The dynamic balancing is basically the same principle for balancing a motor. I only did static balance when I did my VW engines, which is good for any RPM because it balances the extended parts of the reciprocating weight so that the opposing pistons and rods are the same. Dynamically balancing a tire is more effective because the inside and outside are not exactly the same, no matter how precise the tire. If a tire takes an exceptionally large amount of weight, it is likely to be out of round and cause a definite shhimmy, or vibration concurring with the rhythm of the tire at speed. I recently returned two inexpensive tires to WallyWorld on my wife's car because of that, and made them put on a more expensive brand and there was no more shimmy, and the weights were around a quarter ounce to a half ounce instead of over an ounce and a half to two each. It was actually almost visibly noticable as they were rolling the tires to the truck to bring to the car (someone had slashed the tires while she was at work, so I bought them and put them on and then because of the shimmy drove straight to WW and exchanged them). Now, on my 250, the front tire caused a bit of trouble when replacing the first time, because I didn't feel it neccessary to inflate it before putting it on the ground, so I had an out of round condition. I took out the air, jacked it up, sprayed a soap lubricant solution on it, adjusted the bead evenly around the rim, and then inflated it slowly with my air tank. No more out of round... Not quite smooth as glass, but no shakes. BTW, even though the old 305 Super Hawks would rev to around 10,000rpm stock, the performance improved markedly with dynamic balance and blueprinting. My buddy accidentally did around 12,000rpm after those services, plus cam and heavier springs; he scared himself brown-on-the-seat when he looked down and saw the speed and revs and that he was still in 2d gear and reflexively and very quickly shifted into 3rd and let the lever go. The wheelie he did came quite unexpectedly..... I couldn't tell you what the power was, but stock it was 30hp. This was balanced, blueprinted, cam, and springs changed. It would still idle, but roughly. For a light bike like that it was fast.
Stanley ________________________________ From: Kyle Munz <[email protected]> To: [email protected] Sent: Mon, August 23, 2010 10:45:14 AM Subject: Re: [Nighthawk Lovers] Re: Tires Dont' forget Nitrogen in those junk fees. That last set of tires I got they offered "Dynamic Balancing" or whatever they called it. They mount the tire, spin it, the computer tells them where to mark the rim and the tire, then unmount it, sping it until the marks line up, remount it, and supposedly this way they don't have to use as many weights. Sounds great in theory, but I kind of feel like that should just be what they do anyhow. -Kyle On Mon, Aug 23, 2010 at 10:36 AM, surfswab <[email protected]> wrote: Rather than settle on a tire that's cheap enuf >for your budget, but not the best for your application, try reversing >the process. > >Find out what Jeep owners prefer (Google for forums), then look for >deals for that particular tire. There are all kinds of tire >discounters out there -- Kauffman, NTW and Tire Rack to name a few, >depending on where you live. > >Firestone, Pep Boys, B.F. Goodrich also offer special deals >occasionally (buy 3, get one free, or similar) usually advertised in >the sports section of the Sunday paper. > >Walmart or Kmart stores with service bays also have deals now and >then. > >Beware of the "junk fee" costs as well. Mounting, balancing, valves, >old tire disposal, taxes, etc. can add up to a sizeable chunk of >change beyond the price of the tire. > >A vendor offering free mounting and balancing may have a slightly >higher price on the rubber, but can often save you some bucks >overall. So it's wise to know the out-the-door price in advance to >avoid surprises and make every dollar count. > > > > > >-- >You received this message because you are subscribed to the Google Groups >"Nighthawk Motorcycle Lovers!" group. >To post to this group, send email to [email protected]. >To unsubscribe from this group, send email to >[email protected]. >For more options, visit this group at >http://groups.google.com/group/nighthawk_lovers?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en. -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
