Author Topic: clutchless 5 speed's or Back cut trans gears?  (Read 506 times)

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Offline westcomb

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clutchless 5 speed's or Back cut trans gears?
« on: June 24, 2016, 05:13:57 AM »
So I need to do a little work to my 5 speed been missing 3 rd gear a lot!  ............ While I'm in there tho ........... does anyone back cut the gears? or is there a way to mod the trans for clutchless shifting?

I ask because I used to cut my own trans gears when I drag raced 4 wheelers? ...... I had what is called a override trans and the difference a override trans made was huge! I would love to see a Harley trans shift like my 4 wheeler did!  :up:

If anyone has info that would be great! I have been thinking of just back cutting all the gears?  But every clutchless trans I have ever done needed a lot of shift drum work as well and I can not find any real info!

Not really looking to add a air shifter at this time? but maybe that is the only answer?


Offline Just Nick

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Re: clutchless 5 speed's or Back cut trans gears?
« Reply #1 on: June 24, 2016, 01:01:45 PM »
Call R&D Motorsports In Clearwater FL  727-443-4552 They can back cut your gear and get you what you want
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Offline Azgunner

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Re: clutchless 5 speed's or Back cut trans gears?
« Reply #2 on: June 24, 2016, 03:39:27 PM »
What are the benefits of back-cut gears?
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Offline Wicked

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Re: clutchless 5 speed's or Back cut trans gears?
« Reply #3 on: June 24, 2016, 05:21:46 PM »
In a nutshell?  Better meshing of gears at power shifting because the backcutting allows the gears to help pull themselves together more.  Backcut wedge pulling against backcut opposite wedge....

Offline turboprop

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Re: clutchless 5 speed's or Back cut trans gears?
« Reply #4 on: June 24, 2016, 06:40:16 PM »
Zippers also offers back cutting service for five speed gear sets. I just had a couple gear sets done, I think the cost was about $275 to do the complete gears set. Hard to believe a harley type five speed transmission could shift this smoothly and reliably. Dollar for dollar, this was probably the best under $300 upgrade I have ever done to a harley.

Worth pointing out is the process of back cutting gears is not a one size fits all type of thing. The customer must specify what type of use the transmission will see.

http://www.zippersperformance.com/5-speed-transmission-services.html
« Last Edit: June 24, 2016, 06:46:49 PM by turboprop »
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Offline westcomb

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Re: clutchless 5 speed's or Back cut trans gears?
« Reply #5 on: June 25, 2016, 07:18:15 AM »
I seen some info on the Zippers stuff! and it sounds like what I am after ............ thanks for the info!

I still need to pull my trans out and take a good look at it first ...... and at this point I'm not sure I could have it back in time for the AMRA race July 22 -24  :emoGroan: ........... So I may just be cutting it myself! If I mess it up I guess I will just eat the gear set  :beer:

Anyone have Pictures of a cut Harley 5 speed by chance!  :SM: