Suzuki GD110 vs Honda CG 125

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RocketScience (RocketScience) 2013-07-10 03:31:40 +0500 #21

CG aur GD ka apus mai muqabla banta he nhe
Han price ko compare keya ja sakta hai

bilalahm (bilalahm) 2013-07-10 03:44:00 +0500 #22

Just check the year when the CG125 engine was designed and when was the GS one made

TZB (TZB) 2013-07-10 04:20:44 +0500 #23

Exactly! CG still has the old push-rod (OHV) engine technology. GD is an OHC design which is more economical, quieter, and powerful than a similar capacity OHV engine.

For details on GD 110's engine, go here: Suzuki GD110 Specification

aximaxim (aximaxim) 2013-07-10 05:49:18 +0500 #24

Brass Tacks
In general principle you are right...... but if you look at the engine specs of CG and GD you will see that CG-125 engine produces 1 BHP with 11.36cc of engine displacement whereas the GD-110 engine produces 1 BHP with 13.25cc, therefore its not true in this case.

If GD had a 125cc engine it would only be producing 9.4BHP....... CG-125 engine produces 17% more power per cc than GD.

[TABLE="width: 433"]
<tbody>[TR]
[TD]Motorcycle
[/TD]
[TD]Displacement
[/TD]
[TD]BHP
[/TD]
[TD]cc / 1 BHP
[/TD]
[/TR]
[TR]
[TD]CG125
[/TD]
[TD]125
[/TD]
[TD]11
[/TD]
[TD]11.36363636
[/TD]
[/TR]
[TR]
[TD]GD110
[/TD]
[TD]110
[/TD]
[TD]8.3
[/TD]
[TD]13.25301205
[/TD]
[/TR]
[TR]
[TD]GD125*
[/TD]
[TD]125
[/TD]
[TD]9.43
[/TD]
[TD]13.25301205
[/TD]
[/TR]
</tbody>[/TABLE]
*Hypothetical

Does that make the CG engine better?......................NO!

So it means.........GD engine is better...right?............NO!

Its about Customer preference and product positioning in the market......CG owners dont buy CG for economy......they buy it for power and thats what the engine is tuned for.....to produce more power. Whereas GD appeals to a different kind of consumer..... They want economy and thats what the engine is tuned for.

Buy a CG if you want power!........ if economy is what you are after.......go for GD! I wanted economy and I chose a Unique UD70. Before Chonda I had a Cg125....I bought it because I wanted something fast and easy to repair.

TZB (TZB) 2013-07-10 07:05:38 +0500 #25

Can you please quote reference of your figures/values?

aximaxim (aximaxim) 2013-07-10 07:15:37 +0500 #26

I calculated the cc/1 BHP my self. I extracted the BHP and engine displacement from the Product brochures available on there relative official websites. CG produces 11 BHP whereas GD produces 6.2 KW which is equal to 8.3 BHP. Do the Math!

devilskreed (devilskreed) 2013-07-10 07:20:30 +0500 #27

Also adding GD is 9kg heavier than CG,,dry weight 107kg vs 98kg

aximaxim (aximaxim) 2013-07-10 07:30:09 +0500 #28

You are right but I was only stressing on the facts of the engines and not the whole bike. All I meant to say is......not all OHC are more powerful. Its how the engine is designed and tuned. Its carb, etc etc.

I did the same analysis for GS150 and Cg125 engines.........and facts prove CG engine produced 15% more power per CC than GS engine. Suzuki engine gives a better fuel economy because they are inclined towards better fuel economy whereas CG is inclined towards power. It does not mean one is better than the other. They are different and appeal to different segments of the market.

TZB (TZB) 2013-07-10 07:57:31 +0500 #29

Brother, Brake Horse Power (BHP) or Power Output (kW) values are taken at a particular RPM value. Can you please share for what RPM values do these figures hold true? The closest information I could fetch over the internet regarding this is: 2004 Honda CG 125 which says 11 BHP is @ 8500 RPM and Suzuki Hayate (Scroll to Suzuki Hayate Specifications section. Suzuki Hayate has a similar engine as Suzuki GD 110) says it has a BHP value of 8.3 @ 7500 RPM.

So there's a difference of 1,000 RPM for which both figures are quoted. Can they still be compared with this difference?

Automotorsport_Lover (Automotorsport_Lover) 2013-07-10 08:04:00 +0500 #30

^^It just means that the peak power is produced at 7,500rpm... Above that the power decreases.
According to the bore and stroke of these bikes, they produce peak power at different rpms... Suzuki has its peak power in the lower rpm as compared to cg

Sent from my ST25i using PW Forums mobile app

aximaxim (aximaxim) 2013-07-10 08:19:32 +0500 #31

GD engine wont produce more power than it will be producing @7500 RPM....... thats the peak of its power band. Anything over 7500 RPM will drop the BHP.......

Yes you can compare the 2 engines at different RPM levels...because those are the RPMs at which the engine is producing maximum power. Thats how it is done.

devilskreed (devilskreed) 2013-07-10 08:20:22 +0500 #32

Yar i am not a fan of CG,not at all..But i cannot digest the fact that people are comparing two bikes of different displacement and category.Ab log kahain *** GD is faster than inazuma..

aximaxim (aximaxim) 2013-07-10 08:20:38 +0500 #33

I second that!

aximaxim (aximaxim) 2013-07-10 08:22:04 +0500 #34

The only thing comparable between the 2 bikes is "PRICE"

TZB (TZB) 2013-07-10 09:36:57 +0500 #35

I see. So here comes the BMEP (Brake Mean Engine Pressure).

"BMEP refers to the average pressure that acts on the piston during the engine?s four strokes. The higher it is, the more the design has been optimised. And the key thing about BMEP is that it takes into account engine rpm, engine volume and engine power output. It?s the only equation to use when comparing engines from the perspective of saying which is more highly developed." A Better Way to Compare Engines

According to this article and using below values, BMEP of Honda CG 125 is 9.33 Bar and that of Suzuki GD 110 is 8.79.
[TABLE="class: grid, width: 400, align: left"]
<tbody>[TR]
[TD]Feature[/TD]
[TD]Honda CG 125[/TD]
[TD]Suzuki GD 110[/TD]
[/TR]
[TR]
[TD]Displacement(cc)[/TD]
[TD]124.1[/TD]
[TD]112.8[/TD]
[/TR]
[TR]
[TD]Power (kW)[/TD]
[TD]8.2[/TD]
[TD]6.2[/TD]
[/TR]
[TR]
[TD]@RPM[/TD]
[TD]8500[/TD]
[TD]7500[/TD]
[/TR]
[TR]
[TD]BHP[/TD]
[TD]11.00[/TD]
[TD]8.31[/TD]
[/TR]
[TR]
[TD]BMEP (Bar)[/TD]
[TD]9.33[/TD]
[TD]8.79[/TD]
[/TR]
</tbody>[/TABLE]

So BMEP says Honda CG 125 has a better engine. But watch it, the difference isn't significant - a mere 0.54 Bar!

driver56789 (driver56789) 2013-07-10 10:05:33 +0500 #36

Looks like we agree GD110 is better choice at this price

driver56789 (driver56789) 2013-07-10 10:07:15 +0500 #37

are you guys mechanical engineers?

naseer_jaan (Naseer) 2013-07-10 10:15:50 +0500 #38

rooz sochata hon bhool jaon tujhe ,,,
per main her rooz yeh baat bhool jata hon,,,,
bhi

bhi jaan main jab se gd110 i hai is ka dewana ho gaya tha pictures dekh dekh ker ,
aur rooz sochata tha k pridor sale kar k gd110 purchase ker lon, kyon k i m not big fan of honda ,
aur aaj dill k hathon majboor ho k orignal docoments le k pridor sale kerne aur gd110 purchase karne chala gaya ,
pehle main ne socha k pridor sale kar k suzuki showroom jata hon ,
lakin phir zehan main aaya k pehle showroom ja k dekh to lon k gd110 available b hai k nahin ,
honda center per main ne apni pridor ka rate lagwaya to 75000 laga, main bagair pridor sale keay suzuki showroom chala gaya, aur ja k jab main ne gd110 dekhi to ?????????????????????
guys u cannot beleve main ne kaya feal kiya can u guess ????????????

aximaxim (aximaxim) 2013-07-10 10:22:48 +0500 #39

That was a good read actually. The term BMEP is new to me. Will have to do a lot of reading to learn more about it.
Funny thing is compression ratio of GD110 is higher (9.5:1) than that of CG125 which is (9.0:1) yet still CG has a better BMEP.
Higher the compression ratio......higher the BMEP...... thats the rule.....right?....correct me if an wrong.

TZB;3949508:

I see. So here comes the BMEP (Brake Mean Engine Pressure).

"BMEP refers to the average pressure that acts on the piston during the engine?s four strokes. The higher it is, the more the design has been optimised. And the key thing about BMEP is that it takes into account engine rpm, engine volume and engine power output. It?s the only equation to use when comparing engines from the perspective of saying which is more highly developed." A Better Way to Compare Engines

According to this article and using below values, BMEP of Honda CG 125 is 9.33 Bar and that of Suzuki GD 110 is 8.79.
[TABLE="class: grid, width: 400, align: left"]
<tbody>[TR]
[TD]Feature[/TD]
[TD]Honda CG 125[/TD]
[TD]Suzuki GD 110[/TD]
[/TR]
[TR]
[TD]Displacement(cc)[/TD]
[TD]124.1[/TD]
[TD]112.8[/TD]
[/TR]
[TR]
[TD]Power (kW)[/TD]
[TD]8.2[/TD]
[TD]6.2[/TD]
[/TR]
[TR]
[TD]@RPM[/TD]
[TD]8500[/TD]
[TD]7500[/TD]
[/TR]
[TR]
[TD]BHP[/TD]
[TD]11.00[/TD]
[TD]8.31[/TD]
[/TR]
[TR]
[TD]BMEP (Bar)[/TD]
[TD]9.33[/TD]
[TD]8.79[/TD]
[/TR]
</tbody>[/TABLE]

So BMEP says Honda CG 125 has a better engine. But watch it, the difference isn't significant - a mere 0.54 Bar!

2468 (2468) 2013-07-10 10:28:40 +0500 #40

U R right but there is no replacement for displacement