Faint knocking - Rocklobster issue?!

Check the transfer box mounts and bolts.

Kirkynut

Does the noise sound almost like a steam engine 'chuffing' like a knock but not quite that clunky? if that makes any sense? our 6.1 box started making a similar noise, some of the bearings were ruined, and that's the closest way i can describe the noise, we thought it was the intermediate prop at first. Transfer box was built with new TG gears, had an oil change and had only done 3-4k miles so wasn't expecting anything in it to have gone wrong- but there we go!

Thanks guys!

Transfer box mounts and bolts all look fine to me and are brand new.

I doubt it would be the bearings in the Rocklobster transfer box as they have literally just been changed / tested and I have covered less than 50 miles on them! I could send you a video of the noise if you like - just to see if it sounds exactly like the noise you describe - PM me if you like.

Interesting how you mention the intermediate prop as the UJ on mine does have some play - I am swaying towards this being the issue. I have also been told it is common for the intermediate prop weight to foul on the gearbox linkage frame, but no sign of this.

I think the best thing I can do is to get a new intermediate prop?? - does anyone know where I can get a new one from? One that is the right length would be a good idea as I am currently running a 25mm spacer.

Is the rocklobster from Richard Wattam? He might be a good person to ask about the prop

I'd start then with the intermediate prop if the bearings ect are all new in the T-Box, The noise mine made was very specific and if it was doing it you'd see what i mean about it sounding like a 'chuffing' noise. Good luck getting it sorted!