Large sram force shifter weight difference - how come?

Discuss light weight issues concerning road bikes & parts.
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alcatraz
Posts: 973
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

Hey

Can you guys help me explain how come the weight is so different from the specified, even the confirmed ww listed weights?

It's about a 10 speed set of force shifters. According to sram they should be 303gr but I measure 327gr.

Is it possible that some parts have been exchanged to heavier ones?

These shifters have the reach adjust set screws. (I didnt see them at first)

I'm wondering if they are rival/apex shifters with a force housing or something.

/a

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Last edited by alcatraz on Sat Oct 08, 2016 3:09 am, edited 1 time in total.

by Weenie


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oldnslow2
Posts: 220
Joined: Wed Feb 03, 2016 1:50 pm

by oldnslow2

Remove the rubber hoods.

The body says FORCE, the brake and shift levers have Force markings....


alcatraz
Posts: 973
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

Image
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alcatraz
Posts: 973
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

The shift lever seems to be magnesium which is right (not magnetic, not carbon). Brake lever is super light so I assume it's carbon. The worn off spots don't show a shiny surface like the shift lever.

The clamps and bolts/recessed nuts are steel, (magnetic).

Sound right?

/a

alcatraz
Posts: 973
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

Wait do you mean the hoods are not included in the specified weight?

That doesnt sound plausible.

/a

alcatraz
Posts: 973
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

I weighed the shifters without the hoods and they are 140/141 gr.

The hoods are 23/23 gr.

Normal?

/a

kulivontot
Posts: 1170
Joined: Sun May 16, 2010 7:28 pm

by kulivontot

Fwiw, my pre 2012 red shifters weighed 295g with clamps and hoods.
10spd apex weighed 326g.
When I installed switched from apex to red I noticed that the plastic bodies for the hoods and the internals seemed to be identical so I feel the weight savings must come entirely from switching the lever bodies from alloy to carbon

Kurets
Posts: 148
Joined: Thu Feb 25, 2016 9:55 pm

by Kurets

Doesn't force have aluminium shift paddles and carbon brake levers? If there was a version which hade magnesium paddles, maybe that one was lighter than the aluminium version? (but not 30g, though magnesium is 1.74/2.7=0.64 times the weight of aluminium)
The shifter bodys should be the same for almost all of the SRAM range.

Sent from mTalk

alcatraz
Posts: 973
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

Thanks kuretz.

Aha so there are both aluminum and magnesium versions of the force 10s shift levers... I didn't know that. The homepage specifies magnesium.

Anyway, I've made peace with the extra weight. Shit happens...

/a

by Weenie


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