Direto power off by around 50 watts

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Re: Direto power off by around 50 watts

Postby rickal@iinet.net.au » Tue Jun 26, 2018 12:13 pm

I have a similar problem that I have started a new thread on.
The difference is that mine was reading a certain value when I first got it, and after 1 week it dropped by about 60w (see my thread "Sudden wattage drop"). Now I do not know what should is the correct figure to start with (if in fact either is correct) as I have no means of checking.
More worrying however is the inconsistancy. If this keeps on happenning it would be impossible to monitor progress.

Also, how much would belt tightenning be expected to change the wattage figure. It seems that changing the value by a few points when the overall value is >6000 is not really going to alter much.

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Re: Direto power off by around 50 watts

Postby Diggers » Tue Jul 17, 2018 5:36 pm

This is a real shame as it seems there are a lot of us with the same problem. I have two stages power meters one for my winter bike and one for my old summer bike. I've compared both to the Direto and there are much bigger than the advertised 2.5% difference. I'm only a little bloke and not a great cyclist. My stages FTP is usually around 220-230. Doing a power test using the Direto tells me it is 170. No WAY!

I bought mine for Christmas and by the end of Jan I had sent it back to the retailer who were brilliant and sent me a new one. sadly the second one was just as inaccurate. For a while I gave up. I mainly use Sufferfest not Zwift so I'm not that bothered about the accuracy in so far as as long as the measurements are consistent with each other, Sufferfest just sets all my intervals to match a 170 FTP so no real harm to my training in winter which is mainly turbo based.

However, now it is summer, it means I need to keep running two tests, one for the stages and one for the Direto. This is a complete pain.

A second and probably far more serious issue is that when I pedal over 100 RPM, the cadence becomes completely inaccurate. Sometimes it will go up and down from 100 to 160RPM in a matter of seconds. This makes using ERG mode impossible on Sufferfest because it isn't consistent.

I have been dealing with the support team at Elite for a couple of months who have been very responsive and have suggested a number of fixes but none have worked. Last week the Direto actually died. It started to make a loud clunking noise and told me I was knocking out 30,000 watts!! Like I said, I'm only a little bloke and not a great cyclist. This lasted around 5 minutes and then all resistance disappeared.

The Elite helpdesk confirmed this means it was broken and have agreed I can have a replacement. However, I have lost confidence in the product as that is two units which have not worked as advertised or as reviewed.

It seems to me the only advantage of the Direto over the dumb trainer/power meter combo is ERG mode for virtual training. As I only use Sufferfest, I am inclined to find a cheaper direct drive but dumb trainer and then invest in a pedal based meter (Stages mark 1 meters that I have are too fragile in the wet but fine in the garage). Using the manual resistance lever on my old dumb trainer worked fine for fine tuning Sufferfest but clearly won't work so well for racing in Swift or trying to ride famous climbs on Fulgaz.

Given I first purchased the unit at the start of December, I doubt I will get my money back so will probably get the replacement and shove it straight on Ebay. Clearly there are technological issues with the power meter which Elite need to iron out during manufacturing. This is such a shame given the amazing reviews it gets.

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Re: Direto power off by around 50 watts

Postby Elite Admin S » Wed Jul 18, 2018 1:01 pm

Hi Diggers

We're sorry for the situation.
Unfortunately, we weren't able to understand the cause of the issues you have experienced. You've sent back the first Direto before we had the time to analyze deeply the situation and the second one has broken down during the assistance tests. I don't know if the issue was due to some configuration/calibration setting or if the sensor was already starting to break down when you contacted us.

Of course, we will replace immediately the faulty trainer.
What I can say is that we are confident that the new one will work properly. I can assure that it is a solid trainer, we have sold many Direto and people around the world are really satisfied with its precision.

What I can suggest is this: accept the replacement and give it another try.
I'm sure that you'll get very good precision.

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