Showing posts with label screamin' eagle. Show all posts
Showing posts with label screamin' eagle. Show all posts

Sunday, August 24, 2008

Screamin Eagle slip-on mufflers

I've cleaned the Sportster and temporarily stripped it down; removing the windscreen and saddlebags. I was feeling nostalgic for the more simple sporty appearance and riding of the bike. It's amazing how much the windscreen changes the look of the bike – not to mention the feel of wind-in-your-face riding. In the attached pictures you can see the Harley-Davidson XL with the Tour Master saddlebag center strap across the rear fender. Later, I loosened the seat and removed the center strap.

I've finally recorded the Sportster with the Screamin Eagle mufflers. The mufflers are very easy to install, only requiring the loosening of the clamps, the removal of the four mounting bolts, and the loosening of the lower bracket for the rear pipe. Removing the original mufflers required the application of a little force and some twisting. The Screamin Eagle mufflers provided the sound I was hoping for and based on seat-of-the-pants measurements improved the throttle response.


According to the Harley-Davidson dyno metrics the Screamin Eagle mufflers for the Sportster add about 5 or 6 horsepower and 10 foot pounds of torque. Pretty good price/performance results for bolt-on parts. With the slip-on mufflers the Sportster has great sound, not too loud in the lower RPM range, but with a twist of the wrist they provide a great result. I use the added sound to 'notify' drivers when I'm passing them, especially if I see them on the phone or not paying attention to what is going on around them.

BTW, after doing some research I decided not to add the Screamin Eagle intake. From what I've read on Sportster related forums the performance gains from the intake are minimal given the comparative costs. Upgrading the intake requires either taking the Sportster to the dealer for an update to the engine management computer or buying and tuning an aftermarket engine control unit. Given the cost and hassle of the two options I made the choice to take the less complex route. I may change my mind in future though I am more inclined to update the rear shocks and front springs with products from Progressive Suspension.

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Friday, August 15, 2008

Dry summer

It’s been a while since I’ve written about my bike; been a busy 6 months and I’ve not had much time for blogging or riding for that matter. It’s a real shame that summer has pretty much past by and I’ve not had more than a day of riding. I do plan on getting out this weekend for at least a couple of hours; I could use some time on the road, focused on the ride. There’s no better way to clear your head then to get out and ride.

I will post some updates on the bike. There’ve been some changes since the last posts including Screamin Eagle pipes, and some other accessories. I’ll get a video clip of the bike running with the pipes so you can compare the difference in sound. The sound from the pipes is great, not too loud but you can make yourself heard when needed.

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Friday, September 21, 2007

Sound of Stock 2008 Sportster XL1200C Custom

As part of what appears to becoming a “sounds of Harley-Davidson” series I’ve captured some footage of my stock 2008 Sportster XL1200C Custom. This bike is stock including the pipes. The Sportster has about 370 miles on it so is not fully broken in yet; I expect the pipes will get louder over time. You can compare this with the sound of the Sportster Custom with Harley’s Screamin’ Eagle pipes in the video posted earlier this month.

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Tuesday, September 18, 2007

NPR Report on Motorcycle Makers Responding to Noise Complaints

When it comes to Harley-Davidson motorcycles “loud pipes save lives” seems to be the battle cry of the masses. When I first rode a HD it was running Screamin’ Eagle slip-ons and I thought them loud, though enjoyable, at the time.

When I bought my Sportster Custom I looked into the Screamin’ Eagle option and was told by the dealer rep that those pipes “weren’t very loud.” They seem plenty loud to me and I know it would annoy my neighbors to be running anything much louder than stock up and down our suburban street. The greatest benefit I see in the Screamin' Eagle pipes is in torque and horsepower, as shown in the dyno chart.

National Public Radio just produced a segment on the topic of loud pipes including comments from representatives of The Motor Company. The biggest concerns are the “noise laws” communities including New York City, Denver, and Lancaster, PA are passing against loud pipes. The concern is this becomes a slippery-slope that leads to further regulation of the sport.

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Tuesday, September 4, 2007

Sound of the Sportster XL1200C


Not the subtlest of sounds ...

Harley-Davidson motors may not be the most refined engines on the planet but they do have a primal charm that seems most authenticate from products made in the USA. The Screamin' Eagle pipes make the sound of the 1200cc engine more raw and (obviously) louder.

In this clip you can also hear the sound of the fuel injectors tapping away, it is most notable when I move the camera to the left side of the engine.

Overall a great sound a part of the complete Harley package.

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Test Riding the Harley-Davidson Sportster

Riding the Harley-Davidson Sportster through the Center of the Sun ...

A work friend, Jesus, and I rented Harleys from the local dealer, Biggs in San Marcos. This is the first time either of us had ridden Harleys and neither of use was that comfortable with spending an extended amount of time on someone else's bike, but hey, that's why they offer rentals. I rented a Sportster XL1200C Custom and Jesus a Dyna Wide Glide, apparently the next smaller bike in the Harley-Davidson line. After signing papers and getting the run-down on the bikes we left Biggs at 10AM. It was already hot in San Marcos, probably in the high 80’s and rapidly climbing.

With jackets on we rode up the 395 past the 76 and into Fallbrook. This was the period of getting used to the XL1200 motor. I’ve ridden v-twins in the past but nothing of this size (Suzuki’s SV650 to be exact). At first the Harley motor seemed very rough, with the momentum of the internal mass, crank, pistons, etc. quite noticeable, especially at low RPMs where the Suzuki is extremely smooth. The Screamin' Eagle pipes were also a lot louder than what I am used to on my bikes, cracking out a low bark that increased in urgency up the power-band. The Sportster Custom has the forward controls and this was also a new experience. My initial impressions were very mixed with the Harley but as we rode my comfort level with the machine began to increase.

When we stopped in Fallbrook the temperature had to be over 100-degrees. We chugged some water, stuffed our jackets in the saddlebags, and applied another round of sunscreen. From Fallbrook we took the 76 East, looking for more open roads and the opportunity to get a sense of how the Sportster handles the twistys. By now had become very comfortable with the riding position and most of the controls. The only thing really throwing me off is the Harley-Davidson turn-signal configuration with a button on each hand control and, something I kept forgetting, automatic cancelling once you make the turn. Obviously, these are not significantly problematic issues, they just take some getting used to. The forward controls quickly grew on me, though I think it would be ideal to have standard pegs and highway bars for maximum comfort. Being able to weight the pegs would provide better feel for cornering and allow the rider to take some of the load off the back.

Jesus and I rode into the Pala Casino around noon and the temperature had to be 107-degrees. After cooling down we headed back out, going from the 76 to the 79 and down into Santa Ysabel where we stopped for Gatorade. On that stretch we encountered a few drops of rain from some of the clouds overhead. The cloud cover really helped drop the temperature and this leg of the ride became very comfortable.

Having had a couple of hours on the Harley I started to take in the sounds of the bike. Being a bit of a gear head I tend to be pretty tuned into the sound and feel of my machines. One of the first things I noticed with the Sportster is the fairly loud fuel injectors. They definitely make a noticeable sound at idle and constant, cruising throttle. It’s not a bad or annoying sound, just something that is very discernable in the fuel injected version. Second I notice pinging or pre-detonation that I’m guessing was caused by a combination of the heat and shite gas provided by the previous renter. The engine knock became very apparent with a twist of the throttle – I don’t believe these bikes have knock sensors, electronic sensors used on fuel injected cars to detect pre-detonation and retard timing, so the knock was not entirely unexpected. Third, I noticed rattling coming from several unidentified locations around the engine at certain ranges of the power band. I’m not sure if there were loose chrome bits or if this is “normal” for Harleys, either way, it wasn’t a big deal.

By now I was very happy with the Sportster and the appeal of the 1200 v-twin really became apparent. Unlike my other bikes the Harley is extremely relaxed, as the rider you feel in control and well positioned. The bike handles remarkably well, much better than I had expected, and by this time I was used to the hum of the engine through the Screamin' Eagle pipes. Riding through the back country, sun on my arms, the pulse of the motor underneath, the tone of the engine put a smile on face – this is what riding should be like.

We made it through Ramona, down into Escondido (friggin HOT) and to the gas station to fill up the Sporty before taking it back to Biggs. We had completed about 130 miles and consumed 2.8 gallons of gas! Amazing mileage for a fun bike and an awesome ride. This experience has really changed my perceptions of Harley-Davidson’s motorcycles, its given me a real appreciation of the machines and the experience of the ride.

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