Newish ZEROING crankset - Ingrid clone

[BalticSea]

I have 24mm 7075 alloy axle spindles on all my bikes. I haven't had any issues...yet. The weight savings are very noticeable. All I do is hill climb and go out of saddle quite often. Though I weigh between 68-70kg. I figure at my size, I can get away with a lot of weight weenie hacks that thicc cyclists wouldn't be able to pull off.

What's the realistic weight difference between 24mm steel and alloy spindles? 30, 50, 70 grams? 100 grams?

[jonathanf2]

What's the realistic weight difference between 24mm steel and alloy spindles? 30, 50, 70 grams? 100 grams?

Depends on the crankset. The Racework carbon crankset is about 377g and the Goldix/Zeroing crankset w/hollowed out crank arms is about 475-480g. In order to match those weights, you have to go Dura Ace of SRAM Red at a significantly higher cost.

[raisinberry777]

What's the realistic weight difference between 24mm steel and alloy spindles? 30, 50, 70 grams? 100 grams?

Comparing the Senicx PR2 and PR3 cranks (the only difference seems to be that the PR3 has a 24mm steel spindle, PR2 has a mm DUB alloy spindle) the difference is about 70-80 grams.

[BalticSea]

Depends on the crankset. The Racework carbon crankset is about 377g and the Goldix/Zeroing crankset w/hollowed out crank arms is about 475-480g. In order to match those weights, you have to go Dura Ace of SRAM Red at a significantly higher cost.

I did some digging, found weight for non-Shimano spindles - 160g for steel, 90mm for alloy. 70 grams savings is less than  0.1% of total system weight (typical accuracy of digital scales is 0.1%). Comprimising the durability of one of the highest stress areas for literally meaningless gains is not what I'd recommend.

[jonathanf2]

I did some digging, found weight for non-Shimano spindles - 160g for steel, 90mm for alloy. 70 grams savings is less than  0.1% of total system weight (typical accuracy of digital scales is 0.1%). Comprimising the durability of one of the highest stress areas for literally meaningless gains is not what I'd recommend.

The alloy spindle axle 7075 T6 cranksets I received all have manufacturing date stamps, so at least I can keep track of their wear life. They've all held up just fine. Plus I rotate my bike usage to reduce component wear and keep on top of my regular bike maintenance.

[sandwich]

I think an aluminum spindle is fine in the right application.  Mine would be going on a TT bike which will rarely see loads over 1000w, and minimal mileage all things considered.  I wouldn't use one on a mountain bike or sprinter bike, but even that might be fine with a light rider.

[Sebastian]

I’m bringing this thread back because I’m eyeing these cranks for the 11/11 sale. Does anyone have long term experience with these 24mm Aluminium axles? Have the issues with these been ironed out? I’m thinking of using these with BB30 bearings and use a delrin sleeve to save the aluminium axle from the inevitable wear marks that steel bearings would otherwise cause.

I’m no flyweight though. Around 82kg. So I’m a bit worried they might not last.

[courdacier]

I think they're ok - no issues over the last 6 months. You definitely don't want to over-tighten those bolts.
They feel like both the self-extracting bolts and the axle were made out of some regular Al alloy - I had to grease several times to tighten them without squeaking.
Having said all that, I took them off my bike (200lbs) and gave them to one of my kids (80).
YMMV.

[Sebastian]

Having said all that, I took them off my bike (200lbs) and gave them to one of my kids (80).
YMMV.

Did they feel stiff enough to you?

[amacal1]

I had just ordered one of the Evosid branded ones, but it looks virtually identical. Does anyone have any experience with these?

[courdacier]

Did they feel stiff enough to you?

they were stiff enough for faffing about, but I would not race cx on them. they flexed but not an alarming amount. if you are concerned about flex, just get CF tbh.