Yamaha YDX Moro torque specs

 

Yamaha Moro YDX display

The Interface X on the PW-X3 motor equipped Yamaha Moro YDX is Bluetooth enabled and can connect to smartphone apps, GPS devices, or bike computers. However, the display itself is horrible, with just a series of LED lights to tell you the assist level and battery level (in only 25% increments). The location isn't great either right next to the stem.

Yamaha also makes the Display A which is a plug-and-play upgrade. While it doesn't have Bluetooth, it shows the speed, assist level, and battery level in 5% increments. It also combines the assist buttons with the display itself, so it's fewer wires and an altogether more compact design.

To replace it, remove the right side cable cover, and gently pull the wire out until you get to the connector. With a bit of finess the connector will come out through the cable port. At that point just disconnect the Interface X, and connect the Display A.

Single speeds and half links

Single speeds often use 8 or 9 speed chains because of the significantly higher quality and the lower weight. However, it can be challenging when a half link needs to be added to achieve the property chain length. Every 3/32 half link I tried, and I think I've tried them all, is slightly too wide to be used in a multispeed 3/32 chain.

To do it right you want two of these:

KMC Z610HX master link
https://kmcchain.us/products/z610hx-c-l

And one of these:

Gusset half link
https://www.universalcycles.com/shopping/product_details.php?id=22297

The KMC master links in the link above is nickel plated and very nicely made, unlike most BMX style master links. They're slightly wider than a normal 8/9 speed connector link, so they play nicely with the half link, and the slight added width isn't a problem with the narrower multispeed chains since the difference is so small. They'll also digest any half link out there while still working nicely with a multispeed chain. 

The Gusset half link is another quality product. The entire thing is nickel plated, unlike most half links. They also sell it already joined to a set of inner plates, the reason being they can peen the ends of the pin for extra strength. Also, unlike other half links, the Gusset uses the superior bushingless design.

You want to use the two KMC master links to join the Gusset half link into your chain. Make sure the flat side of the Gusset half link faces away from the teeth. 

You can still use a connector link, but it cannot connect to the half link as the connector link simply isn't wide enough. When I run a connector link and half link together, I'll usually install the half link on the opposite side of the chain.