Flat mount caliper clearance - S40

[dule0911]

- 2020 S40
- Hunt 30 carbon gravel disc front wheel https://www.huntbikewheels.cc/produ...el-disc-road-wheelset-1469g-30deep-27wide-999
- Shimano Ultegra BR-R8070 Hydraulic Flat Mount Disc Brake Caliper
- AS Solutions IS to Flat Mount adapter https://www.assolutions.ca/shop/adapters/flat-mount-adapter-for-is-frame/
- Shimano XT rotors



The question is, is this clearance big enough for the rear caliper? It's around 4mm to the spokes in the nearest point. It's the clearance to the caliper body, not the adjusting screw/plastic like on my Q45 and Sram BB5 brakes. On it (stock setup) the adjusting screw is a bit below 5mm away from the spokes.
Should I be concerned when the bike is loaded up/leaning in the corners/if one spoke brakes on the other side of the rim?

I think it should be ok, but I wanted to hear another opinion. Any thoughts @Robert Holler ?

Spoiler: the build

Can't wait for the bike to be finished. I've had little luck with parts/ordering, it's been too long and just when I thought I will ride it soon, the right shifter housing snapped in half. Oh well, another few weeks of waiting for a new one to arrive

 

[benphyr]

The rear BB5 on my Qx100 has approximately 3mm clearance to the nearest spokes.

 

[dule0911]

Ok, so I guess my setup should be fine then. Thanks!

 

[benphyr]

To look at it from a different perspective, how much deflection is there at the wheel rim to the fork? That maximum flex includes flex of rim, spokes (mostly), hub, axle, fork, tolerances in connection points. Let’s say you have 5 mm clearance tire/rim to your fork and that it doesn’t ever rub- then the total flex is less than 5mm. Down at the calliper it will be much less.

 

[Robert Holler]

- 2020 S40
- Hunt 30 carbon gravel disc front wheel https://www.huntbikewheels.cc/produ...el-disc-road-wheelset-1469g-30deep-27wide-999
- Shimano Ultegra BR-R8070 Hydraulic Flat Mount Disc Brake Caliper
- AS Solutions IS to Flat Mount adapter https://www.assolutions.ca/shop/adapters/flat-mount-adapter-for-is-frame/
- Shimano XT rotors

View attachment 10023 View attachment 10024 View attachment 10026 View attachment 10027

The question is, is this clearance big enough for the rear caliper? It's around 4mm to the spokes in the nearest point. It's the clearance to the caliper body, not the adjusting screw/plastic like on my Q45 and Sram BB5 brakes. On it (stock setup) the adjusting screw is a bit below 5mm away from the spokes.
Should I be concerned when the bike is loaded up/leaning in the corners/if one spoke brakes on the other side of the rim?

I think it should be ok, but I wanted to hear another opinion. Any thoughts @Robert Holler ?

Spoiler: the build

Can't wait for the bike to be finished. I've had little luck with parts/ordering, it's been too long and just when I thought I will ride it soon, the right shifter housing snapped in half. Oh well, another few weeks of waiting for a new one to arrive
View attachment 10028

That clearance should be fine. All of these new "standards" they are cutting clearances very close on a lot of things like this.

 

[dule0911]

Thanks guys, I will continue with this setup then. Damn right about the "standards"! I even got mad once I figured out that mtb and road bars don't have the same diameter (didn't ride road before). Why make it simple if we can complicate it all