Rocket-List Digest Archive

Thu 05/15/03


Total Messages Posted: 17



Today's Message Index:
----------------------
 
     1. 05:21 AM - Re: Tip Tanks (Seibert Bob-r18643)
     2. 05:39 AM - Re: Re: Tip Tanks (Cy Galley)
     3. 07:28 AM - Re: Re: Tip Tanks (Konrad Werner)
     4. 08:07 AM - Re: Re: Tip Tanks (Bob & Toodie Marshall)
     5. 08:21 AM - Tail Wheel (Ernest Hale)
     6. 08:31 AM - Re: Tail Wheel (Tom Martin)
     7. 08:59 AM - Re: looking for HR spinner and bulkhead (Frazier, Vincent A)
     8. 09:56 AM - Three point landings (Christopher Norris)
     9. 12:29 PM - Re: Three point landings (Lee Taylor)
    10. 12:45 PM - Re: Three point landings (David Magaw)
    11. 01:08 PM - Three point landings - another free opinion (Mlfred@aol.com)
    12. 01:26 PM - Re: Three point landings (Tom Martin)
    13. 02:17 PM - Re: Tail Wheel (Christopher Norris)
    14. 03:33 PM - Re: Three point landings - another free opinion (Boyd C. Braem)
    15. 07:06 PM - Re: Re: Tip Tanks (N223RV@aol.com)
    16. 07:11 PM - Re: RV-List: Eyeball Swivel Vent (N223RV@aol.com)
    17. 09:38 PM - Re: Re: RV-List: Eyeball Swivel Vent (Bob Japundza)
 
 
 


Message 1


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    Time: 05:21:01 AM PST US
    From: Seibert Bob-r18643 <Bob.Seibert@motorola.com>
    Subject: RE: Tip Tanks
    --> Rocket-List message posted by: Seibert Bob-r18643 <Bob.Seibert@motorola.com> Phil, The advice on plumbing the tip tanks together "the tips are teed together which gives you, left, right, tips and off." is best not done that way. This will, in effect, give you a "both" position when you feed from the tip tanks. The problem is that you will get crossfeed, possible dumping overboard on the low wing and probably start sucking air from one tip tank before the other is empty. Ever notice that only airplanes without fuel pumps have a "both" position for the fuel selector? Bob Seibert


    Message 2


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    Time: 05:39:17 AM PST US
    From: "Cy Galley" <cgalley@qcbc.org>
    Subject: Re: RE: Tip Tanks
    --> Rocket-List message posted by: "Cy Galley" <cgalley@qcbc.org> That is because when you use a pump you are sucking from the tank. If you suck from TWO tanks and one is empty, you will suck air and not gas because the air sucks easier than the gas even if the other tank is full. Remember that tanks don't empty at the same rate. One will empty before the other leaving you sucking air. Cy Galley - Bellanca Champion Club Newsletter Editor & EAA TC www.bellanca-championclub.com Actively supporting Aeroncas ----- Original Message ----- From: "Seibert Bob-r18643" <Bob.Seibert@motorola.com> Subject: Rocket-List: RE: Tip Tanks > --> Rocket-List message posted by: Seibert Bob-r18643 <Bob.Seibert@motorola.com> > > Phil, > The advice on plumbing the tip tanks together "the tips are teed together which gives > you, left, right, tips and off." is best not done that way. > This will, in effect, give you a "both" position when you feed from the tip tanks. > The problem is that you will get crossfeed, possible dumping overboard on the low wing and probably start sucking air from one tip tank before the other is empty. > Ever notice that only airplanes without fuel pumps have a "both" position for the fuel selector? > Bob Seibert > >


    Message 3


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    Time: 07:28:12 AM PST US
    From: "Konrad Werner" <Connywerner@wans.net>
    Subject: Re: RE: Tip Tanks
    --> Rocket-List message posted by: "Konrad Werner" <Connywerner@wans.net> OR, Put the recommended check valves on either side of the "T", so Fuel can only feed into the "T", but not drain back to the tanks. Select the Tips for Cruise ONLY, use fullest Main Tank for Take Off & Landings. If you manage to keep the Ball centered in flight, you should not have a "low" wing. Konrad > --> Rocket-List message posted by: Seibert Bob-r18643 <Bob.Seibert@motorola.com> > Phil, > The advice on plumbing the tip tanks together "the tips are teed together which gives > you, left, right, tips and off." is best not done that way. > This will, in effect, give you a "both" position when you feed from the tip tanks. > The problem is that you will get crossfeed, possible dumping overboard on the low wing and probably start sucking air from one tip tank before the other is empty. > Ever notice that only airplanes without fuel pumps have a "both" position for the fuel selector? > Bob Seibert


    Message 4


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    Time: 08:07:08 AM PST US
    From: "Bob & Toodie Marshall" <rtmarshall@osbtown.com>
    Subject: Re: RE: Tip Tanks
    --> Rocket-List message posted by: "Bob & Toodie Marshall" <rtmarshall@osbtown.com> Hello all, I am amazed that as intelligent people we who build and repair A/C do not quite read all the information presented, if one wishs you can tee both Tip tanks together, it does work,I know as I have used that on an RV 4, using the kiss priniciple and your stop watch and yes you do have a little more fuel in one or the other, and you will stop flying with one wing low Too! If one continues to read the post it also says you can individualy valve the tanks or if one wishs you can $$$ buy the expensive 5 position Valve. Fuel systems should be as simple as possible.Just because these things are faster than bonanzas they do not have to be as complicated .! And on that vein will you Cy be running the broken bird repair facility at OSH this year as in the past? Please do not archive --- Original Message ----- From: "Cy Galley" <cgalley@qcbc.org> Subject: Re: Rocket-List: RE: Tip Tanks > --> Rocket-List message posted by: "Cy Galley" <cgalley@qcbc.org> > > That is because when you use a pump you are sucking from the tank. If you > suck from TWO tanks and one is empty, you will suck air and not gas because > the air sucks easier than the gas even if the other tank is full. Remember > that tanks don't empty at the same rate. One will empty before the other > leaving you sucking air. > > Cy Galley - Bellanca Champion Club > Newsletter Editor & EAA TC > www.bellanca-championclub.com > Actively supporting Aeroncas > > > ----- Original Message ----- > From: "Seibert Bob-r18643" <Bob.Seibert@motorola.com> > To: <rocket-list@matronics.com> > Subject: Rocket-List: RE: Tip Tanks > > > > --> Rocket-List message posted by: Seibert Bob-r18643 > <Bob.Seibert@motorola.com> > > > > Phil, > > The advice on plumbing the tip tanks together "the tips are teed together > which gives > > you, left, right, tips and off." is best not done that way. > > This will, in effect, give you a "both" position when you feed from the > tip tanks. > > The problem is that you will get crossfeed, possible dumping overboard on > the low wing and probably start sucking air from one tip tank before the > other is empty. > > Ever notice that only airplanes without fuel pumps have a "both" position > for the fuel selector? > > Bob Seibert > > > > > >


    Message 5


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    Time: 08:21:18 AM PST US
    From: "Ernest Hale" <ehale@cheyenne-enviro.com>
    Subject: Tail Wheel
    --> Rocket-List message posted by: "Ernest Hale" <ehale@cheyenne-enviro.com> I have found that I have a bit of a problem with my tail wheel unlocking on me when I land thus causing some tense moments in a x wind. Does anyone know of a locking tail wheel that could be used on take off and landing or of a tail wheel that won't unlock on you when you have to get fancy on the rudder pedals to keep it heading down the runway. Thanks, Ernest Hale Harmon Rocket N540HB


    Message 6


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    Time: 08:31:22 AM PST US
    From: "Tom Martin" <fairlea@execulink.com>
    Subject: Tail Wheel
    --> Rocket-List message posted by: "Tom Martin" <fairlea@execulink.com> Ernest I am not sure which tail wheel you have but if it is the Vans' then there are some things you can do to help this. Often with use the little pin that slides in and out gets a burr on it, or the hole that it goes into does. Clean these things up with a small file and lubricate the assembly. This is a part that needs to be taken apart and cleaned on a semi annual basis depending on how much you fly. It could be that the grove in the upper steering arm is getting worn. It can be replaced or you could purchase a Terry Jantzi steering link which comes with a new steering arm. Tom Martin -----Original Message----- From: owner-rocket-list-server@matronics.com [mailto:owner-rocket-list-server@matronics.com]On Behalf Of Ernest Hale Subject: Rocket-List: Tail Wheel --> Rocket-List message posted by: "Ernest Hale" <ehale@cheyenne-enviro.com> I have found that I have a bit of a problem with my tail wheel unlocking on me when I land thus causing some tense moments in a x wind. Does anyone know of a locking tail wheel that could be used on take off and landing or of a tail wheel that won't unlock on you when you have to get fancy on the rudder pedals to keep it heading down the runway. Thanks, Ernest Hale Harmon Rocket N540HB


    Message 7


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    Time: 08:59:38 AM PST US
    Subject: RE: looking for HR spinner and bulkhead
    From: "Frazier, Vincent A" <VFrazier@usi.edu>
    --> Rocket-List message posted by: "Frazier, Vincent A" <VFrazier@usi.edu> You can post a note to the rocket list rocket-list-digest@matronics.com or get a carbon fiber one from Mark Frederick for around $450. I've got one of those and they appear to be fine. -----Original Message----- From: Rideandflyhigh@aol.com [mailto:Rideandflyhigh@aol.com] Subject: looking for HR spinner and bulkhead Hi Vince, i am building a Harmon R. here in Montana and looking for a Spinner and Bulkhead for my IO 540 c4b5 . is there a way to find a used spinner ( maybe from people who went to a MT prop and spinner) or where i can post a add that i am looking for one? Or maybe you know someone? Thanks for your help Peter Vogt 406-5820263 or Rideandflyhigh@aol.com


    Message 8


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    Time: 09:56:23 AM PST US
    From: Christopher Norris <chrissnorris@yahoo.com>
    Subject: Three point landings
    --> Rocket-List message posted by: Christopher Norris <chrissnorris@yahoo.com> Does anyone have some advice on the technique for eliminating the bounce on three point landings? I've been flying power-off landings, but always seem to end up with the nose coming back up on me. Is a little power the solution? In the citabria, I can dial landings all day long, so looking for the magic I don't have yet! thanks, chris __________________________________ http://search.yahoo.com


    Message 9


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    Time: 12:29:36 PM PST US
    From: "Lee Taylor" <leetay@idcomm.com>
    Subject: Three point landings
    --> Rocket-List message posted by: "Lee Taylor" <leetay@idcomm.com> -----Original Message----- From: owner-rocket-list-server@matronics.com [mailto:owner-rocket-list-server@matronics.com] On Behalf Of Christopher Norris Subject: Rocket-List: Three point landings --> Rocket-List message posted by: Christopher Norris <chrissnorris@yahoo.com> Does anyone have some advice on the technique for eliminating the bounce on three point landings? I've been flying power-off landings, but always seem to end up with the nose coming back up on me. Is a little power the solution? In the citabria, I can dial landings all day long, so looking for the magic I don't have yet! thanks, chris Hi, Chris, Three-point landings should always follow one simple rule. The airplane wing should stall at the exact same instant, OR VERY SLIGHTLY BEFORE, the wheels touch the ground. If you don't have the stick all the way back to achieve the angle that the wing will stall, you will touch down prematurely, and with the extreme low wing of the Rocket, the strong ground effect will probably cause a slight balloon away from the touchdown, at which point the wing will stall, (further away from ground effect), and Plop! You mentioned "always having the nose coming up"---that tells me you aren't getting fully flared before touchdown. Try three things. First, get the stick a little further back just before touchdown. Don't let it "skid" onto the ground before the stall occurs. The Citabria has a high wing, so the ground effect isn't as strong, plus that plane quits flying pretty softly. Rarely fully stalls on the touchdown, and little real ground effect. By getting the stick further back just immediately before/at touchdown, you give the wing a better chance to quit flying at the right time. Second, are you using enough nose-up trim on final? If you are holding the plane in the glide manually, rather than via trim, (very easy to do in a Rocket, since they are so delightfully sensitive), you will probably not be giving enough back-stick against that force at touchdown flare. In my Cessna 180, (one of the most challenging planes to PROPERLY land, I LOVE it!), without full up-trim, getting that last inch of NECESSARY back pressure the split-second before touchdown is rather difficult. Third, the BEST three-point landing is one with a slight "Plop" from about three inches, rather than the greased-on landing. Especially in a very low-wing plane like the Rocket, if the plane isn't fully stalled at/before the touchdown, there is a strong possibility that it will "bounce off" of the ground effect, and then the landing probably isn't just a "slight plop". What I teach my taildragger students is that the actual touchdown SHOULD BE A SLIGHT DISAPOINTMENT! The idea is to "keep the plane at 2 inches off the runway", until "Shucks, it just plain won't fly anymore, darn." (GRIN!) The properly-done three-point is just about the prettiest maneuver in flying. Keep at it until you are GOOD, and you can curl your lip a little arrogantly towards anyone who drives their plane into the ground in a wheel landing. There is a difference between airplane drivers and pilots. Lee Taylor __________________________________ http://search.yahoo.com


    Message 10


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    Time: 12:45:45 PM PST US
    From: "David Magaw" <dmagaw@att.net>
    Subject: Re: Three point landings
    --> Rocket-List message posted by: "David Magaw" <dmagaw@att.net> And if you really do it right, the tailwheel will grease the landing first before the main wheels plop. Dave ----- Original Message ----- From: "Lee Taylor" <leetay@idcomm.com> Subject: RE: Rocket-List: Three point landings > --> Rocket-List message posted by: "Lee Taylor" <leetay@idcomm.com> > > > -----Original Message----- > From: owner-rocket-list-server@matronics.com > [mailto:owner-rocket-list-server@matronics.com] On Behalf Of Christopher > Norris > To: rocket-list@matronics.com > Subject: Rocket-List: Three point landings > > --> Rocket-List message posted by: Christopher Norris > <chrissnorris@yahoo.com> > > Does anyone have some advice on the technique for > eliminating the bounce on three point landings? I've > been flying power-off landings, but always seem to > end up with the nose coming back up on me. Is a > little power the solution? In the citabria, I can > dial landings all day long, so looking for the magic I > don't have yet! > > thanks, > chris > > Hi, Chris, > > Three-point landings should always follow one simple rule. The > airplane wing should stall at the exact same instant, OR VERY SLIGHTLY > BEFORE, the wheels touch the ground. If you don't have the stick all > the way back to achieve the angle that the wing will stall, you will > touch down prematurely, and with the extreme low wing of the Rocket, the > strong ground effect will probably cause a slight balloon away from the > touchdown, at which point the wing will stall, (further away from ground > effect), and Plop! You mentioned "always having the nose coming > up"---that tells me you aren't getting fully flared before touchdown. > Try three things. First, get the stick a little further back > just before touchdown. Don't let it "skid" onto the ground before the > stall occurs. The Citabria has a high wing, so the ground effect isn't > as strong, plus that plane quits flying pretty softly. Rarely fully > stalls on the touchdown, and little real ground effect. By getting the > stick further back just immediately before/at touchdown, you give the > wing a better chance to quit flying at the right time. > Second, are you using enough nose-up trim on final? If you are > holding the plane in the glide manually, rather than via trim, (very > easy to do in a Rocket, since they are so delightfully sensitive), you > will probably not be giving enough back-stick against that force at > touchdown flare. In my Cessna 180, (one of the most challenging planes > to PROPERLY land, I LOVE it!), without full up-trim, getting that last > inch of NECESSARY back pressure the split-second before touchdown is > rather difficult. > Third, the BEST three-point landing is one with a slight "Plop" > from about three inches, rather than the greased-on landing. Especially > in a very low-wing plane like the Rocket, if the plane isn't fully > stalled at/before the touchdown, there is a strong possibility that it > will "bounce off" of the ground effect, and then the landing probably > isn't just a "slight plop". > What I teach my taildragger students is that the actual > touchdown SHOULD BE A SLIGHT DISAPOINTMENT! The idea is to "keep the > plane at 2 inches off the runway", until "Shucks, it just plain won't > fly anymore, darn." (GRIN!) > > The properly-done three-point is just about the prettiest > maneuver in flying. Keep at it until you are GOOD, and you can curl > your lip a little arrogantly towards anyone who drives their plane into > the ground in a wheel landing. There is a difference between airplane > drivers and pilots. > > Lee Taylor > __________________________________ > http://search.yahoo.com > >


    Message 11


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    Time: 01:08:48 PM PST US
    From: Mlfred@aol.com
    Subject: Three point landings - another free opinion
    --> Rocket-List message posted by: Mlfred@aol.com In a message dated 5/15/2003 2:46:23 PM Central Daylight Time, dmagaw@att.net writes: > And if you really do it right, the tailwheel will grease the landing first > before the main wheels plop. > Agreed, and you might want to try carrying a bit of power to get a bit more elevator effectiveness. Then, you'll find the extra power a liability with a pax in the back... Don't try genuine 'full stall' landings -- the wing stalls at ~20deg (re: Terry Jantzi's testing), and the ship sets at ~12 deg. We're talking a substantial PLOP if done this way. Sounds like a practice issue -- keep practicing! You are likely not quite aware of the 1' AGL visual cue yet, but it will come. Might try a few landings from the BACK seat of the Citrabia? This might get your peripheral vision working a bit better too. Cheers Mark


    Message 12


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    Time: 01:26:39 PM PST US
    From: "Tom Martin" <fairlea@execulink.com>
    Subject: Three point landings
    --> Rocket-List message posted by: "Tom Martin" <fairlea@execulink.com> Three point landings Good topic, with 500 hours I still do not have the absolute answers to that question. What I can tell you is that this plane has negligible ground effect and the sink rate at the lower, almost stall speeds are, how do I phrase this, impressive? Yes it is important that you have the stick all the way back at the right time but the key is the flare, too early and you will bounce, too late on the flare and, well, you will bounce even more. I make better three point landings with a passenger. I am not ashamed of wheel landings, I like them in this airplane and they can be very pretty and a LOT easier on the gear than a blotched three point. But sometimes you need to land in a shorter distance than a wheel landing permits so three pointers are a necessary. If for no other reason, then three pointers will bring a rocket guy down to earth, (pun intended), and humble him a little. I am going to continue practising for as long as I own one of these things. Tom Martin


    Message 13


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    Time: 02:17:02 PM PST US
    From: Christopher Norris <chrissnorris@yahoo.com>
    Subject: RE: Tail Wheel
    --> Rocket-List message posted by: Christopher Norris <chrissnorris@yahoo.com> Ernest, I had this problem with my rocket. The aluminum steering arm began to wear and the pin pops out during brisk movement of the rudder pedals. I replaced it with a steel version. I think it was from Vans. Very cheap replacement item compared to going off the runway ... Dave Hallmark at Massey Aircraft in Bakersfield can help you. - Chris > > --> Rocket-List message posted by: "Ernest Hale" <ehale@cheyenne-enviro.com> > > I have found that I have a bit of a problem with my tail wheel unlocking > on me when I land thus causing some tense moments in a x wind. Does > anyone know of a locking tail wheel that could be used on take off and > landing or of a tail wheel that won't unlock on you when you have to get > fancy on the rudder pedals to keep it heading down the runway. > > Thanks, > > Ernest Hale > Harmon Rocket N540HB > __________________________________ http://search.yahoo.com


    Message 14


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    Time: 03:33:23 PM PST US
    From: "Boyd C. Braem" <bcbraem@comcast.net>
    Subject: Re: Three point landings - another free opinion
    --> Rocket-List message posted by: "Boyd C. Braem" <bcbraem@comcast.net> Mlfred-- You really have to think of your career. How many people on this list know that you sorta hepped a little with the Exxon Tiger??? You Texas boys keep it close to home. But, anyway, I have to disagree with that tailwheel comment--while, theoretically, you can drag the tailwheel down the runway, (and it makes a nice picture for your friends) the bearings in Van's standard tailwheel really don't like that. Van's standard bearings are what you would find in some cart to move wharehouse furniture around. And, besides, that's why they call those two other wheels the "main landing gear". Love, Boyd. Mlfred@aol.com wrote: >--> Rocket-List message posted by: Mlfred@aol.com > >In a message dated 5/15/2003 2:46:23 PM Central Daylight Time, dmagaw@att.net >writes: > > > > >>And if you really do it right, the tailwheel will grease the landing first before the main wheels plop. >> >> >> > >Agreed, and you might want to try carrying a bit of power to get a bit more >elevator effectiveness. Then, you'll find the extra power a liability with a >pax in the back... > >Don't try genuine 'full stall' landings -- the wing stalls at ~20deg (re: >Terry Jantzi's testing), and the ship sets at ~12 deg. We're talking a >substantial PLOP if done this way. > >Sounds like a practice issue -- keep practicing! You are likely not quite >aware of the 1' AGL visual cue yet, but it will come. Might try a few >landings from the BACK seat of the Citrabia? This might get your peripheral >vision working a bit better too. > >Cheers >Mark > > > >


    Message 15


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    Time: 07:06:32 PM PST US
    From: N223RV@aol.com
    Subject: Re: RE: Tip Tanks
    --> Rocket-List message posted by: N223RV@aol.com Yes, but let us not forget the FAR's state every fuel tank must have a vent, sump, and an indicator gauge. I'd hate to have those extra tanks plumbed into a nice $250 Anadair fuel valve and run out of fuel on a tip tank with no gauge or sump. The insurance company would not loose any money that way, only you would.... That is why everyone is plumbing them into the main tanks.... this way the FAR's state only the main tank cannot overflow due to fuel from another tank. I'd like to hear everyone's comments on this at I just installed the Hotel Whiskey Aviation wing tanks on my RV-4 and struggled to come up with something better than they had for the plumbing.... I ended up improving on their design by adding check valves between the 2 tanks to prevent fuel from feeding back into the tip tanks from either leaving the tip tank valves open during aerobatics or when on the ground with full main tanks and empty tip tanks...... I really was ready to buy the 5 way valve so I could pull fuel from each tank as I choose, but with no indicator and no sump I just didn't think it to be a wise choice. Comments? -Mike Kraus N223RV RV-4 60 some hours and dreading the painting process....


    Message 16


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    Time: 07:11:02 PM PST US
    From: N223RV@aol.com
    Subject: Re: RV-List: Eyeball Swivel Vent
    --> Rocket-List message posted by: N223RV@aol.com Some Rocket guy had some very large all Aluminum ones for sale at SNF this year. I met him at the beer tent but don't recall his name. He was asking somewhere around $135 each for them but they were very nice.... Vents seem overpriced to me, but compared to others they were well worth it. Maybe someone on the rocket list knows who this was and has contact information? If so, please cross post on the RV-List. Thanks -Mike Kraus N223RV


    Message 17


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    Time: 09:38:25 PM PST US
    From: Bob Japundza <bjapundza@yahoo.com>
    Subject: Re: RV-List: Eyeball Swivel Vent
    --> Rocket-List message posted by: Bob Japundza <bjapundza@yahoo.com> Hi Mike, Contact Jeff Mears 317-745-0656, or 317-745-7551 (he was the guy at snf you're referring to.) His vents are a direct replacement for those crappy black plastic vents Vans sells. They are well worth the $$ for $135. The "mouth" of the vent (or whatever you want to call it) is about 20% larger. Regards, Bob N223RV@aol.com wrote: --> Rocket-List message posted by: N223RV@aol.com Some Rocket guy had some very large all Aluminum ones for sale at SNF this year. I met him at the beer tent but don't recall his name. He was asking somewhere around $135 each for them but they were very nice.... Vents seem overpriced to me, but compared to others they were well worth it. Maybe someone on the rocket list knows who this was and has contact information? If so, please cross post on the RV-List. Thanks -Mike Kraus N223RV ---------------------------------




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