Hi Dan,
The build itself wasn’t particulary cimplicated.
Just a little bit longer chain and cables.
For additional tension chain runs over special roller mid through.
It is necessary when motorcycle style kickstand is used.
There is also a mount for side kickstand but some people report that it breaks after a while.
Drivetrain is Shimano Deore XT 3x9 with SLX shifters.
Initially there was a problem with chain rubbing rear tire,
with 11s rear hub (46mm chainline) and Hollowtech II x3 cranks (50mm chainline) used.
To solve this I have changed to Shimano Deore FH-M525 (50mm chainline).
Generally this 26x2,4 tires (Maxxis Ardent) tires are the widest one
that can be mounted with this setup.
Brakes are mechanical TRP Spykes with XT levers.
I was affraid of lack of braking power and overbuilt them
with metallic pads and 2,3mm thick downhill rotors (180 front/203 rear).
Generally, I have an issue with those brakes.
In my oppinion their return spring is too weak
and it can’t overcome cable friction (especially rear one)
even with Jagwire Elite used.
It causes awful lever feel, probably will be changed to Avid BB7s.
Rest of parts:
Thorn Ripio 595 frame
Extracycle Leap conversion kit
Surly 420mm forks
FSA The Pig Pro DH headset
Downhill stem (IXS) and handlebars (Ergotec)
Ryde Andra 40 rims with 2,3mm spokes
Shimano 3D72 Dynamo hub and Busch Müller lights
SKS 27,5 plastic 65mm mudguards
Tubus Duo lowrider
Gusset 450 seatpost and SMP TRK gel saddle
Wooden feet support of my design
Cheers,
Przemysław