Door Stops & Stop latch

How to keep the Cessna 170 flying and airworthy.

Moderators: GAHorn, Karl Towle, Bruce Fenstermacher

User avatar
GAHorn
Posts: 20967
Joined: Fri Apr 12, 2002 8:45 pm

Re: Door Stops & Stop latch

Post by GAHorn »

rnealon1 wrote:
gahorn wrote:Here’s another solution some find useful:
43BC2BEB-D5EA-49AA-BB49-FEE5B9B70C7A.jpeg
Hi George,

This photo is interesting because the catch fitting on the door is exactly like the one on my aircraft door (and apparently not the original fitting?), but the bracket in the photo looks shortened from the original.

I purchased a "new" bracket from Preferred Airparts, but to match the other side I need to add the male fitting on the tip of the bracket. It sounds like this may be a hardware store part?

Thanks,

Bob
Here’s a source: https://www.amazon.com/Alise-CA250-4P-C ... 05&sr=8-24

The “male” portion is cut from it’s base, then a “slot” cut into it with a hacksaw (or reverse the order) and drill a hole thru it and “pin” it with a roll-pin onto the underwing bracket.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
User avatar
TFA170
Posts: 132
Joined: Tue Jan 26, 2016 3:18 am

Re: Door Stops & Stop latch

Post by TFA170 »

I just installed door stewards and they're a great addition....not inexpensive, but not terrible either
User avatar
GAHorn
Posts: 20967
Joined: Fri Apr 12, 2002 8:45 pm

Re: Door Stops & Stop latch

Post by GAHorn »

Here’s a link to a source for the “cabinet” style latches:

https://www.amazon.com/Alise-CA250-4P-C ... WYYDK5EY9W

5D890AA5-3020-4D02-9D49-B3988F486D95.jpeg
5D890AA5-3020-4D02-9D49-B3988F486D95.jpeg (23.52 KiB) Viewed 11585 times
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
User avatar
rnealon1
Posts: 219
Joined: Wed Sep 19, 2018 7:28 pm

Re: Door Stops & Stop latch

Post by rnealon1 »

I ordered a set of these although I got the smaller size, which were still a little bigger than the ones installed on my door. I am using my limited tools to fashion the tip to be installed on the replacement bracket I bought. Still a little reluctant to make a modification to this bracket as it is not easy to find one.

Thanks,

Bob
Bob Nealon

Southbury, CT
User avatar
170C
Posts: 3182
Joined: Tue May 06, 2003 11:59 am

Re: Door Stops & Stop latch

Post by 170C »

Many yrs ago I purchased a set of these called Sky Catch (I think that was the name). They work reasonably well. Much better than the original Cessna ones. However, even thought there is a way to adjust the tension, it will only hold so much. With our planes sitting tail down, gravity works against most any system. The best one ,IMHO, is the Door Stewards. I plan to replace my Sky Catch units with them soon.
OLE POKEY
170C
Director:
2012-2018
User avatar
rnealon1
Posts: 219
Joined: Wed Sep 19, 2018 7:28 pm

Re: Door Stops & Stop latch

Post by rnealon1 »

DaveF wrote:Here's what happens to the fuel tank when the door stop screws are too long. I found this when I pulled the tanks for reseal.
Edit: Or someone ran a tap up through the nut plates.
DoorStopScrewsTooLong.jpg
Thanks for the heads up on this issue. Aircraft in Annual now and discovered this exact situation while replacing the door stop bracket. At least it was caught before the holes were all the way through.

Thanks,

Bob
Bob Nealon

Southbury, CT
User avatar
170C
Posts: 3182
Joined: Tue May 06, 2003 11:59 am

Re: Door Stops & Stop latch

Post by 170C »

I just purchased a set of Door Stewards and plan to install them in the next week or so. I haven't decided for sure whether to remove the under wing fitting or not (I have Sky Catch units now). Chances are I will remove them, but leave the catch on the door as to remove it would involve filling screw holes and painting. From reading other posts I have to wonder if the screws will be too long if put back into their nutplates without the fitting taking up some space. Sure don't want to pierce the fuel tanks.
OLE POKEY
170C
Director:
2012-2018
User avatar
n2582d
Posts: 2808
Joined: Mon Apr 29, 2002 4:58 am

Re: Door Stops & Stop latch

Post by n2582d »

Frank,
I believe your plane, (s/n 28988), should have capped nutplates according to SNL 10-24-57. I wrote about that here. But I would certainly use the depth gauge of a digital caliper - or mark off a toothpick - to check the depth of the nutplate hole and then use a screw at least 1/16" shorter than what you measure.
Gary
User avatar
170C
Posts: 3182
Joined: Tue May 06, 2003 11:59 am

Re: Door Stops & Stop latch

Post by 170C »

Thanks Gary.
OLE POKEY
170C
Director:
2012-2018
User avatar
rnealon1
Posts: 219
Joined: Wed Sep 19, 2018 7:28 pm

Re: Door Stops & Stop latch

Post by rnealon1 »

Below is what was found after removing the left tank to access the nutplates. A broken off tap was still there preventing the fourth bracket screw from being installed. The dings in the tank were caused by the tap rather than the screws. Fortunately the tank was not punctured, and the tank strap was discovered to be loose so it is good we looked in there.

Thank you again for the heads up!

Bob
IMG_23001.jpg
IMG_23011.jpg
Bob Nealon

Southbury, CT
User avatar
DaveF
Posts: 1516
Joined: Sat Nov 03, 2007 1:44 am

Re: Door Stops & Stop latch

Post by DaveF »

That’s pretty clear evidence! The damage to your fuel tank looks just like what I found on one of mine.
User avatar
rnealon1
Posts: 219
Joined: Wed Sep 19, 2018 7:28 pm

Re: Door Stops & Stop latch

Post by rnealon1 »

Yes it is almost identical!
Bob Nealon

Southbury, CT
Post Reply