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Abrasion strips
Posted: Sat Sep 25, 2010 3:13 am
by voorheesh
My 170A has black rubber abrasion strips (estimate 1/16" thick) on the leading edge of the horizontal stabilizers. They have been there since I have owned the airplane (8+ years). I fly off a dirt strip frequently and I think they help keep the leading edge from dings so I want to keep them. Anyone else have these? Anyone know of a basis of approval if that becomes an issue? Thanks for any feedback.
Re: Abrasion strips
Posted: Sat Sep 25, 2010 6:59 am
by n2582d
Accessory Kit 52-3-551 dated 9-9-55 is for abrasion boots on the C-170A. It calls for p/n 0332136-3. I think this has since been superseded to p/n S1938-3-68.00.
Item 59 on the C-170B is p/n 0332136-4.
Abrasion Strip.jpg
Alternatively, some time ago I wrote the following:
n2582d wrote:Cessna Accessory Kit AK175-35V dated Feb. 4, 1976 called for abrasion boot p/n S1938-1-67.00. It is for all models of the C-170. I couldn't find this p/n online. The closest I found was p/n 1938-
3-67-00 which has been superseded to p/n S1938-3-68.00
Concerning this p/n
http://www.iwantcessnaparts.com says, "use on tailgear equipped aircraft only (180, 185, &188) other models use 1232040-3" Don't know if this would work on the 170 curved leading edge.
Accessory Kit AK182-217J dated March 11, 1985 also covers the C-170 series. It calls for p/n 1232040-3. This has been superseded by 1232040-5 -- $44.61 each at Iwantcessnaparts.com.
Also p/n 0332127 and 0332128 or 0332128-1 for C-195 may fit. See
http://www.the195factory.com/ or contact Bill Milton at 518-882-6392.
Re: Abrasion strips
Posted: Sat Sep 25, 2010 12:56 pm
by W.J.Langholz
You may also want to check with
Tanalian Aviation 907 781 2217 in Alaska
Re: Abrasion strips
Posted: Sun Sep 26, 2010 1:58 am
by voorheesh
Thanks guys
Re: Abrasion strips
Posted: Sun Sep 26, 2010 2:38 pm
by busav8or
Does p/n 1232040-5 cover both horizontal stabs or do you need to purchase two of them? The reason I ask is in this installation article,
http://www.apaviation.net/articles.pdf, which mentions purchasing it by the roll.
Thanks,
Joe
delete
Posted: Wed Apr 18, 2012 3:48 pm
by bigrenna
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Re: Abrasion strips
Posted: Wed Apr 18, 2012 4:36 pm
by buzzlatka
I have operated my 170 off gravel and dirt for 7 years and don't have any issues with dings to the horizontal stab. I don't have abrasion boots.
Re: Abrasion strips
Posted: Wed Apr 18, 2012 10:48 pm
by c170b53
Understood, but these look pretty and I'm thinking of them now.
Re: Abrasion strips
Posted: Thu Apr 19, 2012 12:12 am
by FredMa
I believe these are called abrasion strips for a reason. Their main benefit is to prevent paint erosion not prevent dents. If I had to guess, I would bet there are more than a few people that have used them to COVER existing dents.
Re: Abrasion strips
Posted: Thu Apr 19, 2012 1:00 am
by Blue4
Great topic! I have been looking for these since I first encountered gravel ... dents happen, even when you're careful.
Does anyone have a good source for these strips? (Meaning: inexpensive)
Is installation as simple as using some 3M 1300 glue?
And yes, its a cessna part, so is it simply a minor alteration?
Thanks to all in advance. I WILL have these on my airplane before long!
-Scott
Re: Abrasion strips
Posted: Thu Apr 19, 2012 3:08 am
by FredMa
actually it is simpler than using 1300L. You can get a roll of erosion tape from Aircraft Spruce in various widths, clear or black. No 1300L needed, peel and stick.
Re: Abrasion strips
Posted: Thu Apr 19, 2012 12:21 pm
by Bruce Fenstermacher
FredMa wrote:actually it is simpler than using 1300L. You can get a roll of erosion tape from Aircraft Spruce in various widths, clear or black. No 1300L needed, peel and stick.
Is the Spruce erosion tape the same as the Cessna part? What I believe to be the Cessna parts I've seen seem to be a thicker rubber product that may even be molded or extruded to shape.
Re: Abrasion strips
Posted: Fri Apr 20, 2012 1:16 pm
by FredMa
The rolls of erosion tape 3M 8671 (clear) and 3M8672 (black) are the exact same material and thickness as the preformed leading edge guards you buy for most aircraft. Most airlines use the flat tape in place of the preformed guards to save money whenever possible. As long as the curvature of the part is not too drastic it will usually work fine. It would not be used however for the radome due to the amount of curvature. I cannot swear that it is the same as with the 170 cessna kit boot,because I haven't seen one, but that has been the case with every other plane I have worked on and the picture of the preformed cessna boot looks identical to what I am familiar with. Only one way to know for sure.
Re: Abrasion strips
Posted: Fri Apr 20, 2012 5:43 pm
by akclimber
It's not the same thing.
The cessna part is preformed into a V with the apex much thicker than the trailing ends.
You can easily contour it to the leading edge of the horizontal stabilizer.
I was convinced and bought the thicker stuff after hearing an especially loud bang from a rock hitting the horizontal on a gravel strip landing.
Re: Abrasion strips
Posted: Fri Apr 20, 2012 10:54 pm
by FredMa
Thanks for clearing that up. Does anyone know the cost of the cessna boot? I'm sure it isn't cheap. I am only looking for erosion protection so I will probably go with the tape.