I dont get why you want a low gear ratio for crankbaits can someone explain?

1.- Not all cranks react well to high speeds, they roll on one side and do not wobble ------> wasted cast and a missed opportunity.

2.- Long lipped cranks need more torque to dive at the right depth

3.- Try fishing with a high speed reel a long lipped crankbait for an extended period of time, after ten casts it feels like you are reeling in a bucket.

I dont get why you want a low gear ratio for crankbaits can someone explain?

Not everyone wants a low gear for crankbaits. Some would rather have a higher ratio and slow down the retrieve when necessary.

However, the reason that some people like them is that lower gear ratios have more cranking power. Therefore, it is physically easier to crank when you're using a bait that offers a lot of resistance, such as a deep-diving crankbait.

There's another one going titled "Crankin Reels (?)" that addresses, at least in part, your question.  I look at  it like this, the higher ratio reels (6._:1) are directed more toward speed.  Usually reels in this retreive ratio category bring in more inches of line per turn.  Lower ratio reels are more oriented toward power.  These can run the gamut of 5:1, thru a few 4's and a 3.8:1 that I have in a Curado.  Bigger-billed deeper running cranks exert a lot of resistance to being cranked in.  Therefore the need for more power.  Hopefully you can get the opportunity to try a couple of different ratio reels to see for yourself.  It's quite revealing when you experience it.  Then you will have to decide what feels good to you, and best addresses your needs.

Personally, I think my 3.8 is not the ticket and am considering having David make it a 5:1.

Ok thanks guys.