Jul 27, 2011

17 Power to Weight Ratio of Made in India Motorcycles: 2011 Comparo

A collection & comparison of the "Power to Weight ratios" of the "Made in India" motorcycles.. in 2011

In a very simplistic understanding, more engine "power" usually means "more speed".. but in real life scenarios the weight of the vehicle also has to be taken into consideration.

To compare our "made in India bikes" by their "Power to Weight" ratios, I have compiled a list. This list would give an idea as to which bike would feel "Zipper" on the road when compared to other bikes.

The Honda CBR250R walks away with the (made in India) bike with the highest power to weight ratio.

But the list also throws in many surprises.. like how the Passion is one of the lowest when it comes to power to weight ratio.

Also how both the Pulsar 135LS and the Discover 150 has a better power to weight ratio than the Pulsar 150..

..how the Hero Honda Achiever and the CBZ Xtreme has near identical power to weight ratios..!!


Rank Model NameMax Power (Ps)Kerb Weight (Kgs)Power to Weight Ratio
01CBR250R25.35167152
02Classic 500 27.56187147
03Pulsar 220S21.04148142
04Pulsar 220F21.04150140
05YZF R1517.00131130
06Apache RTR 18017.03137124
07Avenger 22019.04154.5123
08Apache RTR 160 Fi15.90136117
09Pulsar 18017.02147116
10Karizma R17.24150115
11Apache RTR 16015.40136113
12Karizma ZMR17.84159112
12Bullet 35020.08180112
13Pulsar 135LS13.50122111
14Thunderbird20.08182110
14Classic 35020.08182110
14Bullet Electra20.08183110
15 Discover 15013.00121107
16Pulsar 15015.06143105
17FZ-1614.00135104
17FZ-S14.00135104
18CB Unicorn Dazzler14.18138103
19Fazer14.0014199
19Hunk14.4014699
20Achiever13.5913898
21CBZ xtreme14.4014997
22GS150R13.9814994
23CB Unicorn13.5014692
23Discover 12511.0011992
23CBF Stunner PGM-Fi11.7512892
23SZ-R12.1013292
24SS 12511.0012588
25CBF Stunner11.1512887
26CB Shine10.4312186
27CB Twister9.1310885
27Flame10.6512685
28Jive8.5111077
28Platina 1258.5011077
29Super Splendor9.1312175
30Platina 1008.2011373
31Star City8.2911572
31CD Dawn7.8010972
32Glamour9.1312971
32Glamour PGM-Fi9.1312971
33Splendor Pro7.8011270
33CD Deluxe7.8011270
33Splendor NXG7.8011270
34 Max 4R 8.2011969
35Crux7.6011367
35Discover 1007.7011567
36Passion Pro7.8011966
37YBR 1107.6012362


For those who do not have an idea how the "Power to Weight Ratio" numbers are calculated, I will post about it in my next post along with a comprehensive explanation about the "Power to Weight Ratio" concept.


The explanation behind the calculation of the "Power to Weight" ratio has been posted in this post along with the updated [2012] list..


P.S: I have taken care to calculate the max. power of each model in "Ps". Kindly point out if you come across any blooper from my side in the above calculations and also in the max. power / kerb weight figures.

You can also point out if I have missed any current model from the above list.





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Disclaimer:

This is to remind that the Views or Opinions in the blog are entirely mine unless explicitly stated. The Views and Opinions published in this blog should in no way be related to any other person or organization associated -- directly or indirectly -- with me.






17 Comments:

Sajal said...

I was just about to publish the same article :) Nice comparo chart bro!!

Anant said...

@Satadal.. Don't you think another list of such type should be made which also adds an average Indian rider's weight(say 68 kg) is added to the weight of the bike? Because, as per your list, a Glamour PGM Fi will 'mathematically' feel 'less zippier' than a CD Dawn.. (Same is the case of a Thunderbird and a P135 :) ) but during actual riding(due to added rider weight), you will get results contradicting to above maths. Because this is where actual higher horsepower will come to the rescue of the heavier bikes.(Assuming almost equal gear ratios in all bikes i.e. which clearly is not the case)

P.S.: I weigh nowhere close to the aforementioned 'Average Indian Rider Weight'. :) The above figure is only for calculation sake.

Anonymous said...

Power to weight ratio is Ps per ton right? So the formula would be Max Power(in PS) * 1000/Kerb Weight (in Kgs)... yea i get it.. but what i don't get is how power and torque are distributed through the rev range. are different settings available for doing so? does sprocketing help?

Veerendra Giddaluru said...

Explains why P135LS is so well received, it has higher power weight ratio when compared with 150cc competition, apart from RTR160, which results in class-demolishing performance.

S.P - Biker Next Door said...

@Anant, yes, the above calculation is just to give an idea about the bike/motorcycle's power to weight ratio..

Power and Torque are interrelated and gearing/sprocketing also makes a lot of difference to how the power/torque is distributed to the wheels.

@Sajal & Veerendra, thanks guys

Anonymous said...

where is yamaha R15

Sam said...

@Anant:
Adding in the weight of a rider won't change anything, because the same weight would be added to all bikes. The final number is just a ratio, so the bikes won't change position on the list. The other thing is that there is no such thing as an "average" rider. I weigh around 96kg, and my bro-in-law weighs just over 50kg. I'm not going to get much performance out of any of these bikes (which is why I'm buying a Bandit 1250), whereas my bro-in-law could have fun on just about any of them. Adding in a rider's weight would just confuse things for me, since I would have to remove that amount anyway to figure out the bike's specifications, which I can then add my own weight to, to decide whether the bike will do what I want it to. Most motorcycle magazines will ignore riders, and just list the weight of the bike as dry weight and weight with full tank of gas and all other fluids (no accessories like luggage).

2e33bd22-935d-11e0-8ae6-000bcdca4d7a said...

Buddy, you missed the suzuki slingshot in the list. Also, hunk and xtreme power is 14.2 bhp, not 14.4. Also, per honda website, Dazzler is 14 bhp and unicorn is 13 bhp.

Most of the time we wont have full tank petrol. But for kerb weight, full tank petrol is considered. If ratio is calculated with kerb weight, it is a bit unfair for bikes like pulsar and gs150r, which have bigger capacity fuel tank.

Assuming each bike has 5 liters fuel and 1 liter petrol weighs 800 grams, what would be the power-to-weight ratio?

S.P - Biker Next Door said...

@above,

For uniformity, the power figures of all bikes have been rated in "Ps", therefore "14.2 bhp" when converted into "Ps" appears as "14.4 Ps".

Again for the same of uniformity, one has to take into consideration the "Kerb Weight", it will be chaotic if one calculates the Power to Weight Ratio for varying amonunts of fuel.

Yes, the Slingshot was missed. Thanks for pointing that out, will update it soon.

2e33bd22-935d-11e0-8ae6-000bcdca4d7a said...

Yes, understood, you have mentioned power in PS. I thought it was bhp. And that comparison is really good work by you.

Using kerb weight for calculation, bikes with bigger fuel tank (like pulsar and gs150r) are put at a disadvantage.

If we consider just 5 liter petrol in each bike, it would mean fuel weight of 4 kg, and plus oil weight of 1 kg, so total 5 kg can be added to dry weight of each bike and ratios calculated uniformly, without disadvantage to any bike.

Why not include scooters Access, Activa, Wego, Rodeo too ??

S.P - Biker Next Door said...

@above,

Getting the Dry weight for each bike and then addding weight for 5 Litre of fuel would need some effort. Also not every bike maker provides the Dry weight of its models.

One has to standardize / rationalize somewhere.

Why not include scooters..?? Well, I am not a scooter guy and so far have not made any post about any scooter.

Anonymous said...

Hello, dont you think it would be good to add the torque/weight ratio also.
I have never seen a torque to weight ratio, is it irrelevant?
If so, can you please explain why?

S.P - Biker Next Door said...

Interesting idea..

it makes sense to make such a chart but then I have always heard and come across "Power to Weight" discussions, therefore the above list

Anonymous said...

Guys please note. Here only Bhp is considered. Torque is not considered. This is a good chart, but it is only half story.

Example, here Stunner 125cc is rated above SZ-R 150cc. Both have same BHP. But SZ-R has more torque, but it is not mentioned here.

Power/BHP indicates how fast the bike acclerates. More bhp @ higher rpm indicates the bike can sustain higher speeds.

Torque/Nm indicates how easily the bike can pull loads. Bike with more torque will pull more easily with pillion weight. Also, more torque @ lower rpm means lesser gear changes.

Also, please add KTM duke and slingshot in the list.

Anonymous said...

add ninja 250r to the list or at least comment its power
very curious to know ?

sachin said...

Time To Renew the chart.!!!! PULSAR 200NS and Duke 200 Gonna eat CBR 250

SAN said...

Power-to-weight ratio doesn't really seem to indicate the acceleration or how faster is the bike unless the weight difference is really big.

Though R15 is lighter than CBR 150 (by 2 kgs) the power-to-weight ratio of latter is more. But R15 has good low end torque & so is quicker than CBR & if it can maintain the same upto say 8000-8500 rpm, it could smoke cbr. you could get a lot of work done if the engine is able to rev into the 5 digit range, that's where the CBR (Honda engines) stands apart.

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