How to get a better tremelo?

[Bob]

Full chord tremelo, chord being split between both hands.  A transcription so it's going for an orchestra sound.  Good strong end note.

Octave in the LH.  Chord in the RH -- But it's nice to the RH because it's 1 3 5.  It could be worse.

A little cramped in that it's written right in front of me for both hands.  I find it easier to be a little farther away or have one hand out away from the body a bit.  But this is right in front of the body.  If I move my body left or right that will put the other hand in an even more cramped position. 

My tremelo is moving fast enough.  I don't have enough control over it.

How do I take care of that?

I think practicing octaves may have slowed things down a bit.  I guess I'll have to up the tempo on how fast I'm quasi-tremeloing with octaves.  I think I might be a little muscle bound for tremeloing now.   

Any ideas?  I'm thinking the ultimate solution is to slowing work up the speed from rhythmic split octaves into a real tremelo.    Maybe work on relaxing my forearm muscles to ease things up a bit.

[aintgotnorhythm]

There's a 6 page long tremelo exercise at the end of Hanon, I know it helped me with my tremelo!

[vlh1992]

What helped with my tremelo was practicing with the metronome and working up to a faster pace. Also make sure that your muscles are relaxed enough. I had a problem with my forearm muscles getting tight and then I lost speed and eveness. If you keep the muscles relaxed it will help your tremelo stay even and consistent.