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Eugene Rybakov
Eugene Rybakov

How to Download the Full Version of Olav Aaen's Clutch Tuning Handbook

How to Download the Full Version of Olav Aaen's Clutch Tuning Handbook

If you are looking for a comprehensive guide on how to tune your snowmobile's CVT transmission, you might be interested in Olav Aaen's Clutch Tuning Handbook. This book explains the function and variables of the V-belt transmission, and provides a testing procedure to match your transmission to your racer's requirements. It also covers the technical theory and details of tuning popular clutches.


However, finding a copy of this book can be challenging, as it was published in 1979 and is out of print. Fortunately, there are some online sources where you can download the full version of Olav Aaen's Clutch Tuning Handbook as a PDF file. Here are some of them:

  • Scribd: This is a digital library that offers access to millions of books, audiobooks, magazines, podcasts, and documents. You can download Olav Aaen's Clutch Tuning Handbook as a PDF file from Scribd by signing up for a free trial or paying a monthly subscription fee.

  • Scribd: This is another link to the same book on Scribd, but with a different title and description. You can use this link if the previous one does not work for you.

  • IDoc: This is a document sharing platform that allows you to upload and download various types of files. You can download Olav Aaen's Clutch Tuning Handbook as a PDF file from IDoc by clicking on the download button on the top right corner of the page.

Before you download any file from these sources, make sure you have a reliable antivirus software installed on your device to protect it from malware and viruses. Also, respect the copyright of the author and publisher and use the book for personal and educational purposes only.

Olav Aaen's Clutch Tuning Handbook is a valuable resource for anyone who wants to improve their snowmobile's performance and efficiency. By downloading the full version of this book, you can learn from one of the experts in the field and apply his knowledge and experience to your own racer.

Snowmobile Clutch Tuning Tips

Besides downloading Olav Aaen's Clutch Tuning Handbook, you can also improve your snowmobile's clutch performance by following some simple tips from experts and enthusiasts. Here are some of them:

  • Never spray any lubricant or cleaner on a clutch. The aluminum that clutch faces are manufactured from is a fairly porous metal and any type of chemical whether it be a lubricant or a cleaning liquid is going to be absorbed into the clutch faces to some degree. This will reduce the friction and grip of the belt and cause slippage and overheating[^3^]. Instead, use a dry cloth or emery cloth to wipe off any dirt or dust from the clutch surfaces.

  • To help the drive belt hook up, regularly scour the clutch sheaves with emery cloth in a straight pattern from the clutch hub to the edge; do this with light pressure. This removes belt residue, which is slippery and holds heat, and resurfaces the sheave. Itâs important to rinse the clutch with warm water because metal dust is abrasive and it will accelerate wear to rollers and bushings[^2^]. Clean the edges of the belt with a wire brush or emery cloth to remove glaze. New belts usually have slippery residue from the mold used in manufacturing, so this needs to be removed for the best performance. Clean the edge with acetone, too[^1^].

  • Keep the drive belt adjusted within specification. Proper belt deflection is imperative for good, efficient performance. Most secondary clutches have an external adjuster that affects the distance between the moveable and fixed sheaves, which sets the beltâs tension. Check your owner's manual or service manual for the recommended deflection measurement and adjustment procedure[^2^]. Belts become conditioned, so reinstall it in the same direction for its full life cycle to help it last longer[^1^].

  • Make sure the clutches are aligned. Aligned clutches assure that the belt rolls straight and does not bind. A straight belt also allows for the most surface area for the belt to contact the clutch sheaves; more contact means more drive belt traction and efficiency. Check the belt-to-sheave clearance. The gap between the belt and primary clutchâs moveable sheave is crucial for a smooth engagement and long belt life. Measure this only with the engine turned off. The distance is adjusted by adding or removing shims inside the clutch and should only be done by a professional with proper tools and specifications[^2^].

  • In my opinion, the IDEAL way to approach clutching is to start with a straight angle helix, with the angle selected for backshifting characteristics, and the secondary spring tension as loose as possible while still preventing belt slippage. Then all engine RPM tuning should be done with the spring and weights in the primary[^1^]. However, if you want to experiment with different helix angles and springs, you can use Olav Aaen's Clutch Tuning Handbook as a reference guide.

By following these tips, you can optimize your snowmobile's clutch performance and enjoy a smoother and faster ride. Remember to always wear proper safety gear and follow the rules of the trail when riding your snowmobile. e0e6b7cb5c


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