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Series Fuel Pumps

 
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Bob Etherton



Joined: 22 Oct 2013
Posts: 3

PostPosted: Wed Oct 23, 2013 11:16 am    Post subject: Series Fuel Pumps Reply with quote

I have read both ways that series pumps won't work because of excessive pressure and I have read where it works ok. How many members are running 503 Rotax with the series set up? Will it run with the vacuum pump pulling through the electric while the electric is off?

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rickofudall



Joined: 19 Sep 2009
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Location: Udall, KS, USA

PostPosted: Wed Oct 23, 2013 3:05 pm    Post subject: Series Fuel Pumps Reply with quote

Sorry, no 503 experience, but two 582's and an HKS all have Facet low pressure electric pumps pushing to Mikuni pumps on the 582's (D52's) and a Bing on the HKS. All work fine, neither Bing 54 or 64 carbs have ever so much as hick upped by being fed by serial pumps, and, yes, you can shut the Facet pumps off and the pneumatic pumps chug right along.

Rick Girard

On Wed, Oct 23, 2013 at 2:16 PM, Bob Etherton <ethertonr(at)webtv.net (ethertonr(at)webtv.net)> wrote:
Quote:
--> Kolb-List message posted by: "Bob Etherton" <ethertonr(at)webtv.net (ethertonr(at)webtv.net)>

I have read both ways that series pumps won't work because of excessive pressure and I have read where it works ok. How many members are running 503 Rotax with the series set up? Will it run with the vacuum pump pulling through the electric while the electric is off?

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Bob E




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PostPosted: Wed Oct 23, 2013 3:52 pm    Post subject: Series Fuel Pumps Reply with quote

Caution:

The Facet pumps sold by some (probably most) homebuilt suppliers will work as Rick describes. However, Facet does make a model that looks identical but will not pass fuel if it's not running. (Actually, there are quite a few variations in feature sets out there.)

Check part numbers carefully, if you're buying from a generic interweb seller.
http://www.facet-purolator.com/cube-fuel-pumps.php

Charlie


On 10/23/2013 6:05 PM, Richard Girard wrote:

[quote] Sorry, no 503 experience, but two 582's and an HKS all have Facet low pressure electric pumps pushing to Mikuni pumps on the 582's (D52's) and a Bing on the HKS. All work fine, neither Bing 54 or 64 carbs have ever so much as hick upped by being fed by serial pumps, and, yes, you can shut the Facet pumps off and the pneumatic pumps chug right along.

Rick Girard



On Wed, Oct 23, 2013 at 2:16 PM, Bob Etherton <ethertonr(at)webtv.net (ethertonr(at)webtv.net)> wrote:
Quote:
--> Kolb-List message posted by: "Bob Etherton" <ethertonr(at)webtv.net (ethertonr(at)webtv.net)>

I have read both ways that series pumps won't work because of excessive pressure and I have read where it works ok. How many members are running 503 Rotax with the series set up? Will it run with the vacuum pump pulling through the electric while the electric is off?

--------
Bob E




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=411251#411251







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arget="_blank">http://www.matronics.com/Navigator?Kolb-List
===========
http://forums.matronics.com
===========
le, List Admin.
="_blank">http://www.matronics.com/contribution
===========







--
Zulu Delta
Mk IIIC
Thanks, Homer GBYM


It isn't necessary to have relatives in Kansas City in order to be unhappy.
- Groucho Marx


[b]


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