750 Frame help

Vierkan had cut the frame tubes that run from horizontally from seatpan to the front downtubes, then discovered that the frame section at the front of seatpan section was weak and had porous welds. So Nguyễn the weldor stopped by to fix things up. He smoothed off the old welds and cleaned off the paint.


Then down to business.


All welded up.


We didn't care, but Nguyễn wanted things to look good.


Now to stiffen to the back end a bit. The seat support behind the shock mounts will be coming off soon too. A little pipe right here should do.




Tacked in place.


Nguyễn does the full weld to the tube.

750 wired and starter working

Okay, still working on a wiring. The key switch is place and wired with the 30 amp breaker behind it, mounted to a existing frame tab.

Ground wire to the frame, to green wire from the harness, and to yellow/red for the starter switch.


12V+ one to the starter relay, and one through the circuit breaker and to the key switch.

Here's the circuit breaker.

Starter button.

Back of the starter button. It takes a ground to low side of the starter relay. The key switch is the high side of the relay.

Seems to work. Vierkan does the honors.

Odds and ends on the Imp

We've been mostly picking at this, but making progress.

Shortened and cleaned up the spark plug wires.

Fresh battery.

Trying to figure out how to make the three phase alternator work with a regulator/rectifier from a late model Vulcan. This will let us mount one unit instead of the two piece regulator/rectifier that was stock on the 750.

hhhhmmm....

The wire colors from 1500 Vulcan manual don't match.

But the 800 manual shows the colors we have in hand.

So the three yellows from the 750 go to the three blacks.

A 750 green wire(ground) goes to the black/white.

750 black(key-on) goes to black/red.

The black/blue from our rectifier goes straight to the battery positive.

Time fix this over flowing carb.

Float needle and seat are okay, but not great.

The float tab is way different than the good carb. So we adjusted it to match. We didn't pull the carb and properly set the height, so hopefully we're close.

New throttle cable.

New throttle sleeve.

This broken screw is stuck. So we soaked in WD-40.

Bierkan want to swap the sprocket back to stock. I forget the teeth counts one these, I think 38 and 45 or so.

750 Oil lines revisited

Okay we didn't have the oil lines correct and that was causing out oil tank cap to blow off. Big thank to FXRSBIGBORE on the Shovelhead.us board. This is the correct oil line set-up.




We had the bottom crankcase vent going to the air and not connected to the tank.