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Tag Archives: Motorhead Memo

Motorhead Memo: Frame-up—Part 1

A great deal more thought, effort and expense has been put into the understanding, care and feeding of Harley engines than chassis. Too bad. A basic knowledge of the motorcycle chassis is damn helpful and potentially able to make a rider look good, be good… be better… than a motor. Harley-Davidson hasn’t always been noted for expertise in the areas ...

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Motorhead Memo: Intelajet install

Remember the Intelajet install article intended for last month? Well… here it is… sorta. Only it’s done on a S&S Super E, rather than the CV Keihin or HSR Mikuni. Why pick the carb H-D never sold, rather than the two they have? To paraphrase what flow guru Jerry Branch once said, “Butterfly carburetors are like having a five-speed transmission ...

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Motorhead Memo: Intelajet redux

The intention this month was to show a step-by-step installation of a Thunder Products Intelajet circuit on a Harley CV carb. We’ll save that. For now, let’s review some reasons you’d want to install one! There are several components that need to be optimal for a true high-performance carbureted Harley street engine. But the “ins and outs” can be tricky ...

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Motorhead Memo: Intelajet

I should preface what follows by saying electronic fuel injection is here to stay, because it is a superior air/fuel delivery system. It manages to keep emissions down and performance up… delivering fuel economy benefits into the bargain. Took me a while to get around to being a fan, rather than just an ignorant victim of this technology. I’m ashamed ...

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Motorhead Memo: Stumped by sumping

For as long as I can remember, my involvement with Harley-Davidson motorcycles has included dealing with the dreaded “wet sump.” (Well, OK, you might not dread it, but I have learned to.) This whole “sumping” thing is a rat’s nest of misconceptions and muddled understanding in the first place and H-D doesn’t make it any better. Technically, wet sumping is ...

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Motorhead Memo: Make the eagle scream

A $19,000 Heritage Classic will run with a $40,000 CVO Road Glide. A 114” Heritage will outrun one! Huh? The bargain Tourer will smoke the flagship? How can that be? Well, it almost always has been, because Touring bikes are heavier than cruisers. So how can it not be? Besides, since the advent of 103” Big Twin engines, most riders ...

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Motorhead Memo: Head stroking

Couple of things we need to get through in the space allotted. Let’s start with the two 114” M-8 engines, one supplied stock or optional and one a Screamin’ Eagle upgrade to the base M-8 engine. As you’d imagine, the two engines have much different characteristics. But deep at heart, the main thing is the stroke… uh… strokes. You wouldn’t ...

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Motorhead Memo: The new Softail: Classy Chassis (Part II)

Last time around we talked briefly about a few of the neat (and unsung) supporting players in the total redesign of the 2018 Softails. This time… let’s dig a little deeper into the engine and chassis combo that’s got everyone rethinking Harley’s cruiser image. Or should! After all… dynamically… about the only thing these new machines have in common with ...

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Motorhead Memo: The Gentleman’s Express

For those too young to recall or too new to Harley-Davidson to realize: Harley-Davidson FXR = Forever Excellent Roadster. Actually, it really means… F = Big Twin engine X = (Sportster-derived) front end R= Rubber (vibration-isolating) engine mounts … and the factory should have stuck with that simplicity, in more ways than one. For instance, Harley never bothered to “name” ...

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Motorhead Memo: The new Softail: Classy chassis (Part I)

Let’s get this out of the way up front. Last month I made the wish (in print) that Harley would give the new 2018 cruiser lineup a chassis to match the capabilities, character and potential of the Milwaukee-Eight powerplant. They have! I’ve ridden them all and will talk about that… soon enough. For now, it needs to be said that ...

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