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Saddle Slim-Down

I had some time recently to slim-down my saddle. 

My goals were to remove and shape redundant rear cushion material so I could:  a.) sit back farther & lower in seat to fit me better; b.) improve the overall profile looks of the bike

Bottom line:  either I did a poor job or I had overestimated the comfort payoff.

Below are my steps and advice for you if you take on this modification.

PART 1

click here for PART 2

 

I carefully removed the staples with a small screw driver and needle-nose pliers.


 

Once the seat cover was off, I found the cushion covered in a "shower cap"-like plastic bag.  It had holes in it , as did the stitching under my cover. (more on that later)

Consider replacing the cover material with marine vinyl.  I will if I do this again.

 

The cushion comes right off the plastic seat pan.

 

This cushion was SOAKED like a sponge.  What's upsetting is that the bike hadn't been washed in a month and the water was just sitting in there.  (You might want to check your cushion for dampness, even if you don't plan on trimming the cushion)

 

The I put the seat on the bike and drew my marks.  I wanted a flatter seat so I could sit back farther. The rear slid me down and that gave me sort of a wedgie over time in the saddle.    Plus I thought I could lower the height for more of a chopper look.  Plus, I thought my solo seat looked odd very high in the rear of the seat. 

This was going to be great...

 

I used an old hacksaw  and began to slice.  If the rest of the trimming were this easy, I would have been happier.  (I'd definitely use a new saw blade next time; and I did stumble across 5 new blades after this was all over!)

 

I should have let the thing dry out before I sliced.  It was like slicing a damp sponge. 

I would put it on and sit on it every so often to see how I liked it.  (Yes, my ass got wet during these trials)

 

Next I sanded it with minimal shaping effect.  Again, I somewhat attribute this to the cushion being damp.

This was the final shape I came up with.

 

Once my "hack job" was done, I rebagged it in a trash bag, shower-capped it, and kept the bag opening out the rear of the seat (trimmed it later when covering.  not sure if this will keep it dry under there or not) 

Note:  I air and blow drier dried the cushion as best I could before recovering.

 

Next, I covered these bolts with cardboard to protect the plastic bag from getting holes which leads to the sponge effect.

 

When I re-stapled the cover on, I noticed it was crooked and bunched up in a spot.  I pulled out the staples on one side and re-aligned it okay.

The cover isn't as form-fitting as I hoped, but it passes. 

 

Due to my impatience, wet cushion, dull hacksaw, etc., you can see that the right rear side is higher than the  left.  This looks somewhat odd, but is so high in the seat that it doesn't pitch me sideways when sitting on it.

There's always next time!

 

Here's a side shot.  It does look slimmer.  (It would look more slim in this shot if I did slice more off the top right rear)

UPDATE PHOTO:

Two rows up I mention that I trimmed unevenly.  Not sure if that's true, but I was able to tighten the pull and staple the right rear of the seat to compress it so that the seat looks even now!

 

Another look.

Final thoughts:

After test runs, I decided that the original cushion really does make the ride more comfortable.  I felt more vibrations under my ass after cutting out rear seat cushion area.  I was sitting a bit lower and back like I wanted, but the improvement wasn't as dramatic as I had hoped.

Perhaps I was over analyzing things a bit.  I did notice my ass getting somewhat numb from the extra pounding and vibration (yes, I said vibration) I felt.  Again, this could be in my head, as I was really focusing on my ass comfort!  I put about 1 and 1/2 hours on the new seat.  I thought I'd get more time-in-the-saddle-comfort from the mod than I did.

If you're thinking about doing this mod, it's harder than it looks.  It's not too difficult, but take your time and really know the shape you want.  Make sure the seat is dry and you have a sharp object to cut with.  My philosophy was, "hey if I screw it up no big deal." I'd rate my job a 6 out of 10.  I definately learned some do's and don'ts.

I will perhaps re-do this mod in the future.  What I'd like to do is get one of those old-time saddle-style seats and figure out a way to mount it. 

I've also done some research on seat cushions, etc.  Motorcycle Cruiser did a story and best bang for buck was the beaded seat.  Ugly perhaps, but they swear by them for the money.  The one they tested was $15.  I can't find that one, but I did find this one for about $35 from Sampson.

Seat Slim-down resources: 

http://www.heise-workstations.de/ls650/Fragen/messages/24309.html

Also, this article was recently in Motorcyclist magazine:

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