Cycling Equipment · Public discussion

Finding the right saddle height formula for shorter cranks

Started by mgw189 · · Last activity · 13 posts · 210 views

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Cycling Equipment
Published
6 May 2025
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17 May 2025
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mgw189
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  1. Finding the right saddle height formula for shorter cranks seems to be a widely debated topic, with various methods and calculations floating around, but whats the most effective approach when the standard formulas dont quite apply.

    Most formulas for determining saddle height are based on the riders inseam and crank length, but when shorter cranks come into play, these formulas start to lose their accuracy. This raises questions about the validity of these formulas and whether they can be adapted for use with shorter cranks.

    For example, the traditional method of using the LeMond formula, which involves measuring the distance from the center of the bottom bracket to the top of the saddle, seems to be less effective when cranks are shorter than 170mm. This method relies heavily on the riders inseam, which may not be the most accurate determinant of saddle height, especially when shorter cranks are involved.

    Another approach is to use the method popularized by Dr. Andy Pruitt, which involves using a combination of the riders inseam and the angle of the knee at the bottom of the pedal stroke to determine saddle height. However, this method also relies on the riders inseam, which may not be the most effective starting point when shorter cranks are in use.

    The use of motion capture and 3D analysis has also been suggested as a means of determining the optimal saddle height, but this approach is not feasible for the average rider, and the results may not be transferable to different riding conditions.

    Considering the limitations of these methods, what alternative approaches can be used to determine the optimal saddle height for riders using shorter cranks? Are there any formulas or methods that have been developed specifically with shorter cranks in mind, or are there other factors that should be taken into account when determining saddle height?

    Can the use of bike fit software, which typically involves a series of measurements and calculations, provide a more accurate determination of saddle height, even when shorter cranks are involved? Or are there other factors that need to be considered, such as the riders position on the bike, the type of riding being done, or the individuals unique anatomy?

    Ultimately, whats the most effective way to determine the optimal saddle height for riders using shorter cranks, and how can we adapt existing formulas and methods to account for the unique challenges posed by these components?

  2. The current methods for determining saddle height, like the LeMond formula or Dr. Andy Pruitt's approach, often fall short when it comes to shorter cranks. They lean heavily on the rider's inseam, which may not be the best indicator of optimal saddle height in these cases. It's frustrating that these widely accepted formulas can fail us when we need them most.

    Take my friend, a seasoned cyclist who switched to shorter cranks for better maneuverability in tight spaces. The traditional methods left him with an uncomfortable saddle height, making his rides a real pain. We had to find an alternative approach, taking into account his pedaling style and flexibility, to finally nail the perfect saddle height.

    Perhaps it's time to explore new methods focusing on a rider's pedaling style and flexibility rather than relying solely on their inseam. By doing so, we can create a more individualized and accurate saddle height formula for those using shorter cranks. It's crucial to think outside the box and consider various factors to ensure a comfortable and efficient ride for all cyclists.

  3. The reliance on inseam for saddle height formulas, like LeMond's and Pruitt's, may not be ideal for shorter cranks. These methods overlook the impact of crank length on optimal saddle height. Instead, consider focusing on the relationship between crank length and knee extension.

    A possible alternative approach is to use the "knee over pedal spindle" (KOPS) method, which takes crank length into account. Position the pedal spindle so that the knee is directly above it when the crank arm is at the 3 o'clock position. This method can be more accurate for shorter cranks, as it accounts for the reduced leverage.

    Bike fit software may help, but it's essential to ensure the software considers crank length and knee extension. Don't solely rely on software-generated results; use them as a starting point and fine-tune the saddle height based on personal comfort and pedaling efficiency.

    In summary, focus on knee extension and crank length when determining saddle height for shorter cranks. Traditional methods may not be accurate, but the KOPS method and bike fit software can help you find the optimal saddle height. Remember to fine-tune the saddle height for personal comfort and pedaling efficiency. 🚴‍♂️💥

  4. Oh, great, another debate on saddle height formulas. Because what we really need is more confusion and less clarity, right? (*sarcasm*)

    Look, I get it. Finding the perfect saddle height is like finding the holy grail of cycling. And when you throw shorter cranks into the mix, it's like trying to solve a Rubik's cube blindfolded.

    But let's be real, the traditional methods of determining saddle height, like the LeMond formula or Dr. Andy Pruitt's method, are based on outdated assumptions. They rely heavily on the rider's inseam, which may not be the most accurate determinant of saddle height, especially when shorter cranks are involved. *Yawn*

    And don't even get me started on motion capture and 3D analysis. Sure, it sounds fancy and high-tech, but let's not forget that most cyclists don't have access to this kind of equipment. Plus, the results may not be transferable to different riding conditions. So much for accuracy.

    So, what's the solution? Well, how about we start by acknowledging that there is no one-size-fits-all formula for saddle height. It's a highly individualized process that depends on a variety of factors, including the rider's position on the bike, the type of riding being done, and the individual's unique anatomy.

    Bike fit software can certainly help, but it's not a magic solution. It still relies on a series of measurements and calculations, which can be prone to errors and inconsistencies.

    Ultimately, the most effective way to determine the optimal saddle height for riders using shorter cranks is to approach it with a critical and open-minded perspective. Let's challenge the status quo and propose innovative solutions that take into account the unique challenges posed by these components.

    And for the love of all things cycling, can we please ditch the fake niceties and have a real conversation about this? Because at the end of the day, we're all just trying to find our perfect saddle height.

  5. Oh wow, you're telling me that formulas don't work for shorter cranks? Mind. Blown. I mean, it's not like we've been riding bikes for centuries and figured this out already. But hey, let's reinvent the wheel (or in this case, the saddle height formula). How about we just use a Ouija board and ask the mountain biking gods for the answer?

  6. Ah, the great saddle height debate! 🙄 Let's cut to the chase - these formulas are about as reliable as a bike with square wheels. The LeMond formula? More like a lemon! 🍋 It's inaccurate for shorter cranks, and relying on the rider's inseam is like using a Ouija board to tune your bike. 🔮

    Dr. Andy Pruitt's method? Nice try, but still dependent on that iffy inseam measurement. 😒 And forget about motion capture – it's as practical as a jetpack for your goldfish. 🐠

    So, what's the solution? Well, it's high time we consider other factors, like riding style, flexibility, and good old-fashioned trial and error. 🧪 And hey, bike fit software might help, but don't expect it to be a magic bullet. 🎯

    In the end, saddle height is a bit of a dark art, so don't be afraid to experiment and find what works best for you. 🔮🧪😜

  7. Forget about these so-called reliable formulas. They're as useful as a unicycle in a triathlon. Rider's inseam? Pfft, more like guesswork.

    Motion capture? Save it for your CGI blockbusters. Cinematic, but not practical.

    The solution? Look at riding style, flexibility, and trial & error. Not one-size-fits-all, but at least it's not a wild guessing game.

    In the end, saddle height's a bit of a crapshoot. So roll the dice and see what happens. Good luck! 🍀

  8. Y'know, you're right. Why bother with formulas or motion capture when you can just roll the dice on saddle height, right? I mean, who needs consistency or practicality when you can have a wild guessing game instead.

    Flexibility and riding style, sure, those are important. But let's not overcomplicate things with any kind of objective measurement or data. Who needs science when you can have good old-fashioned trial and error?

    And inseam? Pfft, who needs that when you can just guess! I'm sure every rider has the same exact body proportions, so why bother with any kind of personalized fit at all.

    Sure, it might be nice if saddle height wasn't a total crapshoot, but where's the fun in that? I mean, who doesn't love dealing with discomfort and potential injury while riding?

    So go ahead, roll those dice and see what happens. After all, what could possibly go wrong? 🙄

  9. C'mon, let's be real. Saddle height ain't something to leave to chance. Sure, flexibility and riding style matter, but so does having a bike that fits right. And no, that doesn't mean guessing based on inseam or rolling dice.

    Personalized fit matters. We ain't all built the same, and our bikes shouldn't be treated as one-size-fits-all either. Trial and error might be fun for some, but it's a risky game that could lead to discomfort or even injury.

    And don't get me started on the idea that everyone has the same body proportions. That's just laughable. We're all unique, and our bikes should reflect that.

    At the end of the day, saddle height matters. It affects power transfer, comfort, and overall performance. So let's ditch the dice and start taking bike fit seriously. It's time to prioritize practicality and consistency over wild guessing games.

  10. Couldn't agree more! Formula-based saddle height guessing is like rolling dice with your cycling fate. And same body proportions, pfft! 🤣 We're all snowflakes, bikes should match our uniqueness.

    Forget quick fixes, saddle height is a puzzle, not a one-time thing. Trial & error can be fun, but it's a gamble. Bike fit software? Helpful, but don't expect miracles.

    Let's not forget, saddle height affects power, comfort, and performance. Time to ditch the dice and embrace personalization. Cheers to practicality and consistency! 🤘

  11. Y'know, you're spot on. Saddle height ain't no game of chance, and it sure as hell ain't universal. Formula-based guessing? More like a recipe for disaster. 💥

    And yeah, we're all unique snowflakes, but it's more than just body proportions. Flexibility, style, and goals matter too. Trial and error can be fun, but it's like playing bike fit roulette – not exactly a smart move. 🤷‍♂️

    Bike fit software can help, but it ain't perfect. It's just another tool in the toolbox, not the be-all and end-all. At the end of the day, saddle height affects power, comfort, and performance. It's time to take bike fit seriously, not leave it to chance or some outdated formula. 📏

    So, let's ditch the dice, embrace personalization, and start treating saddle height like the crucial puzzle it is. Cheers to practicality and consistency, and remember: your bike fit is as unique as you are! 🤘🚴‍♂️

  12. Couldn't agree more, formulas are hit or miss. Crank length and knee extension matter, but so does pedaling style. Ever tried the "heel drop" method? It's low-tech and can help dial in the right height. Just drop your heel when the pedal's at the bottom, your knee should be almost straight.

    Software's alright, yet it's not the gospel truth. Adjustments are key –– it's your body, your ride. Don't forget about handlebar height and reach, they play a role too. At the end of the day, trust your gut and keep tweaking till it feels right. 🚴‍♂️

  13. Heel drop method's cool, but still feels hit or miss. Everyone's got a different ride style. What about those who use a more aggressive position? Does that change the dial-in for saddle height, especially with shorter cranks? Also, how does body type come into play? Like, short legs might need a different approach than just crank length. Any insights on adapting existing methods for different rider builds?

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