Drop gear question.
Turbo Mini Forums

Could anyone tell me what the difference between a 24 tooth primary and input combination and 23. I know they both equal to 1:1 ratio but wondered why there are two ways of getting it.

Thanks
Dan.

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Maybe something to do with the strength of the tooth, if the outside dia of the 2 types is the same then the 23 tooth type would have a slightly larger tooth.

Edited by wez on 8th Dec, 2011.

one day boost will be mine!

Its called a gear correction factor. I had a look at both of them together the other day, the the gears with more teeth are significantly thinner, to the point where I would never run a 25 tooth gear!

The gears are near enough identical sizes but the profiles are significantly different. Im guessing one would also be alot louder than the other.

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1/4mile in 13.2sec @ 111 terminal on 15psi

If youre looking at the Minispares ones they are all interchangeable to make higher or lower ratios by either having a 24 primary and 23 input or a 23 primary and 24 input, but the 23 tooth 1:1 was known as the Turbo Challenge set being stronger through having bigger teeth

I seriously doubt it!

If your going for a 1:1 ratio, as Paul says the 23 tooth gears will be alot stronger.

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1/4mile in 13.2sec @ 111 terminal on 15psi

It is the MiniSpares ones I'm looking at and would the 23 arrangement be louder? Also probably a noob question but could anyone explain the advantages of going for a ratio other than 1:1?

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I'm using a 23 tooth primary and 24 tooth input on the next 998 turbo, simply because with a 3.105:1 diff it gives me a better FD ratio for my needs, 3.24:1.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

and to add 23 tooth gear is ear splitting

so if you go for that expect to pay for a decent hearing aid sooner! ....lol