Does the shape of bottles matter?

[bendog15]

Long neck vs short neck? Does the shape of the bottle contribute to how much carbonation is produced?
I'm brewing malt extract kits. I use the corn sugar that comes with the kit when I bottle. I have a random assortment of bottles that I clean and sanitize. They are all pop top brown bottles. Most are long neck (just a personal preference) but some are short neck, like a Red Stripe. I use a bottling wand so I leave the same amount of air space in each bottle before I cap, using oxygen barrier bottle caps.
My question is- will each different shaped bottle result in a different level of carbonation?


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[WoodlandBrew]

I have used those same types of bottles and haven't seen a difference. Chemically I don't see how there would be a difference either. The amount of CO2 produced is directly proportional to the amount of sugar given that there is living yeast. It follows the Balling observation.

 

[bobeer]

I agree with woodlandbrew. I've used all different kinds of bottles and all have carb'ed up fine. I would think as long as you leave the proper amount of head space you will not have any issues.

 

[flars]

You will have more headspace in a taller bottle than a short one if you use a spring loaded bottling wand. In the taller bottle the mass of the wand inside the bottle will displace more volume than in a shorter bottle. Will there be a difference in carbonation? There might be difference in carbonation. Can the difference be detected? Probably not.

Using the packet of priming sugar that comes with a kit will produce different carbonation levels. Someone on HBT had weighed these packets and found differences. They were not all 5 ounces. Differences in carbonation level will also occur with different net volumes from the fermentor being bottled.

Best to use a priming sugar calculator and weigh out what you need for the volumes of CO2 you want in a particular beer. I use this calculator for consistency.
http://www.northernbrewer.com/priming-sugar-calculator/