54,000 words! Hah! My first completed attempt weighed in at 34,000 (if I recall correctly). I remember choosing a slim paperback from my bookshelf and counting the words on several pages, taking an average and doing the math. Came to 70k (oddly, exactly the level being discussed here - though I suspect this was chance).
I went back to my story and thought of doubling it.
As it happened, when I began to study
why my story was so short I found it was a combination of factors, not just that the plot didn't justify anything longer.
1) Everything was 'wham, bam!', no-one every simply sat down and talked or planned anything - there was no 'down time' for the characters, no getting ready, eating, drinking, walking
to somewhere. Even in novels which are virtually all action (Cussler, mentioned in the 'Comfort Reading' thread being a good example) there are still plenty of quiet moments.
2) I was short on description. Reading the work as though I didn't know it I realised that many of my scenes were mere sketches and that to someone else they wouldn't provide a good visual image.
3) There was nothing 'off topic'. Everything I had written was only about the story then and there. There was no back story to the characters, no history of the locations, no 'talk' about the town or the countryside. Stephen King takes this to an extreme but I had none of it at all.
4) And, of course, the plot wasn't up to it
Personally I really like my reading matter long. I like to immerse myself in the world being created and, reading at the speed I do, anything less than 120k goes by too quickly. Unfortunately, I think that it must be very difficult to write 'long' (as opposed to the piece of cake it is to write normally
) while keeping pace and not 'rambling'. Peter F Hamilton's Night's Dawn trilogy is HUGE but seems to be rattling along the whole time. I'm not sure I could ever achieve that.
Jon