Getting A Grip With Belts
The HEQ5 Pro is a fine mount. A fine mount indeed. It’s such a gateway Go-To tracking mount for astrophotographers. It came to me, highly recommended, second hand from a bloke in Birmingham. What a fun drive that was! I upgraded my EQ5 to a HEQ5 Pro SynScan Go-To Tracking Mount and boy was that a monumental day for me.
One issue is apparent with these mounts originally: graunchy gears.
The thing about spur gears (straight edge cut gears that interlink with one another) is that they’re noisy. It’s the same sort of gear in a car’s reverse, and we all know how loud reverse gears squeal.
But aside from the noise another, more insidious issue permits gear based systems.
You may have heard of this, it’s what your Periodic Error endevours to mitigate. Backlash is the tiniest of play inbetween gear teeth. Even with grease, over time these gears will wear themselves down and it seemed that was possibly the case with mine. My right ascension axis had loads of play between the idler gear and worm gear – you’ll see it in the video! It was crazy.
Clat. Clat. Clat.