Tuesday, 15 February 2011
Tachometer mounting
Took the clock completely out of its housing exposing the inner part holding the circuit and electromagnetic dial gauge. Thought if I could thin it down as much as possible then it could fit in the centre area. I used the old clock mount and cut the original 3 point fixings off and filed, sanded bare, then welded into position. The mounts were welded on in a L shape onto the front perimter frame...where the frame dips in a curve( see other picture back last post). Looks quite neat.......remember I'm trying not to spend much money at the moment so I'm looking at re-using as much as possible from the vfr......might as well as its not going back to being a road bike..I guess I can do the same to the temp gauge...wont need the fuel gauge.
Incidently If i could get my hands on a vfr750f-h wiring diagram it would be interesting to see how the older bike wired its Tachometer. The usual 3 wire tachos have the +,- and pulse from one coil. One coil sparks usually 1,4, and 2,3 needing only 2 coils as there is a dead spark when one piston is BDC. BUT here the vfr's unique firing order needs 4 separate coils so how did the old vfr's tacho work? May be it was the same as this one, 2 wires from the cdi box. Time to buy a haynes manual...funny while I write this I can here an owl in the distance...must be late.
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