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Author Topic: Back cut gears - what are they  (Read 5268 times)

Offline FloydV

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Back cut gears - what are they
« on: October 31, 2005, 02:23:21 PM »
I have seen a reference to people using back cut gears in their transmissions. What is this and why is it helpful?
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Offline h82bbad

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Re: Back cut gears - what are they
« Reply #1 on: October 31, 2005, 02:43:10 PM »
keeps it from popping out of gear. A common problem with drag raced Busa's (and some street driven ones)
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Offline Twisted

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Re: Back cut gears - what are they
« Reply #2 on: October 31, 2005, 03:12:42 PM »
"dogs"



input output BMW tranny, not exactly how a busa tranny is laid out but it gives you an idea how they grip, I think they notch the dogs so they grip and hold better?



busa tranny looks more like this, constant mesh type

« Last Edit: October 31, 2005, 03:18:07 PM by Twisted »
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Offline FloydV

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Re: Back cut gears - what are they
« Reply #3 on: October 31, 2005, 03:29:42 PM »
Thanks. Big difference between the two.
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The mystical trend of our time, which shows itself particularly in the rampant growth of the so-called Theosophy and Spiritualism, is for me no more than a symptom of weakness and confusion.

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Offline Quijinn

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Re: Back cut gears - what are they
« Reply #4 on: October 31, 2005, 06:56:47 PM »
Fav I took some pics of my trans when I had it apart. If you want I can post picks of the undercut dogs.
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Offline abe67

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Re: Back cut gears - what are they
« Reply #5 on: October 31, 2005, 08:29:54 PM »
pic's please
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Offline FloydV

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Re: Back cut gears - what are they
« Reply #6 on: November 01, 2005, 09:03:38 AM »
Yeah, pics please.
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The mystical trend of our time, which shows itself particularly in the rampant growth of the so-called Theosophy and Spiritualism, is for me no more than a symptom of weakness and confusion.

Albert Einstein, 1921

Offline TRNorBRN6001

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Re: Back cut gears - what are they
« Reply #7 on: November 01, 2005, 09:23:08 AM »
APE has pics and explaination on cut trans. Most people cut trans so dog ears (gears) engage easier under a load. Not nescesary for clutchless shift, but aids in engagement(shift fork moves gear over to another to ramp up and lock together). Can cut the other side also so that dis-engagement is easier too. Need some trans guys on here to give a better eplaination. I think MH has some in stock for ya. :D :D :D   
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Offline Jay

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Re: Back cut gears - what are they
« Reply #8 on: November 01, 2005, 09:19:45 PM »
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