I ride a almost stock Dahon Matrix Lockjaw and it's kinda heavy. I'd like to shave some weight off of it.
I'm an "agressive" commuter. I ride along with fast traffic. I carry it around folded and we have some nasty hills around, so weight is an issue. It's around 15kg right now.
Handlebars - Already swapped for temp alloy flat + crappy bar ends. Does carbon make a noticeable difference in comfort? Because the 30g less wouldn't be worth the $.
Fork - thinking about swapping them with a rigid carbon fork. The difference would be around 1kg, which is a LOT. But I never rode carbon so I don't have a clue of how harsh the ride is. What do you think about this one?
A fork like that would change the geometry a bit, making the front an inch or two lower. How does that affect handling and comfort?
Saddle and seatpost - Stock saddle is heavy and hurts my ass. Wouldn't mind riding a sporty saddle that's light and still hurts. Not changing the seatpost because of the pump, I need that.
Brakes - I think I could ride a v-brake on the rear wheel, while keeping the disc on the front one. Is it possible to use the rear caliper on a front wheel of another bike? What's the weight difference?
Tires - Those continental tires (1.6 65psi max actually, not those listed on the dahon website) are kinda heavy, 500g each. I could change those to kevlar kendas that weight around 220g and can be pumped up to 125 psi. Would the 125 psi + rigid fork be TOO uncomfortable?
What do you guys think I should do about it? Any other stuff worth replacing?