You may have to register before you can post: click the register link above to proceed. So I have read that the LAMS power to weight ratio must be 150kw/tonne or less (and less than 660cc engine) which confuses me about how my bike is LAMS approved. I tend to agree after watching some of the stuff that kids can do on those bikes. Most bikes from the leading bike brands actually have very similar top recommend weights. The higher your power-to-weight ratio the faster you will go. Typical power-to-weight ratios. Power-to-weight ratio is an important component to success in cycling. My bike weighs 200kg and has been restricted to roughly 42kw. Im 210lb on a 28lb bike, so 238lb package. Example: Rider A weighs 76 kg and averaged 275 watts for a 20-minute climb, so his PWR for 20 minutes is 3.6 watts/kg. The closer the ratio is to zero, the more it feels like one is riding without the motorbike weight, just the rider's. Click to expand... Im currently mebbe 3 lbs heavier than last year and im finding i climb a little harder but ive got more power on the flat ., Been around 150 lbs most of the time . I have watched a friends son (about 5 now) learn to ride a bike on one, and it seems like a way better idea than training … Being short and light is probably a big giveaway, and the reason for this is because of what’s known as the “Strength to Weight Ratio”….or what I like to call the Power to Weight Ratio. Rider weight is far more important in the bigger picture because riders far outweigh their bikes. For the rider in you and I, it means that it’s easier to make a bike change directions, accelerate and decelerate. Ok so im going to school to become a horse trainer and im a on the larger side im about 325 no rude comments please. I … Hello all. ( I feel I go all out in my rides) I’m 43 kg but my PR for a 45 min ride is 262 and I often only reach 250 something. Thanks for posting this info. How to Calculate Your Power-to-Weight Ratio To determine your PWR, divide your body weight in pounds by 2.2 to convert it to kilograms, then divide the average power from a 20- … After seeing the standard height-weight BMI info available I was really wondering how someone of my height (6’4″) could be a healthy weight between 152 and 198 as advertised in a typical BMI table. A 180-pound rider on a 20-pound bike results in an overall weight of 200 pounds. But an even easier term to understand is “power-to-weight” ratio. In terms of rider weight, our results suggest that rider BMI, per se, is not a key factor: both the M and H riders were classified as overweight, based on BMI; however, rider M completed 11 out of 12 tests whereas rider H did not complete any of their six tests. One of the things they looked into was weight loss. Assuming similar weight (250f & 250), the additional horsepower of the two-stroke gives it a better number. The overall performance of any machine is directly affected by the power to weight ratio. While the maximum rider weight of individual models vary, it does help to have a starting point. Not if the rider's weight loss resulted in a loss of power and a reduced power/weight ratio, or if loss of weight adversely affected endurance for long rides. I wonder how close the Orbea will feel compared to the heavier Levo. If the bike is too light in relation to its unsprung weight, the masses pushing against the chassis through the springs will begin to upset chassis attitude and our comfort/control. That 150lb rider has a 53lb advantage on me and will likely blow my doors off on climbs. The better you can get this ratio, by adding hp or dropping weight, the better your bike will perform. Let say the GF (48 kg) can output 256 watt of power. Power-to-weight ratio is the formula used to determine your strength compared to your weight, and it’s the great equalizer when comparing riders of different sizes. (Interestingly enough, guidelines here allow for a higher rider to horse weight ratio, varying from 15-20 percent of horse weight. If your bike were to weigh 500lbs and had 100hp then you would have a 1:5 power to weight ratio or 1hp for every 5lbs. I seem to always get comments about climbing and how my body type is ideal for battling the hills on my bike. That means on bike A (16 kg) her power to weight ratio would be 4 w/kg while on bike B (8 kg) it'd be 4.57 w/kg. A 125 would pull you, A 250F has more bottom end torque for a beginner (less clutchwork also), it's easier to ride, but comes with a steeper price tag. The ideal motorbike to rider weight ratio is 0.07. The rider is 90 percent of that weight. Total Riding Weight (pounds): includes the rider and anything else added to the bike; e.g., lock, water bottles, etc. This would mean that an 80-kg recreational rider could sustain an average of 144W of power for one hour. Rear Weight Bias (percent): the standard formula is based on a 60:40, rear-to-front total weight distribution.A more accurate way would be to use a bathroom scale under the rear wheel and a 2x4 under the front wheel, to determine the true sprung weight at the rear wheel. This is why really good climbers are generally skinnier or smaller than average riders. Of course, there is a lot more to consider when choosing a bike. Decreasing bike weight can only go so far. To start viewing messages, select the forum that you want to visit from the selection below. I suspect there's also a minimum ideal sprung to unsprung weight ratio for the street. Will the Orbea feel almost as powerful being about 10 pounds lighter. If you’re a recreational cyclist then your 1-hour power-to-weight ratio is likely something like 1,8W/kg. Take 3 pounds off your bike, pedal at a constant rate of 200 watts, and you’ll get to the top of a 7 percent climb a whole 7.5 seconds ahead of the competition. Power to weight ratio as a light rider Hi all, I’m struggling to know if I am reaching a good output for my size and if I’m pushing hard enough. Randle is among a growing number of scientists suggesting that the human obesity problem can create a wide … My horse shooter is about 15.2 he is very stocky i mean hes got some muscle on him. To determine a rider’s PWR over a specific duration, you divide the rider’s weight in kilograms into the average power from the effort. On a heavy big stable bike it's not going to notice an extra 10-20kg of rider weight or a reduction of that weight and there's some theory to heavier bikes handling bumpy roads better and the suspension working more effectively too. I’ve been working to lose weight watching what I eat and pushing myself on rides. Maintaining your health while making sure you have the best power-to-weight ratio possible is not easy. Height isn't so much a factor as weight with full size bikes, bigger guys need more power to pull them around in a hurry. Read more about that here .) His or her 5-minute PWR would likely be 2,5W/kg, which equals to 200W sustained for 5 minutes. I'm a little surprised the manufacturers haven't agreed to some HP cap already. Think it also depends on the rider to bike weight ratio too. Has anyone tried to performed the calculations to compare the torque/power to weight ratio between the various ebikes? Rider to weight ratio? They compared losing 3 kilograms (6.6 pounds) of body weight with dropping 3 kilograms off the bike in novice, well-trained, and elite cyclists. Jump to Latest Follow 1 - 7 of 7 Posts. It’s a simple math by dividing the engine’s horsepower to the bike’s weight. Has anyone been able to do the math to compare the torque/power to weight ratio between the various ebikes? Insane power-to-weight ratio. I am torn between getting a 2021 Turbo Levo Comp or a 2021 Orbea Rise. As cycling has become increasingly data-driven, itʼs now more clear than ever that going fast on the bike isnʼt just about pushing hard on the pedals.To the detriment of those who enjoy a good donut or three, a golden ratio has emerged which is used to significantly improve performance over climbing and time trial efforts. (Not getting much lighter though, but at least I’m getting stronger.) I wanted to know if my weight is to much for him to carry keep in mind that im working on my weight. Improve Your Cycling Using the Power-to-Weight Ratio. As a heavy rider with a heavy bike I have prioritised the body element of the equation. The power to weight ratio measures how much power, in watts, a cyclist can produce at a certain weight, which is measured in kilograms 1.Athletes have access to these power numbers by using a power meter, which is mounted on the bike and transmits power numbers to a cyclist's handlebar-mounted computer. I am torn between getting a 2021 Turbo Levo Comp or a 2021 Orbea Rise. For example, a 50kg rider churning out just 150 watts has the same power-to-weight ratio as a 90kg rider churning out 270. Let’s … General Bike Talk; If this is your first visit, be sure to check out the FAQ by clicking the link above. Within reason, a lighter rider is better off on a heavier bike compared to a heavier rider on a lighter bike. Compare that to random guy (64 kg) who can produce 320 w. On bike A he'd have 4 w/kg and on bike B it's 4.44 w/kg. Power to Weight Ratio. I’ve long been aware of the relative unimportance of bike weight (lose 10% off the bike, and bike + rider is only ~1% lighter) but it’s nice to see the numbers for climbing. We spoke to one bike manufacture, Trek, to learn about their bike weight limits: Trek bikes have a 275 or 300 lb weight limit depending on the bike. OfirMX ... Strider bikes are cool, wish I'd had them when I was a kid. How To Improve Your Cycling Power To Weight Ratio If you want to improve your climbing in a bike there is one thing guaranteed to get you up the hills quicker. Here's a sample of some different rider & bike combination's and how changes to weight and power progressively change the Power to Weight Ratio. SV650 A stock Suzuki SV650 is roughly about 70 Rear Wheel Horsepower and 400 lbs wet weight (all fluids including a full tank of standard fuel). It is my understanding that the 80cc bikes are often considered to have one of the best ratios. It is a comparison of horsepower to weight. 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