Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Classic & Vintage This forum is to discuss the many aspects of classic and vintage bicycles, including musclebikes, lightweights, middleweights, hi-wheelers, bone-shakers, safety bikes and much more.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 12-30-06, 03:25 PM   #1
phoebeisis
New Orleans
Thread Starter
 
Join Date: Jan 2006
Bikes:
Posts: 2,592
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Does 853 Reynolds come in different thicknesses?

Does Reynolds 853 come in different thicknesses like 531 did? I'm curious because I had a 853 MTB frame, and it wasn't particularly light, in fact I'm pretty sure it was heavier than my 20.5 inch 531 SL frame despite the 531 having much longer tubes. It was a 13" with an actual C-C seatpost of 11.5"-a tiny frame that weighed ~2600 grams without a fork-a 2001 Dragon(their current published weights are much less now).A good steel road fork would be about 650 grams,I think,so it would be 3250 grams-7lbs plus.
Thanks,
Charlie
phoebeisis is offline   Reply With Quote
Old 12-30-06, 07:54 PM   #2
Scooper
Decrepit Member
 
Scooper's Avatar
 
Join Date: Aug 2005
Location: San Francisco California
Bikes: Waterford 953 RS-22
Posts: 10,138
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 43 Post(s)
Quote:
Originally Posted by phoebeisis
Does Reynolds 853 come in different thicknesses like 531 did?
Yes. Attached is the Reynolds "Part List" with the dimensions, shapes, and wall thicknesses of various 853 tubes.
Attached Files
File Type: pdf Reynolds Part List.pdf (82.8 KB, 18 views)
__________________
- Stan
I'm with her.
Scooper is offline   Reply With Quote
Old 12-30-06, 08:31 PM   #3
phoebeisis
New Orleans
Thread Starter
 
Join Date: Jan 2006
Bikes:
Posts: 2,592
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Thanks!

Thanks! I wonder how much lighter an 853 can be vs a 531-1/4 lb maybe?
Thanks,
Charlie
phoebeisis is offline   Reply With Quote
Old 12-30-06, 09:01 PM   #4
Scooper
Decrepit Member
 
Scooper's Avatar
 
Join Date: Aug 2005
Location: San Francisco California
Bikes: Waterford 953 RS-22
Posts: 10,138
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 43 Post(s)
Quote:
Originally Posted by phoebeisis
Thanks! I wonder how much lighter an 853 can be vs a 531-1/4 lb maybe?
Thanks,
Charlie
Charlie, I can't answer that, but maybe someone in the framebuilders forum can. What I can say is that for a given frame size and geometery using the same diameter tubes, 853 can be lighter since it's stronger and stiffer than 531 and can therefore have thinner walls for a given strength and stiffness.

Here's a chart from the Reynolds website showing the relative strength (MPa) and stiffness (GPa) of various Reynolds tubing materials. Although it doesn't show 531, it does show 631 which is just slightly stronger than 531. I would think you could save significantly more than a quarter pound in frame weight by using 853 instead of 531 on an average size (say, 56 - 58 cm) frame.

__________________
- Stan
I'm with her.
Scooper is offline   Reply With Quote
Old 12-30-06, 09:44 PM   #5
Nessism
Senior Member
 
Nessism's Avatar
 
Join Date: Jun 2004
Location: Torrance, CA
Bikes: Homebuilt steel
Posts: 2,332
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Scooper
Charlie, I can't answer that, but maybe someone in the framebuilders forum can. What I can say is that for a given frame size and geometery using the same diameter tubes, 853 can be lighter since it's stronger and stiffer than 531 and can therefore have thinner walls for a given strength and stiffness.
The steel in 853 is not stiffer than the steel in 531, in fact, the stiffness of all steels is pretty much the same. 853 is stronger so the tubes can be made thinner thus saving weight. When the tubes are made thinner they are made more flexable so Reynolds increases the diameter to get back the stiffness.

Overall, my guess is that a 853 frame will be about 1/4 to 1/3 lbs. lighter than a 531 frame.
__________________
Becareful buying/selling bike parts on-line. I learned the hard way. :(

Good/Bad Trader Listing
Nessism is offline   Reply With Quote
Old 12-30-06, 11:33 PM   #6
Scooper
Decrepit Member
 
Scooper's Avatar
 
Join Date: Aug 2005
Location: San Francisco California
Bikes: Waterford 953 RS-22
Posts: 10,138
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 43 Post(s)
Yep. Nessism is correct; my bad. The stiffness of all steels is pretty much the same at 207 GPa. Don't know what I was thinking.
__________________
- Stan
I'm with her.
Scooper is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 10:01 PM.