Show Writes of Work Wark of Li Liberty erty Motor 1 I I Ian S San an I Francisco i Man Ian Is Assembling As As- Motor 1 in England Rr fly PI Iru San Francisco Nov No 2 Thc The Ilbert Liberty motor has ma made mado e its ita appearance In great quantities It Is certainly a big ble success especially tho the quantity production its tho cleanest t cut motor over o here Corp Jack Irvine Jr Jr export mech in itt the United States nero aero corps an and son of ot J. J C C. C Irvine of ot San Francisco Francisco Fran Iran cisco not noted ll air pilot antI and official representative rep rep- of ot tho the Aero Acro Club of ot AmerIca America Amer Amer- ica len here BO so sizes up UI Americas America's most important contribution to aerial fighting fighting fight fight- ing force torce Corporal Irvine has been engaged In an English technical camp campIn In putting the tho new now motor into final shape for tor chasing the HunsIn Huns In his letter Jetter passed passe by the tho British censors Corporal Irvine lne gives some somo in interesting In- In points on the motor lie He says sas In part I 1 haven't been in the air latel lately as the Liberty Libert machine has made mado Its appearance ap ap- ap- ap hi tn great quantities and l e been kept bus busy tuning them and makIng making mak mak- ing lug a few tew changes chang on th tho ho el be cam camshaft camshaft shaft drive e pear gears These Theo Hears gears it seems scorns are aro a little light to stand tho the strain The correction will be bo made on the ones to toll follow ow I j Imagine The Tho relief vale val which valve e which controls the tho oil pressure pressure pressure-Is Is in rather hard harl or difficult difficult cult place to set get et at it Tho Tue oil must first be drained from the tho tank and sump cover corer removed be before before be- be fore tore tho the alteration can be made We Ve drop the he pressure from 50 o pounds to 10 about 25 S as aa tho the oil nets gets b by the tho pistons l to to the plugs plus A scraper ring ring- on tho the pistons would eliminate this trouble with tho ho pressure still at 50 1 Otherwise tho tIm Liberty is certain certainly a bl big especially In iii quantity production It la 19 tho the cleanest cut motor motor motor mo mo- mo- mo tor over here It Its Ha weight I Is OG 06 pounds and hor horsepower horsepower horse horse- e- e power o at nt 1700 revolutions per minute min latH ute Petrol consumption 36 gallons per hour and oil ono one and gallons gal gal- hosts lons per hour ki kiVo Vo Wo e use usa tho the Liberty in tn types of r machInes ma- ma dunes chInes like lIko tho the Do lland Ha four tour anti and the Do Dc ton tomi The Tito states are building these types Of Or course courtl you jou OU know that It i is Impossible for to me mo to write of ot tho the weight of ot bombs carried C etc tc Our squadron boys boya now wear t the theold gold old bar on oti their sleeves es six months montha foreign service lYe Ve e were ere among the first o over Tho later men will get Jet a silver sll bar At present I Rm am ni at attending attending nt- nt tending a technical at Wendover Wendover Wend Wend- over ocr having been elected eJected with three other California boys to receive the courses course This opportunity Is given gl out through headquarters at London from the tho squadron dally daily reports Wo We have havo been beer here hero one week and I am sure sUr In favor ta of ot the Idea Mea E cr Every known motor Is dissected hero here and a technical course on Ignition construction nn and design given I en No No doubt wo we will finish with tho the work In a n month will take talo up HIspano Suiza Sulza and papa rotary This has It on other types of ot I Ho Motors Motor If It you ou remember I had JUHl quite a fine opportunity to get et tho the proper workIng workings workings work work- ings Ing of oC tho the Royce Rolls when I visited is vis- the works at Derby through the hospitality of or tho the r e representative Mr r. Archer Th The Royce Rolls Is 19 one of ot the costliest motors made mado In Surope for tor pleasure cars Hern llort at Wendover there ar are about Yanks attending school and a 11 large largo number of or Tommies Its It's quite an In Intel Interesting In- In tel place being part of ot Lord Rothschild's estate and the camp whore where Lord Kitchener's were raised As Aa a side attraction our friend Bill Dill Penns Penn's grave Grae Is a few tow kilos away Last night we hiked o over r to Tring an Interesting little hamlet t. t Th The houses s streets and stores are so lO small In these villages that a n tell fellow 0 feels teeb pretty Irett big many big many of ot the streets are arc no nomore more moie than ten feet teet wide Ln Last t Sunday we visited th the old oM to town n of ot hind Had to dine nt at three restaurants before getting filled d up The Tue small villages are arc what I like hike to toIs Is visit It The little brick houses and crooked narrow streets ets are a n scream There Is la a small hotel called the Stack of or Un Hay This pIn place co is built of or brick with red tile roof root heavy y oak doors and about twice the size of ot an nn election eJection booth Well YeU dad it wont won't b be lon long b before tore you ou will be getting mall mal from me via 11 Berlin No o fooling toolinG Corporal Jack Jacl recently wrote a a. letter letter let let- ter to San Francisco while flying feet teet over or London |