What did you do to your bike today?

Discussion in 'Technical & Maintenance' started by fortech, Oct 10, 2014.

  1. skibum69

    skibum69 Well-Known Member

    Good luck my friend! I just ordered a set of signal repeaters for my 1100S, should look pretty cool when I get them mounted
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    Last edited: May 21, 2020
  2. Wayne

    Wayne Well-Known Member

    Installed a Motobatt battery in the Varadero today. Two year warranty, and points on four corners so you can bolt on the terminals and position the battery correctly.

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    Bob likes this.
  3. regfu

    regfu New Member

    Hey Mike, where'd you snag them lite-rings? They sure are "purty"!!
     
  4. skibum69

    skibum69 Well-Known Member

    From a guy on the Pelican Parts R1100S forum, he only did 5 sets.
     
  5. Trash

    Trash Well-Known Member

    After a surprising 11,000 miles out of my TKC-70s, I decided to give a set of the relatively new Michelin Anakee Adventure tires a try. My go to shop in Phillips, twenty minutes away, closed down over the Winter, so I located another shop in Hayward, an hour away, to get the work done. Can't be too picky in the Great North Woods!

    The good news was the fellow did a real nice job for about half the price of the previous shop. The bad news was he couldn't balance the tires. Thanks to the internet of things, I found a machine shop that fabricated everything I need to balance the tires on both my bikes.

    Tires are mounted up, and I should be good for another 10,000 miles or so. :cool: IMG_20200522_152756252.jpg
     
    TonisToo and skibum69 like this.
  6. Bob

    Bob Active Member

    Nice GS Trash. What's with the oval hole in the windshield?
     
  7. Trash

    Trash Well-Known Member

    I have used California Scientific windscreens on a number of my motorcycles with excellent results.
    They don’t look pretty, but instead are usually very effective at their appointed tasks.
    Mark Lawrence, the Owner has extensive training in aerodynamics, so I value his opinions.

    Here is an excerpt from his website with a good explanation on windscreen design:

    Nearly all of our windshields have vents. These vents are part of the aerodynamic design of the shield, to reduce turbulence and noise. They are not there to make a flow of air on the rider. When you're riding on the highway, any windshield is pushing air away from the rider. This leaves a low-pressure pocket between the windshield and the rider. Some riders feel this low-pressure area as a push on their shoulders, "back pressure." The air flowing past the windshield wants to drop into this low pressure area. If the outside air is allowed to spill into the area between the windshield and the rider, the result is turbulence, noise, and drafts. When outside air spills into the rider area, it almost always falls in a curved path, causing spinning vortices of air. These vortices are noisy and can cause the battering and hammering on your helmet reported by some riders. Our windshields and vents are designed to funnel air into the rider region to relieve this low pressure area and greatly reduce the tendency of outside air to spill in. The vents are designed so that the air coming through them is quickly dispersed, leaving almost no detectable air flow at the rider. Our goal is to produce almost completely still air on the rider with no back pressure.

    Why don't we put louvers on our vents? Air sticks to any surface; immediately at the surface the air is not moving. As you move away from the surface the air speed picks up with distance. The curve of airspeed vs. distance from the surface is called a Poisson curve. As you go to higher and higher speeds the Poisson curves from adjacent surfaces on the louvers move outwards until they touch. When they touch, that's the maximum air flow speed for that gap. Typical 1/2" louvers will choke off air flow to a maximum speed around 40 mph or so; above that speed you need more and more air flow to compensate for the growing vacuum behind the windshield, but the louvers have maxed out. So the louvered vent becomes less and less effective as your speed increases to 80 mph or beyond, and the windshield becomes more noisy and has more turbulence as you pick up speed.

    I get a lot of emails, "Can you make me a windshield with a reverse flip to kick the air up over my head?" Yes, I can, but I won't. Air is a spring - there are shock absorbers made with only air as the spring. When you kick a spring, it kicks back. Putting energy into the air like this is exactly the opposite of what we're all about. Windshields with reverse flips and non-fair shapes generate semi-periodic chaotic swirls of turbulent air, called Von Karman vortices, after Theodore Von Karman. These vortices, or pockets of turbulence, grow as they move away from your windshield. If you feel your head being rocked or even slammed side to side or front to back as you ride, this is Von Karman vortices at work. Some manufacturers, to my own astonishment, actually claim to produce these vortices on purpose, apparently with the idea that some turbulence is "good" and will somehow perhaps cancel out the "bad turbulence." We work very hard with the design of the shape of our windshields and the location and size of the vents to eliminate all Von Karman vortices.
     
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  8. Bob

    Bob Active Member

    Thanks for the informative replyTrash. That's very practical sizing info on the California Scientific site.
     
  9. TonisToo

    TonisToo Active Member

    He told me it was a "speed hole" and now I'm questioning everything he told me.
     
  10. Trash

    Trash Well-Known Member

    HaHaHa!
    I was just trying to be polite.
    The truth is, my GS is faster than your GS, even with my ugly windscreen! :p
     
  11. Backdraft

    Backdraft Active Member

    No mine is faster... Blah!

    Lol....
     
  12. Wayne

    Wayne Well-Known Member

    My windscreen is a two piece, with a similar hole. More designed like a spoiler...for some down force on the front to keep the wheel down :p
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  13. Wayne

    Wayne Well-Known Member

    Purell Mod!

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    Relic, Bob and skibum69 like this.
  14. murph

    murph Well-Known Member

  15. skibum69

    skibum69 Well-Known Member

    Got the 640 out of the basement and ran it for a few minutes to look for the oil leak again. It seems to be weeping out of the connection between the spin on oil filter and the frame. I check the banjo bolt and oil line just above it. So I laid the bike down and again took off the filter and checked for and dirt etc. Then spun it back on tight. Still leaking. I think I need to get another filter and give that a go.
     
  16. RossKean

    RossKean Active Member

    What are you using for a filter? I use an automotive filter and some brands changed their design. The base plate went from concave to convex and will not seal properly - threads bottom out before the seal makes proper contact and a leak ensues. This has been an issue with Bosch, Purolator and some others. I am currently using Mobil M1-110 and it has been OK.

    See photo, attached - the one on the left is the "new" design although both have the same part number.
    filters.jpg
     
    Last edited: May 31, 2020 at 1:44 PM
  17. Bob

    Bob Active Member

    Thanks for the pic Wayne, first time I've seen that design. Looks like it has 280 CCA if I'm reading the specs correctly which is plenty. Got the motobatt.ca website bookmarked for future reference.
     
  18. Wayne

    Wayne Well-Known Member

    My oem Yuasa battery had 310CCA, but that same battery was hard to find. CCA is more important for cold weather anyway. Amp hours is a better thing to look for. Plus something with a good warranty.
     
  19. skibum69

    skibum69 Well-Known Member

    Whatever mine is is an aftermarket, I'll have to order more.
     
  20. skibum69

    skibum69 Well-Known Member

    Of course the thing of note is that my new little emblem lights are wired for a R1200S and it's different than my 1100.I need to get pics of my plugs and the seller is going to try for a different fix.
     

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