Gravel frame with 47mm tire clearence, space for 48t chainring and UDH hanger

[tgarne]

Is it really not possible to find a modern gravel frame which have a 47+mm tire clearence, UDH Hanger and also can run a Sram DUB wide crankset with a 48t chainring?

[kubackje]

Is it really not possible to find a modern gravel frame which have a 47+mm tire clearence, UDH Hanger and also can run a Sram DUB wide crankset with a 48t chainring?

Yes

[tgarne]

Yes

please enlighten me

[Serge_K]

I have one these: http://www.xmcarbonspeed.com/Productinfo.asp?f=1639
It says UDH, T47 means dub friendly, 50c clearance, and i run a 50-34 on it, i dont see why you wouldnt be able to run a 48T chainring? (you can ask Peter about that).

It's quite roady in feel, goes vroom vroom on the flat. Havent ridden much because my er9 on it broke and ive been riding my road bike, but from the few hundred kms i've used it, i only have good things to say. And i built it myself, went very smooth.

[frnchy]

My SPCycle G068 ticks all your boxes - I'm running a 2x setup with a 48t large ring on a road chainline, and there's 5-6 mm of clearance to the chainstay. 48t 1x on a WIDE chainline wouldn't be an issue.

[tgarne]

I have one these: http://www.xmcarbonspeed.com/Productinfo.asp?f=1639
It says UDH, T47 means dub friendly, 50c clearance, and i run a 50-34 on it, i dont see why you wouldnt be able to run a 48T chainring? (you can ask Peter about that).

It's quite roady in feel, goes vroom vroom on the flat. Havent ridden much because my er9 on it broke and ive been riding my road bike, but from the few hundred kms i've used it, i only have good things to say. And i built it myself, went very smooth.

Awesome. I am in contact with Peter. Seems like a good choice!

[tgarne]

My SPCycle G068 ticks all your boxes - I'm running a 2x setup with a 48t large ring on a road chainline, and there's 5-6 mm of clearance to the chainstay. 48t 1x on a WIDE chainline wouldn't be an issue.

It is on my short list. However SPCYCLE stated that it only takes 46T:

[frnchy]

It is on my short list. However SPCYCLE stated that it only takes 46T:

Interesting - that's got to be for a road chainline, and even then I'd say that's REALLY conservative. You got me curious though, and I just did some measuring:

-Distance from tire centerline (most convenient proxy for bike centerline) to the outside of the outer chainring: ~47.5 mm (+- 1 mm or so)
-Outer chainring thickness: ~2.7 mm

So the chainline of my outer ring is approximately 46 mm, which is 1.5 mm inboard of the WIDE 1x chainline, and at their closest point there's almost exactly 8 mm of room between the tip of the outer chainring's teeth and the chainstay. A 48t chainring would 100% fit (that's what my outer chainring is), and you could probably fit 52t or even a bit bigger before getting close to the chainstay, at least with a WIDE chainline.

Actually, in the G068 thread, landboard posted his build which, counting teeth, looks to use a 46t chainring with room for a large glob of mud right behind it. I don't know if this is a WIDE crank but even if so, it gives pretty definitive proof that 48t would fit.

[tgarne]

Interesting - that's got to be for a road chainline, and even then I'd say that's REALLY conservative. You got me curious though, and I just did some measuring:

-Distance from tire centerline (most convenient proxy for bike centerline) to the outside of the outer chainring: ~47.5 mm (+- 1 mm or so)
-Outer chainring thickness: ~2.7 mm

So the chainline of my outer ring is approximately 46 mm, which is 1.5 mm inboard of the WIDE 1x chainline, and at their closest point there's almost exactly 8 mm of room between the tip of the outer chainring's teeth and the chainstay. A 48t chainring would 100% fit (that's what my outer chainring is), and you could probably fit 52t or even a bit bigger before getting close to the chainstay, at least with a WIDE chainline.

Actually, in the G068 thread, landboard posted his build which, counting teeth, looks to use a 46t chainring with room for a large glob of mud right behind it. I don't know if this is a WIDE crank but even if so, it gives pretty definitive proof that 48t would fit.

Awesome work! Now I need to decide between Thise two frames..

[carbonazza]

...I just did some measuring:

Is this your bike?
What kind of rack is that on it?

[frnchy]

Is this your bike?
What kind of rack is that on it?

Nope, as stated in my post, it's landboard's bike from the 068 thread here: https://chinertown.com/index.php/topic,4875.30.html (my build is a couple posts down on that thread). It's the same size as my frame though so the measurements are the same for both. I'm not sure what the rack is, I thought it might be an Ortlieb rack but I just looked at their lineup and didn't spot any matching rack, so you'll have to reach out to landboard if you want to know for sure.

[BiDi_T4]

Maybe the TanTan GR201 / Tideace FM-GV201 is something to mention.
"For the single Chainring MAX size is 55T." It also has UDH Hanger and 50mm clearance.
There is already a thread for this frame on this forum.
https://chinertown.com/index.php/topic,4724.120.html

Edit: Maybe the Max size for the chainring is not correct. The user glosscherrybomb just mentioned that he had to use a spacer to fit his 46 chainring