How long of a bow should I get for my six year old son.  His little maddog recurve is getting too small for him.  I believe the one he has now is 18# at 21".  He doesn't really need a step up weight.  I want a longbow this time for some torsion stability so his dad don't twist it during stringing.

48" should be good.  Get a maddog pup longbow, that is what I have for my kids.

St.Joe River Bows make some knock out kids longbows!!

What would be the 18@21 equivalent for @24"?

Black Rhinos are great kids bows and Chuck is very good at matching the shooter to the bow.  They are a TG sponsor.   www.bows.net

Maddog

Around 48" length should be perfect. it will give him Lots of grow room

QuoteOriginally posted by Bear Heart:
What would be the 18@21 equivalent for @24"?

Depending on the bow. It could varies between 3-5lbs increase per inch. 18#@21 translates to roughly 27/33#@28.

My 6-year old has a 48" Maddog.  It's a great little bow.