My Throttle lever even after I have kept it say 4 notches down...when I drive it keeps pulling down couple of more notches and does not remain stationary at the position. Wonder why this is happening? Never use to happen before. Any advices?
Maybe the resistance is getting looser and gravity and bumps are dropping it- try one of the wooden blocks that you clamp to the steering column to tighten up the rods.
Where exactly should I clamp the wooden blocks? Any pic would be of great help.
Sid your profile doesn't say what year but if it has the stamped steel throttle and spark quadrant are the notches worn smooth? if they don't click when you move either of the levers it may be time to look for a better quadrant. If the throttle / spark quadrant is good how about the springs on the throttle and spark rods that keep tension on the levers?
Mine is a 1915 Roadster
I think this is what James was referring to
The wooden clamp accessory that help worn quadrants to hold the throttle and spark rods tighter can be made easily at home to avoid costly shipping from USA.
It'sp mounted on the steering column in the engine compartment. The hole for the steering shaft is oversized, while the holes for the rods are made just right to be able to tighten as needed.
That looks like a good accessory. If the spring is not exerting enough pressure this can happen. I adjusted mine a little by bending the throttle lever forward a bit. I could move mine past the stop on the quadrant to do this. I'm not sure all will do that.
Regardless, be careful not to weaken the rod.
Does one need to remove the Steering Column to fit this? Any idea on how else to fit this?
Sid, the block is split. Undo the wing nuts and place both halves on the column and install wing nuts. Tighten till the throttle rod has some tension on it
Check your timer. An incorrectly made front cam bearing and /or some aftermarket gears can cause the contactor to be too far forward. If you run a “new day” timer, the brush housing may be dragging on the inside of the cap.
I'm using one of the wood blocks and it works pretty good.
I really need to make up one of those blocks.
This older link posted some easy 'fixes'.
One fix is to use a wrench and bend up the quadrant a bit to get more tension.
May have worn down surface on the rods as they wear against the quadrant, or worn ridges on the quadrant face that lets the rod slip.
Or may have missing pin that holds the rod springs tight against the steering column, the springs are what control the tension to hold the throttle and spark levers against the quadrant. Or the springs are now too weak. That will require a complete restoration of the steering column pulled out of the T.
Here is a later spring rivet pulled away, showing the pin.
But the easy fix by bending up the quadrant will act to tighten the springs, might be the best start.
I use a small plastic tube on the ignition timing and throttle arms. It keeps it from moving and eliminates further wear on the quadrant.