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Wing Bolt replacement Yak 55/ 52

 
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Steve Geard



Joined: 09 Dec 2013
Posts: 36

PostPosted: Wed Nov 12, 2014 11:04 pm    Post subject: Wing Bolt replacement Yak 55/ 52 Reply with quote

Hey up. I'm looking to ream out and replace the wing attachment bolts on my Yak55m with some oversized bolts +0.5mm. I must be a bit hard on the old dear as she's developed a bit of play on both sides.
The NZ CAA requires the usual screeds of paperwork.
Anyone know of any oversize bolts that come with paperwork. Or any design work thats been documented. Has anyone got any info on Yak52's having larger bolts installed?
Cheers Steve Very Happy


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Dawg



Joined: 19 May 2013
Posts: 355

PostPosted: Thu Nov 13, 2014 7:39 am    Post subject: Wing Bolt replacement Yak 55/ 52 Reply with quote

how do they know you simply replaced bolts?
On Nov 13, 2014, at 12:04 AM, Steve Geard <stevegeard(at)xtra.co.nz> wrote:

Quote:


Hey up. I'm looking to ream out and replace the wing attachment bolts on my Yak55m with some oversized bolts +0.5mm. I must be a bit hard on the old dear as she's developed a bit of play on both sides.
The NZ CAA requires the usual screeds of paperwork.
Anyone know of any oversize bolts that come with paperwork. Or any design work thats been documented. Has anyone got any info on Yak52's having larger bolts installed?
Cheers Steve Very Happy

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SteveO




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richard.goode(at)russiana
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PostPosted: Thu Nov 13, 2014 11:43 am    Post subject: Wing Bolt replacement Yak 55/ 52 Reply with quote

It is standard practice on both these Yaks, when there is wear in the wing
mounting bolts/fittings to very slightly ream out the fitting and install
larger bolts.

We can supply such bolts, made to any size, from the correct and
heat-treated material, importantly with an EASA "form one" which is the
highest qualification in Europe for aviation components.

Please contact me off list.

Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW

Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
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heaysr(at)telus.net
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PostPosted: Thu Nov 13, 2014 10:27 pm    Post subject: Wing Bolt replacement Yak 55/ 52 Reply with quote

Hi Richard

Exactly the problem with my Yak 55M

The bolts remain circular but the wing and fuselage mounts are slightly oval
requiring reaming to slightly over size.

So two questions for you:
- how to ream?
- once reamed and the O/S bolt diameter determined, what's the delivery on
the O/S diameter bolts?

Regards

Royden



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