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
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| Subject: | Elevator counterweight |
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
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| Subject: | Re: 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 <rv610dave@gmail.com> 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
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| Subject: | Re: Elevator counterweight |
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
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| Subject: | Re: 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 <rv610dave@gmail.com> 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
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| Subject: | Re: Elevator counterweight |
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
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| Subject: | 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
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| Subject: | 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 <rv610dave@gmail.com> 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
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| Subject: | 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 <rv610dave@gmail.com> 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
>
>
>
>
>
>
>
>
>
>
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