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12-24-2008, 06:36 PM
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#1 (permalink) |
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Samsung INNOV8
Join Date: Sep 2008
Location: Rajasthan
Posts: 1,188
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World of Sprockets!
Guys, Let's start with the basic info.
Gearing is a measure of all the components that determine the rate at which an engine's crankshaft's revolutions are transmitted, into the vehicle's speed. It comes from the word "gears" which are rotating cogs, which decide what speed the machine picks up, at a particular rpm.  Sprocketing means changing the front & rear sprocket sizes to affect gearing. It's one of the simplest and easiest mods. The basic info says that:--> 1. Bigger rear sprocket or smaller front sprocket, results in gearing biased towards acceleration, with some lag in top speed. 2. Smaller rear sprocket or bigger front sprocket, results in gearing biased towards top speed, with some lag in acceleration. Gearing does NOT result in more or less power. It only affects how the power is laid, by changing the balance between top speed and acceleration. So, if one wants more top speed, and is prepared to lose acceleration a bit, or vice versa, then sprocketing is advisable. Taller gearing results in better mileage usually, and short gearing results in less mileage. This is due to the fact, that in longer gearing, the machine travels longer distance for a particular engine speed (rpm), and vice versa. Gearing maybe affected by: Sprockets' size change, rear tyre's size change, gearbox modification, clutch drag, etc. Gearing is NOT affected by: Weight/ load change (pillion, etc.), front tyre change, free flow air filters/ power mods, etc. Final Gearing Value: It is the gearing value that indicates contribution to overall gearing from both the sprockets. The sizes of front and rear sprocket, in the measure of teeth the sprockets have, determines the final gearing. Final gearing alone signifies nothing, because many elements play a part in gearing, and most of them are inside the machine, like gearbox, etc. Final gearing is just for inter-comparison among sprockets & its sets. It is calculated by Rear Sprocket Teeth/ Front sprocket Teeth. Like Pulsar 180 UG4 has a 14 front and 39 rear setup. So, its stock final gearing is 39/14 which is equal to 2.785. Higher Final Gearing value signifies moving gearing towards acceleration (short gearing), and vice versa. So, when changing both sprockets from stock, the new gearing value should be calculated to determine which way you're going with gearing. Tyres: Rear Tyre change (size) affects overall gearing, if the profile (height) is affected due to this change. A higher profile increases gearing, while a lower profile decreases it. A tyre with size 120/70 has a normal height of (120mm x 70%) which is 84mm. But, the broadness of the tyre rim can change the "final height". A broader rim gives less tyre height, as tyre is rubber, and it expands over the broader rim. And of course, vice versa too. Front tyre size change doesn't affect gearing, although it may contribute to different ride height and different speeds on the speedometer. EDIT: This topic's incomplete. More material would be added on later. -Samarth Last edited by Samarth 619; 12-25-2009 at 10:52 PM. |
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12-26-2008, 03:53 AM
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#5 (permalink) |
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Stop Staring
Join Date: Dec 2005
Location: Brampton, ON, Canada
Posts: 754
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Can you please explain what is meant by VS Kit, V Kit, Regular Kit and CSB Kit?
Also, will it be allowed for people to post their experiences about sprocketing here in this thread? The decision lies upto the owner and mods of this thread.
__________________
Enna Rascalla. Mind it !!! |
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12-26-2008, 11:12 PM
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#7 (permalink) | |
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Samsung INNOV8
Join Date: Sep 2008
Location: Rajasthan
Posts: 1,188
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Quote:
 Also, I had used a 40 teeth sprocket on my P180. It was good for highways as my College was on Jaipur Road. Speeds of 90-100 were a joke on the bike. But then, I joined another college in the city & placed the stock sprocket again ... Sadly now, I misplaced it ...  ---- @ Leon nerd: As of now, I really don't know what these kits mean ...
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12-28-2008, 12:26 PM
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#8 (permalink) |
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Samsung INNOV8
Join Date: Sep 2008
Location: Rajasthan
Posts: 1,188
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Guys, The ADMIN, Mr. Sundeep has totally ignored me .... 2 Messages sent & no response...
People like Praful, Aryan, etc. please send his Majesty a PM, so that he pays some attention & all can be benefitted! Damn! How am I supposed to post a 700 KB Stuff???  Why can't he respond to me??
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12-28-2008, 01:55 PM
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#9 (permalink) | |
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The Sports CommuTOURer ;)
Join Date: Mar 2005
Posts: 2,245
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Quote:
You think Sunny only has this thing to manage? Duh! Chill man! Edit: post it somewhere and link it here... shimple!
__________________
(c) Grow Up  More on Facebook NO! I dont work for Yamaha, Bajaj, HH, TVS, Honda, Suzuki, Royal Enfield! Last edited by satyenpoojary; 12-28-2008 at 01:57 PM. |
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12-29-2008, 04:51 AM
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#10 (permalink) | |
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Akshay4384
Join Date: Oct 2008
Location: Ambala/Chandigarh
Posts: 267
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