RV-List Digest Archive

Tue 08/12/14


Total Messages Posted: 2



Today's Message Index:
----------------------
 
     1. 05:19 AM - Re: Johannsen tip tanks for the RV6A (Larry Bowen)
     2. 05:32 AM - Re: Johannsen tip tanks for the RV6A (Ralph E. Capen)
 
 
 


Message 1


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    Time: 05:19:24 AM PST US
    Subject: Re: Johannsen tip tanks for the RV6A
    From: Larry Bowen <larry@bowenaero.com>
    I have no experience with the tip tanks. But, maybe the capacity of your vent line is less than the expansion volume of your new fuel capacity. Add some more mileage to you vent system. 2 cents. -- Larry Bowen Larry@BowenAero.com http://BowenAero.com On Mon, Aug 11, 2014 at 9:51 AM, Ralph E. Capen <recapen@earthlink.net> wrote: > > Anyone (else) flying with a set of these? I have them installed and > plumbed in as gravity feed (with check-valves) to the main tanks. I know > that the HW guys recommend check-valve-pumps to keep the fuel out there and > pump it all in at once - I don't remember if they have gauges built in to > their tanks - which might be helpful if you only pump a partial > > Trying to determine what others have seen as the usable capacity and if > there have been any issues with feeding the tips to the mains causing them > to dump fuel out the main vents. I have my main vents cut a little > shallower than the vents built in to the tip-tanks. I have only used them > a couple of times - and only once did I take off with a full fuel load. On > a recent flight when I actually used them (full fuel load), I put more fuel > in during the refuel evolution than my fuel computer said that I flowed - > so I'm thinking I might have dumped some due to over-pressurization. How > are your main vents relative to the tip vents? > > I need to level the plane, block the outlets, and fill them up to see > anyway - but I thought I would try to get some feedback... > > Any experiences will be appreciated! > > Thanks, > Ralph Capen > >


    Message 2


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    Time: 05:32:26 AM PST US
    From: "Ralph E. Capen" <recapen@earthlink.net>
    Subject: Re: Johannsen tip tanks for the RV6A
    Interesting thought - thanks! -----Original Message----- From: Larry Bowen Sent: Aug 12, 2014 8:18 AM Subject: Re: RV-List: Johannsen tip tanks for the RV6A I have no experience with the tip tanks. But, maybe the capacity of your vent line is less than the expansion volume of your new fuel capacity. Add some more mileage to you vent system. 2 cents. -- Larry Bowen Larry@BowenAero.com http://BowenAero.com On Mon, Aug 11, 2014 at 9:51 AM, Ralph E. Capen <recapen@earthlink.net> wrote: Anyone (else) flying with a set of these? I have them installed and plumbed in as gravity feed (with check-valves) to the main tanks. I know that the HW guys recommend check-valve-pumps to keep the fuel out there and pump it all in at once - I don't remember if they have gauges built in to their tanks - which might be helpful if you only pump a partial Trying to determine what others have seen as the usable capacity and if there have been any issues with feeding the tips to the mains causing them to dump fuel out the main vents. I have my main vents cut a little shallower than the vents built in to the tip-tanks. I have only used them a couple of times - and only once did I take off with a full fuel load. On a recent flight when I actually used them (full fuel load), I put more fuel in during the refuel evolution than my fuel computer said that I flowed - so I'm thinking I might have dumped some due to over-pressurization. How are your main vents relative to the tip vents? I need to level the plane, block the outlets, and fill them up to see anyway - but I thought I would try to get some feedback... Any experiences will be appreciated! Thanks, Ralph Capen ========== target="_blank">http://www.matronics.com/Navigator?RV-List ========== MS - k">http://forums.matronics.com ========== e - -Matt Dralle, List Admin. t="_blank">http://www.matronics.com/contribution ==========




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