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  #1  
Old 03-09-2021, 09:00 AM
MS1095 MS1095 is offline
 
Join Date: Jun 2016
Location: West Chester, PA
Posts: 124
Default Cowl Hinge Alternatives

Vans is out of the 1/8" Piano hinge. Has anyone used different hinge material around the firewall on the top cowl (RV4) I have some MS20001-6 on hand. The eyelets are smaller than the Vans hinge. The Vans hinge is .125 ID and uses a .090 pin around the curve. The MS200 hinge has .090 ID eyelets.

The MS2001-6 I have is 2in wide as opposed to 1 1/2". I could sheer it down to size if the 2in would be too wide.
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  #2  
Old 03-09-2021, 11:24 AM
lr172 lr172 is offline
 
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Location: Schaumburg, IL
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Default

I would not. Even the bigger stuff get broken eyelets at times. You can buy the stuff at Spruce.
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  #3  
Old 03-09-2021, 11:54 AM
MS1095 MS1095 is offline
 
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Default

Can't seem to find at spruce. Do you have a part # ?
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  #4  
Old 03-09-2021, 11:57 AM
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pazmanyflyer pazmanyflyer is offline
 
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Default

Quote:
Originally Posted by MS1095 View Post
Can't seem to find at spruce. Do you have a part # ?
https://www.aircraftspruce.com/catal...pianohinge.php
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  #5  
Old 03-09-2021, 12:02 PM
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bjdecker bjdecker is offline
 
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Default

How much do you need?

PM me and we can make arrangements.

B
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  #6  
Old 03-09-2021, 03:23 PM
sjhurlbut sjhurlbut is offline
 
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Default extruded

Get the extruded type - much better. MS20001.
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  #7  
Old 03-09-2021, 07:30 PM
FinnFlyer FinnFlyer is offline
 
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The reason you need 1/8" hinge is that the 0.090 pin will not fit in 0.090 hinge due to the curvature.

Now, it's possible that you could use 0.090 hinge if you can find a thinner pin, but I suspect a thinner pin would bend (kink) too easily.

Finn
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  #8  
Old 03-09-2021, 08:06 PM
MS1095 MS1095 is offline
 
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Quote:
Originally Posted by pazmanyflyer View Post
Not the same stuff Vans sells for the cowl.
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  #9  
Old 03-11-2021, 05:06 AM
fixnflyguy fixnflyguy is offline
 
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Default A couple additional things

Matt,
Are you building or replacing on a currently flying aircraft? That particular hinge requires some additional massaging rather than just bending and drilling it up. The eyelets (firewall side and cowling side)must all be angle chamfered to prevent binding when curved, and its easiest to do before you bend it. The ability to get the pins in/out will be directly proportional to the attention to detail on the eyelet preparation.
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  #10  
Old 03-11-2021, 06:01 AM
MS1095 MS1095 is offline
 
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Quote:
Originally Posted by fixnflyguy View Post
Matt,
Are you building or replacing on a currently flying aircraft? That particular hinge requires some additional massaging rather than just bending and drilling it up. The eyelets (firewall side and cowling side)must all be angle chamfered to prevent binding when curved, and its easiest to do before you bend it. The ability to get the pins in/out will be directly proportional to the attention to detail on the eyelet preparation.
Bill,

I am building new. I think I found the hinge at McMaster. I should know when it arrives today.

Can you describe in a bit more detail, or post pics of what you did on yours.
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