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More options Apr 29 2005, 3:43 pm
Newsgroups: rec.bicycles.tech
From: [email hidden]
Date: 29 Apr 2005 13:43:18 -0700
Local: Fri, Apr 29 2005 3:43 pm
Subject: DIY CHAIN GUARD $2 PLUS
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Chain guards prolong chain life and riding enjoyment!
These here instruction translated from the N. Korean by blue staters
take two auto hose clamps to fit downtube and poly bottle, ex. gallon
water jug. cut 'Z' shape from the poly with the middle rectangle at
90
degrees to the 'Z' ends.size the outside rectangles at 2" wide by 5"
long and the middle rectangle at 2"x the distance between chainrings
outside and the opposite downtube side.or cut a 'Z' then fiddle with
it
in place. turn the first cutting 90 degrees in your hand and place
the
bottom rectangle before the chainrings' front opposite the front
tire's
rear. the bottom rectangle covers the chainrings front bottom half or
more, the middle rectangle's length crosses over and reaching upwards
covers the downtube, the upper rectangle's length is two inches or to
fit. mount the 'Z' under the upper hose clamp and over the bottom
hose
clamp now an adjuster slid up and under the upper rectangle fit under
the upper hose clamp. the jug's curves form a shape for the third or
fourth cutting attempt.also, a supermarket rubbing alcohol bottle top
with tab mounted on seat tube protects the front deray mechanism. a
1/4
bottle side with the vertical side chainside and larger area opposite
the rear tire's top front mounted at seatstays deflects chain bound
and
front deray bound sand and grit.
The poly bottle shape is one leg over the CR's width
One leg over to the down tube
One leg up the down tube to fit under one clamp
The top shoulder of the gallon poly bottle gives a rear seat stay
mounted grit deflector.
Cut across the bottle horizontally two inches below the top
shoulder's curve as the bottle head upward to the bottle's opening
(where the fluid goes in)
And a parallel cut four inches above the cut just made.
Cut an opening for your rear tire using a template marked off from
the
tire's actual max width side to side ( allowing for the 6mm of wobble
yawl left in there) this here cut going into the center of the piece.
I azzzum there's a metal piece from stay tp stay just above the tire
with a hole in it-mount there using a correctly sized fender washer.
If not a metal connector tube then cut two small rectangles of
whatever
light material you have laying under the bench. Clamp pieces together
and drill small holes inboard the stays plus the guard's hole in the
pieces center and use this piece as a stay mount for the poly guard.
The bottle shoulder poly guard's "legs" point either forward or
rearward depending on the prevailing wind direction in your locale.
This is not as effective as a completely boxed in chain container-
such
a container giving eternal chain life if you want to get off that
wheel
but it takes only a relaxing creative hour and is highly effective
for
extending chain life.
One can then ride for more than 5 miles and still have a freshly
cleaned and lubed chain feel.