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Ben_T
Worn
Joined: Aug 14, 2007
Posts: 710
Location: Auckland. North Shore
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 Posted: Sun 6th Apr 3:17pm Post subject: How To Make Custom Cassettes? |
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Hello.
I would like to know how to make a custom 6 speed dh cassette (like in the picture below)
but for sram x9 deraliur and x7 shifter.
Thanks
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Wobbler
Mangled
Joined: Nov 21, 2005
Posts: 13,210
Location: doing a skid
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| Posted: Sun 6th Apr 3:22pm Post subject: |
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undo cassette
remove gears you don't want
use cassette/single speed spacers to take up the left over space
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Astoria Paranoia
Wrecked
Joined: Aug 20, 2002
Posts: 5,041
Location: OFF THE COAST OF SOMALIAAA!!
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| Posted: Sun 6th Apr 3:23pm Post subject: |
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And don't forget to re-limit your mech with longer bolts
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Mr_Bob
Mangled
Joined: Apr 14, 2005
Posts: 10,865
Location: Tga
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| Posted: Sun 6th Apr 3:24pm Post subject: |
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There will be a small allen key on the main body of the cassette, undo it, and find spacers from an identical cassette.
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ShortStuff
Thrashed
Joined: Mar 19, 2006
Posts: 1,894
Location: Popping pmiples
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| Posted: Sun 6th Apr 3:27pm Post subject: |
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some cassettes have a very tiny allen bolt going right through from gear 1 to gear 6 or seven, you will need a super small allen key to undo this. Others are held together with 3 rivet type things once again going from gear 1 to gear 6 or 7, you can bang these out with a hammer and nail punch. after that do what wobbler said.
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tives
Thrashed
Joined: Jun 15, 2007
Posts: 1,606
Location: petone
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| Posted: Sun 6th Apr 4:34pm Post subject: |
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whats the reason behind people doing this? is it smoother shifting? or mainly just lighter?
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Astoria Paranoia
Wrecked
Joined: Aug 20, 2002
Posts: 5,041
Location: OFF THE COAST OF SOMALIAAA!!
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| Posted: Sun 6th Apr 4:35pm Post subject: |
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Yep lighter.
Some would say more rock clearance too
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Wobbler
Mangled
Joined: Nov 21, 2005
Posts: 13,210
Location: doing a skid
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| Posted: Sun 6th Apr 4:44pm Post subject: |
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can pick the gear ratios you want, if you wanted smaller/bigger/different changes between ratios.
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Craftworks_rider
Scuffed
Joined: Aug 14, 2003
Posts: 346
Location: Berlin
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| Posted: Sun 6th Apr 5:01pm Post subject: |
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Gives extra clearance from the spokes with the chain and deraliur. You can remove the gears that are 1 tooth apart at the bottom of a road cassette to have 2 teeth steeps instead of one. Gives faster shifting without getting too bigger gaps.
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chalky
Wrecked
Joined: May 01, 2006
Posts: 5,929
Location: Timaru
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| Posted: Thu 25th Sep 5:49pm Post subject: |
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If you have a 8 speed cassette, with the tiny bolt through the 1st 6 gears, is it possible to take off just the largest cog and then put a spacer in?
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Astoria Paranoia
Wrecked
Joined: Aug 20, 2002
Posts: 5,041
Location: OFF THE COAST OF SOMALIAAA!!
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| Posted: Thu 25th Sep 6:05pm Post subject: |
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| chalky wrote: | | If you have a 8 speed cassette, with the tiny bolt through the 1st 6 gears, is it possible to take off just the largest cog and then put a spacer in? |
Yes but you may have to transfer the bolt hole to your new largest gear if the spacers will get in the way of the bolthead.
If it is you'll have to step the hole for the bolt to recess into.
And you'll have to find a shorter bolt.
You could try not running the bolt altogether but that could lead to freehub body notching.
If I remember rightly the PG-970 DH is not bolted together.
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chalky
Wrecked
Joined: May 01, 2006
Posts: 5,929
Location: Timaru
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| Posted: Thu 25th Sep 6:09pm Post subject: |
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Thanks, might have to put more thought into this than previously thought
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dh_winner
Flogged
Joined: Feb 25, 2003
Posts: 3,768
Location: CHCH
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| Posted: Thu 25th Sep 6:57pm Post subject: |
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| Astoria Paranoia wrote: |
If I remember rightly the PG-970 DH is not bolted together. |
correct.
I think you can just go to a roadie shop and buy individual sprockets. Slap them on with spacers between and to take up the space left over. Fine if you have a steel freehub bout not good it you have an alloy or Ti one. Retune deralier to fit.
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dh_winner
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Joined: Feb 25, 2003
Posts: 3,768
Location: CHCH
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konaking
Flogged
Joined: May 28, 2006
Posts: 2,374
Location: Northshore Auckland
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| Posted: Sat 27th Sep 5:12pm Post subject: |
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also you get the bennifits of a very short chain= less weight=less chain slap
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