Harley-Davidson Forks – What’s Inside That Thing?

12

November 12, 2010 | By: David Zemla

Editor’s Note: This post was written David Zemla who works at Progressive Suspension. This is our fifth guest blog post from David and we want to thank him for sharing some of his expertise with us. His earlier posts can be found here.

Motorcycle suspension tends to be something of a mystery, with forks being at the top of the “what the heck’s in there?” list.

Sure, there’s a spring and some oil, but did you know there are two springs in each fork? Is the oil just a lube or does it have a bigger job? And what exactly happens when I lower my forks? All good questions.… Continue Reading

| Comments: 12 Comments | Categorized Under: Product Information

Video Makes Quick Work of Suspension Setup

4

July 21, 2010 | By: David Zemla

You can have the most impressive rear suspension setup in the world and it’s probably going to be a big disappointment to you unless it’s properly set up. To avoid that happening, Progressive Suspension has produced a six-minute video that shows how a few measurements, a little math and a bit of fine tuning can help you realize the potential of that hot-shot suspension system.

Scott Hodgson, Progressive’s director of applications engineering, has more than two decades of experience with motorcycle suspension. In video clip below, he walks you through a detailed setup on a Harley bagger, although the same instructions apply to those adjusting a twin-shock bike (you’ll be … Continue Reading

| Comments: 4 Comments | Categorized Under: Product Information

What is Suspension Sag and Why Would I Want It?

1

May 20, 2010 | By: David Zemla

If you’ve been reading my J&P blog posts about suspension and bike fitment, you might recall that your shocks can be adjusted to fit your bike and weight. You also learned that in order to achieve a proper fit in the two-wheel world, sometimes you need to swap out a part. But what if a simple adjustment will do? For that, you need to understand that shocks work with both the up and down movements of the bike. If all pavement imperfections were bumps, shocks would focus on compression. But life on the road isn’t just a series of bumps. There are also potholes and other gaps and depressions that … Continue Reading

| Comments: 1 Comment | Categorized Under: Tech Tips

Eliminating Fork Dive with Progressive Suspension

3

March 31, 2010 | By: David Zemla

Does this sound familiar: “I ride a big bike and it feels like my front end dives at every stop light.”

I’ve heard this complaint countless times and figured today’s as good a time as any to walk you through a fork dive event and detail a solution to correct it.

During initial braking, the shear girth of a big touring machine transfers forward and quickly overwhelms the factory suspension.  The result is what we know as fork dive or brake dive.  Although all motorcycles experience this to some degree, the sensation is particularly noticeable on touring rigs and is exacerbated by their weight.

So what’s the solution?  While the … Continue Reading

| Comments: 3 Comments | Categorized Under: Product Information

J&P Tech Tip: Suspension and Bike Fitment

8

March 10, 2010 | By: David Zemla

Editor’s note: As of late, we’ve noticed that rider and bike fitment are hot topics, especially within the big V-Twin segment of the motorcycle marketplace. While fitment isn’t necessarily a new concept, it is one that deserves a fair amount of coverage, and who better to address it than someone from Progressive Suspension, a company that is entirely dedicated to creating innovative and high performance suspension products that directly enhance rider and bike fitment. With those thoughts in mind, please help us in welcoming Progressive Suspension’s David Zemla, who with today’s post will be a regular contributor here on the J&P blog.

Get in a typical car and … Continue Reading

| Comments: 8 Comments | Categorized Under: Product Information