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My short experience with P515.
Sale via Ali from the EU shop went very well, delivery took 3-4 days more then expected. Crank looks very good, marginal heavier than the 105. Assembly was also no problem, I ordered it with the QED chainrings. Installation on my Lightcarbon LCR017 was not a big problem, I did however have to add a spacer on the drive side because otherwise there would have been play between the two arms. First 100k tour was also problem-free, recording in. Compared to the power meter pedals seems to be lower in the numbers, maybe still needs to be calibrated. What I also noticed is that the QED chainrings are louder than my 105 crank.
I hope this can help you a little.
Best regards.
View original forum comment in Chinertown-Forum:
Component Deals & Selection → Magene P515 PES Spider Powe...
Upgrade Your Shimano Cranks RIGHT NOW! - Magene PES P515
The reviewer discusses the Magene PES Crank P515 Power Meter extensively, highlighting its updates from the previous PES505 model. They mention its compatibility with Shimano standards, improved accuracy, lighter weight, longer battery life, and support for T47 and BB 386 bottom bracket standards. The reviewer compares its data accuracy against their indoor smart trainer and finds it to be reliable, especially during sustained efforts. They also note the importance of proper installation to avoid loose play issues.
AI-Summary
Pros
- Improved power accuracy (Β±1%) compared to previous version (Β±2%)
- Lighter weight (625g for the spindle)
- Longer battery life (330 hours)
- Fully supports T47 and BB 386 bottom bracket standards
- Uses Shimano standard chain rings (110 BCD)
- Available in various crank arm lengths (172.5, 170, down to 160 or 165)
- Competitive price point ($299 USD)
- Reliable data accuracy compared to smart trainer
- Includes clear installation instructions and spare parts (rubber washers)
Cons
- Some lag in data recording during high-torque efforts compared to smart trainer
- Previous version had compatibility issues with T47 bottom brackets (now fixed)
- Some users reported loose play over time if not installed properly
- Chain rings provided by Magene have inferior shift quality compared to Shimano chain rings
Key Points
- Updated version of PES505 power meter
- 24mm spindle compatible with Shimano standards
- 110 BCD chain ring standard
- Includes rubber washers for installation
- Requires proper torque during installation (10-12 Nm for chain ring bolts, 13 Nm for main bolt)
- Uses a preloader bolt (1-2 Nm) to remove initial play
- Data accuracy verified against indoor smart trainer
- Best performance during sustained efforts rather than sprints
Magene P515 : a nice powermeter, works well on my Wahoo Bolt and my Coros Pace. 250β¬ with coupons
View original forum comment in Chinertown-Forum:
Component Deals & Selection → Interesting Aliexpress find...
Magene P515 PES Spider Powermeter
The Magene PES Crank P515 Power Meter is an updated version of the P505 with minor improvements including slightly reduced weight (~25g), improved accuracy from 1.5% to 1%, T47 bottom bracket compatibility, and active temperature compensation. It maintains the same price point as its predecessor and uses a 24mm steel spindle with standard 110mm 4-bolt BCD. Users report good value for money but note compatibility issues with some BB386 frames and occasional shipping/delivery problems when ordering from AliExpress.
AI-Generated Forum Summary
Pros
- Good value for money with same price as previous P505 model
- Improved T47 bottom bracket compatibility compared to P505
- Active temperature compensation and improved accuracy (1% vs 1.5%)
- Slightly lighter weight (~25g reduction from P505)
- Works well with various chainring brands including Shimano, Stone, and BikinGreen
Cons
- Compatibility issues with some BB386 frames requiring spacer modifications
- Shipping delays and poor customer support from AliExpress sellers
- Occasional creaking issues that develop over time
- Bluetooth connectivity issues with some devices, better with ANT+
- Proprietary spider interface limits crank upgrade options
Key Points
- 24mm steel spindle
- 110mm 4-bolt BCD
- T47 bottom bracket compatible
- 1% accuracy
- Active temperature compensation
- Compatible with Shimano, SRAM, and third-party chainrings
Frequently Asked Questions
What are the main differences between P515 and P505?
The P515 has improved T47 compatibility, slightly reduced weight (~25g), improved accuracy from 1.5% to 1%, and active temperature compensation while maintaining the same price.
Is the P515 compatible with T47 bottom brackets?
Yes, the P515 is compatible with T47 bottom brackets including both 68mm and 86mm versions, though some users report needing spacers for perfect fit.
Can I use my existing Shimano chainrings with the P515?
Yes, the P515 uses standard 110mm 4-bolt BCD and is compatible with Shimano Ultegra, 105, and other compatible chainrings.
Where can I buy the P515 and what are delivery times?
Available on AliExpress, Magene's official website, and Amazon. Delivery times vary widely from 3-4 days to several weeks, with some users reporting significant delays from AliExpress sellers.
Is the P515 compatible with GRX groupsets?
Yes, with proper chainring selection and potential chainline adjustments using spacers. Some users successfully run P515 with GRX front derailleurs.
How do I calibrate the P515 and is it necessary before every ride?
Calibration can be done via the Magene app or headunit. While recommended for accuracy, many users only calibrate occasionally or use backpedaling to reset before rides.
I Bought a Cheap Power Meter to Get Faster⦠Big Mistake or Big Win?
The reviewer purchased the Magene PES P515 power meter crankset from AliExpress for Β£225 to improve their winter training. They were greatly impressed with the results and found no downsides. The reviewer found installation straightforward as a direct replacement for their Shimano Ultegra crankset. They tested the power meter's performance against Wahoo Powrlink dual-sided pedals and found the data to be accurate, consistent, and reliable, though it read slightly higher. The crank stiffness was comparable to Ultegra, and the shifting performance of the chainrings was very good, nearly matching Shimano's gold standard. The reviewer concludes it scores really well, especially considering its significantly lower price compared to competitors.
AI-Summary
Pros
- Cost just Β£225 (significantly cheaper than competitors)
- Greatly impressed with the results
- Found no downsides
- Very nicely presented
- Looks good
- Very high quality machining
- Easy to install (straight swap for Shimano)
- Stiffness is as good as Shimano Ultegra (no difference when sprinting or climbing)
- Shift performance of the chainrings is very good and the same as Shimano
- Power data is accurate, consistent, and reliable
- Tracks very closely with Wahoo pedals during testing
- Consistency of data is very good
- Provides accurate and repeatable power readings
Cons
- PES branding is quite bold and could be an issue for some people
- Not the best branding
- Initial concerns about the non-drive side crank arm having only one pinch bolt (vs. Shimano's two)
- Reads a bit higher than the Wahoo power meter pedals used for comparison
- Doesn't look terrible, but not amazing
Key Points
- Model: Magene PES P515 Power Meter
- Spider-based power meter
- Charge port
- ANT+ and Bluetooth compatible
- IPX7 waterproof
- Claimed runtime of 300 hours
- Crank arms are machined from aluminium with weight-saving channels
- Spindle is 24mm (Shimano compatible)
- Available in different crank arm lengths (reviewer chose 170mm)
- Comes with separate chainrings
- Chainrings have pins and a ramp profile for shifting
- Uses a single pinch bolt on the non-drive side (unlike Shimano's two)
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