Anyone know of a push/pull Teleflex type cable with 300mm of ‘travel’?

[fredrussell]

All the engine control type cables I’ve googled seem to have a shorter operating range than the 300mm or so I require for latest boat project. Anyone know of another application where cables such as this are used to widen my google scope?

 

[billskip]

If it doesn't have to be teleflex..try Bowden cables , I think they are made to measure..

 

[Dellquay13]

Teleflex steering cables have that much travel, and are designed for marine use, but they are massively heavy duty and thick

 

[Boater Sam]

All the engine control type cables I’ve googled seem to have a shorter operating range than the 300mm or so I require for latest boat project. Anyone know of another application where cables such as this are used to widen my google scope?

A lever and pivot to increase the travel? Where do you get a control lever with that much travel? And what throttle/pump needs such a long travel?

 

[Refueler]

300mm !! That's ~12 inches .... more than many steering cables do let alone engine controls.


I am very interested as to what control lever mechanism and what is the item being controlled that needs such travel ?

 

[fredrussell]

I’m trying - just for want of something to do if I’m honest - to mount a Raymarine linear drive (which I picked up cheap) below decks on my tiller steered (no quadrant) boat. Current plan being to install drive in cockpit locker and connect it to tiller via a teleflex/bowden cable. The travel on drive is 300mm so that’s the range of operation I require of cable.

 

[Roberto]

Current plan being to install drive in cockpit locker and connect it to tiller via a teleflex/bowden cable.

I am fiddling with the same type of idea, use an ST1000/TP10 to remotely swing the wind steering aerial. The electric pilot can be attached directly to the swinging arm, but then it's all very exposed and not easy to engage/disengage.
The required push/pull force is minimal, so I am toying with bicycle brake cables and fittings from opposite sides to make it pull/pull; not found Paradise yet

 

[Refueler]

OK .. understood ... interesting.

 

[LittleSister]

A lever and pivot to increase the travel? . . .

Or decrease it.

 

[Refueler]

Could an 'endless loop' cable do the job ?

 

[fredrussell]

Could an 'endless loop' cable do the job ?

This sounds interesting. A single push/pull cable would need to be pretty chunky so as not to bend/flex when pushing tiller hard over. With two cables - one each side of tiller and both connected to linear drive ram from opposing directions - cables could be thinner as force per cable would be halved, with one cable pulling and one cable pushing.

 

[rogerthebodger]

Could an 'endless loop' cable do the job ?

Or even a chain drive but you also may need limit switches to control the extent of the movement

https://flic.kr/p/WYQyq2

I used a wind screen motor to operate the seacock on my boat using a chain or an extension rod or a turn buckle

 

[Refueler]

This sounds interesting. A single push/pull cable would need to be pretty chunky so as not to bend/flex when pushing tiller hard over. With two cables - one each side of tiller and both connected to linear drive ram from opposing directions - cables could be thinner as force per cable would be halved, with one cable pulling and one cable pushing.

My Soviet speedboat has a 4mm braided line wound 4x round the steering wheel shaft .... then the two ends via pulleys to transom ... where one goes to other side of boat round a pulley and return to the outboard .... other one round pulley and to outboard bracket .... basically wheel shaft rotates as you turn wheel .... pulls line to steer the boat. Simple and works surprisingly well .. with very little slop as the lines have small bottle screws to tension and adjust to centre. Its a Mariner 20hp - so a reasonable amount of force needed ..