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Twin top tubes for a mixte

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Twin top tubes for a mixte

Old 09-08-14, 03:27 PM
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seankanary
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Twin top tubes for a mixte

Good afternoon gents, I'm planning a mixte build for my wife and wanted to make sure I was on the right track regarding the twin top tubes. I have 1/2" .035 but it feels pretty flexy. Is that sufficient for this type of build? Cassave used it on his build (sticky thread at the top) but I just want to make sure it's strong enough. She weighs around 115 and will likely have our son up front in the kiddy seat.
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Old 09-08-14, 10:58 PM
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ksisler
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Originally Posted by seankanary View Post
Good afternoon gents, I'm planning a mixte build for my wife and wanted to make sure I was on the right track regarding the twin top tubes. I have 1/2" .035 but it feels pretty flexy. Is that sufficient for this type of build? Cassave used it on his build (sticky thread at the top) but I just want to make sure it's strong enough. She weighs around 115 and will likely have our son up front in the kiddy seat.
OP; Put in a couple of braces or bridges to add some muscle to it. 1/2" 0.035 would be ok for a small frame. If the frame is in the middle to taller sizes, I would use 5/8" and .049 or something like that.
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Old 09-09-14, 05:57 AM
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seankanary
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Originally Posted by ksisler View Post
OP; Put in a couple of braces or bridges to add some muscle to it. 1/2" 0.035 would be ok for a small frame. If the frame is in the middle to taller sizes, I would use 5/8" and .049 or something like that.
Great, thanks ksisler. I'd rather move up the diameter a bit to stay on the safe side.
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Old 09-09-14, 06:09 AM
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unterhausen
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My thought about step through frames is that putting a large tube in as a top tube and then having an extra set of stays is the best way to go. The double top tube design is not that great
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