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djaflyact
Joined: 14 Oct 2013
Posts: 27
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 Posted: Wed Nov 13, 2013 7:39 pm Post subject: Belleville Washer |
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Seems I have misplaced my Belleville Washer for the pip pin after removing it from they spar. Does anyone know a good source in the US for the washer? I've googled the part number and it hits on a UK website only and Europa. Can't seem to figure how to order it from the UK site. IT called for Hardened steel and I did order some from Fastenal, but none of their washers list hardened steel - just "steel". Not sure if that is a washer that will do the job.
Thanks,
Dave Anderson
A227
Mini U2
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asarangan(at)gmail.com
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| Posted: Thu Nov 14, 2013 4:48 pm Post subject: Belleville Washer |
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Try McMaster.com. I am sure they have it, but you may need to check if
it is made of the right material.
On Wed, Nov 13, 2013 at 10:39 PM, djaflyact <djaflyact(at)gmail.com> wrote:
| Quote: |
Seems I have misplaced my Belleville Washer for the pip pin after removing it from they spar. Does anyone know a good source in the US for the washer? I've googled the part number and it hits on a UK website only and Europa. Can't seem to figure how to order it from the UK site. IT called for Hardened steel and I did order some from Fastenal, but none of their washers list hardened steel - just "steel". Not sure if that is a washer that will do the job.
Thanks,
Dave Anderson
A227
Mini U2
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=413012#413012
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rlborger(at)mac.com
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| Posted: Thu Nov 14, 2013 4:58 pm Post subject: Belleville Washer |
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Dave,
Yes, probably something from McMaster.
See http://www.mcmaster.com/#standard-disc-springs/=pdrfji
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop.
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger(at)mac.com
On Nov 14, 2013, at 6:38 PM, Andrew Sarangan <asarangan(at)gmail.com> wrote:
Try McMaster.com. I am sure they have it, but you may need to check if
it is made of the right material.
On Wed, Nov 13, 2013 at 10:39 PM, djaflyact <djaflyact(at)gmail.com> wrote:
| Quote: |
Seems I have misplaced my Belleville Washer for the pip pin after removing it from they spar. Does anyone know a good source in the US for the washer? I've googled the part number and it hits on a UK website only and Europa. Can't seem to figure how to order it from the UK site. IT called for Hardened steel and I did order some from Fastenal, but none of their washers list hardened steel - just "steel". Not sure if that is a washer that will do the job.
Thanks,
Dave Anderson
A227
Mini U2
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=413012#413012
|
| | - The Matronics Europa-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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h&jeuropa
Joined: 07 Nov 2006
Posts: 645
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| Posted: Fri Nov 15, 2013 6:34 am Post subject: Re: Belleville Washer |
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Dave,
We think you may not need a hard washer. When we got our glider wings there was no washer in the kit. We asked Andy Draper about it. As we recall (sorry we can't seem to locate the message), Andy said the washer was necessary if there was a Spar Cup (SO3) used since the cup is not hardened and the pip pin balls need to seat against a hardened surface.
The short wing setup uses a spar cup bonded to the port spar that the tip of the stbd spar goes into. In this case a hardened washer must be bonded to the spar cup for the port pip pin.
The MG wings uses spar bushings that the builder installs and the tip bushings that are installed at the factory are the same type. These bushings have a larger diameter shoulder and do not fit the spar cup. It is not an issue at all now since Mod 78 will not allow the use of SO3 spar cups. So the port pip pin balls will contact the bushing at the tip of the stbd spar. The bushing is hardened so no washer is required.
We cut the shoulder off two of our original bushings that we had removed from the spars and used them to use to fill the tip hole in the spar when attaching the Mod 78 mold. Cutting the bushings used up a couple of Dremel cut off wheels. They are hard!!
Hope this helps.
Jim & Heather
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