Mudguards

also not wanting to start a new thread, are 155mm cranks going to be too short. I scared myself the other day taking a corner too sharply and scraping my 170s on the ground at speed so want to go shorter and need new cranks. I've seen these http://www.alansbmx.com/product_info.php?cPath=38_92&products_id=1146 . anyone have any experience with this too?

Yeah i used them when i was racing at 6-12years old!!They are used by all the compaines producing 'minis' for junior racers, kind of up to 12yr olds.
Would no like to claim they are good or bad, just that they are mainly used on kids race bikes!
Plenty strong enough at that age, and i may have seen some riders using them at older age groups, so could be ok to use.
Might even have some still knocking around at home.