Cycle News is a weekly magazine that covers all aspects of motorcycling including Supercross, Motocross and MotoGP as well as new motorcycles
Issue link: https://magazine.cyclenews.com/i/125499
QUESTIONS AND ANSWERS r By the Answer Man QUESTION: ,. I Send your questions to Thl Answer Man, l:.1rl of Cycll Nows, 80. 498, Long BUell, Calif. Sorry, volume of mall does not allow us to send Individual repilis. QUESTION: Please explain the principles of operation of the compression release on two-stroke motorcycles. G. T. - Vista, C·alif. ANSWER: When a compression release is activa,ted, large quantities of air are drawn into the engine and then transferred to the cylinder. The engine labors to expel the incoming masses via the exhaust; however, its only power to do so is the enertia it has retained after being shut down. Actually, your two-stroke has become a hard working air pump. The braking effect is tremendous! HODAKA RESULTS I have two questions on the Matchless scrambler single, 30.50 cu. in. engine. Would it harm the engine by removing the flutter valve from the engine breather and run a hose from the breather tubing to the top of the oil tank? You would then have a breather from the . oil Lank to the open atmosphere. Would it be possible to install the laLest type of oil pump in a 1956 engine? Also would it be possible Lo put one in a 1954-55 longer stroke engine? R.S. - San Diego, Calif. ANSWER: There would he no harm done in venting the MatclJ.. less engine in the manner you describe. To obtain the same results without mod if yin g the existing breather, you can purchase a Webco rocker cover with a vent attachment that works easily and looks neat, If you pursue the hose and tank system, make sure that the oil tank is a'ctequately vented! It would not be possible to install the latest model oil pump without the purchase of new crankcases and one half of a crankshaft. The cost would be virtually great er than th e val ue of the en.gine. S.C. T.A. English Trial Son. Mar. 19 AMATEUR ULTRA LIGHTWHT 1. CHARLIE HOGUE HODAKA 3. DEXTER KINNAIRD HODAKA Hare Scrambles Sunday March 19 TRAIL BIKES 1. JACK MORGAN 2. FRANK MORGAN 3. NORM BENHAM 4. TOM FEE 5. TOM RUDDY 6. JACK JOHNSON 7. CLEVE THOMAS 8. ROY BARNETT 9. PET FOSTER 10. DICK WRIGHT 11. J. MARONEY Jr. 12. WM. LINDSEY AMATEUR WOMEN HODAKA HODAKA HODAKA HODAKA HODAKA HODAKA HODAKA HODAKA HODAKA HODAKA HODAKA HODAKA 1. JOAN WILSON HODAKA High Boots M.C. Scrambles Sonday March 12 90 M A- MAIN 1. J. PAYNE HODAKA HODAKA 4. M. CHIARA 5. P. VANDENBERG HODAKA HODAKA 6. G. GAST HODAKA 7.R.NOORGAARD HODAKA 8. J. GRACE HODAKA 10: C. GRIZZLE SIDEWINDERS SCRAMBLES Pboto & Report by GU Or1mayer ~ <0 0> Fifty-one riders in four different classes braved a cloudy damp : Snnday aftemoon to try their skills Ion the side hill track of the Port- _ .~ land Sidewinders M-C Club. A blistering pace was set by "Little" Jimmy Sotith in both the 250cc and Open classes on his 250cc C-Z. Touring the short rough track with the ease that makes ellllerienced ellllefts shUdder, Jim led five of the six races he entered and placed second in the sixth arter a voiding a (aJ]en rider, On the last lap of the Open tropby dash Jim on the outside. Jerry Kouvo and Daryl Mulick were elbow to elbow coming orr of the hill portion of the track into the comer at the bottom when Mulick tagged Kouvo, knocking him down. Jim went to the outside of the track to avoid Kouvo's bike, then continued on to get a second, Referee Mort Becker called it a foul on MuJick's part, forcing bim to forfeit tbe win. Let us not forget tbe "Tbompsons Three," Lee. Mike .and Jerry. Always a pleasure to watch, the Tnompsons were present again to add color to the excitement. Jerry and Lee were on their 160 ~ ~ Winner of 250cc hlat rae I, Lanci Morllson navvys around tum onl. Start of tho open hoat race, 63 Jim Shephard, 84 Daryll Mullet<, 19 Jimmy Smith, and 77 Jerry Kouvo vii for positions. Hondas, while Jerry's boy Mike was running of the 250 A-Main and subsidea mounted On a 200cc Bultaco. at the end of the Open A-Main as if to Jerry was leading on the first lap of add an extra hazard for the day'S best to the 175cc heat race. when his ti,rottle con tend with. stuck and he had to lay it down. Doing A crowd of about 350 braved the cool so, did he slid into the track wall but weather and were certainly not disapmanaged to get everything straightened, pointed with the days results. his bike started and was able to pass Why Indeed! the two last place riders to precede Jack Mott and brother Lee across the finish This was the first of what may be the for a third. last three races at the Portland track. Mike Thompson on his 200cc Bultaco The Portland Sidewinders have been for the first time since rebuilding it ordered to appear in court APril 25, 1967 wasn't quite fast enough to get a win in to show cause why they should be althe heat race, but made .&.Dod a second lowed to continue racing at this track. It chance to enter the A-Main by winning seems of little consequence to a few the crowded, crash filled 250cc Semiresidents (the closest one is ~ mile in Main. A four bike crash on the first atthe opposite direction of the only access tempt to run the' Semi-Main eliminated route to the track) and a county comJim McDougal and his C-Z. On the remissioner that this is considered the start, Mike sailed off to an early lead only reputable track in tbe Portland and continued to widen it throughout the area. Hoy(ever. during the ten-plus years, race. In the A-Main, while running close the Sidewinders have been in existence behind Jimmy Smith, he met with some they have been under pressure by a few bad luck when an ignition wire parted, diehards that are blind to any reason causing him to drop out of contention. why motorcyclists should like to enjoy A steady drizzle started during the their sport as much as anyone else. We the cyclists would rather enjoy our sport where we are the least nuisance and benefit the most. but feel that we have been pushed far enough. (Results on page 16) . Jimmy Smith and hi s 250 C-Z shi nld in both 250 and open classes. Distributed By H,A, NELSON PlIoae (2l3) Z43-1811 Glellllale, Calif. Sed of ken CIIIIlty No. Calif. Di stributor LEAVITT POWER TOOl. co. INC. 2265 Sunri se BIveL Rancho Cordova, Calif. Phone (916) 63506970 Miko Thompson proved hi s ability !ly winning the 250cc seml·ma!n.