The strangling can be addressed in various ways, beginning with freeing up both the intake and the exhaust and with appropriate finetuning to the Engine Control Module (ECM). Adding better flowing heads with larger valves is another step as is selecting a higher performance cam (or cams) and removing the catalytic converter.
But of course there is a downside to these engine modifications also, and that is they are usually done to increase both horsepower and torque. So we seek higher compression ratios also and the net effect of the combination of these changes is increased heat – increased radiant heat – which is felt by the rider.
Then, in the bagger world, we have the air flow reduction created by fairing lowers, which can be quite substantial. Plus if we add in the weight of a beefy rider and his voluptuous other half, and things can get really hot.
Now the big problem with air-cooled engines is that they need air flow to produce cooling. Oil coolers do not do much when there is little or no air flowing over them such as in heavy traffic, stop/start conditions. Here is where fan assisted cooling can play a role.
Well a mate of mine, who was very pleased with his unit, suggested I take a look at the ThunderMax Oil Cooler fan and so I did, and because I liked what I saw, I booked my bike in at Adelaide Harley-Davidson Bike Works to have one installed.
Esta historia es de la edición September - October 2020 de HEAVY DUTY Magazine.
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Esta historia es de la edición September - October 2020 de HEAVY DUTY Magazine.
Comience su prueba gratuita de Magzter GOLD de 7 días para acceder a miles de historias premium seleccionadas y a más de 9,000 revistas y periódicos.
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Polishing The Facets
Finessing the sharp edges and making that 124 sing and dance
The Fabulous Flexi Flyer
A genuine time capsule with history oozing from every single unique pore.
Road Raves Living The Life With Doc Robinson
WORDS OF WISDOM “When I was old enough to ride a motorcycle and got my license, I bought a ’69 Sportster.” – Chuck Zito
The End Of The Line
Writing a road test about a bike that is due to disappear from dealers’ floors any minute is a bit weird. Should this be more of a eulogy?
Now It's Time To Head Down Track
What happens when I’m ready to race at an IHRA-sanctioned dragstrip?
RAUCOUS ROCKY
With our own area called the Motorcycle Precinct, bikers were well catered for at this year’s RockyNats
S&S SUPERSTREET
With a Softail Deluxe already dripping in chrome, of course Paul was easily swayed by the offer of a shiny, new S&S SuperStreet two-into-one.
SPORTS STILL ROARING
Blues skies greeted the National Roaring Sporties racers for Round Two at the challenging Morgan Park Raceway near Warwick, Qld.
NO STRINGS ATTACHED
Even some of the locals are over the yodelling and pedal steel guitars. HOG member and history nerd, Roderick Eime explores another side of Tamworth and the surrounding region.
HAPPY HOGGIES
The drought was well and truly broken with HOG members from all over Australia making it to Rockhampton.