CLASS RACER FORUM - View Single Post - How much to slip the clutch to not damage parts

Dwight Southerland · 09-07-2014, 08:55 AM

Chris -
This is all just my opinion based on my narrow little experience so take it with prejudice.

If you are asking in reference to the CC, you will find that the majority of the resources available do not have a lot of history with low hp-torque applications. That means that you will have to build your own knowledge base. Low hp heavy vehicles tend to break parts more than high hp vehicles. (Not enough power to control the clutch; higher gear ratios mean smaller pinions; etc. etc.) Here's some stuff to always consider:
1. The clutch cannot be the sole agent of slippage to get the vehicle moving. That's the reason they make tires engineered for stick applications.
2. Learn how to build you own pressure plates and assemble the tools necessary to blueprint them.
3. Disc material is a huge area of study. Unfortunately, our culture has all but eliminated asbestos from the mix, so it will be hard to find a good rag formula that will endure the heat of slippage. The metal and ceramic based materials are harder to make consistent in round-robin racing conditions.
4. Winning rounds is much more important than going fast so as a last resort you can campaign for a Dana 60 in the truck.

09-07-2014, 08:55 AM	#2
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 1,999 Likes: 64 Liked 772 Times in 192 Posts	Re: How much to slip the clutch to not damage parts Chris - This is all just my opinion based on my narrow little experience so take it with prejudice. If you are asking in reference to the CC, you will find that the majority of the resources available do not have a lot of history with low hp-torque applications. That means that you will have to build your own knowledge base. Low hp heavy vehicles tend to break parts more than high hp vehicles. (Not enough power to control the clutch; higher gear ratios mean smaller pinions; etc. etc.) Here's some stuff to always consider: 1. The clutch cannot be the sole agent of slippage to get the vehicle moving. That's the reason they make tires engineered for stick applications. 2. Learn how to build you own pressure plates and assemble the tools necessary to blueprint them. 3. Disc material is a huge area of study. Unfortunately, our culture has all but eliminated asbestos from the mix, so it will be hard to find a good rag formula that will endure the heat of slippage. The metal and ceramic based materials are harder to make consistent in round-robin racing conditions. 4. Winning rounds is much more important than going fast so as a last resort you can campaign for a Dana 60 in the truck.