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-   -   pic: DeWalt drive base (http://www.chiefdelphi.com/forums/showthread.php?t=58089)

dbell 16-09-2007 19:27

Re: pic: DeWalt drive base
 
Quote:

Originally Posted by AdamHeard (Post 641820)
If you can't keep that stage, it wouldn't be too much extra work to move each dewalt inward, and have a sprocket reduction to the outer wheel. Then keep the center wheel connected in the same fashion.

Keep refining this until it is 100% ready for production, it will save your team a lot of time.

It might save time.
This would be a possibility, but a significant change to my current design. But part of me wants to try using the extra stage. If it works it could be great. Using a chain reduction would a significant amount of weight and space.

Quote:

I'm not a big time drivetrain guy... but can a DeWalt transmission take the torque of two CIM motors? Perhaps you could combine their torque before going in to the transmission?
The DeWalts would almost certainly be strong enough. But it would give up these advantages of my current design:
-weight balance of CIMS
-if any chain were to break, only one wheel would lose power
-does not require an extra gearbox to gear the 2 cims together

Quote:

dbell - are you planning on keeping the clutches? If so, you should read this: http://www.chiefdelphi.com/media/papers/1680. They kept the clutch in and found that it bent after a couple of matches, causing them to service the transmission frequently. If you aren't going to keep them, how are you going to keep the first ring gear in place?
I am not planning on using the clutches. I'm not sure what you mean by "how are you going to keep the first ring gear in place?"

DB

newton418 18-09-2007 17:10

Re: pic: DeWalt drive base
 
Quote:

I am not planning on using the clutches. I'm not sure what you mean by "how are you going to keep the first ring gear in place?"

DB
I didn't spend time trying to figure out exactly how the clutch works, but from what I remember it seems to me like the first ring gear in the DeWalt transmissions are kept in place by the clutch. When too much torque is applied to the transmission, the clutch gives in, allowing the first ring gear to slip. If you plan on using the first gear, but you are going to remove the clutch, there is nothing stopping the first ring gear from spinning freely. Thus, you would need to secure the first ring gear in place.


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