Question about Yamaha FZR 250 R Motorcycles

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My bike have big problem its cant get high speed

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Change the plugs

Posted on Nov 14, 2009

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How much is the lifespan of motorcycle tyre


front tire , depends on the speed at which it is ridden and could be lots of miles
rear tire , big power machine , hot road, high speed , possibly 2,000 miles
tire wear is very much in the hands of the operator and the attitude to performance
to get a better idea talk with bike shops of what you could expect out of your tires

Dec 11, 2016 | Motorcycles

1 Answer

Bike developed a wobble, has side to side movement in front wheel


First check the tire-pressure, then the fork oil; see if the wheel has a loose bearing play.

Speed Wobble - When The Bike Shakes Its Head - Cycling ...

cyclingtips.com.au/2011/.../speed-wobble-when-the-bike-shakes-its-head...
Speed wobble is the term used to describe a quick oscillation of the handlebars ... 2 A scenario seen relatively often is that the top tube of the bike is under-built.

Road Bike High Speed Wobble 1st person view ( Shimmy ...

? 1:27
www.youtube.com/watch?v=hMNFS2ap3fU

Jun 23, 2014 - Uploaded by Aurimas Petraitis
Road Bike High Speed Wobble 1st person view ( Shimmy ) .... causing my bike to be so twitchy on descents ...

Oct 30, 2015 | Motorcycles

1 Answer

I have gsx 400 f 1988 red speed turns on when past the 6000 rotation


means dont go that high-cud blow engine-its only a 400-not made like the big boys--thats a classic bike harder to find parts

Jun 09, 2011 | 1981 Suzuki GSX 400 F

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I have a Huffy Savannah model 56770 16 speed. How do I shift into gear 7 through 16 ?


Google "bicycle shifting technique", for example:
http://coachlevi.com/cycling/complete-beginner-guide-to-bicycle-gears-shifting/
You should NEVER run cross-chained (big-big or small-small). The drive train performs best when the chainline is as close to straight as possible.
Excess sideways stress on the chain will wear it out prematurely and decrease its normal efficiency.
To demonstrate this for yourself, put the bike in the same combination of gears you're having a problem with. Get behind the bike and look straight along the top of the chain. As you can see the line of the chain is a mild zig-zag where it is parallel to the bike at each gear but needs to angle across the drivetrain in between. On some bikes the chain might even come in contact with the next larger chainring when used this way.
The big-big combo uses up all available chain length and the rear derailleur will be pulled toward the front of the bike, sometimes so far that it is in danger of being snapped off.
THERE IS NO UPSIDE TO CROSS-CHAINING.
As you can see, the rear derailleur is probably not long enough to **** up all the slack this gear combination creates. There are other combinations that would yield the equivalent gear ratio without either stressing the drivetrain or dropping the chain.
The basics of shifting are these:
1) The big ring and right side of the cassette in back are for speed.
2) The small ring and the left side of the cassette are for high torque, lower speed
Ancient bike wisdom for beginners: If your legs ache, shift down. If your lungs ache, shift up.

Apr 25, 2011 | Huffy Cycling

1 Answer

I have shimano rd6500 rear derailleurs. when chain is on small chain-ring and smaller rear sprockets the derailleur cage is rubbing against the chain.How do i tension chain to hold cage away from chain,...


If you learn to shift correctly this won't happen..

Google bicycle shifting technique, for example:

http://coachlevi.com/cycling/complete-beginner-guide-to-bicycle-gears-shifting/

You should NEVER run cross-chained (big-big or small-small). The drive train performs best when the chainline is as close to straight as possible. Excess sideways stress on the chain will wear it out prematurely and increase its normal efficiency.

To demonstrate this for yourself, put the bike in the same combination of gears you're having a problem with. Get behind the bike and look staright along the top of the chain. As you can see the line of the chain is a mild zig-zag where it is parallel to the bike at each gear but needs to angle across the drivetrain in between. On some bikes the chain might even come in contact with the next larger chainring when used this way.


If you can shift to the big-big combination without snapping the rear derailleur off, you're lucky. The big-big combo uses up all available chain length and the rear derailleur will be pulled toward the front of the bike, sometimes so far that it is in danger of being snapped off.

THERE IS NO UPSIDE TO CROSS-CHAINING.

As you can see, the rear derailleur is not long enough to **** up all the slack this gear combination creates. There are other combinations that would yield the equivalent gear ratio without either stressing the drivetrain or dropping the chain.

The basics of shifting are these:
1) The big ring and right side of the cassette in back are for speed.
2) The small ring and the left side of the cassette are for high torque, lower speed

Feb 24, 2010 | Shimano 105 Triple Braze On Front...

1 Answer

1972 Honda CB750K2. Clutch started slipping at high speed (over 75mph). No noticeable slipping at lower speeds even when punching it through the gears. Also has a slight chatter when sitting in nuetral,...


hi,it sounds like your bike is just about due for a new set of clutch plates(my gsxr race bike did the same thing,put in new plates..problem gone),as far as the rattle or chatter this is normally caused by weak clutch springs or in some cases the clutch basket its self may be worn,not a big job to replace either,most clutch kits come with new fibre plates ,new steel plates and new springs,fit a new kit in the bike and i think most if not all your problems will disappear...cheers

Feb 18, 2010 | 1984 Honda CB 700 SC Nighthawk

1 Answer

Shake from left to right at high speeds.


Check for steering head bearing problems. But most likely you have a cruiser that is not supposed to be driven at high speeds and this is normal. Sport bikes use a steering dampner to solve that problem.

Jun 13, 2009 | 2005 Victory Vegas

2 Answers

Clueless


The rear cassette is only a part of the solution. The front gearset also comes with a variety of ring/teeth configurations.
Plenty on new bikes come with a 'compact' gearset (2 front rings, 10 speed rear cassette). That is generally a lower gear ration to aid in hill climbing.
The rear cassettes are easily interchanged (must be same brand as what the hub uses). Of the 3 you listed; the 11-26 would be "Fastest".

If you want to go fast, and are fit enough to power it at speed for a good duration... look for a large crank ring (greatest number of teeth) and a small cassette # (like the 11-26 you listed). It's a sinple ratio calculation. What you're looking for is the most amount of rear wheel rotations per crank rotation. That is achieved by a big (lots of teeth) front ring and a small (not many teeth) rear cassette ring.

While at the bike store, put the bike in it's highest gear (biggest ring on the crankset, smallest ring on the wheel cassette). Lift the rear wheel off the ground and count the amount of rear wheel rotations for 1 crank rotaion.

A triathalon/time-trial bike will come with a ratio of about 5.5-6.5 rotatotions of the rear wheel for each rotation of the crank.
An endurance road bike (with compact gearset) might come with about 4.25 rear wheel rotations for each crank rotation.

Tri/TT bikes are made to put the rider in the most areodynamic position possible thereby reducing the wind drag and making pedaling easier (so you can manage a higher gear ratio). Endurance road bikes are designed to put the rider in a confortable position (more upright) for all day riding.

Get the bike shop to fit you properly to the bike you choose, not all shops offer this. There are professional bike fitters that can help you when you get close.

Hope that helps

Apr 30, 2009 | Sram 850 8 Speed Cassette 11-32t Mountain...

2 Answers

LOOKING FOR RPM DIAGRAM AND SHFTING SPEEDS FOR YAMAHA VSTAR650


I want to know- if there is a big difference between a 2001 v-star classic and , say a 2005 or 06 v star classic. Are the newer ones lighter, or advanced in some way, enough to make a difference?

Mar 02, 2009 | 2001 Yamaha V Star 1100 Classic

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