One additional sales pitch for BAS harness: The stock Cessna mounting for shoulder harnesses in many legacy airplanes is a nut plate mounted in the front of the front spar carry through. In other words, you're relying on one little piece of hardware to save your life. Like at least one other harness system, BAS mounts through the entire spar carry through....a much more robust mounting system.

MTV

mtv wrote:One additional sales pitch for BAS harness: The stock Cessna mounting for shoulder harnesses in many legacy airplanes is a nut plate mounted in the front of the front spar carry through. In other words, you're relying on one little piece of hardware to save your life. Like at least one other harness system, BAS mounts through the entire spar carry through....a much more robust mounting system.

MTV

FWIW, I'm hoping to never test the relative greater robustness of my BAS system. Really!

Cary

mtv wrote:One additional sales pitch for BAS harness: The stock Cessna mounting for shoulder harnesses in many legacy airplanes is a nut plate mounted in the front of the front spar carry through. In other words, you're relying on one little piece of hardware to save your life. Like at least one other harness system, BAS mounts through the entire spar carry through....a much more robust mounting system.

Actually, the stock Cessna nutplates I've seen are located on the bottom of the spar carry-through, not the front,
and it's at the aft carry-through, not the forward one.

Just semantics I guess, but I don't know if I'd say it mounts "through the entire spar carry-through".
But I do agree that the way BAS does it is way more skookum than just bolting it to the nutplate.
On the C170/180 anyway, the BAS reel mounts to a bracket which is bolted both to that nutplate and through the forward flange of the spar carry-through hat section.

There's a good photo of this here on BigRenna's website.

http://bushwagoneast.com/category/upgrades-stcs/page/3/

Does anyone have pictures of 3rd and 4th seat (pax) shoulder harnesses in an early (SN 30000-50911) 180? It looks like Cessna addresses this with SK185-52D, but I was hoping for a picture sans headliner.

Why did cessna install the bulkhead to bulkhead straps and nutplates that sit above the rear seat?

Every crop duster I flew had the standard military seat belt and shoulder harness system. They were about four inches wide and had the standard cam that could be released with one hand, even when everything was very, very tight, as it should be.

In major Cobra, Pawnee, and CallAir crashes it did the job with no injury except knee into gunners quadrant in the Cobra.

Why are civilian belts so narrow and why don't they use the cam lock that works so well? Throw that cam and all four belt ends fall away.

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I see, dogpilot. Crop dusters are more interested in staying alive than in staying legal. Military belts were issue in the Stearman, but also were in Pawnee, CallAir, and Air Tractor. Also in many Cubs and Champs and Taylorcraft and Luscombes I trained with. The mechanic just cable anchored them to tubing. Rob, do million dollar turboprops have military belts?

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I’ve always wanted to install a set of shoulder harnesses for the rear seats (3 & 4). Never knew how best to attack it, since nobody that I know of sells a kit.

Well, thanks to slow18 above and 3 minutes of Googling, I ordered a Cessna shoulder harness kit - SK185-52D (my s/n uses version 52D6). Never knew they existed from Cessna. Air Power had them in stock, and the total price for BOTH rear seats was $367. I thought it was a typo. Cheapest Cessna part I’ve ever purchased, and possibly one of the most important. Each kit comes with parts for both middle (or even rear) seats. New belts, bolts, bolt covers, everything.

My version happens to be the cheapest version since the attach hardware was factory installed, but still...

Nice. What year is your 180?

Mine is a ‘76 185.

Any chance of an installed pic Cannon?

Yes I might go this route as well - BAS does sell rear seat shoulder harness, but at about double the price. Is this a fixed point Y harness or a side shoulder strap? Would also love to see some pictures once you have them installed.

They’re installed. Bolted right in once I found the nut plates.

They’re a single shoulder harness that goes across your body like any car. No inertial reel, but the shoulder harness unclips from the buckle in about a second.

Very low tech, but for the price, I am very happy.

I’ll try to get some pics next time I’m at the hangar.

Does anyone have pictures and information for the strap is installed above 2nd row seats back to the baggage compartment frame? The part number is 0511232-4. Cessna/preferred airparts and alpha aviation are both really proud of the ~18" piece of webbing (1200-1800for the set of 2). I'm curious if the SK185-52D SB drills holes in the metal cap fittings. Install instructions would be awesome too.

BazzLow wrote:.... I'm curious if the SK185-52D SB drills holes in the metal cap fittings. Install instructions would be awesome too.

Requested instructions attached.

mtv wrote:One additional sales pitch for BAS harness: The stock Cessna mounting for shoulder harnesses in many legacy airplanes is a nut plate mounted in the front of the front spar carry through. In other words, you're relying on one little piece of hardware to save your life. Like at least one other harness system, BAS mounts through the entire spar carry through....a much more robust mounting system.

MTV

I got BAS for my plane

But I wonder, what’s the G loading to break the stock Cessna bolt vs the G loading to break a human, if the human is dead before the bolt breaks additional steel is just extra weight and labor hours

contactflying wrote:I see, dogpilot. Crop dusters are more interested in staying alive than in staying legal. Military belts were issue in the Stearman, but also were in Pawnee, CallAir, and Air Tractor. Also in many Cubs and Champs and Taylorcraft and Luscombes I trained with. The mechanic just cable anchored them to tubing. Rob, do million dollar turboprops have military belts?

Wasnt addressed to me, however the belts I have seen in factory new caravans, Pilatus and also small to heavy jets are nearly identical to the BAS belts with the rotating buckle, only difference is on the jets there is the crash lever that locks the inertia reel