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Long Shen Lugs with Columbus Tubing

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Long Shen Lugs with Columbus Tubing

Old 04-18-20, 05:24 PM
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TiHabanero
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Long Shen Lugs with Columbus Tubing

In about a week the frame I have been putzing around with since January will be finished. This is my forth frame, but the first one not using Henry James lugs and True Temper tubing. My experience with Long Shen lugs and Columbus Life and SL tubing was very different from HJ lugs with TT tubing.

HJ lugs fit very nicely with TT tubing leaving just enough gap to sneak silver filler in. They also had more meat on them which proved useful when adjusting for frame angles. LS lugs and Columbus tubing was not as nicely matched. The gaps were noticeably bigger and required brass filler instead of silver. The lugs are beautifully thin, but chose not to grind them out to make adjustments for frame angles in fear of getting them too thin and grinding through or weakening the lug itself.

Something I read written in an article by Grant Peterson about 20 years ago came back to me this week. He stated HJ lugs and TT tubing were a good match for beginner builders. I understand why he said that, but also know that very experienced builders used that lug/tubing combo as well. My guess is the quality match between the two saved them a lot of work.
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Old 04-18-20, 09:07 PM
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Andrew R Stewart 
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Other more experienced builders might have more understanding about your comments but I'll speculate anyway. I suspect that the fit issues were due to the LS lugs. It's possible that they are designed for brass and production settings where tolerances are generally looser.

BTW congrats on the near completion of your 4th. Addictive isn't it. Andy.
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Old 04-20-20, 07:10 PM
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TiHabanero
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Sure is addictive. Although I told my wife this is the last one, I am already thinking about what to build next. I have too much fun coming up with the design and putting it together to just give it up. Trouble I have now is there are simply too many frames! Seriously this needs to end.
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Old 04-21-20, 09:12 AM
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Originally Posted by TiHabanero View Post
Sure is addictive. Although I told my wife this is the last one, I am already thinking about what to build next. I have too much fun coming up with the design and putting it together to just give it up. Trouble I have now is there are simply too many frames! Seriously this needs to end.

Haha! I said the same thing to my wife about 10 frames back. I've got about a dozen designs that I'd love to build as well just to build them. We are sitting right next to each other in the boat my friend.
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Old 04-23-20, 04:46 PM
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I’ve got the main triangle done on my first frame and am already super hooked. Ive already picked up surplus lugs and tubing from builders to stock up for more builds. I already have a lot of bikes so I’m just going to start building for my friends. I’m hoping to use their input to help dial in geometry and ride quality. It’s just going to be a hobby for me but like when I started home brewing beer, while I’m figuring out hopping rates and yeast pitching and temperature control my friends get the results.
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Old 04-24-20, 08:38 AM
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Long Shen makes all kinds of different lugs, including (as far as I know) those for Sach's, Llewellyn, and Pacenti. I'd caution against generalizing regarding fit and internal clearance.
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Old 04-24-20, 09:38 AM
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other than the lugs they make for others, I'm pretty sure I have used some LS lugs and never seen any that were particularly loose.
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Old 04-25-20, 03:10 AM
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For sure these things were very loose fitting. The HJ lugs and TT tubes always fit nicely with minimal clearance. The LS lugs with Columbus tubbing were very sloppy in comparison. Easily could move the tubes in the BB shell 2 degrees without needing to manipulate the lug. Same with the other lugs except for the seat tube lug. For some reason that fit more closely to the tubes. Anyway, the frame is done and painted, just waiting to clear coat. Hoping to see if the over sized down tube makes any difference in frame stiffness. I suspect it will not be noticeable when riding.
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