Power Commander V KLX250 EFI
#41
06-12-2012, 07:49 AM
I had the opportunity to conduct a carburetor KLX300 of older models and I can compare with my current 300cc EFI. The model is immediately carburized at low rpm, more abrupt, but at half speed and high EFI model is more powerful. I like the mode of operation of the EFI because you can drive like a soft kitten slowly and high is fun, much more than the carbureted model. The power that comes with real data-taking to the wheel, not the clutch, is about 27-28hp and torque of 3.0kgm very usable in a wide range of rpm. It is possible that the clutch figures reach 30hp.
Thanks for reply. You mean EFI has imposing torgue at low rpm, and has a blast like power at high rpm?
I think the power on a clutch should be more than 30hp if the wheel data is 27-28hp, I suppose is about 35-37hp.
#42
06-13-2012, 03:11 PM
The power to the wheel is always lower than the clutch.
In this case we 27/28 on the wheel.
The 300cc torque is higher than most 250cc 4T, why need more?
Do not be fooled by the numbers of manufacturers: 37hp is a very high figure that few reach 250cc 4T. The reality is that most offer between 30 and 35CV.
Look at all the changes that have to do on a CRF250 to touch the mythical barrier of 40hp on a 100% race bike!
SEE IT HERE VIDEO: WHAT IS THE BEST BANG FOR THE BUCK! PIPE? CAM? OR PISTON? | News | Motocross Action Magazine
In this case we 27/28 on the wheel.
The 300cc torque is higher than most 250cc 4T, why need more?
Do not be fooled by the numbers of manufacturers: 37hp is a very high figure that few reach 250cc 4T. The reality is that most offer between 30 and 35CV.
Look at all the changes that have to do on a CRF250 to touch the mythical barrier of 40hp on a 100% race bike!
SEE IT HERE VIDEO: WHAT IS THE BEST BANG FOR THE BUCK! PIPE? CAM? OR PISTON? | News | Motocross Action Magazine
#43
06-13-2012, 03:17 PM
See another comparison:
2012 250 DYNO SHOOTOUT! HOW MUCH HORSEPOWER DO THE 2012 250s REALLY MAKE: WE REVEAL THE INNER SECRETS OF THE 2012 POWERBANDS | News | Motocross Action Magazine
Should be asked whether the figures are obtained at the wheel or are the clutch! power depending on the bank offers them one way or another. I understand that my data are low, but very real-ring chain, producing% OEM covers power losses. Maybe the clutch approaching those 30hp
2012 250 DYNO SHOOTOUT! HOW MUCH HORSEPOWER DO THE 2012 250s REALLY MAKE: WE REVEAL THE INNER SECRETS OF THE 2012 POWERBANDS | News | Motocross Action Magazine
Should be asked whether the figures are obtained at the wheel or are the clutch! power depending on the bank offers them one way or another. I understand that my data are low, but very real-ring chain, producing% OEM covers power losses. Maybe the clutch approaching those 30hp
#45
06-19-2012, 12:49 AM
The maximum speed I can not know for sure, because I have a 14-48 installed.
But I've seen tips of 130-140km / h marker. The bike cruising speed 100km / h with this development.
With the OEM (14-42) cruising speed is much higher, around 115-120km / h, and the maximum speed I can not know, but more than 150km / h.
You must understand that not having run more power more km / h. The limitation is provided by the development and rpm. The 300cc has fewer high-rpm regime, but very little. So I would say that runs less than 300cc 250cc equal development.
Another thing different is the acceleration, much better in the 300cc, takes less time to squeeze the 6th gear.
But I've seen tips of 130-140km / h marker. The bike cruising speed 100km / h with this development.
With the OEM (14-42) cruising speed is much higher, around 115-120km / h, and the maximum speed I can not know, but more than 150km / h.
You must understand that not having run more power more km / h. The limitation is provided by the development and rpm. The 300cc has fewer high-rpm regime, but very little. So I would say that runs less than 300cc 250cc equal development.
Another thing different is the acceleration, much better in the 300cc, takes less time to squeeze the 6th gear.
#46
06-19-2012, 11:32 AM
Hi Jeff
Maximum speed on standard 2010 EFI was around 115 km/h on flat road, with only free mods ( rev limiter, air box lid etc.) The 250 would struggle to get to max revs in top gear. Now I have 300cc with 13 front sprocket and OMC rear sprocket. Maximum speed is 128 -130 km/h in top gear. The bike will not rev more than about 9500 rpm, but gets there very easily on a flat road at sea level. I cannot beleive a top speed of 150 km/h from a 250. Down a hill maybe? My speed is restricted by the revs of the engine, even down hill the speed will stop when the engine hits max revs. How do you get past 9500 rpm?
Maximum speed on standard 2010 EFI was around 115 km/h on flat road, with only free mods ( rev limiter, air box lid etc.) The 250 would struggle to get to max revs in top gear. Now I have 300cc with 13 front sprocket and OMC rear sprocket. Maximum speed is 128 -130 km/h in top gear. The bike will not rev more than about 9500 rpm, but gets there very easily on a flat road at sea level. I cannot beleive a top speed of 150 km/h from a 250. Down a hill maybe? My speed is restricted by the revs of the engine, even down hill the speed will stop when the engine hits max revs. How do you get past 9500 rpm?
#47
06-19-2012, 12:35 PM
Join Date: Aug 2011
Location: Phuket, Thailand
Posts: 516
Max speed on my 2011 D-Tracker KLX250SF with a KK331 big bore kit & larger snorkel is about 150kmh is short bursts & will sit at 100/110kmh fairly comfortably for cruising! (2x 17inch street wheels btw)
I have the stock SF gearing of 14/39, the front wheel will lift easy in 1st gear with this gearing & the bike turns into a torquey back street scratching wheelie monster with the 13T front sprocket fitted....
I have the stock SF gearing of 14/39, the front wheel will lift easy in 1st gear with this gearing & the bike turns into a torquey back street scratching wheelie monster with the 13T front sprocket fitted....
#48
06-20-2012, 12:44 PM
La Klx 250 a todo lo que puede dar on Vimeo
Maximum speed with 14-42 OEM. Light looking for.
OEM exhaust
snorkel OEM
Light wind.
Maximum speed with 14-42 OEM. Light looking for.
OEM exhaust
snorkel OEM
Light wind.