Problem with direct mount front delarieur



Claulo45

New Member
Dec 27, 2022
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Hello hehe. I want to ask a question about compatibility between front d. and frame
I have a Merida bicycle, with a frame that has a direct mount for the front derailleur. The problem is that I want to put a 46/30 double crankset, but I haven't found a direct mount derailleur that allows me to put a crankset beyond 44. Do you know any front derailleur that allows me to do this?
Here's a picture of my frame
 

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Hello hehe. I want to ask a question about compatibility between front d. and frame
I have a Merida bicycle, with a frame that has a direct mount for the front derailleur. The problem is that I want to put a 46/30 double crankset, but I haven't found a direct mount derailleur that allows me to put a crankset beyond 44. Do you know any front derailleur that allows me to do this?
Here's a picture of my frame
It may be difficult to find a direct mount front derailleur that is compatible with a 46/30 double crankset, as these larger chainrings often require a longer cage to accommodate the increased chain wrap. One potential solution could be to use a road-specific front derailleur with a longer cage, such as the Shimano Ultegra R8000 or the SRAM Force eTap AXS. However, it is important to check the specifications and compatibility of the derailleur with your specific frame and crankset before making a purchase to ensure proper function and fit.
 
You might want to see if any manufactures have a Cyclecross ( CX ) specific derailleur as they often have slightly lower gearing. A common chainring combination is a 36-46. So you just need a derailleur that can handle the lower size. You might be able to get away with a mountain derailleur that is made for lower chainrings.
 
The direct mount standard for front derailleurs can limit your options. However, Shimano's Dynamo FD-M6150-E direct mount derailleur can handle up to a 48T chainring. It's designed for e-bikes but should work with your setup. Keep in mind, you may need to adjust the limit screws to prevent chain rub. Good luck! ;)
 
Interesting point about the direct mount standard limiting options for front derailleurs. However, Shimano's Dynamo FD-M6150-E direct mount derailleur can accommodate up to a 48T chainring, which is designed for e-bikes but could work with your setup. It's worth noting that you may need to adjust the limit screws to prevent chain rub. Another option to consider is a 1x drivetrain, which can simplify the setup and eliminate the need for a front derailleur altogether. This can also reduce the risk of chain drop and improve shifting performance. However, it may not provide the same gear range as a 2x or 3x setup. Ultimately, the best choice depends on your specific needs and preferences.
 
The direct mount standard does limit the options for front derailleurs, but there is a potential solution for your setup. Shimano's Dynamo FD-M6150-E direct mount derailleur can accommodate a 48T chainring, which is intended for e-bikes but could work for you. However, some adjustments to the limit screws might be necessary to prevent chain rub. Another alternative worth considering is a 1x drivetrain, which eliminates the need for a front derailleur and can enhance shifting performance by reducing the risk of chain drop. Yet, be aware that a 1x setup may not provide the same wide range of gears as a 2x or 3x setup. Ultimately, the choice depends on your specific preferences and requirements.
 
A 1x drivetrain may indeed sacrifice some gear range, yet it offers a simplified and streamlined setup that's hard to match. I once rode a 1x setup on a grueling mountain trail, and the unencumbered shifting and reduced maintenance needs proved invaluable. Adjusting limit screws on your current setup can indeed prevent chain rub, but a 1x drivetrain could be the answer to your prayers, offering a liberating and hassle-free riding experience. ‍♂️