Product Overview

Overall rating:

Score 10

Pros:

  • Cheapest way to get power measurement
  • Easy to use
  • Easy to set up

Cons:

  • Not much at all

Product:

Stages Crank Power Meter DA 9000

Manufacturer:

Price as reviewed:

£799.00

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Although £799 seems like a lot of money for a left-hand crank, Stages is the cheapest way to get an accurate read on the effort you’re expelling.



Set-up is stunningly simple and use is the same.



Thanks to temperature calibration happening every two minutes, once set up you should expect accurate and repeatable readings, which is just what I got.



Being a crank-based system, it’s possible to compare data and while I found the Stages read 20 watts higher it closely mirrored the other power meter I compared it with.

Verdict

It’s early days but so far Stages is a brilliant, accurate system with no downsides and what’s more it only adds ?20 grams.

Full Specification

Supplier:
www.saddleback.co.uk

  • spencer wood

    I had one for four months, worked for about 2 weeks in total, sent back once for repair, worked then stopped again. Then when i asked for a replacement was told there was a 4-5 week lead time. I asked for a refund. Shame as purchased as it seemed the best option for easily swapping between bikes, and really liked training with power.

    Mine more or less had to ahve a new battery every time you wanted to use it.

    But i could not justify £699 on something that seemed so unreliable.

    My experience would say this has been realeased to early and they are still ironing out issues, i would suggest wating 12 months until these are sorted, and when pro teams are using i think that is a sign they are reliable.

    Shame as great idea, and very easy to move between bikes, and compared to others on the market “cheap”.

    **Update**

    Seems my posts to the Stages Facebook page keep mysteriously disappearing as well, soon after posting. Nothing untruthful just stating the facts and they keep being taken down, another down point in my book.

  • Graeme

    Agree with John. I got one from the UK, and used it once in wet weather…..then not working. Supplier changed battery and the cover and it worked again for 2 rides, one not so wet then later that day for a indoor session. Week later, not working again…..unit was in the house the whole time beside a radiator. Another return for an item I really want to use for my winter training. Easy to use but maybe pay more for something that works in the UK given the weather we get!

  • John

    I got one of these last April directly from the US. While it is easy to install and use, it has major flaw in that it just does not keep the water out while riding in wet weather. The result is a loss of data and frequent battery changes. I’ve had the unit replaced twice and in fairness Stages customer service is spot on. But they have to sort out this issue.

  • Tim Dadswell

    I’ve been using one of these cranks for a few weeks now. Prior to purchasing, I had a number of the same concerns around only measuring one leg etc. There are some excellent, and seemingly independent pieces of review work on the web, such as those published by “slowtwitch” and “dcrainmaker” (Google will find these) that have done a lot of analysis around the typical areas of concern (accuracy, consistency, etc) and have shown Stages in a favourable light.

    Ade – there is no issue with pedals with Stages, as it’s just a normal crank, with conventional pedal threads.

  • Ken Evans

    SRM and other spider based systems are difficult to use on MTB systems with small chainrings, the Stages unit looks much better for this. Tests are being done to compare the results from Stages with SRM to see if they reliable. Potential buyers should be aware that the original patents of SRM have expired, and that there are now fewer barriers to market entry for other firms. If someone makes a cheap enough and reliable unit then it will sell in volume.

  • Ron

    because it is on the left crank arm it is only reading the force from your left leg. I assume this is one aspect that can cause it to read slightly lower if you are right leg dominant? While a crank or wheel or pretty much any other power meter out there is not isolated to one leg. That is the majour short coming I see with this power meter implementation. Though crank based meters such as SRM, rotor, and quarq are on the drive side, they attach to the spider and therefore are subjected to the force from both legs as they transmit force through the spider to the chain ring. I think personally this is a majour short coming even though it produces numbers similar to the test comparison meter. So in fact it is not really a crank based system and is therefore also not directly comparable as it only measures 1/2 the torque input, it then has to apply a factor to come up with what the real power is.

  • Ade

    Assuming you already use or want to change to a compatible set of pedals.