---------------------------------------------------------- Pietenpol-List Digest Archive --- Total Messages Posted Tue 03/01/05: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:28 AM - Throttle quadrant plans (Oscar Zuniga) 2. 10:08 AM - Re: Throttle quadrant plans (BARNSTMR@aol.com) 3. 01:10 PM - Re: fuel pressure (Wizzard187@aol.com) 4. 01:40 PM - Re: fuel pressure (Phillips, Jack) 5. 01:50 PM - Re: fuel pressure (walt evans) 6. 04:05 PM - Firewall (TBYH@aol.com) 7. 05:19 PM - Re: fuel pressure (cgalley) 8. 05:38 PM - Lost Foam Gas Tank (Pilots4ETW@wmconnect.com) 9. 06:09 PM - Re: Firewall (cgalley) 10. 06:21 PM - Re: Firewall (Dale Johnson) ________________________________ Message 1 _____________________________________ Time: 06:28:12 AM PST US From: "Oscar Zuniga" Subject: Pietenpol-List: Throttle quadrant plans --> Pietenpol-List message posted by: "Oscar Zuniga" I obviously didn't make the quadrant that's on 41CC (Corky did), but I've made others. I found that if I played around at the workbench with some junk materials like plywood and scrap metal to make a mock-up, it's easier and more satisfying to work out the stroke, travel, and proportions of the lever than if you sat down and worked out the trigonometry or drew it up in CAD. If you don't like the throw or travel, you just punch a new pivot point and try that, or cut out a longer handle and try that. Grab whatever is handy and start experimenting. I have a box of miscellaneous hardware that I've picked up from jobsites and parking lots over many years, and I'm sure all of you do too- so I work out of that and my scrap bin to do test fits of things, then fabricate the final item using "real" stuff. We don't need no stinkin' plans (and I'm an engineer!!) Oscar Zuniga San Antonio, TX mailto: taildrags@hotmail.com website at http://www.flysquirrel.net ________________________________ Message 2 _____________________________________ Time: 10:08:19 AM PST US From: BARNSTMR@aol.com Subject: Re: Pietenpol-List: Throttle quadrant plans --> Pietenpol-List message posted by: BARNSTMR@aol.com Max Hey man. I must apologize for not getting back to you about the throttle plans. I have been covered up at work and home projects and barely get time to check my email lately. excuses...excuses... Lon built the throttle pictured for our pietenpol. It is straight from the Hatz plans. I will try to scan it soon if I can get his plans from him. There are some phenolic washers used for a friction adjustment. Anyway... keep after me and I will get it for you. Terry -- Terry L. Bowden ph 254-715-4773 fax 254-853-3805 ________________________________ Message 3 _____________________________________ Time: 01:10:08 PM PST US From: Wizzard187@aol.com Subject: Re: Pietenpol-List:fuel pressure Pieters: I have a J3 cub gas tank in the front of my piet with a 75 hp cont engine and have been running the engine but it craps out when I add throttle. The books say you should have 1/2 lbs of pressure (19 inches) of head. I can't see how a j3 cub has ever had this much. With just two gal of gas I have about 6 inches when sitting with the tail wheel down and my motor cycle wheels on. I am going to put a 90 degree tube in my gas cap to get some prop blast and wonder if this will do any good. I have had three different carbs on and they all act the same. Still looking for a counter clockwise tach. Has anyone used one of the new electronic tach on a mag that they really like. Ken Conrad, Long Grove Iowa ________________________________ Message 4 _____________________________________ Time: 01:40:38 PM PST US Subject: RE: Pietenpol-List:fuel pressure From: "Phillips, Jack" Hi Ken, The J-3 had the tank sitting a little higher than a Piet does, in relation to the carburetor. Still, you should be all right. Have you measured the fuel flow by taking the fuel line off at the carburetor and time running the fuel into a bucket? I don't know what an A75 burns, probably a little over 4 gals per hour. You need at least 150% of that available, so you should be getting at least 6 gals per hour, or a gallon every ten minutes through your fuel system. Before going to the trouble of putting the 90 degree tube on your fuel cap, just try it with the fuel cap off - that will tell you if you have a venting problem. If it craps out immediately when you add throttle, it is not a fuel flow problem because the float chamber (if full) will provide enough fuel for at least 5 - 10 seconds of full throttle operation. Might be a mixture problem. Do you know for sure you have the correct jet in the carburetor? Do you know if the float level is set crrectly? This critical (assuming you have a Stromberg). Jack Phillips, PE Sr. Manager, Disposables Product Development Clinical Technologies and Services Cardinal Health Creedmoor, NC (919) 528-5212 -----Original Message----- From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Wizzard187@aol.com Subject: Re: Pietenpol-List:fuel pressure Pieters: I have a J3 cub gas tank in the front of my piet with a 75 hp cont engine and have been running the engine but it craps out when I add throttle. The books say you should have 1/2 lbs of pressure (19 inches) of head. I can't see how a j3 cub has ever had this much. With just two gal of gas I have about 6 inches when sitting with the tail wheel down and my motor cycle wheels on. I am going to put a 90 degree tube in my gas cap to get some prop blast and wonder if this will do any good. I have had three different carbs on and they all act the same. Still looking for a counter clockwise tach. Has anyone used one of the new electronic tach on a mag that they really like. Ken Conrad, Long Grove Iowa ________________________________ Message 5 _____________________________________ Time: 01:50:34 PM PST US From: "walt evans" Subject: Re: Pietenpol-List:fuel pressure Ken, Sound like the problem I had when first setting up the idle mixture screw on my Stromberg (assuming that's what you have.) Since the carb doesn't have an accelerator pump . (65 year old equiptment) Had to keep messing with the screw till I got way to the rich end of idling good. Even now it may stumble if the throttle is pushed forward too fast. walt evans NX140DL ----- Original Message ----- From: Wizzard187@aol.com To: pietenpol-list@matronics.com Sent: Tuesday, March 01, 2005 4:09 PM Subject: Re: Pietenpol-List:fuel pressure Pieters: I have a J3 cub gas tank in the front of my piet with a 75 hp cont engine and have been running the engine but it craps out when I add throttle. The books say you should have 1/2 lbs of pressure (19 inches) of head. I can't see how a j3 cub has ever had this much. With just two gal of gas I have about 6 inches when sitting with the tail wheel down and my motor cycle wheels on. I am going to put a 90 degree tube in my gas cap to get some prop blast and wonder if this will do any good. I have had three different carbs on and they all act the same. Still looking for a counter clockwise tach. Has anyone used one of the new electronic tach on a mag that they really like. Ken Conrad, Long Grove Iowa ________________________________ Message 6 _____________________________________ Time: 04:05:55 PM PST US From: TBYH@aol.com Subject: Pietenpol-List: Firewall My Piet's basic fuselage structure is finished and I'm writing to ask about the firewall. What do most Pieters cover their firewall with, i.e. I assume steel or aluminum? Do you put some of that fireproof fabric in between the metal and the plywood firewall bulkhead? I'm building a Model A powered Piet so mine also has the "shelf" area behind the engine...would appreciate any advice. Many thanks! Fred B. ________________________________ Message 7 _____________________________________ Time: 05:19:46 PM PST US From: "cgalley" Subject: Re: Pietenpol-List:fuel pressure Does it change when you raise the tail? Cy Galley - Chair, AirVenture Emergency Aircraft Repair A Service Project of Chapter 75 EAA Safety Programs Editor - TC EAA Sport Pilot ----- Original Message ----- From: Wizzard187@aol.com To: pietenpol-list@matronics.com Sent: Tuesday, March 01, 2005 3:09 PM Subject: Re: Pietenpol-List:fuel pressure Pieters: I have a J3 cub gas tank in the front of my piet with a 75 hp cont engine and have been running the engine but it craps out when I add throttle. The books say you should have 1/2 lbs of pressure (19 inches) of head. I can't see how a j3 cub has ever had this much. With just two gal of gas I have about 6 inches when sitting with the tail wheel down and my motor cycle wheels on. I am going to put a 90 degree tube in my gas cap to get some prop blast and wonder if this will do any good. I have had three different carbs on and they all act the same. Still looking for a counter clockwise tach. Has anyone used one of the new electronic tach on a mag that they really like. Ken Conrad, Long Grove Iowa ________________________________ Message 8 _____________________________________ Time: 05:38:15 PM PST US From: Pilots4ETW@wmconnect.com Subject: Pietenpol-List: Lost Foam Gas Tank I'm going to build a gas tank for my center section using the lost foam method. I'm savvy with fiberglass and epoxy but need some info about how to join the foam parts. Is there a glue for joining the foam walls? And is it eaten away when the foam is lost? Thanks, Roy ________________________________ Message 9 _____________________________________ Time: 06:09:32 PM PST US From: "cgalley" Subject: Re: Pietenpol-List: Firewall Stainless or galvanized steel works well. Aluminum is a no,no! Putting fibra-flax between the steel and the wood is also recommended. You used to be able to use asbestos to prevent the heat transfer from the steel to the wood but that is not PC anymore. Cy Galley - Chair, AirVenture Emergency Aircraft Repair A Service Project of Chapter 75 EAA Safety Programs Editor - TC EAA Sport Pilot ----- Original Message ----- From: TBYH@aol.com To: pietenpol-list@matronics.com Sent: Tuesday, March 01, 2005 6:05 PM Subject: Pietenpol-List: Firewall My Piet's basic fuselage structure is finished and I'm writing to ask about the firewall. What do most Pieters cover their firewall with, i.e. I assume steel or aluminum? Do you put some of that fireproof fabric in between the metal and the plywood firewall bulkhead? I'm building a Model A powered Piet so mine also has the "shelf" area behind the engine...would appreciate any advice. Many thanks! Fred B. ________________________________ Message 10 ____________________________________ Time: 06:21:09 PM PST US s=test1; d=earthlink.net; b=lwaJ4s5tp6ZxbtlCCFqXT8KJsSLifzfKyNhmFe0nJdP0ic7D5icTSPjfgCjmpJFx; From: "Dale Johnson" Subject: RE: Pietenpol-List: Firewall You can't use aluminum the FAA won't accept it. It has to low melting point. I used stainless steel that I engin turned. It looks pretty good. Gal steel wil work and the FAA will accept it. Dale Mpls, ----- Original Message ----- From: Subject: Pietenpol-List: Firewall My Piet's basic fuselage structure is finished and I'm writing to ask about the firewall. What do most Pieters cover their firewall with, i.e. I assume steel or aluminum? Do you put some of that fireproof fabric in between the metal and the plywood firewall bulkhead? I'm building a Model A powered Piet so mine also has the "shelf" area behind the engine...would appreciate any advice. Many thanks! Fred B.