new throttle quadrant question
Posted: Sun Oct 02, 2022 3:50 pm
by Johns
Just installed left hand side quadrant, works/slides well but friction lock doesn"t seem to work. I screw that thing nice and tight and it still moves quite freely. I see only one friction washer, I 'm wondering if there supposed to be two?
Any thoughts? John
Re: new throttle quadrant question
Posted: Sun Oct 02, 2022 4:15 pm
by XenosN42
Johns wrote:Just installed left hand side quadrant, works/slides well but friction lock doesn"t seem to work. I screw that thing nice and tight and it still moves quite freely. I see only one friction washer, I 'm wondering if there supposed to be two?
Any thoughts? John
Only one washer as shown on page 4 of this document: http://www.aeroconversions.com/support/instruction_sheets/Throttle_Quad_Install.pdf
Re: new throttle quadrant question
Posted: Sun Oct 02, 2022 4:58 pm
by GraemeSmith
Johns wrote:Just installed left hand side quadrant, works/slides well but friction lock doesn"t seem to work. I screw that thing nice and tight and it still moves quite freely. I see only one friction washer, I 'm wondering if there supposed to be two?
Any thoughts? John
The leather one? Soak it in light oil and squeeze if out. Seems counterintuitive but works for me.
Re: new throttle quadrant question
Posted: Sun Oct 02, 2022 6:32 pm
by Johns
Thanks Graeme, will try that!!
John
Re: new throttle quadrant question
Posted: Sun Oct 02, 2022 9:09 pm
by builderflyer
Tired of the continuous throttle “creep” to idle which is common on the 3300 engine version of the Sonex, I added a second leather washer on the opposite side of the lever…that and a custom lever made with a larger surface area beneath the washers. Now it’s possible to “lock” the throttle to where it’s difficult to move without first backing off the friction lock. Works great for cruising.
Art,Sonex taildragger #95,Jabiru 3300 #261
Re: new throttle quadrant question
Posted: Mon Oct 03, 2022 1:29 pm
by Johns
Art, adding another washer is next on my list if the oil on washer trick doesn’t work.
Good to know it worked for you!
John
Re: new throttle quadrant question
Posted: Fri Oct 21, 2022 3:52 pm
by Johns
Hey everyone, the new aeroinjector works well. Takes throttle good all the way up to 3200 rpms. But when at idle and I shut the fuel supply off, the rpms increase till it runs out of fuel. Maybe an adjustment on the injector? But it runs so well as is.
John
Re: new throttle quadrant question
Posted: Fri Oct 21, 2022 6:53 pm
by GraemeSmith
Johns wrote:Hey everyone, the new aeroinjector works well. Takes throttle good all the way up to 3200 rpms. But when at idle and I shut the fuel supply off, the rpms increase till it runs out of fuel. Maybe an adjustment on the injector? But it runs so well as is.
John
It probably should. Mine does. I’ve always thought it’s like a float carb test on a naturally aspirated small engine. Shut off fuel at idle - there should be a 25-50rpm rise before the engine stops if the mixture is correctly setup.
Re: new throttle quadrant question
Posted: Fri Oct 21, 2022 7:22 pm
by XenosN42
Johns wrote:Hey everyone, the new aeroinjector works well. Takes throttle good all the way up to 3200 rpms. But when at idle and I shut the fuel supply off, the rpms increase till it runs out of fuel. Maybe an adjustment on the injector? But it runs so well as is.
John
My engine does the same.
Re: new throttle quadrant question
Posted: Sat Oct 22, 2022 10:49 am
by flyingbear
RPM SHOULD increase just before it shuts off. That is because it is running rich at idle and then as the fuel reduces to zero it is running out of fuel and going lean- giving a brief increase in RPM.
Fly on.
Re: new throttle quadrant question
by Johns » Sat Oct 22, 2022 4:44 pm
Thanks everyone, those are the responses I was looking for!
John