I do T Bar rows old school style, no machine or anything. My problem is that when I use 45's on the bar, the 45's hit my chest and I feel like I don't get a full contraction. But when I use 35's, I feel like the weight is distributed differently, and it becomes more awkward to keep solid form. Any suggestions on what I might be doing wrong??
The difference in distribution may stem from the fact that smaller plates require
more plates to get the equivalent total weight.
However, those extra "layers" distribute the weight farther from the fulcrum of the bar, and that will certainly make the movement harder.
Try doing preacher curls with a straight/extended wrist, and when you can't do any more reps, curl the wrist in, and you can probably squeak out a few more reps.
That's the difference mechanical advantage can make in lifting.
I’ve never been a fan of T-bar rows, but I tried them on & off years ago.
IIRC, Kamali had an article
(in maybe MuscleMag) some time in the late 90’s in which he described a one-arm variation he uses.
Upon trying these myself, I quickly discovered that, when done this way, you can increase the ROM by at least an inch or so due to a number of reasons.
First, done unilaterally, the working arm is brought back a bit more simply due to biomechanics.
IMO, this provides a more complete contraction than when the bar is pulled to the body's midline.
Secondly, the one-arm version only requires about half as much weight as the two-arm one, which means you can use smaller plates.
While this may adversely affect your execution using the standard technique, the one-arm version may not be as bad since you won’t have to stack as many plates on the bar.
You’ll also be stabilizing yourself with the non-working hand as you would performing standard, unilateral db rows.
Try it out next time and see if it’s any better.