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  1. #1
    Join Date
    Jun 2010
    Location
    Columbia, Missouri
    Posts
    47

    Default Upper/ top entrance design -- Korschgen

    Frequently there is discussion about upper/top hive entrances and their benefits on this forum (and now detailed in Michael Bush’s book on page 329). Last summer I converted my nine hives to upper entrances and finally had a decent honey harvest from my older hives.

    I built upper entrances with a landing board that can quickly be placed between the hive bodies and the supers -- I do not use queen excluders. During the process of coming up with a design I looked at several of Joe Clemens designs (boy do I appreciate his CAD expertise!), the Imirie shim, and in the bee supply catalogs for options. My design is different than most that I have seen. It is constructed from 5 pieces of wood per the attached graphic. I make the opening about 20” in length, slightly longer than the standard 19 7/8” hive box, so that it fits easily on the hive box and there is a crack for a rain gutter on the front edge. As long as the two long shims are cut from good wood the frame is very sturdy.

    Contact me if you have questions or need additional information.

    Carl Korschgen
    carlkorsch@a0l.com
    573-819-8516


  2. #2
    Join Date
    Dec 2002
    Location
    Denver, Colorado
    Posts
    5,079

    Default Re: Upper/ top entrance design -- Korschgen

    That's almost exactly the 'Parker Shim' I came up with 9 years ago. The main difference is mine has no back support.

    http://parkerfarms.biz/equipment.htm...ized_Equipment

    How have you liked it? I started using mine upside down to form an 'awning' rather than a landing board. Works great for snow and gives a good place for bearding. http://parkerfarms.biz/equipment.html#The_Parker_Shim
    Solomon Parker, Parker Farms, ParkerFarms.biz
    11 Years Treatment-Free, ~25 Colony Baseline

  3. #3
    Join Date
    Oct 2011
    Location
    Edmonton, Alberta, Canada
    Posts
    648

    Default Re: Upper/ top entrance design -- Korschgen

    Has anyone tried placing a full width entrance above the two deep broods? And say bee space between the frames is maintained by using a deep super shortened. Another way would be to place a 3/8 round piece of plywood on top of frames(queen excluder of sorts) of top brood frames that fits inside of entrance shim?

  4. #4
    Join Date
    Apr 2011
    Location
    medina, NY
    Posts
    129

    Default Re: Upper/ top entrance design -- Korschgen

    This is the upper entrance I use, it is the same dimension as a super/hive body, except it is short, 1/2 or so. I made new ones that are right around half inch. I have not had any of the hives try to fill in under the lid, but when i open the lid there is always a big cluster of bees sitting there. The hives with the top entrance(5) out produced the bottom entrance hives(5) in honey produced, so all my hive will have top entrances this year. But i am going to try/experiment with several top entrances like shown on M. Bush's site.(shims)

    upper entrance.jpg

  5. #5
    Join Date
    Dec 2002
    Location
    Denver, Colorado
    Posts
    5,079

    Default Re: Upper/ top entrance design -- Korschgen

    That looks like a thicker version of the Imrie Shim.
    Solomon Parker, Parker Farms, ParkerFarms.biz
    11 Years Treatment-Free, ~25 Colony Baseline

  6. #6
    Join Date
    Feb 2012
    Location
    San Jose, Ca
    Posts
    372

    Default Re: Upper/ top entrance design -- Korschgen

    That looks great. I was looking for an easy to build little addon that they could land on and go in. Like others have said, if the hive gets 5-6 boxes tall then they have to crawl through all that and time is honey.

    Thanks

  7. #7
    Join Date
    May 2012
    Location
    Litchfield, CT, USA
    Posts
    430

    Default Re: Upper/ top entrance design -- Korschgen

    Carl, what do you use for a top cover?
    "Someday we will look back and realize someone was right...and conveniently forget we were the ones that were wrong."

  8. #8
    Join Date
    Jan 2012
    Location
    Jefferson County, WA, USA
    Posts
    132

    Default Re: Upper/ top entrance design -- Korschgen

    With an upper entrance like these, do bees build comb on top of the frames up to the migratory cover? I have telescopic covers and have been thinking of trying a few top entrances because of condensation problems. However, I worry that rain entering could be an issue. How about having an entrance shim like this one, then an inner cover, and then a top cover that only had three vertical sides on it with an extra over hang on the front (if that makes any sense)?

  9. #9
    Join Date
    Jan 2012
    Location
    Jefferson County, WA, USA
    Posts
    132

    Default Re: Upper/ top entrance design -- Korschgen

    Or how about instead of a Imrie Shim or 'Parker Shim', a inner cover with an thicker than normal rim that basically has only 3 sides. Similar to a notch inner cover only with a bigger opening. Then the modified cover to sit on top of that.

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