7s upgrade question

[Alex Wheaton]

Can I use a Shimano 105STI lever with Hyperglide 7s cassette, or do I need to change over rear hub
to 9s? I recall reading something about pinning the cable over the top of the retainer bolt to give
different travel. My partner's bike has a Shimano 105 groupset (7s Hyperglide) and I'd like to swop
her indexed downtube shifters to a pair of 105 STI levers (brifters) I have in the spare parts box.
Is this do-able? These questions come with an apology in advance since I see there's been a lot of
questions along this line lately, and I probably should know the answer myself.

--
Alex Wheaton

[H. Guy]

In article <3F1DDBFE.7111A70E@dbmagazine.com.au>,
Alex Wheaton <alex@dbmagazine.com.au> wrote:

> Can I use a Shimano 105STI lever with Hyperglide 7s cassette, or do I need to change over rear
> hub to 9s?

if you've got $30 in the budget, you can buy a 9s 105 cassette, take off the largest cog and put 8
on the 7s hub.

[Qui Si Parla Ca]

alex-<< Can I use a Shimano 105STI lever with Hyperglide 7s cassette, or do I need to change over
rear hub to 9s? >><BR><BR>

If it's 9s lever, stack 8 of 9 cogs/spacers from a 9s casstte onto the 7s freewhub body, get a 9s
chain, use the 105 9s lever-

Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
(303)440-3535 http://www.vecchios.com (http://www.vecchios.com/) "Ruote convenzionali costruite eccezionalmente bene"

[Paul Southworth]

In article <HelpfulGuy-F392F1.06312223072003@nnrp06.earthlink.net>,
H. Guy <HelpfulGuy@helpfulplace.org> wrote:
> In article <3F1DDBFE.7111A70E@dbmagazine.com.au>,
> Alex Wheaton <alex@dbmagazine.com.au> wrote:
>
>> Can I use a Shimano 105STI lever with Hyperglide 7s cassette, or do I need to change over rear
>> hub to 9s?
>
>if you've got $30 in the budget, you can buy a 9s 105 cassette, take off the largest cog and put 8
>on the 7s hub.

The 105 cassette uses a carrier, I think he'll need a cheaper loose cog cassette to do that.

9s chain also required for that switch.

[H. Guy]

> >if you've got $30 in the budget, you can buy a 9s 105 cassette, take off the largest cog and put
> >8 on the 7s hub.
>
> The 105 cassette uses a carrier, I think he'll need a cheaper loose cog cassette to do that.

not really a carrier. just 3 bolts running through six (?) of the cogs. take out the bolt, voila!
nine loose cogs!

> 9s chain also required for that switch.

oops. forgot about that. what he said.

[Paul Southworth]

In article <HelpfulGuy-68357F.18313123072003@nnrp02.earthlink.net>,
H. Guy <HelpfulGuy@helpfulplace.org> wrote:
>
>> >if you've got $30 in the budget, you can buy a 9s 105 cassette, take off the largest cog and put
>> >8 on the 7s hub.
>>
>> The 105 cassette uses a carrier, I think he'll need a cheaper loose cog cassette to do that.
>
>not really a carrier. just 3 bolts running through six (?) of the cogs. take out the bolt, voila!
>nine loose cogs!

Oops, you're right, the 105 equipped bike I was looking at has an HG90 cassette, not the same one.

[Alex Wheaton]

Qui si parla Campagnolo wrote:

> alex-<< Can I use a Shimano 105STI lever with Hyperglide 7s cassette, or do I need to change over
> rear hub to 9s? >><BR><BR>
>
> If it's 9s lever, stack 8 of 9 cogs/spacers from a 9s casstte onto the 7s freewhub body, get a 9s
> chain, use the 105 9s lever-
>

Yep, think this is where I'm going... thanks for all suggestions

--
Alex Wheaton