SREH sizes??

[Jim Spetzman]

Is there a site that has the exact sizes of the many different styles of SREH?? I know of the 1 3/16" high made off of the 3" circle, but there are about 6-8 different styles. Thanks, Jim

[Emil Pampell-Tx]

One of the best ways to make your own model is to make it 1-3/16in tall and 1.9 to 2inches wide. The top should match a 3in circle. Mount that entrance about 1/16in above the floor, and you will have an excellent entrance that you designed.

I really do not know of a place where you can get what you want, maybe someone else can give it to you. I have seen photos of the shapes but have not seen a composite sketch of the sizes.

[John Miller]

http://img.photobucket.com/albums/v200/ ... tant-1.jpg

above shows shapes of common ones, but not sizes.

The standard crescent of course is 1 3/16 tall or 30.0 mm. The original excluder is 30.0 tall, but adds humps for more restriction.then to make entry slighly easier for the martins, the excluder II is 30.5 tall, or about 1 7/32, as is the WDC, but can be made at 1 3/16 for more restriction.

The original clinger was 1 7/32 tall, but they began to tighten it up and reports here say some seem to be 1 3/16...probably something inbetween. An aside, the clinger shape is useful at 1 7/32 tall to cut directly into a natural gourd, unporched. martins will catapult right in, and it's mostly starling resistant, unporched. but you must measure carefully, by inserting a pre-measured no-go gauge.

SREH with humps are patented, but you can try to make some for your own use (I don't charge for legal advice)...but it's hard to precisely measure, so usually best to buy plates. Most patented plates have become available from the PMCA.

This is a source I use for sentra from which cut plates...I can give the web site since it's general supplies...not a martin housing site. (the 2 mm board is fairly easy to cut with a utility knife...)

http://www.foamboardsource.com/sintra-p ... board.html


As Emil always says...height from the floor is equal importance to any of the shapes, in a porched SREH...probably should be flush to no more than 1/8 inch to restrict starlings and admit martins. whew...I'm gonna go look at martins now!

John M

[RC Moser]

I won't make these for you, but I've had good luck with these. Judge for yourself after you see the overlay.


Do you have the ability to make your own srehs? if so I have had good luck with my homeade stealth srehs. Haven't had breech yet when made to correct shape and minimum 32MM tall in center. I and at the northern border of the southern starling and fought with them for 4 years at my location before finding solution and thinning them out.

After several hangup in crescents and WDC's breeched I made my own. as you can see by the picture my design has less space that all factory known srehs. only one that maybe be smaller would be the duely of the wildcat srehs. Hear the link also you can search homemade srehs and see the overlayed over crescents, clinger (modified crescent), WDCs, excluder judge for yourself if you think they may work

Added: You really have to have good set of calipers to acturately measure Factory srehs. Digitial calipers IMO works the best in MM's Most srehs that are breeched are around 30.3, 4 or 5 MM's that I have had problems with I had to recut them to exactly 30.0MM to get them to work and that was as low as I could get them off the porch.

http://i253.photobucket.com/albums/hh57 ... lay001.jpg

[Sam Harris]

I bumped this post to show RCs stealth design.