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VsnBSA Motorcycle Corporation o P.O. Box 6790 r Baltimore, Maryland 2I2O4 o (301) 252-3400

February 5, L972

Dear Mr. Dealer:

The new Dirt Racer ( or call it enduro or scrambler,..---.-..;-----sn].pmenc tro you.

ft converts a B50T or B25T to a slim, lighter weightfor cross-country, cow trailing or anything you wantroad riding"

It only costs $29.95 and with a few hours worknew and desirable model on your floor.

Profit? You name it! We ?rave some 1971 B50T's leftover atof $693.00, and some B25T's at a special price of $539.00.when you instatl the DA. Kit you put about $l-50.00 worth ofshelf !

The off-road season is now! Look over the enclosed brochureof instructions for the conversion which is included in eachthe order blank and put it in the mail today.

Cordially,

HPC: dbl

EncLresures

) kit is now ready for

more responsive unitto do in off- the-

you have an entirely

the special priceRememberparts on your

( and samplekit ), complete

www.bsaunitsingles.com

1. GETTING READY:

2,. EXHAUST SYSTEM:

3" COIL ANDCONDENSER:

HEAT SINK ANDZENER DIODE:

5 ". CAPACITOR:

6,, RECTTFIER:

4.

.l:3 :i ,r\- Kfii

TNS,f.Ar',JAI i i')t

REMO\IE turn ::i.qr:,,r i-i,,, i:.i.ra.ili-Ln{aL and hz:aqkebs, taiLf ight and rn()u:it: " !., rr lr .:i.,!.j i::racieet, wi,r-"i.ng harnesS,.el,ectric .bc:;.. 'i.t;^1'.!. ::. ):",' , irc.i.r r:rlV carriests I StOp lightswiLc.h -, a1"1. lrilr'r i r,"r ,:,i r- i rj,,ar l.'$ ai1d s;wiLches o chainguard,muff ler l sjJ€.€:..1i.r.i,:.:r...ri .. 5i-\:';:,:ialmgLer fl'rotlntf speedometercable,, seat i. ..:ji.:,i.'' ii.ij j"ii ra:r.J. and bi,tdd1" pegs"

IvloUnt the spai:k ;it:-i-,,qr-:i_:rr iiir:i.i.n:.] the ad.apter and. tail-pipe clarnp :ir!:i i.jre 4:.1 , ,".lr.lt.r i.ire sbock muffier clampon the st)ar.K a.r:r'{r*;-!,i ilriet frtpe " T'Irer 3f8" x 1" boltin the kj.L musl kre j.."ir.ri.a.lied in piace of the left- rearfootpeg. Thi.s $ir.'"rr./,:t t-i'...' r'oar brake torque arm..

Mount |he i.qn.i.i.i.'-.,tr ..,1::-1. ',l..i.t1.-xr;. tl"le ai.r cleaner pleumusing 'Lhe rera..r" l,,,li-.i:.!::i:r:'t' r,';r.,;r::ier: mou.nLin.g hole and boltc'Use one O:f tlt!.€ :i(taij(:\.1-:; ll:,;m the .headli.ght bracket tospace Lhe coi-l. ;*1;a.;n t.t:um i"llr: f::ame tube" The condenseris mount-:eij- iry jriijar:rt- j,yiri t..irr: cr:rnrlenser ground tab betweenthe coj-1. c:l.arnFi l:1i*.rrres r..;lr.i-ch roi1..!- pi"ncle it securely inplace wh.en t-he* ruriir:.ii.ri.r1.j be.,i.f- i.s Lightened" Do nottighten ti:ig leol,i: "lr::l,

The lid frr:m-t.lie el.rr:Lr:i-c i:c.rx vri.Ll be usecl for the heat sink.Remove the zer':er a1j-lcl+ i-::r.rrn t-iie heab sink (electric boxlid) and insLa]i-.i tl,lr: tji.crCr: in. t-.he same hole from the otherside. Be sur:e i:r-, l;.r.le lliE:;t'i-: sink seat.ing compound. on thediode. InsLa-l.l hir+-'- -ir*raf r.;ink atr the bop and with thezener diclde i;1sfpr; ouh.,, {-lse t:he battery carrier washersto space tht'r i'reiat. $j.r.k ar,\'a.y trom Lhe engine vent hose.-

TnstalL the caFal.:j..tr,r:( mr,,r-rrrt.i.riu sprj-ng on the same bolthol.di.ng Lhe ]reat- s,i,:rk" INlrr'" Lrrihlen the bolt to securethe coj.1, csndeiisi;r r ]rea"i: si-ti.kf anci capacitor spring,.The fron.t o.f Lhe iLe.a.l, r.rrlk is anchored by the 3" bracketand ttre tr-l4" x .312" b<;,1 t, sr-rppl-ied in LLre kit" Insertthe capacit.<-rr. j.n lhe spri.:rig w,iLh the male connectorspoinLing el.errt'Ii "

Scrape the pa.irri": r-rf i. t ite i"'::rrer: mourrLing lug for thebat-tery carrr:e:r: rtrn t:]" e,'r s j-;1lit. t:rame doisn tube" fnstallthe recLi.fier c.,n th.i.s J"i:c; ,.

Connect the ifl-.rq rr:,.! i.1 r'r:l:r:d ",vi"re to the r:ectifiermounting st:ud^ lir:r:rk Lii* oi:lie:r end of this wi.re to theposit.ive te:r:m.:i.ir.d-L ,:t:.) t-.lr;: rapr4sii6::'" lnstal-1 the shortred qrourrd. uiir.c: i.4.: i,i1r..' gr:r:llrrri ler:minal on the rectif ierand t.he crLher: er.r.j t',") i:.:rt-. i:reacieil .hole in the heat sink,.TnsLal-L the .l-a.r.rjo.- .Lrli;E.r 't,ormi.tlatr wi,t'h the brown wireson the zeyrer:- r:li.r":r;1e. .fh':.r'e ar:c tirree brown T^Tires on this

7 ,, W]RING:

f-


7"

BSA D/R KIT

WIRINGCONTINUED:

8. KILL BUTTON:

9. CONTROLS:

10: SEAT:

11. COMPLETE:

GCO: np

Page -2-

terminal. ConnecL one to t.he negative terminal onthe capacitor" and one to the center pole on therectifier, and one Lo the negalive terminal on theignition coil. The two green wires in the kit areto be connected to tile alternator Leads from theengine, and to the outboard" terminals on the rectifier"There are three bl-ack r,,rires in the kit. Connect theshort balck wire to the condenser and the positiveterminal on the ignition coil" The 12" black wire isalso connected to the positive coil terminal with theother end plugged. into the contact breaker lead fromthe engine.

The long black lriire is Lo be plugged into the contactbreaker lead and the other end routed to the handlebarsfor the kill button. fnstal-l the longer spark plug wirefrom the kit and the el,ectrical system is complete.

Install the clutch and brake levers from the kit, andhook up the cables and kill button" The throttle andcompression rel-ease control can now be reinstalled.

The seat may be Left standard or cut to any desiredIength" Encl.osed is a diagram for cutting the seat downto the same length as an MX" Remove the upholstery andcut the seat frame to size" Allow enough material for abottom 1ip on the seat frame" Have an upholsterershorten the pad and cover" The average charge by upholsterersfor this job is less than $5"00" Properly done, this nakesa very nice Looking and" comfortable seat. Make sr-lre theseat frame clears the rear fender before you have the coverrefitted.

The D7R conversion is norr complete. You may want tochange the fend.ers, tiresr or gearing to better suit thetlpe of riding the motorcycle is to be used for,, Withcareful installation of the kit and normal servicing,you now have a very competitiven dependable and enjoyablemotorcycLe.

HAPPY DIRT RIDING!


ORDER FORM FOR D/R KIT

FOR B50T and B25T

BSA MOTORCYCLE CORPORATIONP.O. Box 679OBaltimore, Maryland 2J-204

Send me:

Quantity D/R. Kits @ $29.95 each.

Dealer Name

Dealer Address

Dealer Number

HPC:dbl


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on thie line.llp after


BSA MOTORCYCLE CORPORATIONA subsidiary of The Birmingham Small Arms Company lncotpotated

TI

1sn DIR Klr

CONVERTS25O -5OO VtCfilR trclil into

DIRT RACER


DICK tillANt{3 FAYoRTTE

HIDDEN ELECTRICS

THE IGNITION ELECTRICS ARE RE

POSITIONED UNDER THE SIDE

PA N ELS. USE ORIGINAL CAPA-

CITOR, RECTIFIER, ZENER DIODE,

COIL, CONDENSER AND HEAT SINK.

SPECIAL WIRING HARNESS AND

CAPACITOR FURNISHED WITH D/R

KIT.

MX LOOK

ALL LIGHTS, TURN SIGNALS, WIR

ING HARNESS AND ELECTRIC BOX

ARE REMOVED FOR CLEAN MX

LOOK.

BATTERY AND BATTERY CARRIER

ARE ELIMINATED TO REDUCE

WEIGHT.

SPARKS

COIL AND CONDENSER ARE

MOUNTED UNDER LEFT SIDE

PAN E L,

4'' LONGER HIGH TENSION LEAD IS

FURN ISHED.

S;,{,,,i


oo o co

SEAT

THE DUAL SEAT CAN BE TRIMMED

TO MX PROPORTIONS (DIMENSIONS

I NCLUDED I N INSTRUCTIONS).

EXCHANGE COVER IS AVAILABLE.

IF PREFERRED, MX SEAT #83-2746

WII-L FIT RIGHT ON.

SPARK ARRESTER

MUFFLER IS REPLACED WITH AP.

PROVED SPARK ARRESTER. Db

LEVEL IS BELOW THAT RECOM-

MENDED FOR OFF ROAD

VEHI CLES.

SPARK ARRESTER, ADAPTER,

CLAMPS AND BRACKET INCLUDED

IN KIT.

DIRT RACER

CONTROLS

HANDLE BAR CONSOLE SWITCHES

REPLACED WITH DOUGHERTY CON-

TROLS.

D/R ADVANTAGE OVER MX: SIDE

STAND 2% GALLON TANK, SKID

PLATE AND EASIER STARTING (24"

1GN ADVANCE).


B5OT DIRT RACER

READYVICTOR TRAIL

D/R KlT INCLUDES:

INSTRUCTIONS

KIT NO. DR5OO

CONTROL LEVERS COMPLETE, KILL BUTTON, CAPACITOR MOUNT SPRING, ALL NUTS, BOLTS ANDSPACERS, SPAR K PLUG WIRE, WIR ING HARNESS,APPROVED SPARK ARRESTER, COMPLETE WITH

Pi:':i T1 l'o" ::il : ): :Tl?[?-t-'L"]FREE OF CHARGE.

BSA MOTORCYCLE CORPORATIONP,O. BOX 337, DUARTE, CALIFORNIA 91010P.O. BOX 6790, BALTIMORE, MARYLAND 21204

ORDER FROM:


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