BCP Boys
Well Known Member
I have read several posts about this already but couldn't find exactly what I'm looking for -
I need to replace my hinges on my lower cowl at the firewall (bottom ones next to the exhaust, not on the sides). I ordered what I thought would be the correct size from A/C Spruce but obviously I was wrong. So I decided to take one of the hinges off, take a buddy's RV-10 down to Spruce yesterday (great excuse to fly the -10 ) and get them to match it while I was there. Well after bringing out what seemed to be every hinge they had I left there without new hinges. The common theme was that the hinge pin was the same size on all the MS parts but the surface sizes were different (well at least this is what the nice ladies said behind the counter). The other difference that I noticed is that all of the M/S hinges were the nice extruded ones but my hinges for the bottom are not the good extruded hinges, they are open end and probably why some have broken off. But they are a much large pin hole.
So I figured looked on Vans this morning and now I'm confused even more.
For those who have built their -7, do you remember if the plans called for a heavier/larger hinge or was this something that each builder did differently. I found in a couple of post that some of the RV-8 builders had used MS20001. I'm not sure which size or even how this is sized. What should I be measuring?
My plane is 12 years old with just over a 1000 hours so going back to the builder and asking him may be a much tougher task than just figuring this our myself.
BTW, i'm not interested in replacing it with fasteners. I love the clean hinge look and want to stay with that. Plus the hinges that riveted to the plane/firewall are not broken, just the ones on the cowling so I'm only going to replace that half hence the reason I'm trying to get an exact match.
Thanks in advance for your help
I need to replace my hinges on my lower cowl at the firewall (bottom ones next to the exhaust, not on the sides). I ordered what I thought would be the correct size from A/C Spruce but obviously I was wrong. So I decided to take one of the hinges off, take a buddy's RV-10 down to Spruce yesterday (great excuse to fly the -10 ) and get them to match it while I was there. Well after bringing out what seemed to be every hinge they had I left there without new hinges. The common theme was that the hinge pin was the same size on all the MS parts but the surface sizes were different (well at least this is what the nice ladies said behind the counter). The other difference that I noticed is that all of the M/S hinges were the nice extruded ones but my hinges for the bottom are not the good extruded hinges, they are open end and probably why some have broken off. But they are a much large pin hole.
So I figured looked on Vans this morning and now I'm confused even more.
For those who have built their -7, do you remember if the plans called for a heavier/larger hinge or was this something that each builder did differently. I found in a couple of post that some of the RV-8 builders had used MS20001. I'm not sure which size or even how this is sized. What should I be measuring?
My plane is 12 years old with just over a 1000 hours so going back to the builder and asking him may be a much tougher task than just figuring this our myself.
BTW, i'm not interested in replacing it with fasteners. I love the clean hinge look and want to stay with that. Plus the hinges that riveted to the plane/firewall are not broken, just the ones on the cowling so I'm only going to replace that half hence the reason I'm trying to get an exact match.
Thanks in advance for your help