STRAIGHT CUT GEARS......

[SPEEDWELL66]

HI BRO'S

I WANT TO KNOW IF THIS TYPE OF GEARS REALLY INCREASE POWER TO THE ENGINES, OR GIVE SOME HELP TO THE CRANK OR WHATEVER 

THE REASON IS THAT I LIKE A LOT THE SOUND THAT THIS GEARS MAKE, BUT ONE OF MI FRIENDS SAYS THAT, STRAIGHT CUT GEARS ARE A WASTE OF MONEY 

THANKS!

[Bruce]

Straight cut gears eliminate the axial thrust that helical gears cause.  The axial thrust increases with spring tension.  If you have BB Chevy springs, or stiff K800s, you pretty much must use straight cuts since the stock thrust bearing (doubled) probably won't withstand the stress.  However, if you are using VW sized duals or less, you don't need straight cut gears.
As for the hp difference, you probably couldn't measure the difference on any dyno, it is very slight.
If you like the sound, get them.  If money is tight, spend your money on the heads, where you'll actually make more power.

[pughdog]

They do sound nice though..... 

<a href="http://www.youtube.com/v/tQKy7jUp6AM" target="_blank">http://www.youtube.com/v/tQKy7jUp6AM</a>

[Eric Justus]

Someone please post a vid of Russ Hare's straight cut gears he had in the Sloval. Now those things sounded the cooooolest

[stealth67vw]

Hear you go.

<a href="http://www.youtube.com/v/pZzfZ0Wxvbo" target="_blank">http://www.youtube.com/v/pZzfZ0Wxvbo</a>

[pughdog]

  wow!

Look at those front tyres!

[SPEEDWELL66]

Straight cut gears eliminate the axial thrust that helical gears cause.  The axial thrust increases with spring tension.  If you have BB Chevy springs, or stiff K800s, you pretty much must use straight cuts since the stock thrust bearing (doubled) probably won't withstand the stress.  However, if you are using VW sized duals or less, you don't need straight cut gears.
As for the hp difference, you probably couldn't measure the difference on any dyno, it is very slight.
If you like the sound, get them.  If money is tight, spend your money on the heads, where you'll actually make more power.

THANKS BRUCE, I REALLY APRECIATE YOUR COMENTS


JOSE LUIS

[Bewitched666]

HP increase is next to none almost

[SPEEDWELL66]

CONTINUING WHIT THE TOPIC, WHAT ABOUT THE STRAIGHT CUT GEARS FROM "AA" THE ONES MADE OF CROMOLY.

THIS ONES:


GOOD, REGULAR, BAD.............LET ME KNOW BRO'S!

JOSE LUIS