advice on purchasing a new entry level roadie?

I think that linear acceleration of the slightly greater weight of a triple is a greater concern than rotational acceleration, but not a big one. I think that simplicity, and better chain lines for your two main chainrings, are the better arguments for a double.

 

OK I've got to call bull on this one and what a whopper it is.

I just happen to have a tripple inner chainring lying around at the moment and the chainring along with the 5 securing bolts weigh 47 grams.

"Heap of weight", "Rotational inertia"!!!

Pull the other one will ya! Its got bells on it!!!

I've ridden with exactly the same set of cranks setup as a double or tripple and I couldn't notice one iota of difference. I probably don't use the granny chainring even once a month but when that one big hill comes I'd rather have the tripple and overtake all those macho's who wouldn't be seen dead with one.

Regards, Anthony

 

You can get a Felt F75 for less than 2K