Clutch Liner replacement made easy

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Old 07-31-2017, 01:50 PM
  #26  
fyrstormer
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Yeeeah, I figured that much out. But what purpose does the liner serve? Other types of nitro RCs have clutch shoes that contact the clutch bell directly, with no liner between them. Why do helis have clutch bell liners?
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Old 10-25-2018, 08:13 PM
  #27  
so65imp3s3s
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Originally Posted by fyrstormer View Post
Yeeeah, I figured that much out. But what purpose does the liner serve? Other types of nitro RCs have clutch shoes that contact the clutch bell directly, with no liner between them. Why do helis have clutch bell liners?
Wow! This is an old thread!
Anyways; With 1/10-1/8 RC stuff (mostly),you have composite(hi-temp plastic/artificial asbestos/plain old silica sand) or aluminum clutch shoes being spun up against the inside of a steel(mostly) or hardened aluminum alloy clutch bell. This does two things: 1) It allows a sacrificial material(the shoes) to wear down without destroying the clutch bell itself, therefore only the shoes need replacing over time. And 2) It also allows the quick release of the shoes when you let off the throttle, allowing the vehicle to come to a stop without killing the engine.

Now,with nitro helis; The object of the game is spin the engine up to speed and maintain that speed by creating a positive centrifugal/friction force temporarily locking the clutch drum to the clutchbell with no slippage. Hence the lining of the clutchbell with the liner which is a softer/pliable version of the composite shoes mentioned above.

Please don't quote me on any of this,as I only am making an educated guess based on a lot of years of owning a bunch(7 so far)of used EK4 S-2's I've snagged off of eBay that use the drum/liner/bell setup this thread is pertaining to. Unfortunately,my liners are adhesive backed,are rare as hens teeth and are quite expensive if you do find them for sale. I probably should have just ponied up the $35 bucks plus shipping two years ago when some douchebags' dad or uncle died and he realized some of that RC stuff in the garage/storage unit was made of gold. Oh well, that's what they make OFNA Titans and HPI Savages for; So you have something to bash when your Thunder Tiger is busted! Nitro forever!!!
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