Mike hall used dynamo on his tour divide record.
He didn't use dynamo on his trans am record.
What would be the differentiating factor to use or not to use dynamo?
My guess is that trans am route has more service stations you can charge your batteries?
He says he's not using dynamo in a vid, but I think he might have changed his mind before actual run..
If you look closely at the front hub, it is not thick.. dynamo hub seems to be thicker.. (http://bikepacker.com/mike-hall/)