The sun., 1897-12-04
NEWS OF THE WHEEENEN.
a VIEW DESIGN or sPR00KET FOR
NEXT YEARS BI0rCIE.
As.is.seu sr rrstss.,esals % rasnssvvhip :,


Rsichnei Matched % Race Ahe Keats
Another new design OF sprocket. for which
marvellous qualities arc claimed. 10 TO make lite
appearance next week on the 1898 model Of =
wcilknown wheel Tho feAture OF this new
device is the small number Of teeth ON the for
ward sprocket. Tho sprockot Will nave the
usual size relative to tho rear one, ana the gear
therefore, will be the same. It's eight teeth
howovor, will be distributed 90 FAR apart that
the chain will engage with only four OF them
at any one time This idea has been
tried with some apparent success by in
dividuhl riders having mechanical notions OF
their own. As matter OF fact' one or
two teeth do all tho work In the ordinary
sprocket, and the intervening teeth serve Tor
nothing except points for the links OF the chain
to bind against and create friction. when the
chain is disengaging. Any rider whose wheel
has been ridden few hundred miles can satisfy
himself OF tho truth OF this. Let him place q
little pressure on the pedal and haul the top
stretch OF the chain taut, then with the fingers
manipulate the different links which are on tho
sprockot. working them up and down and side
ways. He will readily discover that he can fnd
some play in every ono except the link on the
topmost tooth. That tooth is doing the work
and the others are idlers.
II oil the teeth on which the chain rested at
the time were actually pulling, 1t Is evident the
links would be bearing 90 hard against their
respective teeth that no play could be felt In
them. The reason for this 10 that after being
used awhile tho sprocket teeth and the chain
blocks both become worn and the "pitch" Is
changed With now sprockets and chains which
are accurately cut to "pitch." that 10, cut 80
that the sprocket teeth are precisely one inch
apart, with tho chain links corresponding, this
condition does not exist. When the pitch is
accurate, each tooth and link engaging does Its
. sn,.' e.s.s v. Wv W. n ~ s ~
'oo ie" chaihs anu sprockels are maui as nc
cnrato as they should bo. In this lies one Of tho
p,n.a,. " y, a., ',.',,,.s ..n sa,. 81 a. .,sn
picycies' IL IN uriliinS the hoie In the siue-
which tho rivet nasses n variation oS one.tbon.
80, y, ~ ",'. :. lii o.. 49, ,.'i,
of the chain and cause undue friction. II in
making up chains n number of links are thus
inaccnrote e =. ns,sn ncn,,rs IN a..or,b,;nS thom
ihaecura'e' IL otten occurs IN aSse"iohnR the''
that the short Or long links are brought together
in n single chain. In such n case there in an ac-
cumulated error amounting TO possibly nve or
six one. thousandths of an inch. In fitting over
the tecth these links will bind or else ride loose
~ oetore shipping pack ihto place.
An expert mechanic of this city who has been
decIarss that n ,,,oro .ccmr0t. cutting ~ chain.
and sproekets is one Of the most needed in improve.
monts @ IN wbo.is In b;s sTnerimsn,s ne s.v.
that ho found from one to eight shoussnath.
some OF tn. oosanown makers This This he claims, Inns
of drauRht through friction. The sad fact
to reflect upon is that there Is no material
which does not wear, and that even when the
the
sb edu @ SO pss eron ,ne & PIcm W 6e be
idea in reducing the number Of teeth on the
large spEostet i 70 save this fretionai play on
rider last summer tried the experiment Of hsy.
ing every other tooth cut from q sprocket of the
XWbect Tia ianner ~ IN such n ohnnne 10 that
the chain NAV % ride off The sprocSet aitorether'
IN Tho hsb,t ~ nnuntine thn feetb NJ the snrocp
cts to ascertain tho gear. and therefore may not
away xyithont redncinu the gear it In worth
whs hf de-
ennvsnienca for sscerteinin@ the relative sizes "
n IL Snssible to caiculate in this wav becense of
the fact thai on ali moSern snrockets fbe teeth
are nt nniformiv u one inch anart '' 'ee'n
r,dsrs vii hs monntea nSon WSees titte9 i viaS
various accessories which could be of actuai
benefit on the road only. Visitors need NOT be
snrpr,sea 10 seS soe so,nnsd tme men ,a1ornng
and sbeiIs. snring frea pgeyicsa h ,ainps re
iiave the cnhbiesstone iolt ~ The hoard
track: puncture.proof tires. tough enough
In resIst raijroad spiScs: gear cases tn keen off
Tho ynnS hraGes ~ heIn nn hiIIs on6 ,,ossfhI,,
evcn wind shieIds Az EngIish Wha.} itb
osun M WIZ "ihu s,es al al ssSiioh NH wneSi YIN
ran rId gear I'M tbe oe he.i oy one
, tme 'oreisn HE iI it hne mheei Nt IL CON
ai ,n In 1 tho nSou ,,Riii mnva Vi ~ n aa
rather s,ppSrv ,,ban he nedsls ahnod reid
f~lher sio"i' "heh no poua's Hho"u Fapiuiy'
One Of the important matters to be decided at
the next meeting Of the National Assembly of
tho L. A. w. will be the admission Of profess
sionals to membership in the L A: ". lis felt
that the Sunday racing question will cut very
small figure in the deliberations of the dele
gates; but strong pressure will be brought to
bear to induce the League to provide in some
way lot & Slsssineaton 81 tae cash prizs riders
Some OF the largest cycllng ciuOs IN the coun-
try have been compelled TO Withdraw from the
League due to their admission OF professional
riders as members Tho addition of leading
amateur racing men to the professional ranks
each wear has Compelled bicycle clubs 10 change
their oonsiitutiona so es In Grant MON ershin 10
professionaia in order 10 retain riders in tbeir
aUts vnn t%at SaeI are fniiv nualIam ~ -, onSir S
come a ncm1ers. ,S strong srgnmehts m MI Dc % al.
vanced Ct sne hemnEue ma i,noetlhg Ia favor OF the
pros: neputa9o "neeimesa VINO race Tor