Schmiegle's Silver Surfer Build
07-18-16, 07:59 PM
#51
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Poo poo my crank and then demand photos...? WTF?! HAHAH! I kid I kid!
Left: Stainless Steel Cups and installed mud guard.
Right: Aluminum Cups.
NOTE: Threading damage and "relatively" poor inner diameter cogs.
Apparently PW revised the design of these cups 15-20 YEARS ago and I didn't catch that upon getting a deal on eBay...
Ya pay for what ya get, I guess?
Left: Stainless Steel Cups and installed mud guard.
Right: Aluminum Cups.
NOTE: Threading damage and "relatively" poor inner diameter cogs.
Apparently PW revised the design of these cups 15-20 YEARS ago and I didn't catch that upon getting a deal on eBay...
Ya pay for what ya get, I guess?
07-18-16, 08:22 PM
#52
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Thread Starter
07-18-16, 08:38 PM
#53
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Haha, deal! Make it two beers and I'll bring you a sensible crankset.
07-18-16, 10:28 PM
#55
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my friend Mary Beth lives in Tulsa. she runs the shop dwelling spaces. I got some of her Oklahoma Bigfoot art tattooed on me last year when I rolled through...!
also, one of the best tattooers alive has a shop there. look him up...Richard Stell...his shop is called pair o' dice.
that's all.
also, one of the best tattooers alive has a shop there. look him up...Richard Stell...his shop is called pair o' dice.
that's all.
07-18-16, 10:36 PM
#56
Senior Member
Thread Starter
Let's just get this out of the way.
ALL LUGS ARE STAYING ON THE FRAME.
As a day to day Engineer, I like to keep the potential utility if I ever to make this a 1:10... ;-)
Question though:
Is there a benefit from having slightly inclined reverse track horizontal (with slight incline) dropout vs a straight horizontal track dropout?
I was thinking it would be naturally chain tensioning to the set spacer I removed (and kept) in the right spot and go!
ALL LUGS ARE STAYING ON THE FRAME.
As a day to day Engineer, I like to keep the potential utility if I ever to make this a 1:10... ;-)
Question though:
Is there a benefit from having slightly inclined reverse track horizontal (with slight incline) dropout vs a straight horizontal track dropout?
I was thinking it would be naturally chain tensioning to the set spacer I removed (and kept) in the right spot and go!
07-18-16, 10:36 PM
#57
Not actually Tmonk
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guess Okies are all the rage these days.
who'd've thunk it!
who'd've thunk it!
__________________
"Your beauty is an aeroplane;
so high, my heart cannot bear the strain." -A.C. Jobim, Triste
"Your beauty is an aeroplane;
so high, my heart cannot bear the strain." -A.C. Jobim, Triste
Likes For TMonk:
07-18-16, 10:39 PM
#58
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also I'm not a frame expert, but I think the inclined, reverse dropouts are to make a geared wheel with an RD easier to exchange, where the track dropouts will always be better for single speed bikes.
right???
right???
__________________
"Your beauty is an aeroplane;
so high, my heart cannot bear the strain." -A.C. Jobim, Triste
"Your beauty is an aeroplane;
so high, my heart cannot bear the strain." -A.C. Jobim, Triste
07-18-16, 10:48 PM
#59
Senior Member
Thread Starter
my friend Mary Beth lives in Tulsa. she runs the shop dwelling spaces. I got some of her Oklahoma Bigfoot art tattooed on me last year when I rolled through...!
also, one of the best tattooers alive has a shop there. look him up...Richard Stell...his shop is called pair o' dice.
that's all.
also, one of the best tattooers alive has a shop there. look him up...Richard Stell...his shop is called pair o' dice.
that's all.
Tell me something bad about Tulsa...
Originally Posted by TMONK
guess Okies are all the rage these days.
07-18-16, 11:02 PM
#60
Senior Member
Thread Starter
On a track where vertical deviation in the road causes no vertical loading at the rear axle, it makes sense to have a bolt preload the axle in the (horizontal) aft direction. But it seems the bumps in the road would provide enough (vertical) loading to set the axle in a far enough aft position to maintain chain tension so long as the set screw spacer assembly is set right. It is set aft of the axle as opposed to a track dropout that has the tensioner bolt set forward of the rear axle. That's my theory at this point though! :-)
07-18-16, 11:39 PM
#61
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hmm.
I've heard people talk about Tusla Tough and Cry Baby Hill. Sounds fun!
I've heard people talk about Tusla Tough and Cry Baby Hill. Sounds fun!
__________________
"Your beauty is an aeroplane;
so high, my heart cannot bear the strain." -A.C. Jobim, Triste
"Your beauty is an aeroplane;
so high, my heart cannot bear the strain." -A.C. Jobim, Triste
07-19-16, 09:16 AM
#62
Calamari Marionette Ph.D
07-19-16, 10:14 AM
#63
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Thread Starter
I will not take this thread Political...
I will not take this thread Political...
I will not take this thread Political...
Tulsa's roads are undergoing a COMPLETE renovation that has needed to be done for 30 years! It appears they're about halfway done, projected complete in 2025...
This is how I feel about the roads here!
https://youtu.be/-L7UAyQ83Yg
07-19-16, 07:10 PM
#64
Gold chains on everything
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07-19-16, 10:33 PM
#65
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Thread Starter
Haha! I truly hope the bike lanes eventually materialize... We do have some cool trails throughout the city though and a new $300M park going in the middle of the city will be a blast to blast through on the way up and down Riverside! Lest we forget about Turkey MTN...
07-19-16, 10:50 PM
#66
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I honestly never thought anyone could be that happy about living in Oklahoma. No offense or anything 
.
You're making me want to visit!
.You're making me want to visit!
__________________
"Your beauty is an aeroplane;
so high, my heart cannot bear the strain." -A.C. Jobim, Triste
"Your beauty is an aeroplane;
so high, my heart cannot bear the strain." -A.C. Jobim, Triste
07-19-16, 10:59 PM
#67
Senior Member
Thread Starter
No offense taken! Our Politics give the state a BAD name. Really, aside from the roads (which really are quickly getting better), Tulsa is super legit!
Come try one of my yoga classes I teach, might get some much needed extension of those hip flexors and quads y'all so respectfully disrespect! :-)
Come try one of my yoga classes I teach, might get some much needed extension of those hip flexors and quads y'all so respectfully disrespect! :-)
07-19-16, 11:03 PM
#69
Senior Member
Thread Starter
I've just gotta say, these Naplex lugs are so ridiculously cool.
I'm an Aerospace Design Engineer and have been day dreaming about how they were made in the 1970s.
I'm an Aerospace Design Engineer and have been day dreaming about how they were made in the 1970s.
07-20-16, 05:27 PM
#72
Senior Member
Thread Starter
WARNING: SCIENCE ALERT
I've been digging around the interweb doing Material Science research. Mainly on the justification behind rework and finish coatings of the Reynolds 531 (R531) frame and fork. The rabbit hole is deep my friends...
As I'm understanding the R531 material is the most superior (to chrome) of every steel tubing comparison I could find for multiple reasons (not really sited within one source). Please do not hesitate to correct, as I am not as up on Material Science as I should be. Might ask for a link/site though.
1. Construction is brazed (don't know the exact filler) and R531 tubing. As compared to it's subsequent replacements, it is at the LOWEST end of the Ultimate Tensile Strength and Hardness Scale. Due to the lower UTS, tubing wall thickness in both the butted and middle sections are thicker than the heat treated 753 frames. As I inspected and blended all discrepancies out, I'm finding nothing deeper than 0.005" in any butted section, 0.003" mid tube, and 0.008-0.010" in the BB housing, so structurally, my Aero repair eye sees it as structurally sound fit, form, & function. The more I work and polish the frame the better the finish gets. I suspect a SOLID polish is coming...!
Does anyone have the Tubing DIAs and wall Thicknesses for a R531 PX10?
2. On to the Material Processes and Procedures (MPP) front, chemical etch (clean with acid) and penetrant inspect, and plating certain steels can cause hydrogen embrittlement. According to ASM2759/9D, 180+ ksi UTS and greater than 40 Rockwell hardness steels are at highest risk of hydrogen embrittlement when electroplating. After DIGGING and DIGGING and DIGGING, I found a couple of AWESOME articles, written in 1983 about The Metallurgy of Brazing (of R531). They test and provide actual UTS allowables of both the lugged brazed assemblies through different heating scenarios. Plus they give the original R531 UTS (121ksi) and Hardness (200-300 DPH or 20 - 30 Rockwell)! HUGE find! By my understanding, baking out the Hydrogen per ASM2759/9D is not necessary but still a wise process decision if I want this to last.
Although there are the cons not melting away brazing upon chemical etch and clean. I haven't found a better candidate than the R531 for chroming.
Maybe another PX10 owner can comment on the "seat of the pants" feeling of the frame? I'm curious if frame has a giving nature as compared to other steel frames. We've already been over Tulsa streets...
Attached are the 3 articles I found on The Metallurgy of Brazing (of R531) written in Bike Tech (1983). Cool stuff!
https://www.dropbox.com/sh/cfkosjewj...UUFWHdyca?dl=0
I've been digging around the interweb doing Material Science research. Mainly on the justification behind rework and finish coatings of the Reynolds 531 (R531) frame and fork. The rabbit hole is deep my friends...
As I'm understanding the R531 material is the most superior (to chrome) of every steel tubing comparison I could find for multiple reasons (not really sited within one source). Please do not hesitate to correct, as I am not as up on Material Science as I should be. Might ask for a link/site though.
1. Construction is brazed (don't know the exact filler) and R531 tubing. As compared to it's subsequent replacements, it is at the LOWEST end of the Ultimate Tensile Strength and Hardness Scale. Due to the lower UTS, tubing wall thickness in both the butted and middle sections are thicker than the heat treated 753 frames. As I inspected and blended all discrepancies out, I'm finding nothing deeper than 0.005" in any butted section, 0.003" mid tube, and 0.008-0.010" in the BB housing, so structurally, my Aero repair eye sees it as structurally sound fit, form, & function. The more I work and polish the frame the better the finish gets. I suspect a SOLID polish is coming...!
Does anyone have the Tubing DIAs and wall Thicknesses for a R531 PX10?
2. On to the Material Processes and Procedures (MPP) front, chemical etch (clean with acid) and penetrant inspect, and plating certain steels can cause hydrogen embrittlement. According to ASM2759/9D, 180+ ksi UTS and greater than 40 Rockwell hardness steels are at highest risk of hydrogen embrittlement when electroplating. After DIGGING and DIGGING and DIGGING, I found a couple of AWESOME articles, written in 1983 about The Metallurgy of Brazing (of R531). They test and provide actual UTS allowables of both the lugged brazed assemblies through different heating scenarios. Plus they give the original R531 UTS (121ksi) and Hardness (200-300 DPH or 20 - 30 Rockwell)! HUGE find! By my understanding, baking out the Hydrogen per ASM2759/9D is not necessary but still a wise process decision if I want this to last.
Although there are the cons not melting away brazing upon chemical etch and clean. I haven't found a better candidate than the R531 for chroming.
Maybe another PX10 owner can comment on the "seat of the pants" feeling of the frame? I'm curious if frame has a giving nature as compared to other steel frames. We've already been over Tulsa streets...
Attached are the 3 articles I found on The Metallurgy of Brazing (of R531) written in Bike Tech (1983). Cool stuff!
https://www.dropbox.com/sh/cfkosjewj...UUFWHdyca?dl=0
07-20-16, 09:02 PM
#73
- Soli Deo Gloria -
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There is a guy in the road bike forum with screen name @Scooper. Seems to know a lot about tubes and metals, knows people in the industry. Very knowledgeable.
Maybe post a general question over there. He is probably someone you can talk to.
-Tim-
Maybe post a general question over there. He is probably someone you can talk to.
-Tim-
Last edited by TimothyH; 07-20-16 at 09:05 PM.
07-21-16, 07:48 AM
#74
Senior Member
Thread Starter
There is a guy in the road bike forum with screen name @Scooper. Seems to know a lot about tubes and metals, knows people in the industry. Very knowledgeable.
Maybe post a general question over there. He is probably someone you can talk to.
-Tim-
Maybe post a general question over there. He is probably someone you can talk to.
-Tim-
07-21-16, 08:50 AM
#75
Calamari Marionette Ph.D
Too many chemicals and volts for my brain https://www.bikeforums.net/classic-vi...arts-home.html
