Mounting wheel pants

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Mounting wheel pants

Postby Rick524 » Sat Jan 07, 2017 1:32 pm

Hi all, I'm working on mounting wheel pants on my scratch built Sonex. I have 5" tires, Tracy Obrien axles,
Great Plains disc brakes and the Azuza tri star rims. I've added 1" width to the Sonex wheel pants to fit
over the 5" tires. I have the outboard mounting figured out, but a picture of the inboard side would sure
help.

Thanks!

Rick
Sonex 524
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Re: Mounting wheel pants

Postby sonex892. » Sat Jan 07, 2017 6:12 pm

Hi Rick

Until recently I had a similar setup with the GP brakes and 500.5 tires. I've now replaced these pants with pressure recovery pants.

I cut out around the caliper, drilled and tapped 3 holes in the flat part of the Great Plains cast aluminium caliper support and fitted a small bracket with nutplate for the rear hole. Note the upper right mount hole is a spare from when I had standard drum brakes.

Sorry I cant find a photo with the wheel pants fitted but a photo of a wheel pant may give you the idea.
Image

Steve
Sonex 892
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Lazair kit 1981 sold
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Sonex kit 2010
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Re: Mounting wheel pants

Postby Rick524 » Sun Jan 08, 2017 1:08 pm

Thanks Steve! Maybe this is a dumb question...but, was your brake disc inside or outside the wheel pant?
Even with the extra inch of width I added, the pant would be pretty stressed to have the disc inside.

Rick
Sonex 524
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Re: Mounting wheel pants

Postby sonex892. » Sun Jan 08, 2017 5:34 pm

Hi Rick

The disc was inside, only the caliper was exposed. Mine original wheel pants weren't widened, so it was a very tight fit. It worked this way for 5 years and 400+ landings. It did have to be stressed to fit. The only cracking I ever experienced was where I glassed in a bit of a junction fillet. It wasn't the pant cracking just the bond between the pant and the fillet.

These photos of my new wheel pant support bracket may help, the cutouts were traced directly from the old wheel pants. The flat part of the bracket screws to the same holes on the caliper bracket as the original wheel pants did.
ImageImage
ImageImage
Image

Steve
Sonex 892
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Re: Mounting wheel pants

Postby Rick524 » Sun Jan 08, 2017 9:25 pm

Nice job on the new wheel pants Steve, they look good! I did a search on pressure recovery wheel pants
and found some interesting reading, might have to give them a shot. Thanks for the help!

Rick
Sonex 524
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Re: Mounting wheel pants

Postby fastj22 » Mon Jan 09, 2017 10:35 am

Those look like Vans pants. Which model? I like them.

John Gillis
SEL Private, Comm Glider, Tow pilot (Pawnee Driver)
Waiex N116YX, Jabiru 3300, Tail dragger,
First flight, 3/16/2013. 403 hours and climbing.
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Re: Mounting wheel pants

Postby Bryan Cotton » Mon Jan 09, 2017 11:55 am

They do look good. Did they buy you any speed?
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Re: Mounting wheel pants

Postby sonex892. » Mon Jan 09, 2017 5:29 pm

fastj22 wrote:Those look like Vans pants. Which model? I like them.

Home made John, based on the RV shape. They're about 20% bigger than an RV6 nose wheel pant, which was too tight for the 500.5 tires
Bryan Cotton wrote:They do look good. Did they buy you any speed?

I'd like to think they are Bryan. Not much though, maybe a knot or 2 if any.

Steve
Sonex 892
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Sonerai 2LS plansbuilt 2003 sold
Sonex kit 2010
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Re: Mounting wheel pants

Postby fastj22 » Mon Jan 09, 2017 5:34 pm

sonex892. wrote:
fastj22 wrote:Those look like Vans pants. Which model? I like them.

Home made John, based on the RV shape. They're about 20% bigger than an RV6 nose wheel pant, which was too tight for the 500.5 tires
Bryan Cotton wrote:They do look good. Did they buy you any speed?

I'd like to think they are Bryan. Not much though, maybe a knot or 2 if any.

Steve
Sonex 892

If you got molds, care to make me a set?

John Gillis
SEL Private, Comm Glider, Tow pilot (Pawnee Driver)
Waiex N116YX, Jabiru 3300, Tail dragger,
First flight, 3/16/2013. 403 hours and climbing.
Home: CO15. KOSH x 5
Flying a B-Model Conversion (Super Bee Baby!)
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Re: Mounting wheel pants

Postby rizzz » Mon Jan 09, 2017 6:11 pm

fastj22 wrote:
sonex892. wrote:
fastj22 wrote:Those look like Vans pants. Which model? I like them.

Home made John, based on the RV shape. They're about 20% bigger than an RV6 nose wheel pant, which was too tight for the 500.5 tires
Bryan Cotton wrote:They do look good. Did they buy you any speed?

I'd like to think they are Bryan. Not much though, maybe a knot or 2 if any.

Steve
Sonex 892

If you got molds, care to make me a set?


Or,
You could come to an arrangement Peter to to pass on the design/mould to the ansoneng company which already makes many other great Sonex improvement components ;-).
Michael
Sonex #145 from scratch (mostly)
Taildragger, 2.4L VW engine, AeroInjector, Prince 54x48 P-Tip
VH-MND, CofA issued 2nd of November 2015
First flight 7th of November 2015
Phase I Completed, 11th of February 2016
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