Pietenpol-List: RE: R/C Stuff
Posted: Fri Mar 29, 2002 11:39 pm
Original Posted By: TWINBOOM [mailto:TWINBOOM(at)email.msn.com]
Doug,I was just in Winnipeg the other day and walked over to a museum that is onthe field. Closed for the season... Oh well. But there were a couple ofthe radial engine powered CLs that you are building one of. I saw thephotos a while ago.It is a bigger airplane than I imagined, both yours and the real ones.I think you are getting some instruments mixed up. The turn and bankindicator is also known as a needle and ball. It is round and fits in a3.125" hole in the dash and needs a suction source to operate the gyro. Theneedle is gyro driven and displaces to one side or the other based on rateof turn info as provided by the gyro... It is almost 99.9999% used inconjucnction with a built into the instrument inclinometer. This is thecurved tube that has the curve facing down. It has a ball that is in someunfreezable fluid. It has two lubber lines set at the bottom, one to eitherside of the ball.I have the turn and banks and not the inclinometers by themselves. Theinclinometer is probably the most important instrument you have in a shiplike the piet. It is used to maintain coordination between the rudder andthe aileron control displacements. It is not required by FAR but I highlyrecommend at least one in the middle of the panel up high where you canglance at it when on approach.I agreee that one should be in each cockpit. They wiegh a few ounces.You can make a Johnson style airspeed as used on the Jenny. It is mountedout on the struts and is a wire and spring arrangement with a paddle on theend. As you go faster, the paddle moves back due to the wind and the wiresits over a set of calibrated numbers so you can read the airspeed. Imaginea nose gear for RC with a 2 by 2 plate instead of a tire. As you fly thenose gear would displace back due to the coil spring wound into the gear.Get it?I propose we shift emphasis over to a mechanical tach and an altimeter andthe rebuildable compass. The tach will be determined by the engine you windup with as some turn one way and some turn the other. The usual is a CWrotation but the A-65 used the CCW rotation. I do not know about thecorvair. Some use electric senders but this might not work if you have noelectrical system.I think we are a little early on this stuff so why don't we wait til youhave a better idea about what will equip the Blackburn Special.You need the following per FAR:AltimeterAirspeedCompassOil Temp (air cooled engines) or coolant temp (water cooled engines)TachometerOil PressureHope this helps.Chris-----Original Message-----
Doug,I was just in Winnipeg the other day and walked over to a museum that is onthe field. Closed for the season... Oh well. But there were a couple ofthe radial engine powered CLs that you are building one of. I saw thephotos a while ago.It is a bigger airplane than I imagined, both yours and the real ones.I think you are getting some instruments mixed up. The turn and bankindicator is also known as a needle and ball. It is round and fits in a3.125" hole in the dash and needs a suction source to operate the gyro. Theneedle is gyro driven and displaces to one side or the other based on rateof turn info as provided by the gyro... It is almost 99.9999% used inconjucnction with a built into the instrument inclinometer. This is thecurved tube that has the curve facing down. It has a ball that is in someunfreezable fluid. It has two lubber lines set at the bottom, one to eitherside of the ball.I have the turn and banks and not the inclinometers by themselves. Theinclinometer is probably the most important instrument you have in a shiplike the piet. It is used to maintain coordination between the rudder andthe aileron control displacements. It is not required by FAR but I highlyrecommend at least one in the middle of the panel up high where you canglance at it when on approach.I agreee that one should be in each cockpit. They wiegh a few ounces.You can make a Johnson style airspeed as used on the Jenny. It is mountedout on the struts and is a wire and spring arrangement with a paddle on theend. As you go faster, the paddle moves back due to the wind and the wiresits over a set of calibrated numbers so you can read the airspeed. Imaginea nose gear for RC with a 2 by 2 plate instead of a tire. As you fly thenose gear would displace back due to the coil spring wound into the gear.Get it?I propose we shift emphasis over to a mechanical tach and an altimeter andthe rebuildable compass. The tach will be determined by the engine you windup with as some turn one way and some turn the other. The usual is a CWrotation but the A-65 used the CCW rotation. I do not know about thecorvair. Some use electric senders but this might not work if you have noelectrical system.I think we are a little early on this stuff so why don't we wait til youhave a better idea about what will equip the Blackburn Special.You need the following per FAR:AltimeterAirspeedCompassOil Temp (air cooled engines) or coolant temp (water cooled engines)TachometerOil PressureHope this helps.Chris-----Original Message-----