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Old 08-28-07, 09:13 PM   #1
noahjz
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mystery plastic piece screwed into BB shell

I recently bought a frame and I was wondering if anyone knew what this plastic piece is all about...



thanks!
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Old 08-28-07, 09:14 PM   #2
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its the cable guide for your front and rear derailleurs
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Old 08-28-07, 09:16 PM   #3
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that is where you route the cables for the front and rear derailleurs from the downtube shifter braze-ons.
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Old 08-28-07, 09:21 PM   #4
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If the screw that holds in in place is too long, it can mess with the BB installation.
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Old 08-28-07, 09:37 PM   #5
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I guess I should have been able to figure that out

Anyhow my follow up question is, since I plan on building this frame up into a single speed is it ok to remove the plastic guide? Would I be able to find something to plug the hole up?
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Old 08-28-07, 09:40 PM   #6
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Quote:
Originally Posted by noahjz View Post
I guess I should have been able to figure that out

Anyhow my follow up question is, since I plan on building this frame up into a single speed is it ok to remove the plastic guide? Would I be able to find something to plug the hole up?
It's not necessary to plug the hole. In fact, some people drill a hole there to allow any water that gets into the frame to drain out.
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Old 08-28-07, 11:58 PM   #7
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I plan on building this frame up into a single speed is it ok to remove the plastic guide?
Yes.
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Old 08-29-07, 12:07 AM   #8
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I recently bought a frame and I was wondering if anyone knew what this plastic piece is all about...



thanks!
is that the nashbar reynolds steel frame
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Old 08-29-07, 06:28 AM   #9
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It's not necessary to plug the hole. In fact, some people drill a hole there to allow any water that gets into the frame to drain out.
Then you are left with the age old question, is it better to try to seal it or to have a place where water can get out and in.
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Old 08-29-07, 07:16 AM   #10
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Then you are left with the age old question, is it better to try to seal it or to have a place where water can get out and in.
Well if the water can get in, it can certainly get out now without the hole plugged.
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Old 08-29-07, 08:13 AM   #11
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And gravity's gonna insure that it does just that. I vote for leaving the hole.
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Old 08-29-07, 07:25 PM   #12
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Getting back to the Nashbar question, it sure looks like the signature frame, but the site says it has top tube cable routing. I'm confused. And obviously have too much time.
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Old 09-03-07, 06:50 PM   #13
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it's a soma fabrications "smoothy"
their newer ones don't seem to come in this orange color, i don't know what year it's from

i am a bit unsure of the steel, the decal is mysteriously painted over. anyone want to take a guess what this says? the guy i got it from said reynolds 853, but it sure is hard to read...
what are the relative values of the reynolds steel grades? what do those numbers refer to anyways?

thanks for the help






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is that the nashbar reynolds steel frame
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Old 09-03-07, 07:03 PM   #14
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Its 853.

and leave the hole. Water mysteriously enters the frame from every nook and cranny (seatpost, headset) and its good to have a drain.

I've seen many destroyed bottom brackets because there was no drain hole in the BB shell (more often on mountain bikes since they usually dont use under shell cable routing)
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