Gearbox cable linkages

[ianc1200]

Is there a website anywhere (I've tried and cannot find) describing the elements/how they go together, of the rods at the end of the gear cable as it goes onto the gearbox?

I have Hurth 800 A2 and the linkage was knocked/fell apart during the engine service. Looks as though the inner threaded rod has previously been damaged, and only had two threads to screw in, the engineer is going to "tap and die" (if thats correct terminology) more thread, but I wonder whether should be longer, and also thinking it would be good to inverstigate the port engine's linkage too. But as everything currently open & accessible, whether simple replacement of the whole lot would be a better option.

Looking for something which gives me a broad picture as I am a complete novice at these linkages.

Would it be a simple measure length & diameter of cable and get new, or are the ends different depending on throttles (old style Morse in this case) and the gearbox connection?

 

[scottie]

Photo please it will save you many strokes

 

[ianc1200]

Thanks for the reply. I wasn't asking for specific help re this problem, more trying to understand the principles.

However here's the SB gearbox end without the errant rod (which the engineer has to rethread)



And the port one complete with a bit of a kink in the connection, so suspect not much thread also



If renewing, do you buy the correct length with the connections either end already on, or get an oversized cable and piut the connections on yourself?

 

[Tranona]

This is how they come asap-supplies.com/products/ultraflex-c8-33c-type-control-cable-10-9m-36ft-4-c8-36 and the fitting that is attached to the lever is a separate item. The fixed point for the outer cable normally goes in a clamp on a bracket attached to the engine at a fixed point from the lever so that the screw end on the inner cable meets up with the fitting on the lever with room for fine adjustment. Yours does not seem to be a standard arrangement as there is an extension to the inner to compensate for the fixed outer cable clamp being further away from normal.

 

[DAKA]

Agreeing with Tranona as well as noticing that it doesn't currently align which is the most likely cause of the bend and even if you replace with a new one the same will happen .
Someone has twisted the gear lever so that the cable sits flush but that doesn't help at all with the push/pull angle.

The fixed end needs to be on a bracket where the flexible black pipe currently sits .
I would expect there are two pre tapped bolt holes in the straight bit shown on the bottom photo just above the flexible black pipe , that is where you need to re site the cable fixing.


two holes in similar gearbox here https://bpi.ebasicpower.com/mm5/graphics/00000001/ZF45A_thumb.png

 

[ianc1200]

Looking at the ASAP Supplies details, no dimensions are given & I can't find them anywhere else. Their specifications say the "rod" has a diameter of 8mm - but no indication which bit this is. My cables are 5mm for the inner rod, 6.5mm for the outer rod (that the inner one goes in) and the plastic sheathing is 9mm. I could always phone and ask I suppose.

edit to say the thread is given as 10 - 32 UFN which when I look up is 4.86mm, so very close to my digital micrometer reading of 5mm.