EAO wrote:Louis,
Your research on this build is most impressive! Stunning attention to detail, how beautiful!
Regards,
Eric.
Thank you Eric, as a builder, the research of available references, the search for parts and the scratch building of others for an accurate model is the biggest component of my passion for this hobby. Every build is an opportunity to learn about the vehicle.
This post is for the rollers and tracks
The Hummel late production is equipped with all metal return rollers. The mount are also positioned very differently than a Panzer IV. Notice the light slope of the track from the top of the sprocket all the way to the top of the idler. Also notice the armored box in front of the side air intakes, something rarely seen in reference pictures.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
These are the parts assembled for the return rollers. There are Mato late Panzer IV all metal rollers and Asiatam metal mounts, nuts and bolts.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
As the roller position need to be calculated and might require fine tuning on the spot, i create self contained units where the nut is inside the mount. I cut and filed away all the positioning pins. The nuts were filed as a cone and positioned at the bottom mostly inside the mount with some glue, bolts were cut and final sanding was done. On the hull itself, i drilled a hole just a bit larger than the size of the nuts about 1.5mm deep for the last portion of the bold, and also to give a good anchor for the glue.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
These are the superb and relatively cheap Mato MT011T panzer IV metal tracks (black pre-painted), purchased from eBay China for about $55. Notice the great level of details compared to Heng Long plastic tracks. They come with track pins with heads that allow for easy manipulation. Whoever has tried to remove track pins that are fully embedded inside a metal track link know what i am talking about. I do not think i will ever buy another set of Panzer IV tracks than these.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
The roller units were installed with epoxy glue which allow last minute positioning (up, down...) to align them all with sagging of the tracks. It is difficult to exactly pre-position them with pre-drilled holes. Despite all my attempts to pre-calculate the exact position with markers, most needed to be pushed up or down by 1mm before the epoxy glue set.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
Close up of the metal return rollers.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
The road wheel hubs were installed.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
Close up of the tracks

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
View of the positioning slope of the return rollers.

- RC 1/16 Sd.Kfz. 165 Hummel Late Production - Build
Next step, the front fenders.
Regards, Louis