Going to be doing mostly street driving with the odd track day.

Prob going for either a ppg 1-2 gear set or 1-4 using 5th standard.

Would you guys recomend Syncro Helical gears or Strait cut Gears?

Thanks for the help

look ere
http://forums.nasioc.com/forums/show....php?t=1087759
Originally Posted by bluecamel04
also intrested would straight hold more power than helical. how much power are you running on your gears now?


For a given gear width, helical will be stronger than straight cut. This is due to the fact that helical gears have an overlap of around 2 while straight cut gears have an overlap of about 1.35. The reason straight cut gears are percieved to be stronger is that most often straight cut gears are found without synchros thus letting the gear, wither straight cut or helical, be wider. This is all in one of the stickied FAQs around here somewhere.

Im getting the synchro mesh 1to4 hoping to hold my lounches and ram changes

if you hate noise go helical, straight are loud, wen im in first or second you hear my gears before the exhaust when im coming

dont they call Straight cuts when synchros would do on your power level, Rice Whine... like sake

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Why not 1-2 Straight Cuts and 3-4 Helical bit of both worlds plus you can cruise in 4th without the noise/attention.

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so helical would be the strongest and best to drive around town then by the sounds of it????

What the advantage of having straitcut and the advantage of having helical?

advantage of straight cut is that idiots will think your gearbox is broken and other people will think your car is massively modified and pull you over for yellows and other fun.

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Straight cut gears are exactly that, straight cut. They are cut with no "angle" on the teeth.

This creates more directional application of force, meaning less friction, and higher acceptable loads until failure, meaning more strength. The downside is the huge noise that they make.




Helical cut gears are cut on an "angle". This makes them quiet, but they create more friction too due to the greater surface area of each gear tooth. Helical cut boxes are normally very strong also, due to the greater surface area per tooth, and therefore the load is distributed over a larger area. They can suffer from thrust loading though, which can place strain on bearings and gears.



The strength of a gearbox is also related to its mettalurgy, and aftermarket boxes are specifically built and designed to take more load than most factory boxes, whether they are helical or straight cut.

I think i will prob go 1-2 strait cut and 3-4 helical.

seems to look like the best option

Thats what i would be doing aswell good combination!

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