8/3/2019 Ervin Engine

1/10

-fF" rASSEMBLY

(NoS . RE,ct.R. ro O rNEA. .01

8/3/2019 Ervin Engine

2/10

-";,.-.

ERVIN ENGINE PLANSThe kit and plans you have purchaHed reprel'ent. many hourR of thought, research and planning. The materials In the parts are the finest obtuinahle at the present time. We feel thatwe ar e offering a high quality product at as r e a ~ o n a b l e a price as is possibleY o ~ r ' h a 8 i ~ ' kit - c ~ ~ 8 i 8 t s of : main eng-ine casting, 'a' c ~ i i n d e r head c - : ~ ~ t i n g - and two flywheels;all of high quality grey iron. It. alHo includes an aluminum casting to machine your piston,a die casting to form your connecting- rod, and a se t of timing gear:; with completed cam lobe.

* * * *t,: The partly machined engine kit comes with th e following completed: base ground flat, drilled,and. tupped for 5/16 . ]8 N.C. bolts. End of cylinder has been ground flat and square with hase.Cyhnder has been bored Hi" diameter. C r a n k ~ h a f t journals have been drilled and reamedto %". * * *

CRANKSHh.FT JOURNALS DRAWINGI. Counter "ore or machine flat bult. tlUrfllcc of journal hOHS.

~ Layout IIml driU U drill 1" d('ett. No. '7 drill.., Drill Vi" deep wIth No.. F drill to provide clearam'c for machine :::crew in bearingJ.1. Tap hoh'H fo r _ ~ - 2 0 ~ machintJ ,..;aew. .. . ':ap.,l . Cu t bearing- l'UPS loose with hacksaw or w i ~ h ~ l i W n ~ b h , ~ l e on null I f a ~ a l l a u l e . G. Fit bearing ('ups carefully and shim to prOVide runmng fi t on crankshatt.7. Drill and countersink oilers in bearing caps.* * * *

CONNECTING ROD - DRAWING 21- Counterhore or file flat surface on hoss of rod cap.: : . ~ . Drill through hO:-iSCR wit.h 1'!0. 11; drill fo r holt:-i.." Drill 51) 6" deep with No. 1lj drill.\. Tap through with 12 24 tap. Optional)(l - 211,Drili u"iui reanl -'YK:: h O ; f _ ! ~ -Ii , Carefully nl!. ea p loose rrnm rod on ccntl'r 1inl.'. I i ~ I. Drill nil hok from h ( ~ a r r n g ' H I I I ' f l l n ~ Inl.c; rod .willl lIHi" dr;11.S. Drill ~ l I d I.'ollnl erHink top oil ho!(' with f ! W,,' drill llllel :V IIi ,- countersink. T h ~ e hnle.smU."lt O1t.(f.!). J3o/t bearing- ('ap 1.0 rod. Shim r.o running fit.

j fl . Drill wrist (lin hole %" . Ream to ~ I i d i n g ' fi t on piston pin.I I. Cut piston pin 1%" long. Use ~ ; 1 " cold rolled steel.* .* * *PISTON DRAWING 3

I. Hone cylinder smooth before turning piston. Piston may 'need to be' sligh tly oversize.~ Turn piston to size." Face end of' pi:::ton flat.. 6 1 compression ratio.,L Cut ring grooves .095" wide.; l . Drill ~ 4 hole for piston pin. H ~ l e W' from face of piston will give approximately

PISTON RINGS - DHA WINC -1. Utlt.'d H u t o m ( ~ h i l e hrake cylinder will provide you ~ i h I I hi rhcast lI'On to turn rIngs. g quality piece of fine grained

. ~ Tt,trn a sleeve, ~ 1 . H O " im;ide, 1.288" outside. any t.'onven-ient IenCTth.SlIt sleeve It.ngthwise wit.h hilt:!(suw ,.,:1. Chuck sleeve using enough tension' to close sliti\.. Turn .slE:eve to finish diameters, 1.140" insl'de,' 1,.250" 'outsl'de5. C t f I or to t it cylinder.u rmgs rom S eeve. Cu t o,versize and face to .093".. , , , . - .. --- Crankshaft Timing .Gear

I . The gear provided has a ~ . shaft hole. This ro tlst he ~ l r i l l e d to fit crankshaft. I tshould be a snug fit. ," (;t.'nr cait be positioned ~ H fn)l\l (TankHhaft lohe and pinned ur kcY('d to crankshaft.I f !.'Ihims ar e needl,Jd at crunkl:lhuft journals ttl limit end. play, .they must ut.' installedbefore gear is pinned.

8/3/2019 Ervin Engine

3/10

FLYWHEELS - DRAWING 51. Chuck flywheel casting with large side 'of hub toward ( ~ h u c k . 2. Pace tlywhcl'1 rim llnd 'huh section.3. Cu t shoulder on inHide edge of rim. n i m e n A i ( ) n ~ of flywheel are not critical; bu tboth flywheel:.. should be the same for good appearance.4. On one flywheel, cu t outside of hub to 1 ~ diameter and face surface of spokes to2" diameter for governor mounting.5. Reverse flywheel and clamp internally by shouHer On inside of rim.6. Face rim and surface of hub. Undercut rim.7. Centerdrill bore and ream shaft holes to %" .8. Hub of governor flywheel should be turned to 1%".9. Hub of drive flywheel should be turned to sig-ht crown for small flat belt.

10. Turn circumference of flywheel flat.11. Drill an d tap fo r Het screws or key aH desired.12. Drill and tap governor fl.vwhtlel fo r ~ 1 - 2 0 machine sercw.IGNITh)N CAM - nnA WING (i

1. Cut piece of 1" cold rolled ",haft %" lon/{.2. Filce both ends.3. Drill and ream %" fo r shaft. .:: ~ f t ~ l o ~ n ~ r ~ ~ ~ ~ ; ~ t . s e t screw. 6 ~ J ~ p o i i s h m g i ~ ~ ~ ~ a H e t ~ S i ~ ~ ~ ~ a ~ ~ f t f ~ v ~ r ~ ~ \ n i ~ ~ R . POINT MOUNTING - DRAWING 7

- Six volt automObile points, coil and condenser ca b .battery for an ignition system Point d d n e used wIth a 6 volt lantern or hotshotb e J ~ w c r a n ~ s h a f t On ignition side of e n ~ i ~ ~ b c O ~ r i ~ ~ s e r .could be. mounted d i r e c ~ l y On the bossengme ~ a . s t m g . Spark plug iH . Jr; ...y Chng a!1d tappmg small machme screws intohidden m base. Or amplOy Z B a t t . ~ = / . an d coil could be

GOV ERNOU CONTHOL SLEEVE - nItA W I N ( ~ 81. T t : l I ~ 1 : ~ / ' j C 9 ( , z . . ; ~ s r d ' e J l : ~ n l c i m .

3. ~ t t r i ~ d ' I ~ ~ ' : t ' m L%';h(;le: ....This.. m ~ s t : b ; ~ i i d r ~ g : ' f i t on c ; - : ' a ~ ' m h a f t . 4. Cut control Kroon'S in sleeve. 5. _Cut i)('v('1 on end.. .6. Mount on crankshuft between timing gear and flywheel.

.. _ ... ~ .. CYLINDER OILER - DRAWING 9or less. t;."P -AS Ptu'lll(6. Cut:tA" cold rolled rod 2W' long. Drill through rod 3/327. Thread ends of tubing with ~ thread. A.tDf - t ; ~ i e

CYLINDER HEAD - DRAWING 10 C.1. Face flat side of casting.2. Turn an additional 1132" frOm face of casting leaving a IY&" boss in center. This wiDaid in a l i g n i ~ g head f o fastening. fb ...1...0 W PR AW l '" lOt:,.3. Face o ~ h e r . _ ~ I d e of castmg.

V ~ VALVE - DRAWING 12 t.Turn valve from cold rolled steel. Use I i ~ h t cu t to avoid dh>torting valve while. turningvalve :"urface. V l l h ( ~ Htl'nt II1I1St be Rliding fit in vain Kuide.,....." ...ROCKER ARM~ SUPPORT - DHAWING 13 C

- ....ROCKER ARM - DRAWING 14 C.Rocker arm is fabricated from 3/16" x :Yz" steel. Grind or file to shape.

GOVERNOR MOUNT - DRAWING 15 CFahrloat.e frum :1I16" plate 2" x 2" and %" x Vol" hot rolled steel, Weld tabs' in place.Mount tabs before drilling'.

. ' u . . . . . " ... ~ ~ ...... ..,. "V r r ...HNOH WElCiHTS - IHtAWING 16 Fabricate from flat Htnck and rod. Weld to!!.l'ther. Tabs are for governor springs. Shape!.f." end of ar m to give free action in governor sleeve. Make two weight:o;.

8/3/2019 Ervin Engine

4/10

CAM SHAFT SUPPORT - DRAWING 17nThi r t is mounted on inside of main casting to position large t i m ~ ~ f . l gaenaJ ta d ~ : on c e n t : r l ~ ~ : ~ f c r ~ n k ~ h a f t journal an d proper distance for gears to mesh. p_CJl8ting fo r 1,4-20 ,glaclllne ~ c r e w s . ~ . ..

CAM SHAFT - DRAWING JHTurn from %." cold rolled steel. Th e %" diameter m list he a running fit inside largetiming gear. The large radiuM on large end of shuft is to provide working clearance for governor weights.

PUSH ROD - DnAWING ]9PUMh rod is fllhri('utcd W i :-:thown. Thrcad 8 picn" of :1/1(;" ('old rolled steel with 12-24 thrNldson one end. Cut to length after checking exact leng-th of your c n ~ i n c . Rnd will be about :\.1/-.:"10nK. Using thrcad end and a lock nu t will allow adjustment.. A l"l]Jring will be needed around, ..ow,....

, ' < PUM rod and 8J,:'ainst front bracket. This spring can he made from spring wire.~ GOVERNOR ARM - DRAWING 26"

Shape from 3/16" steel. Round end which fits governor control sleeve. This part mayneed some modification t() work prCl}Jerly.SUPPOUTS - DRA W I N ( ~ 21 & 22

Drill and tap side of main c u s t i n ~ with 12-24 thread. Brackets must be ulligned to preventbending of push rod. Support B coulll he fabricatcd from Hcparat( parts or drilled and filed toshape.. MANIFOLD - DRA W I N ( ~ 2:1

, Ylf,.J . : ~ " pipe nipple. Exhaust manifold Is 3" piece of Yi

8/3/2019 Ervin Engine

5/10

2 W'/GHTS* - - - / ~ -

NEED

GOVERNOR WOCHT - DR. /6 - cGOVERNOR MDUNT- DH/! : -C Jg O{{ILL~ ~ . . , I I ~ [ > R / L L - c . .

CA!'1 SH,4FT 5UPPORT-DI?/7 CA M SHAFT - OJ? /g 'DRILL NO./6

TIJ P I 2. - 2 4f

/ '-gDRltL1- R.f

PUSA ROD - DR. /g , GOVERNOR ARM- DR. 20

8/3/2019 Ervin Engine

6/10

Cranksna ft Construction

l - i f - " - - S ~ Jz SCAL1. Rough cut crankshaft counterweights.2. Tack weld together to insure correel allignment of hules.3. DIiH 'ai.ld ream % ' holes. ' T h e ~ e m u s t be press fi l on shaft .4. D r i l l ~ " guide hole. r5, Break welds and separat.e count

8/3/2019 Ervin Engine

7/10

...

II JL.. __ ...>

CONNECTING ,RoO ~ D R . 2

,I

PI5'TON - DR, 3, PISTON RI NGS - DR. if

c.. ,5,

No. I DRILL I "'0[[' P 12. -,2'1 OIRV}fJNo.!2 ORILL >'-f; pEEP2 HOL E 5

58 f

8/3/2019 Ervin Engine

8/10

.#

FIIC

- GOVERNOR SID"~ N I T I O N 5/0

Nore, NE.wvYHtELA I t E L A R r; c! .

W I B ~ F - . - 20 TAP

Correction to D r u w i n ~ 5 Flywheels - New .Flywheels will' face to approximately 15/16" rimthickness with approximately 6'w' outside diameter.FLYWHffL 5 - DR. S

S ~ L ) R K PLUG

>1

1-- ..IGNITION CAM - DR (;

Fa DRILL - REfI MTO ..sLI f) I N GFIT

- DRILL #0. 1TA P :J,t -21J

CYLINDER oILR - DB. _9.

~ POINT 1'10UNTING - DR 7

GOVERNOR 'SLVE- DR. 8

8/3/2019 Ervin Engine

9/10

3......\t-J /6 ORILf - 1F- L. - - . .+- - -J ..14 / SUPPORT A- DR. 2/

.fi

3/8 PEEPYs PIPf'

~ . L - L v ' L 1 I / , , . . . . . . - L . ~ Till

8/3/2019 Ervin Engine

10/10

DRILL!! . - TAl->32.11 P IPE THREAD

1DRILL-If HOLES :z D R I L L ~ 4 . DfP_ /6 _ .__ --8 ---- - --- - C - 8 0 R ~ - 2 HOL$

2{ ' - ARM

CHANGEDRAWING" 2 - CI/,4NGE .3 TO f-kDRAWINGII'S -, F t . . Y W H r ; : ~ L size HA sClllNGtD) }/V8 TR:IsTI1INT SAMEPISTON, RING ... AND HEAD DRJJWINCSCIJN YliRY "vIITII CYLINDtR SIZ,.

t - . . \ ~ ........1, - " . ROCKER ARM- DR )lfe I \ ~ f - - - - - - - - - ~ - ~