I use this riser on my premier 18 bass drum and 20 " MIJ bass drums with danmar clip on spurs. It works great to center the beater.

I use a Mapex riser on my 18" bass drum. Costs only 20 bucks but ran into 2 issues.

First issue: Even though the riser is adjustable for the distance of the pedal from the bass drum which is a nice feature, I was not able to get my pedal quite as close to the head as without the riser. This is with a newer Pearl pedal and I have not tried a different pedal so it may not be an issue for others. I also like to have my pedal as close to the head as I can.

Second issue: Where the chain connects to edge of the footboard of the pedal was just barely touching the wood hoop of my bass drum so I used a wood file to shave the hoop slightly to not make contact. Luckily this is a cheap mapex kit and not a vintage kit but still I was still not excited about doing that. I could have positioned the pedal back a little but the pedal was already a little further from the head than I like.

http://mapexdrums.com/international/products/accessories/sound-control/ac909/

I have this on my 18" RC kick.

With the old DW5000 pedal I use on that kit, I had to S-bend the beater to keep the rod parallel with the head. Otherwise it has to be pressed much further to make contact with the had and has a strange feel that way.

I think I bent it forward about 3/4 inch but it was so long ago I could be wrong about the dimension.

On the RC kick I use the standard spurs all the way out and it works fine. Some kicks require longer spurs (or other solutions) as they don't go long enough and you end up "nose down" on the kick which is not cool to keep the beater shaft parallel to the head at contact.

EDIT> After reading above the chain is REALLY close for me too. But I was not inclined to file my black lacquered hoop... I did put a small piece of felt there and also under the clamps so it doesn't kill the hoop too badly.

Having used both, I prefer the Dixson Lift. Doesn't clamp to your hoop so you don't get wear marks, and it's faster to set up, too. Lighter, also.

As with all lifts, though, your beater will be further away from the head to avoid chain/strap scrapes against the hoop. I found getting used to the adjustment in feel to be worth it for the sound improvement, but YMMV.

Gene D'Amico makes a bass drum cradle for 16" to 22" drums. His stuff is always first rate.

http://www.damicodrums.com/new_cradle.htm

Gary,

That's the exact riser I use for my 18" Rogers Bassdrum..

Depending on the pedal you use..I duct tape the base area where my pedal Grips onto the riser .otherwise it loosens & slids back n forth..

As for height...yes, it's good & adjustable by about an inch..

I do find that I have to change my beater...because I now need alil more travel ..

Kelly.

I'm using one on my Breakbeats, it's about 1/2" taller than the stock Ludwig, which I need due to my putting the beater as high as possible My pedal is an older DW 5000 single-chain & I don't have any problems with hoop/chain interference.

The fix I've read about for the interference is to get some fender washers (any hardware store) & put them between the BD clamp & the lower part so that sticks out further.

I had some slippage on the pedal clamp, but I put skateboard tape on it (the riser) & it works well.

The main problem I have with the Gibraltar lift is that the set screws loosen up easily, I'm always reaching down to tighten them. The indentations look like they would take an Allen wrench, but they don't, I've tried both SAE & metric. The one time I used pliers to tighten them down the angle on it changed so much that the baseplate on my pedal was off the ground. I know Loc-tite makes a formula that I can put on the threads & it'll make them harder to turn but I haven't tried it yet.

Strange re the Allen head... why not just get metric bolts to replace what's there? Then you can have a hex head or whatever you want.

I'm pretty sure it's supposed to be metric, so metric thread. Probably M6 if I had to guess.

The problem is that the set screw has a hole tapped into the other end for the screws that hold the clamp on, not something you can pick up at Ace Hardware.

http://static.music123.com/derivates/18/001/229/528/DV016_Jpg_Large_446346_front.jpg

You can see the pads (I think it's an early model, they look different), they came loose on mine & they're not easy to tighten.