Exhaust Hangers - sump brackets

[TASEsq]

Hi!

I didn’t order the Van’s exhaust hangar kit as I got a custom exhaust from Clint which came with some hangers, but it’s missing the little tabs to hang the exhaust from the sump - EX-00004E.

Seems Van’s doesn’t have these on their store as seperate parts.

Can anyone tell me what they are made of (and the thickness?). I am assuming steel sheet?

I have some 0.040” steel sheet - will probably just make them, and paint them so they don’t rust. They seem simple enough.

 

[Stevea]

I don’t have calipers with me, but just now looking at them my mark 1 eyeballs say about 1/16” thick. Maybe 0.062 - 0.070”. Not sure I would trust ones made from 0.040” steel. I would guess they are 4130 steel.

 

[mburch]

I just finished remaking mine after finding one snapped during an oil change. The originals were (I think) 0.050"-0.063" and fairly narrow, not more than 1/2". I made a new set from .063" 4130 that are 5/8" wide, which adds some meat without making them too wide to fit.

 

[mc607]

Can anyone tell me what they are made of (and the thickness?).

Stainless steel, 5/8” wide .072 thick.

 

[TASEsq]

I think I would prefer stainless. Have to go see the local metal shop and see if I can steal (stainless) a piece!

 

[TASEsq]

Can anyone tell me a rough angle?

 

[dmn056]

I think I would prefer stainless. Have to go see the local metal shop and see if I can steal (stainless) a piece!

You're well placed to visit Airport Metals at Tullamarine. I've bought stuff online from them, and they've been very helpful.

 

[TASEsq]

You're well placed to visit Airport Metals at Tullamarine. I've bought stuff online from them, and they've been very helpful.

Yeah they are good. 1/4 sheet minimum though - I’ve got a few thicknesses throughout the build for small parts fab.

I got some 304 stainless 100x100 mm off eBay for $14. Should do the job.

 

[JonJay]

4130 is going to be better for this application than most grades of stainless.
It will be stronger, lighter, form more easily, and be less prone to cracking.

In the original hangar kits the steel was powder coated. Not sure what it was but I assume 4130.

 

[TASEsq]

4130 is going to be better for this application than most grades of stainless.
It will be stronger, lighter, form more easily, and be less prone to cracking.

In the original hangar kits the steel was powder coated. Not sure what it was but I assume 4130.

Thanks, the issue with the 4130 is I would need to buy a 3’x1’ sheet - cheaper to buy the whole vans hangar kit again. Can’t find anywhere to buy a small sheet.

 

[lr172]

Thanks, the issue with the 4130 is I would need to buy a 3’x1’ sheet - cheaper to buy the whole vans hangar kit again. Can’t find anywhere to buy a small sheet.

Mcmaster sells 4140 in small sizes.

 

[dmn056]

Thanks, the issue with the 4130 is I would need to buy a 3’x1’ sheet - cheaper to buy the whole vans hangar kit again. Can’t find anywhere to buy a small sheet.

Try https://racetechsteel.com.au/productcategory/sheet-plate/ - I bought a 1 ft x 1ft x 0.090" sheet of 4130 from them for AUD65 including shipping three years ago

 

[dmn056]

Mcmaster sells 4140 in small sizes.

Yes, but their shipping costs to Australia are so high it might as well be unobtainium.

 

[TASEsq]

Yes, but their shipping costs to Australia are so high it might as well be unobtainium.

If only we had McMaster and send cut send here!

 

[JonJay]

Vans sells .050 1/2” 4130 “straps” in a couple lengths. I believe they are for fabricating rudder cable straps.
I’ll put a mic on my hangars tomorrow and see what thickness they are.
Worth a look anyway.

Edit - I see they have small sheets of .063 also.

 

[JonJay]

My stock brackets are .063

 

[TASEsq]

I

Try https://racetechsteel.com.au/productcategory/sheet-plate/ - I bought a 1 ft x 1ft x 0.090" sheet of 4130 from them for AUD65 including shipping three years ago

Thanks for this - they want $81 for a 1' x 1' sheet.

 

[lr172]

I

Thanks for this - they want $81 for a 1' x 1' sheet.

I am sure .063 mild steel would be fine fo this application. Available at local hw store. My tubes are connected to an adle clamp (much thinner) and still holding at 1600 hours.

 

[TASEsq]

I can see now why Van’s didn’t choose stainless when making aeroplanes - what a pain in the ass this stuff is!

Anyway, got er done. They will be serviceable - not super pretty but serviceable!

 

[TASEsq]

While I’ve got the brains trust assembled, does anyone have any pics of how the vetterman exhaust hangar brackets / straps are used?

I have the crossover dual pipe setup.

The hangars from the sump must go on the top 2 ears, but I expected the other ears to be facing inboard for the cross brace. Does it stick downward and you brace across the two tabs with the 2 longer braces?

Kinda like the layout below? (This would be looking forward or aft).

 

[TASEsq]

I found this post about the “trombone” exhaust. It seems this is the hangar kit I got - looks like the big tab might be used to hang the pipe off the sump, with an additional hose tube support off to the side to the engine mount?

https://vansairforce.net/threads/ve...any-tips-would-be-helpful.176054/post-1608736

 

[rapid_ascent]

Trent, It may be a little late now but I received those 2 tabs in the kit of hardware that Vetterman provided with my exhaust that I purchased directly from them. It was probably just an omission.

 

[JonJay]

I can see now why Van’s didn’t choose stainless when making aeroplanes - what a pain in the ass this stuff is!

Anyway, got er done. They will be serviceable - not super pretty but serviceable!

Just watch them closely. Stainless work hardens and this area has a lot of vibration.
They look great.

 

[JonJay]

This is stock. Nearing 1000 hours. Never had an issue.
Rough up the stainless tubes so the hose can grip. Use metal lock nuts.
The hangars should naturally find their place hanging “free” before tightening anything up. Don’t force anything into place.
Oil separator going on now. Otherwise the breather dumped onto the left clamp to burn away. Still worked well for all these years.

 

[TASEsq]

Trent, It may be a little late now but I received those 2 tabs in the kit of hardware that Vetterman provided with my exhaust that I purchased directly from them. It was probably just an omission.

I had thought that - but didn’t want to bother Clint tbh. He did a good job on my exhaust and I figured I’d just make them.

 

[TASEsq]

This is stock. Nearing 1000 hours. Never had an issue.
Rough up the stainless tubes so the hose can grip. Use metal lock nuts.
The hangars should naturally find their place hanging “free” before tightening anything up. Don’t force anything into place.
Oil separator going on now. Otherwise the breather dumped onto the left clamp to burn away. Still worked well for all these years. View attachment 107979View attachment 107980View attachment 107981View attachment 107982View attachment 107982View attachment 107981View attachment 107980View attachment 107979

I would like to do it like that, but my brackets on the exhaust pipes are different!

 

[JonJay]

I would like to do it like that, but my brackets on the exhaust pipes are different!

You just need to add the angle to it. Similar to what you already fabricated but 90 deg. or weld one on.