Re: White Paper Discuss: Nothing But Dewalts
 

Thanks For the help guys.

Does anyone else have some more ideas?

Re: White Paper Discuss: Nothing But Dewalts
 

Hey my team is very interested in NBD. Last year we used the Andy Mark 2 speeds trannys for the drive train. They just didn't seem to be worth the weight and cost. My questions are:

• How reliable is "shifting on the fly"? Anyone have major failures?
• Is it unreliable because of servos not acting at the same time or just the characteristics of the NBD?
• IF it is the servos, would replacing them with pneumatics fix this? Seems to me like it would. anyone tried?
• Would using two CIMs to one Dewalt transmission be too much for the Dewalt? Is an extra CIM even worth it? (drivetrain)

(Pics are always helpful:) )

Thanx,
Grant

Re: White Paper Discuss: Nothing But Dewalts
 

To answer above, it was fairly reliable last year, with no major failures. The unreliable part was piano wire was very hard to work with and we ended up using a ball link. We decided not to shift to all 3, just using 2, as the servo did not have enough power alone. Pneumatics can be used, just may be harder to integrate. We used the extra CIM, and our friends, 1070, did not.
They had an effective time I think with the NBD setup, and so did we. Definitely hard to create an adapter mid-season without instructions to fit 2 CIMs into the NBD, but the BaneBot 2 CIM adapter helped. Mounting also was a difficulte problem to solve mid-season. Planning ahead can help reduce the stress if you guys go with 2CIMs into one DeWalt.

I have a question....

The newer model DC940 is now out, and its hard to find the model that the NBD was made for (DC980KA). Does anyone have the specs or a CAD of the new DeWalt drill tranny?

Re: White Paper Discuss: Nothing But Dewalts
 

Does anyone know of a place to find the DC980KA anymore?

Re: White Paper Discuss: Nothing But Dewalts
 

Richard,

If you're just looking for parts for a NDB transmission, go here: http://www.dewaltservicenet.com/

Re: White Paper Discuss: Nothing But Dewalts
 

Try checking with your local Dewalt service center. They have always had them in stock for us.

Re: White Paper Discuss: Nothing But Dewalts
 

We found its more expensive to use the older drill model. We are changing our tranny because of it. Buying the individual parts of the drill will cost more than buying a whole new model drill.

Re: White Paper Discuss: Nothing But Dewalts
 

Our Dewalt transmissions are making a weird binding sound when we shift into third gear and i was wondering if this is normal or not. We've taken apart the trans and the gears are fine. We are just worried about the sound. Is this a typical sound?

Re: White Paper Discuss: Nothing But Dewalts
 

We've use them for several years as our man drive, and have found them to be very smooth. Are:) you driving them with CIMs? Be certain the sun gear is not too deep into the planetary gears in the 1st stage. In addition, we have not had a need to use super low, as there is not much difference in ratio between 2nd and 3rd. Possibly, if you are using a servo to shift, it may not have enough throw, and you're not fully into 3rd gear. Did you remove the clutch pins from the output shaft? Are you still using the torque ring adjustment? :) :)

Re: White Paper Discuss: Nothing But Dewalts
 

The old Dewalt transmissions have become very expensive, has anyone had success using a newer model dewalt?

Re: White Paper Discuss: Nothing But Dewalts
 

Team RUSH has switch to the 36v Dewalt housing with great success. The procedures for modifying them are similar.

We don't have a white paper, sorry...but, you can sort of see them in this picture. They are substantially more rugged, featuring more drive pins inside the planetary assembly.

Re: White Paper Discuss: Nothing But Dewalts
 

We are trying to use the Fischer price assembly for the dewalt and we are having some problems. The paper is very vague in how it describes the modified pinion gear and we have a whole lot of questions

• What gear is this?
• Is it from the dewalt tranny?
• is it from the Fischer Price motor?
• how do we modify it?
• How do we attach it to the Fischer price? When we tried to take off the gear that came with a Fischer Price we practically destroyed it Fischer price.
• Can someone help us?

thank you in advance

Re: White Paper Discuss: Nothing But Dewalts
 

The modified pinion gear is a modified dewalt pinion gear. The mention is in the very first paragraph on page 17. It notes that the Sun1 (pinion) gear id the same gear as the Planet2 gear. This would be the planet gears of the second stage of the tranny. There's 4 of them and they're longer than the Planet1 gears.

Modified means bored out to a press fit on the FP shaft. He recommends a .125 (+0.0000, -0.0005) hole. This is a very tight press fit, which makes it a little tricky to not bend your FP shaft. I'd recommend measuring your FP shaft with some micrometers and going with a hole that's 0.0005 under your measured dimension.