LONG shot! Whitworth nuts and bolts

[BUSHWHACKER]

bit before my time old man.

Yeah, righto GRANDPA!

[surfenstein]

Yeah, righto GRANDPA!

[Apache]

what do you call a rivnut are they the same as a hank bush???

Dunno. Basically a captured nut with a wing with a rivet hole so you can rivet them to panels. Rivnuts in aviation parlance.

The actuator is so a vehicle brake pedal can be operated remotely in an EMC chamber - no electrical actuation permitted. We have an air system in the building.

[surfenstein]

Dunno. Basically a captured nut with a wing with a rivet hole so you can rivet them to panels. Rivnuts in aviation parlance.

The actuator is so a vehicle brake pedal can be operated remotely in an EMC chamber - no electrical actuation permitted. We have an air system in the building.

a hank bush will do the same job then, its a spacer with a threaded inner part and a lip on the outside you drill the hole push the hank bush into the hole and crimp it in place.i would make a frame bolt it to the floor fit the actuator to the frame and then place the end of the actuator arm over the brake pedal,if you mount it in the same position as your leg would be,when braking. then that has to be the optimum angle for greater leverage.a couple of control valves and fannys your aunt and bobs yer brother.

[Apache]

a hank bush will do the same job then, its a spacer with a threaded inner part and a lip on the outside you drill the hole push the hank bush into the hole and crimp it in place.i would make a frame bolt it to the floor fit the actuator to the frame and then place the end of the actuator arm over the brake pedal,if you mount it in the same position as your leg would be,when braking. then that has to be the optimum angle for greater leverage.a couple of control valves and fannys your aunt and bobs yer brother.

Cant modify the vehicle. No holes.

OK, a hank bush is basically a threaded insert then?

[MattF]

Cant modify the vehicle. No holes.

Working on the assumption of a brake cable from the pedal, can't you just put an oval cable tensioner on the brake cable? Quarter turn and pressure applied directly to the cable rather than the pedal itself?

[Apache]

Might have to work on several different vehicles. May not all work the same way. Not all commercial vehicles etc...

ALL have brake pedals though...

[surfenstein]

can you not design it so that the ram clamps around the steering column.???

[MattF]

Does either the clutch or accelerator need to be operated at the same time as the brake pedal, or will the brake pedal alone be depressed at that given moment?

[Woodzie]

Small high pressure airbag with a jig clamped to the acc and clutch pedals Working on the idea that you do not wish to opperate them or if you do 3 air bags

[Apache]

Just the brake pedal. Vehicle will not be moving.

[surfenstein]

ooooooh,does the brake pressure need to be a gradual pressure or just simply on and off.?/?

[MattF]

Woodzie's airbag idea is one consideration, or an adjustable clamp underneath either/both of the clutch/accelerator pedals to clamp between the pedal arm and floor. Like adjustable feet on a fridge. (That way, any difference in pressure couldn't be transferred to either of the other pedals, thereby causing movement in them). Small pneumatic or hydraulic ram then mounted to the framework, as it could obviously be mounted very close to the pedal surface, so minimum travel would be required.

[Woodzie]

A low pressure airbag woud give a slower operation

[MattF]

A low pressure airbag woud give a slower operation

Does that mean just let some air out of the bag first?