RKOLI1983

Karthik do those gear ratio numbers account for final drive ratio, primary reduction ratio and wheel diameter? If not you have to multiply each one with the corresponding gear ratio in order to get a ratio of crankshaft's angular velocity to vehicle's linear velocity. If an RX truly makes more power than a fiero and both the bikes are geared identically such that once in top gear every crankshaft revolution results in bike moving exactly the same distance, it will go faster than a Fiero. The only way this couldnt be possible is if any of the other factors like total vehicle weight and aerodynamic drag are not equal.
In addition, another reason which could be a possible explanation is that the 2 stroke power numbers quoted in the magazines could be a lot more optimistic than those mentioned for the 4 strokes. Most of them(2 stroke power numbers) were published in an age when dynos were a distant dream for the common man. Such a comparison would make sense if its between 2 vehicles which have been tested on the dyno.

MACH50

2 stroke power were rated by companies and were dyno tested.Companies like Yamaha and Suzuki had been in into 500cc 2t GPs for decades, they are pro at power setting and dyno rating.Both Shogun's AX10 engine and RX100's 85-89 engines were direct imports from Japan.So no doubt that they were dyno-rated figures.It is known by all that 2ts actually goes like stink and it does.Basically all these legends were released in India for commuter public and so they had toned down outputs.But in this age of mods, they(100cc-140cc 2ts) can smoke anything till 230cc 4ts(and modded ones too),with the correct mods.Yes their fuel bills would be high.

@jd666........Yes I have read the Autocar RX100 vs FZ16, and it seems that RX100 couldnt have had a better successor than FZ16.You can tell that FZ16 is actually the new RX100.The magazine tells though, that RX100 needs to be ridden by right hands to keep up with the FZ16.And its also correct,only Pros can ride the RX100 the way its meant to be ridden,while anyone can hop on a FZ16 and speed off.Pros can handle vibrations under hard acceleration and clutchless shifts,which are the traits of a fast RX100.While on a FZ16, its very easy to ride, as these niggles wont be there.

RX100-11BHP/10.74Nm torque,0-60kph@6.70 secs precisely
FZ16 - 14BHP/14Nm torque,0-60kph@5.66 secs precisely

Even after this they call RX100 the Usain Bolt of straight line where the enormous power to weight shows and measures the FZ16 if not passes it in gearshifts.So, it can be well understood that even with 3bhp less and lower torque,how the 2t engine keeps climbing the RPMs without any power lags.The newer,advanced,aerodynamically favoured,midshipped 4T FZ16 seems to be needing a breather in order to keep the game up with RX100,which is a 15 year old bike with basic technology.
Supremacy of 2T engines can be well understood here.

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RKOLI1983

@MACH50 : I do not mean any offense to you but I disagree with you about some things. The traits of any powerful machine are only performance figures. By that I mean dyno results or 0-60 results. A fast machine does NOT need to vibrate. Vibrations are a a trait of a poorly designed vehicle or component within the vehicle.

NitinGirish

Not meaning to get into any arguments here... Is this figure mentioned in the article? I was always curious to know RX100s acceleration figures.

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jd666

^^ yup i think so it was mentioned in the article.

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My offerings to the gods of speed -

- KTM Duke 200
- Yamaha RXZ 5 speed

NitinGirish

Hmmm.. thats in the Gladiator region I think... Pretty pedestrian considering the reputation

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Vampire

Macho50 . u must be a mathematician to judge a bike by number crunching . Theory and practice and two entirely different things my friend . FZ a nice bike with a slow mo motor .

MACH50

where is the disagreeable point in this ???? U r correct.And I never wrote anything that disagrees with your point !!!! Moreover these 0-60 tests are never performed in absence of crosswinds and so they are seldom error free.Lighter bikes with conventional chassis suffers.The real magic of better power to weight can be understood when these smaller engined 2ts keeps accelerating even after 90kmph to their top speed unabashedly.Whereas more relatively bigger 4ts,it requires sometime, rpm slotting and all to keep the machine accelerating to its top end after 90kmph.

@Vampire........I am not judging the FZ16(torque maestro) and RX100(Ok, torque monster) on my own,its just a recap of the Autocar article, none of them my thoughts. Thanks.U must have confused me with Rkoli1983 who is more into number games rather than street logging

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karthikdattag

Yes i fully agree with this one.

What was the summary like !!. What were the Top-Speeds mentioned & how were they measured?

This is so true even in case of smaller 2-Stroke machines like Hero-Puch, which accelerates till 60-65Kmph (Top Speed) effortlessly. The way indian 2-Strokes pull till their respective Top-Speeds is commendable. No wonder they call RX as "Pocket Rocket".

And all of us, please let us maintain some peace here, we are just trying to figure out if BHP/Ton ratio is infact important in Vehicle's performance. No offence on RX series here. They were the greatest bikes ever produced & will continue to be Legends.

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‘It throws itself around in a brash and unseemly manner, shouting for attention. To ride this bike is an event with a race-tuned soundtrack.’

- Yamaha RD

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Kindly visit URL :

http://www.xbhp.com/talkies/448234-post.html

for spares of RX135/RX-Z/RXG/RD

jd666

"And all of us, please let us maintain some peace here, we are just trying to figure out if BHP/Ton ratio is infact important in Vehicle's performance. No offence on RX series here. They were the greatest bikes ever produced & will continue to be Legends."

To answer that, bhp/ton ratio cannot be the absolute measure of a vehicles performance, since the power and torque curves, the spread of power, how it is utilized, and the gearing employed to widen this power further, all make a difference to the vehicles performance.

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My offerings to the gods of speed -

- KTM Duke 200
- Yamaha RXZ 5 speed