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OK Mr boon
Its all about ratios
How good is ya maths :unsure:
15 teeth/45teeth on the rear
Is + or minus 1 tooth on the front= 3 less or more on the rear
So now I have made it so familar as family :blink:
I let ya try and work out the exact ratios from now on :blush:
Yaaaaah
Cheers
MurphBoony wrote:
Quote:now that poses the million dollar question,,whats the ratio difference from runnning your 13/47 against my 14/50??????this what I am trying to figure out???Boony.
Boony, an easier way to accurately determine which ratio you should run with and the difference between them is convert them to their base ratio. Whilst sounding complicated it couldn’t be easier.
You simply divide the rear sprocket size by the front sprocket size.
So a 13/50 combo is 50/13 = 3.846
14/47 = 3.357
14.50 = 3.571and so on…
The lower the ratio the more top speed you will carry, but at the expense of acceleration and vice versa as the ratio increases.
Use this as a way to calculate the small difference in gear ratio’s between the sprockets you are using and I would run the largest front sprocket you can at a ratio you are happy with to reduce wear.
Finally, the drive chain is only a portion of how your bike reacts to sprocket changes. Your bike has set gear ratio’s (internally in the gear box) for each and every gear. It also has what’s called a final drive ratio.
Your final drive ratio and individual gear ratio will likely be different to other bikes, but not other DRZ’s. Therefore, using the same sprockets as say Murph, on his big ass 525 with significantly more power and a different final drive won’t help.
Trial and error to get what you like, then use the calculated ratio to adjust to your liking. I hope this helps
Great explanation Moto. Very helpful for the technically challenged like myself
Kram
Well done Moto
According to the theory I am running at 3.714 which suits me fine
Like I said before I did try the 13 tooth sprocket on the front with the 52 on the rear but I was changing gears too often as it would peak out too quick.
Cheers
MurphBoony wrote:
Quote:moto wrote:Quote:I’m very confident you should run the largest front you can get away with. I don’t see how torque multiplication is really a factor here. Changing to a bigger front sprocket and adjusting the rear sprocket so that you have the same final ratio does not effect the ‘torque multiplication’ in my opinion.Torque multiplication is more commonly referred to in the truck and performance car world when specifying/adjusting/operating torque converters. Torque converters are most commonly used on vehicles with a automatic transmission.
Nothing to do with automatic transmissions or converters, as manual transmission multiplies the torque produced by the engine through its ratios
After my ride with Aaron today along the local stock route,I now have found the gearing that suits me, and yeah I will be keeping the 14 on the front and only change the rear sprocket when need be.
Cheers
BoonyBoony sadly I have found that you can change a front sprocket a tooth either way without worrying about the chain being too long or short, but a rear normally (and I mean normally) requires the chain to be lengthened or shortened
Like Moto said find what you like and go with it, you see guys at races will change a front for a big change and say two teeth on the back for a smaller personal change. I have a few different sprocket and chain sets so I can use the same bike for a day at the Watagans or Orange pine tree singles and then change to do some silly speed at Condo. Its all pesonal right down to riding style
TB
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