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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Tyres
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<blockquote data-quote="davidd" data-source="post: 90319" data-attributes="member: 1177"><p>Ground clearance is always a concern. There is nothing wrong with 19" and 18" or 19" and 19." Most racers are looking for more than good handling, they are looking for an advantage. It involves juggling the compromises. Steepening the rake, with tire selection for quicker handling or quickening the steering by going with smaller wheels. Often, you don't realize how fast or slow your bike steers until you go to a track like Laguna or Cresson, Texas and find yourself dealing with cork screws. If you are not passing bikes in corners it doesn't matter as much how quickly you can change lines in a corner.</p><p></p><p>It is perfectly reasonable to make a compromise until the time the rider thinks he needs something different. As an example, a new rider may want a soft rear tire until the time he has become comfortable with sliding the rear, then he may want a slightly harder tire.</p><p></p><p>Another compromise is tire width. A wider tire will generally provide more traction, but it difficult to know how much more traction you need or can put to use. The downside is the wider tire moves the contact patch further away from the center line of the bike. Then you have to lean the bike over more to get around the same corner and you have clearance issues.</p><p></p><p>Add to this that the resistance to turning the front wheel increases by the 4th power with wheel diameter increase and you are juggling a lot of compromises. The amateur racer has to make the best guesses on many items an pick the things that may have to be changed in the future.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 90319, member: 1177"] Ground clearance is always a concern. There is nothing wrong with 19" and 18" or 19" and 19." Most racers are looking for more than good handling, they are looking for an advantage. It involves juggling the compromises. Steepening the rake, with tire selection for quicker handling or quickening the steering by going with smaller wheels. Often, you don't realize how fast or slow your bike steers until you go to a track like Laguna or Cresson, Texas and find yourself dealing with cork screws. If you are not passing bikes in corners it doesn't matter as much how quickly you can change lines in a corner. It is perfectly reasonable to make a compromise until the time the rider thinks he needs something different. As an example, a new rider may want a soft rear tire until the time he has become comfortable with sliding the rear, then he may want a slightly harder tire. Another compromise is tire width. A wider tire will generally provide more traction, but it difficult to know how much more traction you need or can put to use. The downside is the wider tire moves the contact patch further away from the center line of the bike. Then you have to lean the bike over more to get around the same corner and you have clearance issues. Add to this that the resistance to turning the front wheel increases by the 4th power with wheel diameter increase and you are juggling a lot of compromises. The amateur racer has to make the best guesses on many items an pick the things that may have to be changed in the future. David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Tyres
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