Txhawm rau tsim qhov" qhov rooj" system, yuav tsum muaj cov ntu hauv qab no los teeb:
Rooj vag phaj, 2 tus tuav dawb (txuas), dej txhaws, ib qho ntawm cov yas txuas dawb (hollow grooves) yog snapped mus txog ib nrab ntawm cov fiberglass luv tshaj plaws, thiab cov txuas dawb yog cap-puab tus nias ntawm ib kawg ntawm fiberglass pas nrig.
Coj lwm tus pas nrig fiberglass los txhim kho cov pedals thiab muab tso rau lub kaus mom dawb.
