---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Wed 02/18/15: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:02 PM - Elevator counterweight (rvdave) 2. 04:20 PM - Re: Elevator counterweight (Jesse Saint) 3. 04:50 PM - Re: Elevator counterweight (rvdave) 4. 04:55 PM - Re: Elevator counterweight (Kelly McMullen) 5. 07:34 PM - Re: Elevator counterweight (rvdave) 6. 07:53 PM - Re: Re: Elevator counterweight (Kelly McMullen) 7. 08:01 PM - Re: Re: Elevator counterweight (Jesse Saint) 8. 08:02 PM - Re: Re: Elevator counterweight (Jesse Saint) ________________________________ Message 1 _____________________________________ Time: 04:02:53 PM PST US Subject: RV10-List: Elevator counterweight From: "rvdave" I am installing the elevators, this is a kit I bought from someone who already had the lead weights bolted on and the fiberglass tips riveted on. When I went to install the elevator with the trim tab attached I expected to let go of the elevator and see it fall to full up position but instead it fell to full down elevator. It doesn't look like the weight had been cut, drilled or shaved in any way. Is this normal? Does the elevator need to balance to stay level by itself during initial install? With the pushrods hooked up there is enough resistance with the pitch servo to hold it where I put it. -------- Dave Ford RV6 for sale RV10 building Cadillac, MI Read this topic online here: http://forums.matronics.com/viewtopic.php?p=438486#438486 ________________________________ Message 2 _____________________________________ Time: 04:20:25 PM PST US From: Jesse Saint Subject: Re: RV10-List: Elevator counterweight I don't remember the number, but there is a procedure for checking the balance (I think in the little notebook the is the beginning of the building plans). Jesse Saint Saint Aviation, Inc. 352-427-0285 jesse@saintaviation.com Sent from my iPad > On Feb 18, 2015, at 7:00 PM, rvdave wrote: > > > I am installing the elevators, this is a kit I bought from someone who already had the lead weights bolted on and the fiberglass tips riveted on. When I went to install the elevator with the trim tab attached I expected to let go of the elevator and see it fall to full up position but instead it fell to full down elevator. It doesn't look like the weight had been cut, drilled or shaved in any way. Is this normal? Does the elevator need to balance to stay level by itself during initial install? With the pushrods hooked up there is enough resistance with the pitch servo to hold it where I put it. > > -------- > Dave Ford > RV6 for sale > RV10 building > Cadillac, MI > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=438486#438486 > > > > > > > > > > ________________________________ Message 3 _____________________________________ Time: 04:50:50 PM PST US Subject: RV10-List: Re: Elevator counterweight From: "rvdave" I think I do have that booklet at the hangar, I will look into that. -------- Dave Ford RV6 for sale RV10 building Cadillac, MI Read this topic online here: http://forums.matronics.com/viewtopic.php?p=438488#438488 ________________________________ Message 4 _____________________________________ Time: 04:55:09 PM PST US From: Kelly McMullen Subject: Re: RV10-List: Elevator counterweight I don't think you get the sheets on checking rigging and balance of the control surfaces until the finish kit. It would be a lot better if the info were on the plans at the end of the build of each control surface. I'm not all that inclined to remove the control surfaces yet again to check balance, when it will have to be done again when the plane is painted. On 2/18/2015 5:16 PM, Jesse Saint wrote: > > I don't remember the number, but there is a procedure for checking the balance (I think in the little notebook the is the beginning of the building plans). > > Jesse Saint > Saint Aviation, Inc. > 352-427-0285 > jesse@saintaviation.com > > Sent from my iPad > >> On Feb 18, 2015, at 7:00 PM, rvdave wrote: >> >> >> I am installing the elevators, this is a kit I bought from someone who already had the lead weights bolted on and the fiberglass tips riveted on. When I went to install the elevator with the trim tab attached I expected to let go of the elevator and see it fall to full up position but instead it fell to full down elevator. It doesn't look like the weight had been cut, drilled or shaved in any way. Is this normal? Does the elevator need to balance to stay level by itself during initial install? With the pushrods hooked up there is enough resistance with the pitch servo to hold it where I put it. >> >> -------- >> Dave Ford >> RV6 for sale >> RV10 building >> Cadillac, MI >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=438486#438486 >> >> >> >> >> >> >> >> >> >> > > ________________________________ Message 5 _____________________________________ Time: 07:34:41 PM PST US Subject: RV10-List: Re: Elevator counterweight From: "rvdave" Interesting.... I found this in the archives: Vans does have a spec for elevator balance. It can be found in their Final Inspection and Flight Test Document on Page 2. For the -10 it is 37.5 in/lbs Trailing Edge Heavy. The factory can tell you how to rig the appropriate test equipment... John Hasbrouck #40264 [quote][b] Actually the equipment needed for checking the counterbalances is quite simple. For the elevators you need a rod attached to the elevators extending forward to a point 37.5 inches from the hinge centerline with a 1 lb weight attached at that point. ( 37.5 in/lb ). This is with both elevators attached, the trim in place and the tips on. If your choose to pop rivet the tips on you should probably wait until the final balance is done. ( Didn't tell us that in the plans did they? I used #4 screws and nutplates for mine. ) Adjust counterweights so the elevators rest trailing edge low. Any other builders who want to correct or expand on the above procedure please do so. I'd appreciate constructive advise particularly from previous RVers. BTW. The old -6 plans called for the builder to melt lead ingots into a mould to form the counterweights. Boy are we spoiled!! John Hasbrouck -------- Dave Ford RV6 for sale RV10 building Cadillac, MI Read this topic online here: http://forums.matronics.com/viewtopic.php?p=438490#438490 ________________________________ Message 6 _____________________________________ Time: 07:53:08 PM PST US From: Kelly McMullen Subject: Re: RV10-List: Re: Elevator counterweight That assumes that the rod could be attached exactly at the hinge point. Or you can measure the distance from the hinge point to the trailing edge. With the hinge bolts on a knife edge, place a scale under the trailing edge to measure the weight there times the distance. I'm curious as to how many of the flying RV-10s were checked for flight control balance before first flight, and if so, how much weight adjustment was needed, if any. On 2/18/2015 8:31 PM, rvdave wrote: > > Interesting.... I found this in the archives: > > Vans does have a spec for elevator balance. It can be found in their Final Inspection and Flight Test Document on Page 2. For the -10 it is 37.5 in/lbs Trailing Edge Heavy. The factory can tell you how to rig the appropriate test equipment... > > John Hasbrouck > #40264 > [quote][b] > > Actually the equipment needed for checking the counterbalances is quite > simple. For the elevators you need a rod attached to the elevators > extending forward to a point 37.5 inches from the hinge centerline with a 1 > lb weight attached at that point. ( 37.5 in/lb ). This is with both > elevators attached, the trim in place and the tips on. If your choose to > pop rivet the tips on you should probably wait until the final balance is > done. ( Didn't tell us that in the plans did they? I used #4 screws and > nutplates for mine. ) Adjust counterweights so the elevators rest trailing > edge low. Any other builders who want to correct or expand on the above > procedure please do so. I'd appreciate constructive advise particularly > from previous RVers. BTW. The old -6 plans called for the builder to melt > lead ingots into a mould to form the counterweights. Boy are we spoiled!! > John Hasbrouck > > -------- > Dave Ford > RV6 for sale > RV10 building > Cadillac, MI > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=438490#438490 > > ________________________________ Message 7 _____________________________________ Time: 08:01:51 PM PST US From: Jesse Saint Subject: Re: RV10-List: Re: Elevator counterweight You could also do double the weight at half the distance, etc. figuring the amount of weight to put on top of both counterbalance arms would be my preference. Jesse Saint I-TEC, Inc. jesse@itecusa.org www.itecusa.org www.mavericklsa.com C: 352-427-0285 O: 352-465-4545 F: 815-377-3694 Sent from my iPhone > On Feb 18, 2015, at 10:31 PM, rvdave wrote: > > > Interesting.... I found this in the archives: > > Vans does have a spec for elevator balance. It can be found in their Final Inspection and Flight Test Document on Page 2. For the -10 it is 37.5 in/lbs Trailing Edge Heavy. The factory can tell you how to rig the appropriate test equipment... > > John Hasbrouck > #40264 > [quote][b] > > Actually the equipment needed for checking the counterbalances is quite > simple. For the elevators you need a rod attached to the elevators > extending forward to a point 37.5 inches from the hinge centerline with a 1 > lb weight attached at that point. ( 37.5 in/lb ). This is with both > elevators attached, the trim in place and the tips on. If your choose to > pop rivet the tips on you should probably wait until the final balance is > done. ( Didn't tell us that in the plans did they? I used #4 screws and > nutplates for mine. ) Adjust counterweights so the elevators rest trailing > edge low. Any other builders who want to correct or expand on the above > procedure please do so. I'd appreciate constructive advise particularly > from previous RVers. BTW. The old -6 plans called for the builder to melt > lead ingots into a mould to form the counterweights. Boy are we spoiled!! > John Hasbrouck > > -------- > Dave Ford > RV6 for sale > RV10 building > Cadillac, MI > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=438490#438490 > > > > > > > > > > ________________________________ Message 8 _____________________________________ Time: 08:02:27 PM PST US From: Jesse Saint Subject: Re: RV10-List: Re: Elevator counterweight You could also do double the weight at half the distance, etc. figuring the amount of weight to put on top of both counterbalance arms would be my preference. Jesse Saint I-TEC, Inc. jesse@itecusa.org www.itecusa.org www.mavericklsa.com C: 352-427-0285 O: 352-465-4545 F: 815-377-3694 Sent from my iPhone > On Feb 18, 2015, at 10:31 PM, rvdave wrote: > > > Interesting.... I found this in the archives: > > Vans does have a spec for elevator balance. It can be found in their Final Inspection and Flight Test Document on Page 2. For the -10 it is 37.5 in/lbs Trailing Edge Heavy. The factory can tell you how to rig the appropriate test equipment... > > John Hasbrouck > #40264 > [quote][b] > > Actually the equipment needed for checking the counterbalances is quite > simple. For the elevators you need a rod attached to the elevators > extending forward to a point 37.5 inches from the hinge centerline with a 1 > lb weight attached at that point. ( 37.5 in/lb ). This is with both > elevators attached, the trim in place and the tips on. If your choose to > pop rivet the tips on you should probably wait until the final balance is > done. ( Didn't tell us that in the plans did they? I used #4 screws and > nutplates for mine. ) Adjust counterweights so the elevators rest trailing > edge low. Any other builders who want to correct or expand on the above > procedure please do so. I'd appreciate constructive advise particularly > from previous RVers. BTW. The old -6 plans called for the builder to melt > lead ingots into a mould to form the counterweights. Boy are we spoiled!! > John Hasbrouck > > -------- > Dave Ford > RV6 for sale > RV10 building > Cadillac, MI > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=438490#438490 > > > > > > > > > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv10-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV10-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rv10-list Browse Digests http://www.matronics.com/digest/rv10-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.