Matronics Email Lists

Because at starting RPM there is precious little flow thru the venturi so if you raise the slide you have next to nothing left in the way of air flow to reduce pressure. At higher operational speeds t ...

OK, a bit of background. I am a retired mechanic with eight ASE certs, started my career as a motorcycle snowmobile mechanic, have a top technician award from US Suzuki. Here is the basic carb sequenc ...

I should add that anyone using a psru with a clutch could probably use an enricher. For the remainder of us we have a prop load as soon as the engine starts which requires the higher slide position. S ...

First a description of how an en
richer works and then what I fear is a functional drawback when applied to our aircraft.
A true choke mechanically restricts air flow into the venturi. This method i ...

????? Considering all the work which was sometimes stressful, such as rigging the wings and tail as I built my Firefly, the gap seal was fairly straight forward and easy. why not just do it as the pla ...

Looks like 12 feet. I measured well over 11 feet but as I said my boom is shortened.

Can't promise, wrote myself a note, will try to remember to measure boom Sunday. Spars are eight feet. think boom is ten or twelve. Cut three of four inches off mind when building and it flies wonderf ...

Is the issue spars only?
Where are you located?
I have two unused Firefly spars, yours for the taking
I am in upstate NY

In general I would agree that only Kolb related discussions be allowed. However I believe the Covid virus is an exception for the following reason. I believe many of the small plane/ultralight manufac ...

I freely admit that I have little knowledge or skill when it comes to social media and computers. My question is, are our email address available thru the Matronics site? I had a very disturbing email ...

We recently had a STOL contest locally , had I known about it in time I would have attended. I do visit the local RC field. Stating national statistics is of limited value to us as individuals. I live ...

Short of heroic efforts such as extensive use of carbon fiber and titanium no Firestar with a 447 and full enclosure is ever going to meet part 103. Which brings me to a question I have long wondered ...

Short of heroic efforts such as extensive use of carbon fiber and titanium no Firestar with a 447 and full enclosure is ever going to meet part 103. Which brings me to a question I have long wondered ...

I am only guessing here but I suspect your vent location is in a low pressure area. You may want to do some additional research or contact Kolb. Surely would not want to vent tanks to a low pressure a ...

As a retired professional mechanic who started my career as a motorcycle snowmobile mechanic I can tell the quality of castings and external parts are a work of art. though this does not guarantee mec ...

Just received a new Polini Thor 250, prop and motor mount. Plan to install on my Firefly. Already have a mount design worked out but it never hurts to get additional input. Anyone here aware of a Kolb ...

I believe many boat owners found that out the hard way. For those who have flown certified GA airplanes it is not uncommon to find some water during the pre flight. My Cessna had vented caps, bottom o ...

It is true that most equipment is now ethanol tolerant. But one important difference between autos and airplanes it that auto systems are basically closed. You may notice a faint motor running sound a ...

Saw a 377 powered Firestar at the local airport with the same mod.My Firefly requires considerable forward stick for level flight though all other flight characteristics are wonderful. I did shorten t ...

Not really a bad deal, take the cost of a new 447 when they were in production and add in a B box. Polini has reduction built in. Single cylinder is OK as long as vibration is addressed, Polini has a ...