Thisupgrade kit allows you to pair 11 speed mechanical SRAM shifters with a 12 speed SRAM Eagle* derailleur and cassette. This is the neatest solution on the market to gaining all the performance advantages of a wide-range 112 drivetrain on a gravel, road or touring bike without the expense of electronic shifting.
As cyclists, we design the products we want on our bikes. The Ratio 12-Speed Upgrade Kit allows you to operate a SRAM Eagle* derailleur with your existing SRAM 11-speed shifters, gaining an unbeatable 500% or 520% range and 12 evenly spaced gears on your gravel, road or touring bike. For reference, a traditional 50/34 compact chainset with 11-28 cassette provides only 374% range.
All products we offer for sale on our website are Ratio Technology products unless stated otherwise. All third-party products, company names and logos remain the property of their respective holders and use of them does not imply any affiliation with or endorsement by them.
To reduce waste we will send orders of over 10 units as bagged kits with one set of instructions rather than individual kit boxes. You can find a PDF of the instructions on our website here . If you have ordered less than 10 kits but would also like to reduce the packaging of your bulk order or have any questions please email us at [email protected]. Equally if you would like the full packaging for orders of 10+ kits drop us a line too.
It works better than the stock 11 speed rival shifter. Put it with a X01 10-50 cassette and X01 rear derailure and works flawless. Installed this on my new Ibis Hakka MX love the new range of gears. Thank you So much for making this product for us gravel bike geeks!!
Highly recommended ! I was planning to build my own gravel bike from an aluminum frame with a large clearance for big tires (650x47mm). I ordered the kit and it arrived quickly in Switzerland. The assembly was quite simple (being an almost beginner in mechanics) thanks to the very well made videos ! The gearing is perfect and the 10-52 Eagle cassette allows me to climb almost everywhere. Great job!
So stoked!
The wizards @ratiotechnology made a affordable mullet 12-speed possible.The Installation was a piece of cake. Just follow the steps. The Parts are good quality!
It shifts smooth and works just fine. A superb Upgrade to my Bike.
Give the people what they want.
Mechanical 12-Speed Mullet Drivetrain.
Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and behavioral finance. Adam received his master's in economics from The New School for Social Research and his Ph.D. from the University of Wisconsin-Madison in sociology. He is a CFA charterholder as well as holding FINRA Series 7, 55 & 63 licenses. He currently researches and teaches economic sociology and the social studies of finance at the Hebrew University in Jerusalem.
If the forward P/E ratio is higher than the current P/E ratio, it indicates that analysts expect the company's earnings to decrease in the future. However, these estimates aren't always accurate and can be subject to revisions.
Forward P/E ratios tend to vary by sector due to differences in industry growth rates, risk profiles, and capital structures. The technology sector, for example, often has higher forward P/E ratios because investors anticipate rapid growth and significant future earnings in these industries. Sectors such as utilities often have lower forward P/E ratios since they're viewed as having slower growth potential.
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Despite its name, a ratio forward is more like an option than a forward. Where standard forwards always create a legal obligation to buy or sell, in a ratio forward the obligation only arises if a certain threshold is reached.
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Generally speaking, a lower P/E ratio is more attractive to investors because it means the company's stock is undervalued. However, it's important to analyze the reasons for a lower ratio and compare it against P/E ratios in similar companies. A low P/E ratio could be an indicator of a business model in decline. On the other hand, a high P/E ratio could mean that a company is spending a lot of money to grow its business and has high potential, making it a good choice for investors.
Since forward P/E relies on estimated future earnings, companies could miscalculate it, underestimating or overestimating earnings. External analysts could also provide different estimates, adding to the confusion.
On February 8, the forward 12-month P/E ratio for the S&P 500 was 20.3, which marked the seventh time in the past nine trading days in which the P/E ratio for the index was above 20.0. How does this 20.3 P/E ratio compare to historical averages? What is driving the recent increase in the P/E ratio?
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This is the kit you'll want for your Stargazer build to convert a set of 11 speed SRAM shifters into 12 speed shifters and your Eagle derailleur to the correct cable pull ratio. We use this same kit for our complete Stargazer builds, and if you're ordering a frame and fork you'll probably want to add this kit on.
This ratio is useful to estimate the total amount of training compute from the forward compute; something we are interested in the context of our study of Parameter, Compute and Data Trends in Machine Learning.
We separate the weight update from the individual layers since the update is done after aggregation, i.e. we first add all gradients coming from different batches and then multiply with the learning rate.
We have tried to correct them as much as possible. In particular, we eliminate some operations which we believe are double-counted, and we add the operations corresponding to multiplication by the learning rate which we believe are not counted in stochastic gradient descent.
We can see that the first layer (red) has the same flop count for forward and backward pass while the other layers (blue, green) have a ratio of 2:1. The final weight update (yellow) is 2x the number of parameters of the network.
As we can see, the number of FLOP for linear layers is 2x their number of parameters. For CNNs the number of FLOP is much higher than the number of parameters. This means that the final weight update is basically negligible for CNNs but relevant for linear networks.
Similar to the linear network, we can confirm that the backward-forward ratio for the first layer is 1:1 and that of all others 2:1. However, the number of FLOP in layers (red, blue, green) is much larger than for the weight update (yellow).
Gradients are aggregated before the weight update. Thus, the FLOP for weight updates stays the same for different batch sizes (yellow) while the FLOP for all other operations scales with the batch size (blue, green, red). As a consequence, larger batch sizes make the FLOP from weight updates negligibly small.
Depth, i.e. the number of layers only has an indirect influence. This stems from the fact that the first layer has a ratio of 1:1 while further layers have a ratio of 2:1. Thus, the true influence comes from FLOP in the first layer vs. every other layer.
There are interdependencies of batch size, type of layer and depth which we want to explore in the following. We compare the small CNN and the linear network that were already used before with a network we call OneNet (code in appendix). OneNet has only one input neuron and a larger second and third layer. Thus, the ratio between the first and other layers is very small and we can see that the theoretical maximum for the backward-forward ratio of 3:1 can be observed in practice.
Furthermore, we look at exponentially increasing batch sizes for all three architectures. In the case of linear networks, i.e. LinearNet and OneNet, the ratio decreases with increasing batch size since the influence of the weight update is reduced. In the case of the CNN, the FLOP count is completely dominated by layers and the weight update is negligible. This effect is so strong that no change can be observed in the figure.
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