15 speed cassette

Discuss light weight issues concerning mountain bikes & parts.

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andreszucs
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by andreszucs

15 speed cassette

https://www.instagram.com/reel/CrT9LL2t ... MyMTA2M2Y=

320g 15 speeds cassette! SRAM RED 10-11-12-13-14-15-16-17-19-21-24-28 // E13 33-39-46 cluster bolted to the 28t + new Sram Eagle XX-SL T-type Flattop chain , debunking the myth that this chain is not backward compatible with anything, got you Sram.

Having some fun experimenting with this setup, fun fact: unmodified XX1 RD is going through the entire range, on regular spacing, but it is absolutely using 100 % of the parallelogram reach! I’m using an external wireless motor and the benefit of that is total freedom to select how many gears I want, when to start and when to stop. The motor is still set to shift 12 speeds only because I’m on iphone (iOS), but the Android app can be set for 15 speeds, I’ll need to get an Android phone to do that, but for now I can at least test the limitations of the system, and I’m quite impressed that this actually might work, worse case I might need to open the derailleur and do some dremel work to have the parallelogram go just a hair more towards the wheel. But here it is!

As for chain line, I was also expecting to be a problem, but it’s not showing any substantial issues, maybe just the inconvenience to back pedal on the last 46t and the chain might drop to the 39t and to the 33t, but then I just don’t back pedal when I go out on the steeps!

To recap, this is a non-boost hub, on a boost frame, offering extra room for all 15 cogs on regular spacing. Not possible to be done on a 142mm frame.

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Last edited by andreszucs on Sat Apr 22, 2023 3:07 pm, edited 2 times in total.

by Weenie


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vandenhooven
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by vandenhooven

Interesting.
1) Are you using a custom/modified (longer) freehub body or what?
2) You know that even a six speed 13/18 cluster has an 18T cog in it, right?🤪😂

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andreszucs
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by andreszucs

vandenhooven wrote:Interesting.
1) Are you using a custom/modified (longer) freehub body or what?
2) You know that even a six speed 13/18 cluster has an 18T cog in it, right?ImageImage
Regular Xd freehub, what do you mean by the 18t joke?

You can see details here:

https://www.instagram.com/p/CrfI4zAO3kA ... BiNWFlZA==


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fatpinarellorider
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by fatpinarellorider

I think it's a pretty cool idea, especially since you have used existing spacing and don't need a narrower chain.
Well done!

Show us some more pics of how it's bolted together!

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andreszucs
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by andreszucs

fatpinarellorider wrote:I think it's a pretty cool idea, especially since you have used existing spacing and don't need a narrower chain.
Well done!

Show us some more pics of how it's bolted together!
You can see the bolting and construction detail on my Instagram page:

https://www.instagram.com/p/CrfI4zAO3kA ... BiNWFlZA==


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EdWiser
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by EdWiser

I always wonder when I see all these freewheels is so you use every cog?
What ones do you actually use on a regular basis?

fatpinarellorider
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by fatpinarellorider

I'd say he uses all of them, that's why he made it.

OnTheRivet
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by OnTheRivet

Everything you do looks like a Rube Goldberg contraption that I wouldn't trust riding down a sidewalk.

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andreszucs
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by andreszucs

OnTheRivet wrote:Everything you do looks like a Rube Goldberg contraption that I wouldn't trust riding down a sidewalk.
And I should care because?

As long as it’s working for me is what matters.


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andreszucs
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by andreszucs

EdWiser wrote:I always wonder when I see all these freewheels is so you use every cog?
What ones do you actually use on a regular basis?
I use them all, my typical rides here in Boulder Colorado are either going east for some fast paced segments on the flats, or going west for hills climbs, up to 14 grade at FlagStaff mountain plus some interesting dirt roads, so this bike I’m building is a true champ that can take it all, the first half of the cassette gives me that nice road riding feel with small steps, yet, will climb anything using the second half.


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satanas
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by satanas

Nicely done! Almost makes 1x acceptable, but I'd still rather stick with 2x for some uses. ;-)

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wheelsONfire
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Location: NorthEU

by wheelsONfire

Awesome work :thumbup:
Bikes:

Ax Lightness Vial EVO Race (2019.01.03)
Open *UP* (2016.04.14)
Paduano Racing Fidia (kind of shelved)


Ex bike; Vial EVO D, Vial EVO Ultra, Scott Foil, Paduano ti bike.

fatpinarellorider
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by fatpinarellorider

Offer a kit, sell it.🤪

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andreszucs
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by andreszucs

fatpinarellorider wrote:Offer a kit, sell it.Image
I thought about it, but it would only be attractive to consumers if it’s the entire ecosystem including the external wireless box.


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by Weenie


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fatpinarellorider
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by fatpinarellorider

How did you get on with the shifter?
How is that end set up?

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