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06-01-2015, 09:45 AM
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Join Date: May 2009
Location: Fort Mill, South Carolina
Posts: 345
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Red Cube?downstream
Thanks Tom. I was looking at putting it between the pump and servo, but I soon saw that those hoses are BIG?hence my question about SIZES and lengths. Putting it between the servo and spider looks like it eliminates any need for reducers/adapters, so that's what I'll do. I'll get back with you about hoses after I look at exact location, per your suggestion.
Do you have any pro/con advise about allowing the cube to float, vs. mounted on FW?
Thanks
__________________
Bruce Windom
QB RV-8 N148BW
First Flight: Oct '16
AeroSport Power IO-360 180hp w/dual P-Mags
Catto 3-blade, with black carbon spinner.
10" Dynon SkyviewTouch. That's ALL.
2020 Dues contributed
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12-07-2015, 08:50 PM
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Join Date: Dec 2011
Location: Meridian ID, Aspen CO, Okemos MI
Posts: 2,645
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Has this been decided?
I just spent the last hour reading about 50 posts - all with a different opinion on where and how to mount the Red Cube. What is confusing is the different locations for FI and carbs. I have a carb and there are more locations discussed for carb engines than FI
Im about ready to throw it away and just use a stick to know my fuel use!
__________________
rockwoodrv9a
Williamston MI
O-320 D2A
Awaiting DAR Inspection
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12-08-2015, 03:41 PM
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Join Date: Dec 2005
Location: Mahomet, Illinois
Posts: 2,195
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I was in the same quandary at that stage. Then I happened upon a builder's website (it may have been Randy Lervold's) that showed the Cube in a place that would work perfectly for me. I put it there - between two hoses in the line between the servo and spider - and it has worked great ever since.
I recommend you put it in a place you can access readily ... Red Cubes fail every now and then. My first one had defective threads and had to be replaced at 12hrs flying time.
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Terry Ruprecht
RV-9A Tip-up; IO-320 D2A
S. James cowl/plenum
(Dues paid thru Nov '18)
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12-08-2015, 09:22 PM
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Join Date: Dec 2011
Location: Meridian ID, Aspen CO, Okemos MI
Posts: 2,645
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Thanks Terry. I spoke with Tom and he said to mount it and then tell him what length hose I need and he will make them for me. I told him to quit milking his knee - near death experience and get back to work!
__________________
rockwoodrv9a
Williamston MI
O-320 D2A
Awaiting DAR Inspection
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12-09-2015, 07:45 AM
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Join Date: May 2009
Location: Fort Mill, South Carolina
Posts: 345
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Here's where I put my Red Cube on my -8.

Awaiting new hose from Tom to run between Cube and spider.
Warning: untested. Still building.
__________________
Bruce Windom
QB RV-8 N148BW
First Flight: Oct '16
AeroSport Power IO-360 180hp w/dual P-Mags
Catto 3-blade, with black carbon spinner.
10" Dynon SkyviewTouch. That's ALL.
2020 Dues contributed
Last edited by AAflyer : 12-09-2015 at 07:46 AM.
Reason: Added sentence
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12-09-2015, 12:19 PM
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Join Date: Feb 2008
Location: Austin, TX
Posts: 179
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Quote:
Originally Posted by AAflyer

Awaiting new hose from Tom to run between Cube and spider.
Warning: untested. Still building.
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Your chosen location is going to be the high point of the installation. Just what EI's installation guidelines say to avoid.
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12-09-2015, 07:23 PM
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Join Date: Mar 2010
Location: Middletown, RI
Posts: 36
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As the op I thought I would share where the cube ended up.
Tom made a short hose with a 45 on one end to go to the servo (rear outlet), keeping the cube as low as possible.

__________________
Jared Waite
RV9-A Flying
Superior IO-320
Catto 3 Blade
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12-09-2015, 09:48 PM
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Join Date: Dec 2011
Location: Meridian ID, Aspen CO, Okemos MI
Posts: 2,645
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Perfect!
Jared, Thanks for the picture. That is exactly what I am going to do. Im even going to paint it white as a tribute to you! Ha!
__________________
rockwoodrv9a
Williamston MI
O-320 D2A
Awaiting DAR Inspection
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12-10-2015, 06:50 AM
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Join Date: May 2009
Location: Fort Mill, South Carolina
Posts: 345
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Actually, it's still uphill to the spider from there, per my installation instructions. I Googled for more info, and it looks like there are "old" Red Cubes, and "New & Improved" Red Cubes. I found a 25+ page set of installation instructions on line that I think pertain to the older model. My Red Cube came with a 2 page install sheet, that says: "…the fuel line on the outlet port should not drop down after exiting the transducer."
Pretty sure I complied with that, but will double check…especially in a level flight attitude.
There was no mention of bubble-trapping loops in my installation, but I DID see references to that in what I think was the "old" manual.
Thanks for keeping me honest. Love the feedback on this site.
__________________
Bruce Windom
QB RV-8 N148BW
First Flight: Oct '16
AeroSport Power IO-360 180hp w/dual P-Mags
Catto 3-blade, with black carbon spinner.
10" Dynon SkyviewTouch. That's ALL.
2020 Dues contributed
Last edited by AAflyer : 12-10-2015 at 07:15 AM.
Reason: added explanation.
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