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 Post subject: Re: New Drivetrain
PostPosted: Wed Mar 13, 2013 5:19 am 
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timid kitty
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I am currently running xo with xx cassette

I want in on this action


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 Post subject: Re: New Drivetrain
PostPosted: Wed Mar 13, 2013 9:31 am 
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bad kitty!
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Shibiwan wrote:
Magura wrote:
Shibiwan wrote:
Sti wrote:
So what do the alternating XX1 teeth actually do for chain retention?


Yes, supposedly "sideways retention" but the larger effect is probably "marketing" IMO.

-S


Within a couple of weeks, we will know if that is so.

Magura :)


haha... already sourcing 7075 plates form my materials supplier...



Hmm, here it requires begging, crying, and lots of patience.


Magura :)

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 Post subject: Re: New Drivetrain
PostPosted: Mon Mar 18, 2013 12:49 am 
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revolting kitty
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Just thinking about this and moving to one ring allows for a MUCH shorter chain. How and why would the chain come off with a taller +/- chain ring config with a regular rear derailuer?


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 Post subject: Re: New Drivetrain
PostPosted: Mon Mar 18, 2013 6:46 am 
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stealth kitty
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Plates ordered... haha going to make a run of them.

I need to know the following:

1. What cranks you bastards have.

2. What BCD pattern.

3 How many teeth you want? 38? 40? 42?


I'm going to start at the lowest common denominator (probably SRAM 4x120 first because that's what I got) then make variants to fit Shimano etc.

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 Post subject: Re: New Drivetrain
PostPosted: Mon Mar 18, 2013 8:53 am 
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bad kitty!
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The size everybody seems to dream about, is 104BCD 32T.


Magura :)

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 Post subject: Re: New Drivetrain
PostPosted: Mon Mar 18, 2013 11:27 am 
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yappin' kitty
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Magura wrote:
The size everybody seems to dream about, is 104BCD 32T.


Magura :)


Exactamundo.

Does SRAM claim that the XX1 derailleur or cassette have any effect on chain retention? I know shockingly little about the system because I am not intrigued.

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 Post subject: Re: New Drivetrain
PostPosted: Mon Mar 18, 2013 2:51 pm 
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revolting kitty
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Yes, the type 2 derailleur is supposed to help. However, with only a 25 tooth difference and taller teeth, I'm willing to bet a regular derailleur will work fine.


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 Post subject: Re: New Drivetrain
PostPosted: Mon Mar 18, 2013 2:59 pm 
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pussy
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I'd say the Type 2 RD has the biggest impact of all the recent tech updates. Tall chainring teeth are nice (you do not need XX1 for that) but they do not prevent the chain from slapping like the new RDs do.


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 Post subject: Re: New Drivetrain
PostPosted: Mon Mar 18, 2013 3:09 pm 
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revolting kitty
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Even with a shorter chain? I could shorten my chain by 10 links if I go to a 1x, right?


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 Post subject: Re: New Drivetrain
PostPosted: Mon Mar 18, 2013 3:12 pm 
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stealth kitty
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Sti wrote:
I'd say the Type 2 RD has the biggest impact of all the recent tech updates. Tall chainring teeth are nice (you do not need XX1 for that) but they do not prevent the chain from slapping like the new RDs do.


:text-yeahthat:

+1 on the Type 2 RD. Haven't thrown a chain since.

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 Post subject: Re: New Drivetrain
PostPosted: Mon Mar 18, 2013 3:18 pm 
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revolting kitty
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This is what I've got:

Crankset Shimano XT FC-M770, 44/32/22T / 175mm
Rear Derailleur Shimano XT RD-M772SGS Shadow, 9-Speed
Cassette Shimano XT CS-M770, 9-Speed, 11-34T

I want it to be 32 x 11/34 with no chain guard. Can I do it with an XX1 style ring?


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 Post subject: Re: New Drivetrain
PostPosted: Mon Mar 18, 2013 3:44 pm 
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stealth kitty
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OK suggestions noted.

It will be:

32T

4x120 BCD or 4x104 BCD



I will have to work on the design, CAM and then squeeze it into the manufacturing schedule.

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 Post subject: Re: New Drivetrain
PostPosted: Thu Mar 21, 2013 5:25 pm 
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stealth kitty
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Ok.. finally on vacation for a few days so I can use my time to finish the CAD design of the chainring. :D

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 Post subject: Re: New Drivetrain
PostPosted: Thu Mar 21, 2013 5:53 pm 
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bikini loving kitty!
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your avatar: enhance. enhance. enhance.


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 Post subject: Re: New Drivetrain
PostPosted: Thu Mar 21, 2013 5:55 pm 
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yappin' kitty
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Man, this is sweet--32tx104bcd for me. Will the chainrings work for 9spd as well as 10spd?
I've been running 1x9 for quite awhile with the MRP guide, and it'd be nice to have the "clean look" w/o buying a Type2 derailleur.

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 Post subject: Re: New Drivetrain
PostPosted: Thu Mar 21, 2013 6:15 pm 
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pussy
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Sslikesnake wrote:
Man, this is sweet--32tx104bcd for me. Will the chainrings work for 9spd as well as 10spd?
I've been running 1x9 for quite awhile with the MRP guide, and it'd be nice to have the "clean look" w/o buying a Type2 derailleur.


You will need the Type2 RD, too. The profiled teeth are supposed to help with dropping the top chain and let you get rid of a top guide. Type2 RD deals with a bottom guide.


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 Post subject: Re: New Drivetrain
PostPosted: Thu Mar 21, 2013 6:15 pm 
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stealth kitty
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Sslikesnake wrote:
Man, this is sweet--32tx104bcd for me. Will the chainrings work for 9spd as well as 10spd?
I've been running 1x9 for quite awhile with the MRP guide, and it'd be nice to have the "clean look" w/o buying a Type2 derailleur.


I'll see how it goes...I think I can make a small mod to make it specific to 9 or 10 speeds.

-S

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 Post subject: Re: New Drivetrain
PostPosted: Thu Mar 21, 2013 6:33 pm 
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yappin' kitty
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Sti wrote:
Sslikesnake wrote:
Man, this is sweet--32tx104bcd for me. Will the chainrings work for 9spd as well as 10spd?
I've been running 1x9 for quite awhile with the MRP guide, and it'd be nice to have the "clean look" w/o buying a Type2 derailleur.


You will need the Type2 RD, too. The profiled teeth are supposed to help with dropping the top chain and let you get rid of a top guide. Type2 RD deals with a bottom guide.


Ok, gotcha. That makes sense.

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 Post subject: Re: New Drivetrain
PostPosted: Thu Mar 21, 2013 7:14 pm 
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revolting kitty
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So, will my XT Shadow work?


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 Post subject: Re: New Drivetrain
PostPosted: Thu Mar 21, 2013 9:28 pm 
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bad kitty!
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Wmac wrote:
So, will my XT Shadow work?


I think it takes a combo of both clutch derailleur, and the $$1 style chain rings, to allow for no guide.


Magura :)

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 Post subject: Re: New Drivetrain
PostPosted: Thu Mar 21, 2013 9:33 pm 
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revolting kitty
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So, you're saying I'll need shadow plus version - dab nabbit!


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 Post subject: Re: New Drivetrain
PostPosted: Thu Mar 21, 2013 9:45 pm 
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bad kitty!
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Yes :(

.....or just get a Zee, and see how you like it. They're cheap, and work rather well.


Magura :)

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 Post subject: Re: New Drivetrain
PostPosted: Fri Mar 22, 2013 12:40 am 
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revolting kitty
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Oh, $79 bucks - daddy like: http://www.jensonusa.com/!8gac5M-sanDRB ... nQodMUcATw

And $79 for a 10spd cassette: http://www.jensonusa.com/Bicycle-Casset ... d-Cassette


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 Post subject: Re: New Drivetrain
PostPosted: Fri Mar 22, 2013 12:43 am 
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bad kitty!
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Wmac wrote:


Exactly ;)

....and the clutch is even adjustable.


Magura :)

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 Post subject: Re: New Drivetrain
PostPosted: Fri Mar 22, 2013 12:45 am 
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bad kitty!
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BTW, don't forget to take a look at the Zee shifter, it's rather nice as well, and like $30.


Magura :)

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 Post subject: Re: New Drivetrain
PostPosted: Fri Mar 22, 2013 12:48 am 
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pussy
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And $79 bucks for a TA hub: http://www.amazon.com/Shimano-FH-M640-H ... B008M4CCQG
Not a light one, but bomb proof, quiet and with 36 POE.


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 Post subject: Re: New Drivetrain
PostPosted: Fri Mar 22, 2013 12:51 am 
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revolting kitty
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Hmmm. So, I could get a new cassette, zee der and shifter and a shibi ring and be done. This sounds VERY promising.


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 Post subject: Re: New Drivetrain
PostPosted: Fri Mar 22, 2013 12:53 am 
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bad kitty!
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That's pretty much the way I have chosen to go by it, though I'll use a M :) tm. ring ;)


Magura :)


EDIT: I picked the Zee over the Saint, as breaking derailleurs do happen, and like this it's no big deal.
The performance is pretty much the same, and the weight is not too far off neither.
The same for brakes.
The Zee group has left me pretty impressed.

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 Post subject: Re: New Drivetrain
PostPosted: Fri Mar 22, 2013 2:06 am 
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stealth kitty
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Bah... 10% off coupon code from Jenson and it no work on discounted items.


$%@!@#$!

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 Post subject: Re: New Drivetrain
PostPosted: Fri Mar 22, 2013 2:08 am 
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stealth kitty
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Magura wrote:
Wmac wrote:
So, will my XT Shadow work?


I think it takes a combo of both clutch derailleur, and the $$1 style chain rings, to allow for no guide.


Magura :)


Why do you even need a guide with a 1x anything drivetrain? Does the chain come off more easily when you go to a 1x setup?

-S

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