I don't necessarily know what I'm talking about in the aviation area, but I
do home-shop machining as a hobby and have faced things like this before.
When I have a hole that has buggered or pulled-out threads, I drill it out
to a larger size, tap it and install a bolt or a piece of threaded rod
usi
On 10/28/2020 10:08 PM, Jeff Scott via KRnet wrote:
Space your bolt length and washers just right, and maybe you won't need to
break it off.
+++
Thanks, Jeff. That should be easy to determine. If the Helicoil holds
The tang is driven in first with the installation tool and would be on the
inside. Space your bolt length and washers just right, and maybe you won't
need to break it off. Try it on a test piece first so you know how deep you can
go and whether breaking it off can be done.
-Jeff
>
> On 10/28
The tang on the helicoil is used to insert it using the special tool with the
notch in the kit.
John
> On Oct 28, 2020, at 5:01 PM, Flesner via KRnet wrote:
>
> On 10/28/2020 4:21 PM, Mark Langford via KRnet wrote:
>>
>> I would simply go with the Heli-Coils.
>
> +++
On 10/28/2020 4:21 PM, Mark Langford via KRnet wrote:
I would simply go with the Heli-Coils.
++
Thanks. Here goes my next 6 gallon of 100LL.
Larry Flesner
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On 10/28/2020 4:41 PM, Jeff Scott via KRnet wrote:
The question is whether you can break off the tang on a helicoil in such a
shallow hole without damaging the helicoil itself
lf I size the bolt right do I need to break the tang? Seems like the
he
>
> 2. Question. would the Helicoil be as effective as the Keenserts in this
> application? What thread size is the outside of the 3/16 insert and
> would there be enough threads in the hole to hold? Can I drill the
> threads out of present holes and have enough material to thread a 3/16"
Larry wrote:
> So, that fix is out. I want to proceed through my other possible fixes
> in a manner as to not eliminate the easiest and cheapest fixes as I move
> to more aggressive solutions without taking a saws-all to my fuel
tank...
I would simply go with the Heli-Coils. They work OK,
Update on fuel leak fix. I did a test today on the Poly-Nuts and they
are not up to the task. Placed a scrap piece of aluminum in the vise
and drilled three holes. Installed Poly-Nuts with puller, then snugged
them down a bit more with wrench. They might tighten up enough to seal
but I i
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