Accelerating, changing gears: Difference between revisions

(6 intermediate revisions by the same user not shown)

Line 3:

====Upshifting====

You can shift anywhere from 5 to 13k, depending on how fast you're going (accelerating). If you're poking along behind a grocery-getter from a stop light, a shift point of ~~5 or~~ 6k makes sense. If you're accelerating normally and want a good compromise between performance and fuel efficiency, shift around 8-10k. If you're trying to quiet the rowdy kids next to you in daddy's 318i, cook it up to 12k before hitting the next gear. Cruising revs should be between 4-10k.

You can shift anywhere from 6 to 13k, depending on how fast you're going (accelerating). If you're poking along behind a grocery-getter from a stop light, a shift point of 6k makes sense. If you're accelerating normally and want a good compromise between performance and fuel efficiency, shift around 8-10k. If you're trying to quiet the rowdy kids next to you in daddy's 318i, cook it up to 12k before hitting the next gear. Cruising revs should be between 6-10k.

Shown here are torque (L) and horsepower (R) charts from Motorcycle.com's<br> [http://www.motorcycle.com/shoot-outs/25-caliber-shootout-12930.htm .25 caliber shootout]. The EX250 is the pink line.

Line 22:

When accelerating, you can pretty much downshift whenever you want a power boost. However, downshifting when doing anything over 11k rpm is pretty pointless, as you're already in your powerband. You want to try to downshift to keep revs between 9 and 12k; this is where you get the most tug for each twist of the wrist. You should let off the throttle momentarily while quickly disengaging the clutch and kicking it down, then opening the throttle up wide to match engine speed as you release the clutch lever again; this will give you the power you need to accelerate effectively.

====RPM guidelines====

The EX250 engine, along with those on most 'sporty' bikes, was designed for high-rpm use. There seem to be some compromises which make it harder to use at engine speeds lower than about 6000 rpm. Basically, there's no reason to ride any lower than 5000 rpm, except for while sitting at a light. Even then, you can't depend upon the engine for any power that far down.

The following suggestions are just that. Get used to what works for you, and keep in mind that your Ninja '''likes''' to work at high engine speeds. These are not guidelines for how to get the best gas mileage from your engine. However, they will help you avoid stumbling at low rpm and keep the engine spinning fast enough to be of some use if you need to suddenly go faster.

* Mellow takeoff from a light: 3-4000 rpm

* Aggressive take-off from a light: 5-6000, and only use small throttle openings below 5000 (less than 1/3 throttle).

* Never cruise below 6000 rpm

* Never ride in-city at lower than 7000; this gives you more available power if you need to move

* In spirited riding (twisties) never drop below 8000

* On the track, 9000 is about the lower limit, usually aiming for 9-11,000

====Clutchless shifting====

Line 27:

Line 40:

Clutchless shifting can easily be done on a motorcycle: it's just a matter of matching the rpms. On upshifts it's just a matter of backing off the throttle for an instant as you bang the box into the next gear. On downshifts you have to rev the engine up a bit as you drop a gear. Of course, the clutch is there for a reason, and shifting without it will wear your tranny out more quickly. In short, the only place this technique really has a place is on the racetrack, where tiny fractions of a second can make the difference between first and second place.

Some advice? Learn how to do it and then don't, unless some large person named "Mad Dog Al" is chasing you with a chainsaw.

Some advice? [[Can I ride my bike home if the clutch cable breaks?|Learn how]] to do it and then don't, unless some large person named "Mad Dog Al" is chasing you with a chainsaw.

====Shifting when stopped====

Line 36:

Line 49:

Note that it's easier and safer to shift down as you slow down (while the bike is still rolling), rather than waiting until you're stopped.

====You have to be moving to shift====

The EX250 has the Kawasaki '''positive neutral finder'''. This means the bike is set up to keep you from shifting past neutral at a stoplight and looking stupidly at your left foot while you go back and forth between 1st and 2nd. This is usually a good feature, but you have to remember a few things about it.

In order to shift past neutral the rear wheel has to be turning. This usually means that the bike is moving. The rear wheel has to be turning ''and'' you also must be in first gear. You can't just turn the rear wheel in neutral and shift up; you must go down into first and then shift.

You can shift through the gears on the centerstand with the bike running, but this is not recommended. If the centerstand gives way you could end up chasing the bike several hundred meters up the road or digging it out of the end of your garage.

====Avoiding missed shifts or false neutrals====

Line 50:

Line 71:

When you let the clutch out, the pressure on the gearchange lever will cause the transmission to slip into gear if it wasn't already. If you get into this habit, you'll never hit a false neutral again.

Make sure to avoid the common fault of failing to allow the shift lever to fall all the way to the bottom between up-shifts. This will cause the bike to miss shifts.

@@ Line 3: / Line 3: @@
 ====Upshifting====
-You can shift anywhere from 5 to 13k, depending on how fast you're going (accelerating). If you're poking along behind a grocery-getter from a stop light, a shift point of 5 or 6k makes sense. If you're accelerating normally and want a good compromise between performance and fuel efficiency, shift around 8-10k. If you're trying to quiet the rowdy kids next to you in daddy's 318i, cook it up to 12k before hitting the next gear. Cruising revs should be between 4-10k.
+You can shift anywhere from 6 to 13k, depending on how fast you're going (accelerating). If you're poking along behind a grocery-getter from a stop light, a shift point of 6k makes sense. If you're accelerating normally and want a good compromise between performance and fuel efficiency, shift around 8-10k. If you're trying to quiet the rowdy kids next to you in daddy's 318i, cook it up to 12k before hitting the next gear. Cruising revs should be between 6-10k.
 Shown here are torque (L) and horsepower (R) charts from Motorcycle.com's<br> [http://www.motorcycle.com/shoot-outs/25-caliber-shootout-12930.htm .25 caliber shootout]. The EX250 is the pink line.
@@ Line 22: / Line 22: @@
 When accelerating, you can pretty much downshift whenever you want a power boost. However, downshifting when doing anything over 11k rpm is pretty pointless, as you're already in your powerband. You want to try to downshift to keep revs between 9 and 12k; this is where you get the most tug for each twist of the wrist. You should let off the throttle momentarily while quickly disengaging the clutch and kicking it down, then opening the throttle up wide to match engine speed as you release the clutch lever again; this will give you the power you need to accelerate effectively.
+====RPM guidelines====
+The EX250 engine, along with those on most 'sporty' bikes, was designed for high-rpm use. There seem to be some compromises which make it harder to use at engine speeds lower than about 6000 rpm. Basically, there's no reason to ride any lower than 5000 rpm, except for while sitting at a light. Even then, you can't depend upon the engine for any power that far down.
+The following suggestions are just that. Get used to what works for you, and keep in mind that your Ninja '''likes''' to work at high engine speeds. These are not guidelines for how to get the best gas mileage from your engine. However, they will help you avoid stumbling at low rpm and keep the engine spinning fast enough to be of some use if you need to suddenly go faster.
+* Mellow takeoff from a light: 3-4000 rpm
+* Aggressive take-off from a light: 5-6000, and only use small throttle openings below 5000 (less than 1/3 throttle).
+* Never cruise below 6000 rpm
+* Never ride in-city at lower than 7000; this gives you more available power if you need to move
+* In spirited riding (twisties) never drop below 8000
+* On the track, 9000 is about the lower limit, usually aiming for 9-11,000
 ====Clutchless shifting====
@@ Line 27: / Line 40: @@
 Clutchless shifting can easily be done on a motorcycle: it's just a matter of matching the rpms. On upshifts it's just a matter of backing off the throttle for an instant as you bang the box into the next gear. On downshifts you have to rev the engine up a bit as you drop a gear. Of course, the clutch is there for a reason, and shifting without it will wear your tranny out more quickly. In short, the only place this technique really has a place is on the racetrack, where tiny fractions of a second can make the difference between first and second place.
-Some advice? Learn how to do it and then don't, unless some large person named "Mad Dog Al" is chasing you with a chainsaw.
+Some advice? [[Can I ride my bike home if the clutch cable breaks?|Learn how]] to do it and then don't, unless some large person named "Mad Dog Al" is chasing you with a chainsaw.
 ====Shifting when stopped====
@@ Line 36: / Line 49: @@
 Note that it's easier and safer to shift down as you slow down (while the bike is still rolling), rather than waiting until you're stopped.
+====You have to be moving to shift====
+The EX250 has the Kawasaki '''positive neutral finder'''. This means the bike is set up to keep you from shifting past neutral at a stoplight and looking stupidly at your left foot while you go back and forth between 1st and 2nd.  This is usually a good feature, but you have to remember a few things about it.
+In order to shift past neutral the rear wheel has to be turning. This usually means that the bike is moving. The rear wheel has to be turning ''and'' you also must be in first gear. You can't just turn the rear wheel in neutral and shift up; you must go down into first and then shift.
+You can shift through the gears on the centerstand with the bike running, but this is not recommended. If the centerstand gives way you could end up chasing the bike several hundred meters up the road or digging it out of the end of your garage.
 ====Avoiding missed shifts or false neutrals====
@@ Line 50: / Line 71: @@
 When you let the clutch out, the pressure on the gearchange lever will cause the transmission to slip into gear if it wasn't already. If you get into this habit, you'll never hit a false neutral again.
+Make sure to avoid the common fault of failing to allow the shift lever to fall all the way to the bottom between up-shifts. This will cause the bike to miss shifts.