & Pipe Miter Calculator in order to get the correct angle. There are plenty of these calculators on the Internet.
Lower section completed. this part will be attached to the cabin heat box on the other side of the firewall.
Welding done ready to put the kit together.
More to follow!
Dan
I love winter flying and I also love getting some heat when I need it. So here is my 2-cents worth about putting together my heating system.
Looking at having the heat directed to the windshield when needed as well both sides of the instrument panel and on the floor.
I'm using a 2'' aluminum Tube .050'' for this system.
For the 90 degrees tubing, I downloaded a Tube & Pipe Miter Calculator in order to get the correct angle. There are plenty of these calculators on the Internet.
Lower section completed. this part will be attached to the cabin heat box on the other side of the firewall.
Welding done ready to put the kit together.
More to follow!
Dan
Attachments
Last edited:
55-PA18A
SPONSOR
Dillingham, Alaska
Dan,
That's some mighty fine looking work. If you put windshield defrosters through the the dash, you might consider separate controls or some sort of diffuser. I've seen distorted windshields from too much heat. Also, are you going to get enough air moving through the system to make everything work?
Did you get your new gascolator? Whatcha think?
Jim
That's some mighty fine looking work. If you put windshield defrosters through the the dash, you might consider separate controls or some sort of diffuser. I've seen distorted windshields from too much heat. Also, are you going to get enough air moving through the system to make everything work?
Did you get your new gascolator? Whatcha think?
Jim
Buzzcola777
MEMBER
Montreal, Canada
Jim,
Thanks! I will have some sort of a diffuser for the windshield as well as a new concept (I think) for moving air through the system. You'll see it soon!
Now concerning the new gascolator...Oh La La...It's something else!! Just can't compare them! I'm glad that you guys picked that up!
Dan
courierguy
MEMBER
Inkom, Idaho
FWIW: Maybe it's the dry mountain air I fly in, but in 10 years of ski flying I've never felt the need for a windshield defrost vent (notacub, but a Rans S-7S, similar HVAC though). My cabin heat enters down by my toes, between the rudder pedals. I sure need it in my vehicles though, I wonder why my plane doesn't need it?
When I get into a cold plane my breath and body heat instantly fog the inside of the windows. Warming to take off is more about defrosting than warming the engine. If you have any moisture in your clothes the problem is more difficult to manage. Opening a window to promote airflow Through the defroster is pretty common.
Great work. My cub was set up with a rear seat heat box that go's directly to the dash for defrost, I have to be careful because it will make my GPS too hot. I run the stock floor heat through a scat tube under the seat to the rear. My wife loves the heat especially in the winter. My feet are usually too hot so I don't want any extra floor heat, in the winter turning on the rear seat heat helps keep the back of my neck warm. The scat hose is over 200 degrees thanks to the Attlee Dodge Hot Rod muffler. No right or wrong just things to ponder.
DENNY
DENNY
Buzzcola777
MEMBER
Montreal, Canada
All great comments Gents! Usually the pilot is comfy up front but the passenger suffers from cold. If I want to keep my wife supporting this project I better keep her warm in the back 
. Back to part 2 of the heating system...
. Back to part 2 of the heating system...
courierguy
MEMBER
Inkom, Idaho
I probably don't have a problem with foggy windows thanks to my tail/rudder post junction being uncovered. A trick I learned here, to make it easier to keep an eye on that heavily stressed area. Numerous other leaky areas also, ensure plenty of airflow, winter or summer, for better or for worse, but maybe a fog free front window is a unexpected benefit. My vehicles are tight, thus the need for a defroster in them.
Buzzcola777
MEMBER
Montreal, Canada
Courierguy,
Interesting concept here. Would you have a picture of this uncovered area?
Thanks!
Dan
Buzzcola777
MEMBER
Montreal, Canada
Quick question: What is the air temperature entering the cabin heat box / cockpit coming from the exhaust heat exchanger for a 0-360 engine?
Buzzcola777
MEMBER
Montreal, Canada
Denny, Thanks for your reply, very appreciated!
Buzzcola777
MEMBER
Montreal, Canada
Heating System - Part 2
I bought the basic standard homebuilders cabin heat box and modified it to have the arm moving up & down versus sideways.
Just a little bit of reverse engineering.
Here, the lower part connects to the Cabin Heat Box.
A better view of how heat will be distributed in the cockpit.
Early in the morning, taxing slowly on floats with mist in the windshield, you have lots of heat coming from the engine but no velocity to bring up there. So, in order to pump the warm air on top i needed some sort of a fan. Here what I did...
I bought an FMS Ducted Fan Jet 50mm - 11 blades / 12 V / 40A / Thrust 625g and integrated to 2 x 2'' ABS reducing coupling.
This turbine fits perfectly in the coupling and is sealed with clips...Easier for maintenance.
Since these fans are dedicated to Radio Control Aircraft, the Electronic speed controller needed to be converted from batterie (2200 mAh) to 12 V. A little fan was added to the cover and a bunch of holes to the support to take care of the heat generated by the system.
More to follow...
Dan
I bought the basic standard homebuilders cabin heat box and modified it to have the arm moving up & down versus sideways.
Just a little bit of reverse engineering.
Here, the lower part connects to the Cabin Heat Box.
A better view of how heat will be distributed in the cockpit.
Early in the morning, taxing slowly on floats with mist in the windshield, you have lots of heat coming from the engine but no velocity to bring up there. So, in order to pump the warm air on top i needed some sort of a fan. Here what I did...
I bought an FMS Ducted Fan Jet 50mm - 11 blades / 12 V / 40A / Thrust 625g and integrated to 2 x 2'' ABS reducing coupling.
This turbine fits perfectly in the coupling and is sealed with clips...Easier for maintenance.
Since these fans are dedicated to Radio Control Aircraft, the Electronic speed controller needed to be converted from batterie (2200 mAh) to 12 V. A little fan was added to the cover and a bunch of holes to the support to take care of the heat generated by the system.
More to follow...
Dan
Attachments
The fan is interesting but probably unnecessary. It'll be interesting to see if it improves the airflow. In a perfect world I'd like my Cub heat to have a cold air mixer that increased volume and reduced the temperature like a Cessna heater does. It wouldn't be hard to do in my plane but in truth I never use much heat. If I can take some of the chill off my face, ears, and fingers I'm good. The rest of me is dressed for the OAT.
Buzzcola777
MEMBER
Montreal, Canada
I can assure you it really improves the airflow. I tested it with a sheet of paper about 6 inches in front of the cabin heat box and it sucked it in all the way to the fan...Pretty powerfull. Now, by opening the lower flapping valve and by controlling the amount of hot air coming from the heat box I can mix the right temp going to the Windshield / Cockpit. That'll be interesting to see if it really works as advertised once the aircraft is flying in these different weather conditions.
Farmboy
MEMBER
Middlebury, VT
Have you flown this yet with the heat on?
I ask because I used an abs Y for a bit....until the heat in my 18-95 melted quite a bit of it..
Transmitted from my FlightPhone on fingers...
Buzzcola777
MEMBER
Montreal, Canada
Farmboy,
Not yet, still building the plane but as I mentionned earlier this hot air coming from the engine must be mixed with the cold air from the cockpit. In theory it should work but yet to be seen...
Not yet, still building the plane but as I mentionned earlier this hot air coming from the engine must be mixed with the cold air from the cockpit. In theory it should work but yet to be seen...
Hardtailjohn
Registered User
Marion, MT
I did a Stinson years ago, and the owner wanted fans in the ducts. We went with individual computer fans (they have something like a 10,000 hour life). They're much appreciated on cold and hot days.... especially when taxiing out.
John
John
Buzzcola777
MEMBER
Montreal, Canada
Heating System - Part 3
To finish this installation, I bought from Old Air Product different louvers in order to diffuse the air.
These ones are installed to diffuse the warm air to the windshield and around it. They swivel 360 deg.
Both scat tubes connected to the louvers
Better view
To get rid on the heat from radios and other gizmos I drilled couple holes on both sides.
These ones are installed on the instrument panel for cabin heat
On my way to next project!
Dan
To finish this installation, I bought from Old Air Product different louvers in order to diffuse the air.
These ones are installed to diffuse the warm air to the windshield and around it. They swivel 360 deg.
Both scat tubes connected to the louvers
Better view
To get rid on the heat from radios and other gizmos I drilled couple holes on both sides.
These ones are installed on the instrument panel for cabin heat
On my way to next project!
Dan
Attachments
Buzzcola777
MEMBER
Montreal, Canada
Brake Pedals...
While assembling for the umpteenth time the cabin sidewall I noticed that the rod bearings attached to the tubes welded to the brake pedals were rubbing slighty against that wall. To fix that problem I printed with the 3D a cover that is inserted in the wall to give a good clearance for the bearings & tubes movements.
Here is the problem...Rod bearing rubbing against the wall when moving the brake pedal.
Rough print out.
To make it smooth, I dissolve ABS chips in Acetone then apply it to the the part.
Ready to be installed.
Problem fix
Interesting quote:
Bill Peterson, a Florida State football coach:
"You guys line up alphabetically by height... and, "You guys pair up in groups of three, and then line up in a circle." :lol:
Dan
While assembling for the umpteenth time the cabin sidewall I noticed that the rod bearings attached to the tubes welded to the brake pedals were rubbing slighty against that wall. To fix that problem I printed with the 3D a cover that is inserted in the wall to give a good clearance for the bearings & tubes movements.
Here is the problem...Rod bearing rubbing against the wall when moving the brake pedal.
Rough print out.
To make it smooth, I dissolve ABS chips in Acetone then apply it to the the part.
Ready to be installed.
Problem fix
Interesting quote:
Bill Peterson, a Florida State football coach:
"You guys line up alphabetically by height... and, "You guys pair up in groups of three, and then line up in a circle." :lol:
Dan
Attachments
Dan,
I am very impressed with your fabrication skills, but it pains me to watch that plane getting heavier by the minute :???:,
You had mentioned emphasis on creature comforts earlier, but light nimble Cubs are such a pleasure to fly.
I should probably mind my own business, but weight adds up quick and should factor into every decision during build.
just my 2c
keep up the good work!
doug
I am very impressed with your fabrication skills, but it pains me to watch that plane getting heavier by the minute :???:,
You had mentioned emphasis on creature comforts earlier, but light nimble Cubs are such a pleasure to fly.
I should probably mind my own business, but weight adds up quick and should factor into every decision during build.
just my 2c
keep up the good work!
doug
Buzzcola777
MEMBER
Montreal, Canada
Hey Doug,
No worries, I welcome all comments. Yes you are right, it is a game of give and take. The projected Instrument panel will have one IPAD & one IPhone...No steam gauges. A Catto prop and for the last year I lost 20 pounds at the Gym...Just trying to compensate for the little goodies added to the plane...;-)
Dan
