Today's Message Index:
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1. 03:57 PM - RV-8 Wing tank removal (Tracy Crook)
2. 04:12 PM - Re: RV-8 Wing tank removal (Brian Huffaker)
3. 04:15 PM - Re: RV-8 Wing tank removal (Carl Froehlich)
4. 04:21 PM - Re: RV-8 Wing tank removal (Tcwtech)
5. 05:13 PM - Re: RV-8 Wing tank removal (Charlie England)
Message 1
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| Subject: | RV-8 Wing tank removal |
Working on the takeoff damage to the RV-8 and need to remove the tank for ac
cess and to repair the tank damage. I=99ve removed all the screws aro
und the perimeter of the tank and the three 3/16=9D bolts at the root i
nto the spar web. . That=99s all I recall holding on the tank but it r
efuses to budge more than maybe .03=9D away from its position.
Are there any other fasteners holding the tank on? I=99m in CO away f
rom my plans. Any ideas on tank removal if that=99s not the problem?
Thanks for any info or suggestions,
Tracy Crook
Message 2
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| Subject: | Re: RV-8 Wing tank removal |
On Thu, 9 Aug 2018, Tracy Crook wrote:
> Working on the takeoff damage to the RV-8 and need to remove the tank
>for access and to repair the tank damage. Ive removed all the screws
>around the perimeter of the tank and the three 3/16 bolts at the root
>into the spar web. . Thats all I recall holding on the tank but it
>refuses to budge more than maybe .03 away from its position.
There are about 21 3/16" bolts in the spar web going into the "z-angles"
on the back of the tank. If you only removed three at the root you left
most of them in. The rest can be removed through the wing access holes on
the bottom. Many are in the next rib bay over from the access hole, so
use a mirror and a flashlight to check that you got them all. There are
three in pretty much every rib bay behind the tank, except where the wing
walk is.
Other than that when I removed a tank to fix a fuel leak, it took a
harder pull than I was expecting to pop the skin dimples out.
Brian Huffaker, DSWL (bifft@xmission.com)
RV-8A 80091 Test flying
Message 3
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| Subject: | Re: RV-8 Wing tank removal |
Yes - many more 3/16=9D bolts holding the Z braces to the spar.
Access them via the bottom inspection plates.
Carl
> On Aug 9, 2018, at 6:15 PM, Tracy Crook <rwstracy@gmail.com> wrote:
>
> Working on the takeoff damage to the RV-8 and need to remove the tank for a
ccess and to repair the tank damage. I=99ve removed all the screws ar
ound the perimeter of the tank and the three 3/16=9D bolts at the root
into the spar web. . That=99s all I recall holding on the tank but i
t refuses to budge more than maybe .03=9D away from its position.
>
> Are there any other fasteners holding the tank on? I=99m in CO away
from my plans. Any ideas on tank removal if that=99s not the problem
?
>
> Thanks for any info or suggestions,
> Tracy Crook
>
Message 4
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| Subject: | Re: RV-8 Wing tank removal |
There are like 12 or 15 bolts AN-3 through the back of the spar and into z b
rackets on the back of the tank. All accessed through the inspection hatch
es.
Bob Newman
TCW Technologies, LLC
610-928-3420
> On Aug 9, 2018, at 6:15 PM, Tracy Crook <rwstracy@gmail.com> wrote:
>
> Working on the takeoff damage to the RV-8 and need to remove the tank for a
ccess and to repair the tank damage. I=99ve removed all the screws ar
ound the perimeter of the tank and the three 3/16=9D bolts at the root
into the spar web. . That=99s all I recall holding on the tank but i
t refuses to budge more than maybe .03=9D away from its position.
>
> Are there any other fasteners holding the tank on? I=99m in CO away
from my plans. Any ideas on tank removal if that=99s not the problem
?
>
> Thanks for any info or suggestions,
> Tracy Crook
>
Message 5
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| Subject: | Re: RV-8 Wing tank removal |
Hey Tracy,
Same tank as the -7, AFAIK. The z brackets are behind every rib, if
memory serves. I think I can email you that page from the -7 plans, if
you want.
You can slip stuff like old credit cards or other thin items between
the back edge of the tank & the spar to lift the dimples prior to
removing the tank. I've pulled the tanks on the -4 several times. I
usually pull out the root end slightly first, using a wedge between the
nose attach angles. Then, if needed, I wedge something in the slight V
between the other end of the tank skin and the wing leading edge skin,
and push the root end back aft. This will shift the tank inboard and
move the outboard end forward slightly. Makes the rest of the removal go
easier for me.
Charlie
On 8/9/2018 6:21 PM, Tcwtech wrote:
> There are like 12 or 15 bolts AN-3 through the back of the spar and
> into z brackets on the back of the tank. All accessed through the
> inspection hatches.
>
> Bob Newman
> TCW Technologies, LLC
> 610-928-3420
>
> On Aug 9, 2018, at 6:15 PM, Tracy Crook <rwstracy@gmail.com
> <mailto:rwstracy@gmail.com>> wrote:
>
>> Working on the takeoff damage to the RV-8 and need to remove the tank
>> for access and to repair the tank damage. Ive removed all the
>> screws around the perimeter of the tank and the three 3/16
>> <x-apple-data-detectors://0> bolts at the root into the spar web. .
>> Thats all I recall holding on the tank but it refuses to budge more
>> than maybe .03 away from its position.
>>
>> Are there any other fasteners holding the tank on? Im in CO away
>> from my plans. Any ideas on tank removal if thats not the problem?
>>
>> Thanks for any info or suggestions,
>> Tracy Crook
>>
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