2nd Hand Powertap Pro torque offset numbers

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GasCyclist
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2nd Hand Powertap Pro torque offset numbers

Postby GasCyclist » Sun Nov 16, 2014 10:23 pm

Hey guys,

My mate has given me some carbon tubs with a Powertap Pro laced into rear wheel. A try before I buy type deal.he mentions the numbers were inaccurate but said could just be the head unit of need batteries changed.

Had a look at the joule unit and went to the manual zero setting and torque number is 764 and Offset is 764.... My understand was this number needs to be around the 512 number. Does this mean the powertap has seen better days??

Had a spin on the trainer and power with not too much force spinning was around the 100-150 range.

Keen to hear your thoughts

Cheers
Trek 1.5, Cannondale Supersix, Specialized Langster

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toolonglegs
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Re: 2nd Hand Powertap Pro torque offset numbers

Postby toolonglegs » Sun Nov 16, 2014 10:33 pm

Should be 512 plus or minus a little bit, it's not the head unit.
I wouldn't buy it.

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GasCyclist
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Re: 2nd Hand Powertap Pro torque offset numbers

Postby GasCyclist » Sun Nov 16, 2014 10:35 pm

Ok damn it lol was going to give me a good deal. Guess I will continue to train with a HRM.
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GasCyclist
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Re: 2nd Hand Powertap Pro torque offset numbers

Postby GasCyclist » Sun Nov 16, 2014 10:59 pm

Are these units worth repairing or servicing to calibrate?

Just wondering if the price is good say $500 it may be worth fixing. Currently wants $700 for it.
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toolonglegs
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Re: 2nd Hand Powertap Pro torque offset numbers

Postby toolonglegs » Sun Nov 16, 2014 11:41 pm

What year model is the hub?.
Au $700 isn't a good deal ... neither is $500 I would think, but that depends on the year model and the rim etc.

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Re: 2nd Hand Powertap Pro torque offset numbers

Postby nickobec » Mon Nov 17, 2014 2:30 am

toolonglegs wrote:What year model is the hub?.
Au $700 isn't a good deal ... neither is $500 I would think, but that depends on the year model and the rim etc.
+!

$700 will get you a new G3 hub, stages or single sided garmin vector power meter

So $500 for 2nd hand powertap pro wheel, it would need to be a very late model (ie the black one) and a very nice rim for me to say value for money. And my Powertap elite+ wheel cost me $1k 4 years ago, and my G3 wheelset almost $2k 2 year ago.

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toolonglegs
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Re: 2nd Hand Powertap Pro torque offset numbers

Postby toolonglegs » Mon Nov 17, 2014 5:32 am

My G3 cost me Au $600 for the new hub and another $250 for a good wheel build. In January this year.

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GasCyclist
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Re: 2nd Hand Powertap Pro torque offset numbers

Postby GasCyclist » Mon Nov 17, 2014 8:08 am

Good thing I asked here first then :) hub has blackcap and silver body so assume it's old.

Wheels are Flashpoint 60 Carbon Tubulars.. Front and rear. But if it's going to cost $700 + to repair then not worth it. The wheels look nice though supposedly made by Zipp but old technology.
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GasCyclist
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Re: 2nd Hand Powertap Pro torque offset numbers

Postby GasCyclist » Tue Nov 18, 2014 3:43 pm

toolonglegs wrote:My G3 cost me Au $600 for the new hub and another $250 for a good wheel build. In January this year.
Where did you get a new G3 for $600??????? Cheapest I can find is $780 from the Wiggle website.

Was $250 for a brand new wheel - Would installing the unit onto an existing wheelset be cheaper?

Called my mate and told him to take back the wheelset... Going to cost an additional $200 according to Monza in Melbourne to Recalibrate so suppose getting a new unit would be better. I think the carbon wheelset made me think it was worth it.
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toolonglegs
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Re: 2nd Hand Powertap Pro torque offset numbers

Postby toolonglegs » Tue Nov 18, 2014 4:16 pm

Have a look at some of the US eBay sites etc.

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GasCyclist
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Re: 2nd Hand Powertap Pro torque offset numbers

Postby GasCyclist » Wed Nov 19, 2014 11:24 am

So out of curiosity how much would this wheelset be worth then with an out of spec powertap. Considering it will cost $200 to recalibrate the powertap.

http://tinypic.com/r/64qjyq/8" onclick="window.open(this.href);return false;

http://tinypic.com/r/rh2u88/8" onclick="window.open(this.href);return false;

http://tinypic.com/r/33tmseh/8" onclick="window.open(this.href);return false;
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toolonglegs
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Re: 2nd Hand Powertap Pro torque offset numbers

Postby toolonglegs » Wed Nov 19, 2014 3:30 pm

Ok didn't realize it was a pair of wheels. Makes the price a bit better for sure. But... You still have a worthless hub, IF it can be recalibrated and IF it doesn't drift again then, well then you have an ok set of race wheels ( unless you are going to train on tubulars ) ... Power meters are handy in races to view the data afterwards, but they are made for training ( and TT's )

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Re: 2nd Hand Powertap Pro torque offset numbers

Postby GasCyclist » Wed Nov 19, 2014 4:59 pm

Yeah this is my predicament... What to do....... Whether to buy and take the punt it can be calibrated and if so how much to pay.
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GasCyclist
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Re: 2nd Hand Powertap Pro torque offset numbers

Postby GasCyclist » Mon Nov 24, 2014 9:42 am

Am now looking at getting a new G3 but have been reading reliability issues. Like going out of spec after only a few rides

What are your experiences with the G3 Powertap?
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toolonglegs
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Re: 2nd Hand Powertap Pro torque offset numbers

Postby toolonglegs » Mon Nov 24, 2014 4:44 pm

My G3 has been great, my first SL+ was a shocker, 2nd one is still going sting after 5 years ( although it's not me that rides it anymore )

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Re: 2nd Hand Powertap Pro torque offset numbers

Postby GasCyclist » Mon Nov 24, 2014 11:05 pm

Cool thanks :) sounds good.
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Re: 2nd Hand Powertap Pro torque offset numbers

Postby nickobec » Thu Nov 27, 2014 12:44 am

My 2 year old G3 (which had problem with the power cap which was replaced under warranty in US as bought in US via ebay), is been perfect since then, calibrate three times in yesterday 512, 513, 512

My trusty 4.5 year old elite+ on my 3kg training wheels does not calibrate with my Garmin only gives it ID. But the numbers are very close to G3.

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