fuel flow transducer location

[cytoxin]

i will install it per plans.. the picture is somewhat misleading in that regard, but there is plenty of room for it per plans.(ok maybe not plenty but enough with an adel clamp) keep in mind that because it is anchored at the end to the solenoid there is little movement of the cable.
and i have a 100$ worth of adel clamps.

[n815vp]

William, My 9a is mounted in the same area with a bracket mounted on the firewall( and a doubler ). For the "u" tube i used stainless steel after someone asked about fire resistance of soft aluminum tubing.
happy building. n815vp

[alpinelakespilot2000]

Someone asked above, but I didn't see an answer... Will a regular rolo-flare tool handle stainless tubing OK?

[Mark Burns]

Originally Posted by alpinelakespilot2000

Someone asked above, but I didn't see an answer... Will a regular rolo-flare tool handle stainless tubing OK?

The Parker rolo flare is not "rated" for stainless. I remember reading that somewhere.

Mark

[Birkelbach]

Originally Posted by Mark Burns

The Parker rolo flare is not "rated" for stainless. I remember reading that somewhere.

Mark

True, the Parker documentation says "Copper and Aluminum Alloys Only." Having said that, I used mine on the 3/8" stainless line that I installed for my prop governor and it worked fine. Use lot's of oil and don't do it too often.

Phil

[tonyjohnson]

I see that those folks who have posted here seem to be using carbs and gascolators which is the setup that William is using. Does anyone have input as to the installation method and location of the fuel transducer in a fuel injected application?

My understanding is that the generally accepted best practice is to put the transducer beetween the injector servo and the fuel divider. Pics would be appreciated.

[ao.frog]

Hi.

I've put it beetween the engine driven fuelpump and the FI. That was the only place I could find which had 5 inches of straight line on each side of the FF sensor.

Since it's not supposed to be bolted directly to the engine, mine is "hanging" on the fuelline, thus having some flexibility.
I've installed an Adel clamp on the fuelline where the fuel line passing the induction tube from the forward left cyl.

I've also installed several heatshields.

I've installed firesleeve, covering the whole FF-sensor.
The location is slightly forward of where you can see the white label is sticking out from the firesleeve.

I'm alittle concerned about what the sharp corners of the FF-sensor will do to the firesleeve over time, but I guess only time will tell... and that's why we've Phase 1, right? :-)

I'm also alittle concerned about what the added weight (ff-sensor and firesleeve) will do to the the 90* bend. (the bend where the fuel line exits the fuel pump.)
Maybe that metalbend can break over time?
One sollution would be to replace the whole fuel line with a new fuel line which had straight fittings in each end.
Then the fuelpump end could be secured with an Adel clamp as well.

Comments appreciated folks!

[Davepar]

Your set up is almost identical to mine. Only difference is that I have a 7A and thus the engine mount supports are in a slightly different location. I was able to run the fuel line a little higher up.

I originally had the flow sensor mounted to the engine mount via some right angle aluminum and adel clamps. I was advised by a very knowledgeable builder that it was too secure. There wasn't enough flex in the fuel line between where it was attached to the engine and engine mount. Thus the sensor is only secured by the fuel line. The sensor is very light, so I'm not worried about it.

I similarly wrapped everything in fire sleeve and used heat shields on the exhaust. Looks like you've done the right thing so far.

I've had no troubles in nearly 100 hours.

I can't tell if that is lacing or tie wraps on the engine mount tube. Tie wraps I've heard can eventually eat through the powder coating.

Also, I used some thinned out RTV (I even found red) on the edges of the fire sleeve to keep that white material from soaking up oil.

Dave

[JonJay]

http://url=http://img247.imageshack....jpg][/url]Reads accuratley to the 1/10th of a gallon, or more than I can measure. 85 hours no issues. Keeps nice and cool in the plenum.

[Joker]

I'm concerned with the proximity of your solenoids and battery to the fuel. Call me chicken