currently i use mtb pedals on road bike,if i replace to the road pedals will i notice a difference in speed?
I used to ride with MTB clipless until I had a conversation with someone about the merits of road pedals or more importantly the shoes over MTB. When using MTB the shoes tend to be more flexible than road shoes. The extra stiffness in road shoes ensures all the power you produce is channelled through to the pedals. With MTB shoes you lose a bit of power due to the flex. At my/your level this is loss is almost immeasurable so has no real effect on how fast your go but over time its shows itself as fatigue. So on a longer ride you will start to tire quicker than you would with stiff road shoes/pedals.
This might be complete twaddle but it made a lot of sense to me when heard it and immediately made the change.
I used to use some MTB Shimano pedals with MTB Shimano shoes and since swapping to road shoes + pedals I noticed only 3 differences.
1. The road shoe is lighter and a little more comfortable for road use.
2. I used to get a 'hot area' with the MTB pedal/shoe as the pedal had a smaller surface area - i don't get it with road shoes/pedals as the road pedal has a bigger surface area.
3. Road shoes are harder to clip in than SPD's being one sided and they always feel a little looser.