Re: World of Sprockets!

15/39 aka the Rx 100 gearing is the fastest of all RX series, next to that is the RXG that gives a mix of both short gearing & cruising.

Mods on Sprockets? Nah...I don't want to bust my engine.

Re: World of Sprockets!

thank you man. had seen a guy blowing off in just 2 gears in stock Rx 100 and later told me some weird sprocket numbers. so, i just wanted to confirm if there is any such sprocket upgrade. may be his mechanic has given him some gearbox tweaks??wondering.

going with stock 15/39.

Re: World of Sprockets!

Wrong sprockets can put so..much of stress onto the engine that it can instantly blow up...! Go with stock Sprockets..

If at all you want to bust anyone on the drag strip, remember to use a bigger carb and a free flow filter maybe UNI. Remember More Fuel + More Air = More Power...:-)

Re: World of Sprockets!

Legend Racer, Ram just reflected what I quoted at the start. Stock sprockets work the best for RX unless you want to screw the engine and it's not to state that you can't/shouldn't OG/UG (given heed to all discretion that's wise). And if you even go back quite a few pages, you can see a guy asking changing the gear tooth ratios internally, which is a sureshot way to stall your engine, worse screw up your counter shaft completely.

And I repeat it again, sprocket altering, extending the chain base, etc etc is all a STRICT DIY. Never count any one's experiences, everyone's differ.

Cheers!
VJ

Re: World of Sprockets!

Legend Racer: I just saw the thread now. See, your Rx100 has 14~ bhp or so, while P220 has 20-21 bhp. However, at lower rpms' your RX makes more torque/weight.


All this translates to just one thing:-> Assuming normal conditions, You will win against P220, but only upto maybe 25 kmph... Means you might have only a good launch.

The moment the P220 hits the upper zone of powerband in first gear, you will start losing pace. Because everytime the P220 rider upshifts, he passes through a 21 bhp power wave, at 8500 rpm. and he moves on... You will just be making 14 bhp at your top end.

In other words, the moment a P220 rider catches the upper zone (6000 rpm+) of his powerband, you can forget the drag then and there if you're on stock RX100...


And no, Sprockets can't help you in this situation. Unless you have atleast a 19-20 bhp bike, Sprockets can't help you dominate here. Remember, even R15 loses against the raw power of P220, although R15 is a fantastic & efficient bike. Power mods might help you, but again it seems unlikely that you'll make 20 bhp on a RX100.


Still, if you want to beat that guy, choose a twisted route where you can zip-zap through corners easily, and use your low end torque to maximum... A place where, the P220 guy can't rev high. Tight corners might help you gain a lead. This is probably the only scenario where you might lead.
(I'm not suggesting going for illegal/ unsafe racing. Choose closed & safe locations, and wear safety gears like helmet, jackets, gloves, boots, etc.)

Re: World of Sprockets!

thanks buddy..thats really great of you...i was in a big dilemma which sprocket to go for...i will go for the 40T rear sprocket of karizma and the chain would be the stock chain of duke 200??

Re: World of Sprockets!

Of course you can, the Duke's pitch is .520 as well ask the Karizmas. You can definitely go ahead.

Cheers!
VJ

Re: World of Sprockets!

thanks man. i needed only this part. the second part of your post seems to say, its something me and another guy. not at all brother. it is always between 2 bikes unless it is on racing tracks in the same segment.
you really sounded like im desperate to race and win a p220 guy on streets. come on bro. i aint like that.

well, on one occasion at our indian signal grand prix we both launched at best. but P220 just zipped off and i wondered what the hell is my 2 stroke doing even at legal limits of 60km/hr?
so i just wondered if sprockets can do wonders for acceleration for a Rx 100 to win a P220.

i got answer and its a NO. a stock Rx 100 can win in acceleration only with 14-16bhp bikes. thanks again.

Re: World of Sprockets!

Found a cool link out there, you guys might wanna try it out for your bikes to customise the gearing.

Gearing Commander: Motorcycle Speed, RPM, Chain & Sprockets Calculator

Re: World of Sprockets!

It's already been discussed long back, nYsus.

Cheers!
VJ

Re: World of Sprockets!

Oh.. how to use it though is a bit tedious. Can anybody help ?? I want to optimise my 220 sprockets.
What actually is interesting is that the pulsar isnt listed here, but my dad's jawa yezdi is there.

Re: World of Sprockets!

You can customize it and add the bike you want. In fact the bikes there are listed by the users. You'll find 200 there just change the sprocket setting of that to 220 14/36 and you can experiment with it.

Cheers!
VJ

Sent From My Phone Using Internet.

Re: World of Sprockets!

Hai

I have replaced the rear tyre(MRF Revz - 140/60-17) of FZ-S to Pirelli sports demon 130/80-17. The riding height has increased due to the change. The problem that I am facing is that the bike is struggling to even reach 95-100 km/h. In the old setting it used to touch at the same RPM 115km/h. Please advise me a change of front or rear sprocket to bring back to former glory. Kindly advise.

Cheers

Mathews

Re: World of Sprockets!

A bit of reading difference because of size change.
Rest is fine.
The meter reading would also change and shows you wrong when you use a different size of tyre

Try comparing your speed with some other fz.

So better stick to the tyre and enjoy the ride.
For changing a sprocket you have to buy full set of front, rear and chain.
And that need to shell out some 1.7k


From iPhone via Tapa ! 📲

Re: World of Sprockets!

[MENTION=54751]Sird[/MENTION] - I am confused because I have changed only the rear tyre and the front is stock. And moreover the speedodo is attached to the front tyre. I am ok with the change of the full sprocket set. Please advise.

Cheers

Lasu Mathews