Hi all, I have and use both the Pro One Penta97 16x19 and the 18x20. Here are some observations, both random and also responding to points / questions raised by others on this thread.
- The Pro One Penta97 18x20 is actually a 99 sq. in. head racquet. Donnay has confirmed this for me directly, and it's self-evident by aligning the two racquets.
- The Pro One Penta 16x19 markings for where to tie off crosses are totally wrong. In fact, it's worse than that. The markings for main tie-offs are right, but they're the only two large grommet holes at the top of the frame for mains. The other two large grommet holes at the top are for cross strings, which means that you have to tie off your starting cross string to another cross. To work around this problem, I drilled a larger hole through the frame myself, then cut off the Donnay hole sleeve and inserted a larger one from an old HEAD grommet that I had salvaged after the bumper guard wore out.
- one of my 16x19 frames has an incorrect string pattern printed on the frame. It notes the frame as an 18x20, even though it's a 16x19. My other 16x19 is printed correctly. I have no idea how something like this happens.
- The plastic used for the Donnay grommet caps is worse than industry standard. The sleeves split easily with string pressure, well before the bumper guard portion wears out, esp. on the 16x19 frames. I've cut out around 30% and replaced them with sleeves from TW.
- All of my frames came with lead tape at 12 o'clock under the bumper guard, presumably to bring them up to spec. In some cases, the lead tape wasn't even centered. One frame also came with lead tape at the top of the grip. The two round plugs in the hairpin that can be seen in Subaruvich's post are also for adding weight. One was missing in one of my frames, presumably because it would have brought the frame in over spec. each plug weighs around 3.5 g.
- As noted by others, Donnay's weight quality control, even with the lead tape and hairpin plugs, is not near, say, Yonex's. All of my frames were more than 5g different in weight, with different balance points.
- It is possible to use HEAD grip palettes. I used 4 1/4" TK82 palettes to make my Donnays somewhere between a 4 3/8" and a 4 1/2" grip. A HEAD 4 3/8 Butt cap fits over the assembly. Yes, there's a gap between the two palette halves, but under a grip (I use leather, but that shouldn't matter) and an overgrip, you can't tell. Note that the HEAD palettes + caps are around 8 g heaver than the Donnay palettes + caps. The Donnay Palettes are of a different, more porous foam than the HEAD ones. They're more delicate, but they're also not attached to the hairpin with a strong double sided tape, so they came right off without having to heat them and pry them off, as was the case with the HEAD palettes.
- the stock Donnay grips are also lighter than what I've seen from other manufacturers. I replaced them with leather anyway. I then took out the hairpin plugs to make up for the additional weight
- The string spacing for the 16x19s is more open than the 16x19 of the HEAD radicals from the Graphene onwards. The string spacing of the Donnay 18x20 is closer to that of the HEAD Radical near the sweetspot, and you can get plenty of spin production, esp. if you string low. Donnay advertises the 18x20 as a frame for flatter, more traditional games, but I find it works perfectly well for a more modern aggressive baseline style. The 16x19 seems to be a little more string sensitive in that the launch angle is a little more unpredictable and needs to be tamed by string choice.
- Donnay says to string at 45 lbs ±10 lbs, or 35-55 lbs, which is an incredibly large range. HEAD, by comparison, lists 48-57 lbs for the Radicals and Prestiges. My preference for full poly string jobs with the Donnay frames is, depending on the string stiffness, low to mid 40s for the 16x19 and high 30s to low 40s for the 18x20 frames. By way of comparison, I preferred high 40s to low 50s for the HEAD frames.
- One of my 18x20 frames had the hoop crack right at 6 o'clock for no apparent reason. Fortunately, Donnay will replace it.
- Donnay's customer service has been good. You can call them, email them, etc. and they'll respond. (Actually, I've only ever corresponded with Howie Matthews, so I'm not sure there is anyone else there). I haven't had any issues at all with business practices - to the contrary, they've been up front, honest, and direct in all cases. I actually prefer dealing with small companies like them in spite of the obvious advantages that a larger firm will have in terms of consistency and standards, but that's neither here nor there.
- In spite of all the quirks and weirdness, the frames play really well and feel great. The chrome paint job looks fantastic, and that also matters to me as a designer.