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View Full Version : Entrance Size/Type & ventelation questions



tommalia
04-28-2009, 10:07 AM
As I said in a different post, I'm trying out a TBH for the first time with a home built design.

The hive is is about 20 inches across at the top, it's about 16.5 inches deep and at the bottom it's about 16 inches wide. It's a closed bottom, not a screened bottom. It's just under 4 feet long and I've got a follower board I plan to use to regulate the actual amount of space allocated to the bees.

Currently for an entrance I've got 5 1/2 inch holes drilled right at floor level on one end if the hive. I didn't put a landing board on, though it would be easy enough to attach one if people think they are beneficial.

With this limited entrance configuration, I figured they'd have an easy time defending the hive but I'm afraid they've got no real means to fan the hive if they need to cool it.

Any recommendations on whether this is sufficient, correct, etc?

Also, I'm a little concerned about ventilation. Currently, the lid I built is a telescoping fit (like an Lang). The top bars are pretty much exactly the same thickness as the distance from the side walls to the top of the end boards of the hive. So basically the lid fits down right on top of the top bars; no space between.

So, my concern is, I haven't left any place for any air flow.

Do I need to worry about air flow? If so, what I thought I could do is just prop the lip up at the back end a half inch or so and maybe stick some toothpick spacers between the top bars to allow a little air flow between each bar but not enough space to either allow the bees to get through or to encourage them to seal it up?


:s

Can you tell I'm very anxious about all this?

Oh, I don't know if it helps but I'm located in northern Maryland USA. The summers can get fairly hot (i.e. mid to high 90's F. for several days at a time is normal in mid to late summer) winters are relatively mild.

Where I am, the honey flow is basically limited to a few weeks during the tulip poppler(sp?) bloom.



Thanks in advance,
Tom Malia

ottawabee
04-28-2009, 10:40 AM
I put screen covered holes in the bottom of my tbh to provide ventilation, similar in size to the top cover ventilation of a regular lang hive, over which a telescoping cover would be propped up. I have used similar entrances in the side of my first tbh experiments.

kaisfate
04-28-2009, 11:21 AM
I had a discussion about this the other day...something that would be a real benefit is allowing air to flow across the top-bars...but making sure the sun is not beating down directly on the top bars.

I have seen TBH in Arizona and other temperate climates in full sun...the bees are amazing in the ability to cool a hive.

Of course, I really have very little experience to go on, but just my $.02

LenInNorCal
04-29-2009, 03:16 PM
I know Langstroth folks that simply prop the top or set it
askew on hot days. Got to watch for robbing. Your idea sounds pretty reasonable...except for those darn ants! But then you'd close them up later in the evening, yes?

tommalia
04-29-2009, 04:57 PM
Maybe the ant problem is a regional issue.

With the two Lang hives that I and my cohort had at this location the last year, neither of us had ant problems at all and the hives were sitting just on cinder blocks with screen bottoms.

There was one exception to that. My hive which was healthy by late last year, for some reason died off this spring. About a week after the last few bees dies off, the hive did get invaded by a LOT of ants because I was away and couldn't get to the hive to retrieve the substantial amount of honey the colony had left behind.

I'll keep an eye out for ants though. Perhaps they are more of a problem with TBH's than Lang's for some reason?