Well after the last disaster with the last CopterX I had – I decided to have another go- but this time build it slowly and with love
A kit has arrived from Ehirobo and so I got to roll up my sleeves and get building
I started by stripping and rebuilding the flybarless head – using locktite (provided in the kit!) and the tools they gave with the kit
Unfortunately the + screwdriver snapped its head off when trying to release the ball joints to swash (they must already be locktited!)
The star tool and hex drive have survived so far (I am not adding much tightness and all metal to metal parts are getting a thin smear of locktite!)
The rest of the head rebuild has gone smoothly and all bits are straight and seem to run true and free so I now turn my attentions to the frame
I have got the servo’s in and have built back the halves (again thin smear of locktite on all metal to metal joints and not enough torque to endanger the tools or screws or threads)
I placed the head and main shaft into the frame and opened the packet with the main gear in…
This is where I am at and now stuck…
The main gear is seemingly sitting too high and not meshing fully on the tail drive gear
I could make/buy some shims to try and bring the gear lower to get a better mesh…I did use the single brass shim provided in the kit…but its no where near enough
..but there’s also a little issue that the tail drive for the belt seems to also be a little high up – and It looks like it may bind the belt if I install it like this – the black cog also has a small split where it fits onto the shaft 🙁
I have messaged eHirobo to see if they can suggest anything…
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eHirobo have got back to me and new parts are on the way!
Top service!
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The replacement parts from eHirobo arrived today (new tail rotor drive) however the black cog was not good quality and has an eccentric wobble like it had been machined/ moulded off centre meaning the mesh was in danger of stripping teeth and binding at the same time…grrrr
I managed to get the cogs off the spindles and made one good one out of the pair (got it to spin true and have the tail belt at a height in the boom that didn’t rub/bind) seems there are slight quality control issues with these parts but nothing that can’t be fettled to a better fit with patience. I also managed to make some spacer shims to get the main gear to fully mesh with the tail drive and got everything thread locked in place…I did manage a short hover in the kitchen and all seems good…looking forward to trying it outside! I do need to add some glue to the belt drive cog since it has been slid on and off a few times!