Chainring guards (bashguard?)
05-04-18 | 01:51 PM
#1
Thread Starter
Fillet-Brazed Member
Joined: Sep 2015
Posts: 488
Likes: 21
From: Brooklyn, New York
Bikes: ⊕
Chainring guards (bashguard?)
I've come to really like the chainring guard on my Schwinn Sports Tourer with Spécialités T.A. Cyclotouriste Pro 5 Vis crankset and am wondering,
where I can find something similar for other bikes, I'd like something for 130 BCD and 54T (a Shimano 600), that uses the existing bolt holes.
The T.A. seems to have special holes for the guard and chainring separator.
where I can find something similar for other bikes, I'd like something for 130 BCD and 54T (a Shimano 600), that uses the existing bolt holes.
The T.A. seems to have special holes for the guard and chainring separator.
05-04-18 | 04:48 PM
#3
Senior Member
Joined: Nov 2014
Posts: 27,576
Likes: 5,455
From: Eugene, Oregon, USA
There is a company that sells a bunch of styles:
https://bbgbashguard.com/
An option would be to cut your own out of a chainring that was a couple sizes oversized, but for a 54T, that would mean a pretty large ring. Let's see, with the circumference being pi*D, to increase the diameter by about an inch, I think one would have to increase the diameter by 3.14 inches, or about 6 or 7 teeth, so your donor ring would have to be at least a 60T, if not larger.
https://bbgbashguard.com/
An option would be to cut your own out of a chainring that was a couple sizes oversized, but for a 54T, that would mean a pretty large ring. Let's see, with the circumference being pi*D, to increase the diameter by about an inch, I think one would have to increase the diameter by 3.14 inches, or about 6 or 7 teeth, so your donor ring would have to be at least a 60T, if not larger.
05-04-18 | 05:00 PM
#4
Bikes are okay, I guess.
Joined: Jan 2015
Posts: 8,006
Likes: 3,777
From: Richmond, Virginia
Bikes: Waterford Paramount Touring, Raleigh Sports 3-speeds in M23 & L23, Schwinn Cimarron oddball build, Marin Palisades Trail dropbar conversion, Nishiki Cresta GT, Jeunet mixte
RockRing was a popular brand in the '90s but I don't think they ever made one for the 130 BCD.
05-05-18 | 07:07 AM
#5
feros ferio
Joined: Jul 2000
Posts: 22,398
Likes: 1,865
From: www.ci.encinitas.ca.us
Bikes: 1959 Capo Modell Campagnolo; 1960 Capo Sieger (2); 1962 Carlton Franco Suisse; 1970 Peugeot UO-8; 1982 Bianchi Campione d'Italia; 1988 Schwinn Project KOM-10;
Slightly off topic, but I have always liked the look of TA cranks. 
__________________
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
05-05-18 | 06:26 PM
#6
Bianchi Goddess
Joined: Apr 2009
Posts: 28,907
Likes: 4,151
From: Shady Pines Retirement Fort Wayne, In
Bikes: Too many to list here check my signature.
Isn't that a chainguard to keep your bellbottoms out of the chain? For 130 you mau need to make one out of an old 54T ring.
__________________
One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
05-05-18 | 08:47 PM
#7
Senior Member
Joined: Apr 2011
Posts: 2,347
Likes: 21
Bikes: Fillet-brazed Schwinns
Those are not "bash guards" they are chain guards that acted as pants protectors. Schwinn started putting them on 5 and 10-speed "lightweights" in 1967 so that your pant cuffs wouldn't be caught between the chain and outer chainring even if you didn't use pants clips. The one year only '68 S/S Tourer had a triple front TA crankset that didn't use a chain guard, however when Schwinn re-introduced that bike in '71 as the Sports Tourer they had both of the crankset suppliers (TA and Nervar) include chain guards (i.e. pants protectors). They were eventually removed in '76 when the Sports Tourer was re-introduced as the Superior.
05-05-18 | 11:47 PM
#8
Senior Member
Joined: Nov 2015
Posts: 4,900
Likes: 1,125
I think their function is more like a "pants guard" than a "bash guard" as these were mostly used on road bikes. Actually very practical on bikes used for daily commuting as you did not have to cinch up your pants leg eith your sock or a Velcro strap to ride your bike.....
05-06-18 | 08:39 AM
#9
Phyllo-buster
Joined: Jan 2010
Posts: 9,266
Likes: 2,692
From: Nova Scotia
Bikes: roadsters, club bikes, fixed and classic
I think TA considered them to be bash guards as they were paired up with cyclocross specific rings.
Thread
Thread Starter
Forum
Replies
Last Post
JiveTurkey
Bicycle Mechanics
7
02-14-12 01:50 PM
Jowdy
Bicycle Mechanics
7
07-06-10 01:23 PM
