New Ryobi 3-speed drill transmissions!
 

In response to this thread, I was looking around on the Internet today for spare ransmissions for a 12v 2-speed Ryobi drill.

As I was searching, whenever I saw something that immediately caught my attention. I came across a new 18-volt hammer drill from Ryobi that has a three speed shifting transmission. Yes, you heard that right, Dewalt is not the only company that manufactures 3-speed drills. The outside of the drill looks remarkably similar to the Dewalts, and if this drill is anything like other Ryobi tools, it is probably half the price of a Dewalt.

Product information: http://www.ryobitools.com/index.php/catalog/tool/p220/

Product manual: http://oneworld1.inetu.net/manuals/r...20_541_eng.pdf

Speeds: 370 rpm, 750 rpm, 2,200 rpm



I think you may actually be able to use this transmission just like one of the NBD transmissions, with the exception that the servo-shifting will have to be rotated 90°. But otherwise, if you take the handle off, you will have a nice spot to secure one of the huge shaft collars; and right behind this spot you have four bolt holes that run parallel to the output shaft that could be used to bolt the CIM motor plate to the transmission. :cool:

Re: New Ryobi 3-speed drill transmissions!
 

Looks good except one thing. Its a hammer drill. From my knowledge and use of hammer drills they are different from regular drills, when they get up to their stall torque instead of just stopping they have a hammer action that bangs the drill forward to help commonly through concrete and/or cement.

Do you have the ratios as oppposed to just the speed with a ryobi motor attached?

Re: New Ryobi 3-speed drill transmissions!
 

Hi Art,

Found a link that will take you to a web site that has a part listing for the Ryobi P220 drill. It appears to me that Ryobi only offers the drill motor/transmission assembly as a repair part. That will likely be fairly expensive, and you can't use the motor. I guess you might want to get a price, and disassemble to see how it is built. Dewalt's are pretty cheap compared to most planetary gear transmissions I have seen. I do like the apparent gear ratios available with the Ryobi. Ryobi's 3 seem more useful then the Dewalt's 3.
:)

Re: New Ryobi 3-speed drill transmissions!
 

Hi Art,

Found a Forum on Ryobi, and users are not happy with the the Ryobi. Uses bushings instead of ball bearings. It seems to be built similar to the Boesch trannys we used a few years ago. Found the price on the drill motor/tranny assembly as well. $92.66 is steep compared to Dewalt's needle/ball bearing output shaft. I would keep looking, but the Dewalt's will be hard to beat. :)

Link to forum: http://209.235.218.9/dc/dcboard.php?...g_id=806&page=

Re: New Ryobi 3-speed drill transmissions!
 

There should be a switch to lock out the hammer mechanism. Additionally, if you're going to the trouble of disassembling it, it should be simple to remove the offending parts entirely.

I noticed this as well; we found that the DeWalt XRP's 3^rd gear was hardly used, since 2^nd is so close, and since the XRP's shifter has a long travel.

I was wondering about this—the DeWalt's bearings (needle and ball) are a nice (but expensive) touch.

Re: New Ryobi 3-speed drill transmissions!
 

Thanks for the link. That's interesting that there isn't any ball bearing in it. Last night my father and I were taking apart an older 12v Ryobi cordless drill to take a look at the transmission inside, and we found out the hard way that there is ball bearings in the 12v (non-hammer) model. Then again, the drill we took apart was almost ten years old, which may have explained the better quality.

I love the Dewalts, and I know that they are of a way better quality than the Ryobis. I just found this drill, and thought I would post it here because there may be some applications (non drive-train) where you could use a cheaper transmission. I was just looking around for a cheap source of a second transmission identical to the one we now have when I found this. Once we get a second one, I'd like to try using them on a Vex robot drivetrain. When that Vex robot hits 8.8 feet/sec, you'll see some serious stuff!