Thanks for the beautifl peice of advice :-) I mostly have highway runs so need a better average. Sometimes pickup can me neglected. . Going for a 14/37T ratio 2.642.. how does this sound ?

^^ Don't do any sprocket change. It would cause imbalance and you would not like it for sure. Karizma is not a suitable bike for sprocket change. It has enough torque and power to handle. If you need better power, better you upgrade our bike.

[QUOTE=punarvasu;926792
Karizma with its 17 bhp and 18.35 Nm torque is providing an excellent pick up and decent speed. Then why are you trying to spoil it instead of buying another high speed bike? Think about it twice or thrice before attempting to change the gear ratios.[/QUOTE]

Well I am experiencing a problem with my pick up and the top speed in zma.. I face a hard time touching 105kmph. Thats the max I was able to go.. is the something I need to tune up or get something fixed or check.. I have serviced it on a regular basis but still getting an average of 37kmpl... plz advice

CRF230 Service Manual Uploaded to Mediafire seperately.

Then too the result will pathetic as the loss of torque is about 15% with an increase of speed in the same ratio. Here the bike becomes sluggish, losing all the characteristics of Karizma. Is it acceptable?

If you decide to modify final gear ratio, try a 13/38 sprockets which gives about 5% increase in speed.

Don’t expect much more speed than that from Karizma as it is not designed as a racing bike. FE depend many factors like condition of the bike, traffic in the road to riding habits. Yet, 37 kml is a good FE from Karizma; I think.

Lol, sir a Karizma will max out @125 and not 105. Race bike or no race bike, 105 is the speed where it cruises. *no offence*

Even after 65k kms, 7 yrs old, my bike touches 125 speedo indicated. I was able to touch 128 kmph on my Dazzler (speedo inidcated). How come you think a Karizma will top out at 105 kmph. I have cruised at 105 kmph for thousands of kms over years. Karizma can touch 135 kmph (true speed 125 kmph) on speedo, and sometimes 140 too in favorable conditions.

This is my GPS read when I almost maxxed out in 4th gear. (This is posted just for informations sake and not to promote any sorts of rash riding.)

This is what I said in my previous post: “Don’t expect much more speed than that from Karizma as it is not designed as a racing bike”. Does it mean Karizma’s maximum attainable speed is 105 kmh? Cool down and read through the lines; not between the lines.

What both of you said about Karizma’s speed is correct. With 2001.1 mm tyre circumference and overall gear ratio of 7.75 in top gear it can move at 135 kmh speed 8750 rpm and at 125 kmh at 8100 rpm provided the engine rpm is transferred to the rear wheel without any loss. But in usual cases there is a notable loss due to many reasons.

Ravi@17bhp’s bike may be capable of reaching 135 or 140 kmh speed; I have no arguments against this claim. As far as I know, Karizma’s maximum power output is at 7000 rpm.

If you don’t mind, please tell me how the speed increases in favourable conditions without relative increase in engine rpm.

If that speed in fourth gear is correct, the engine was revving above, at least, 10000 rpm at that time. If so, your bike can easily reach above 150 kmh speed in fifth gear. By the way, what does that “INACCURATE” mean?

Anyway, I cannot understand why we are always arguing about the top speed of our bikes. The word “speed” itself seems to be most provocative here.

IIRC The RPM was around 9.5~10k, but at the time throttle was steady, cause of upcoming traffic. The INACCURATE means the 0~60 and Quarter Mile readings are inaccurate, my pillion didnt time it right, hence it became in accurate.

To be quite honest bro, I dont care about speed anymore, the pic was a really old one. Now you can find me happily cruising the streets at 2~3k RPM.

Nice. My usual riding is a little slower – at some 1500 – 1600 rpm in any gear.

I know the GS has some thingi which gives more low end grunt, but isnt 1.5~1.6k really asking for it? Wont the engine lug/knock?

My bike s speedometer stops suddenly while riding and after some time it comes to life.. like waking up from sleep
i changed speedo cable but the problem still persist .....

You were speaking as if the Karizma's top speed is 105. There is nothing to read between your lines. Either you don't know about Karizma or you just tossing your opinion. Any Karizma in good condition can reach 120 without any issues. Favorable conditions means, wind direction and no uphill for at least 3-5 kms at a stretch. You were talking about tire circumference, but I really doubt if you have ever ridden a Karizma. Karizma's engine shuts off at 9k rpm (rev limiter). So, anybody can rev upto 8750 happily.

There is nothing to boast of the top speed. If my bike is refusing to go beyond 105 kmph, there is something wrong with my bike. Thats the issue a member above facing. Instead of suggesting any solution for that, you tried to play like ZMA's top speed is 105 kmph and its normal. We feel you are completely wrong. It is you who were provocative about the speed, and not us, and we were just sharing the facts about the bike.

And regarding my bike, its not any special. Its stock and as good as other stock Karizma. And for your kind information, it doesn't mean that power drops to zero after peak point. There would still be power till 9000 rpm where the rev limiter kicks in and engine shuts off. Any good Karizma can do 135-140 kmph speedo indicated (true speed 126 kmph).

Welcome to my world. And to add, mine also quivers when we ride at a steady phase, say Im doing 80kmph then needle will be dancing from anywhere between 70~90kmph.
Its not the cable, I believe its the speedo gears.