Too Risky to Ride?

the-smiling-buddha when I build bikes to start with I go a little ways, then a little ways further, I build up my speed very slowly

yeah it's good advice...

my first bike i built: i was so keen to get it together, which led me to bodge things, in turn costing me more money and headaches.

Edit: Remembered another thing - if you still can't sort it out, check you haven't got a stiff link where you broke the chain to put it on.