Fattest Tire on a QB?

[Robert Gardner]

Hi everyone --

I recently saw a post on Instagram (which I have subsequently lost track of) that showed a QB rocking Ultradynamico 700ccs (I think they were the Rosè racers). 

As I am in the market for some new rubber I thought -- WOWZA -- that would be fun. So, I'm throwing myself at the mercy of the few the proud the QB riders on this list. What's the fattest you've been able to go on a QB (if it helps, I ride a 58...)

Thanks all --

RGinDC

[Michael Williams]

RG,   I used to be able to fit BG rock n roads ( 700x43) on my Orange 64 QB a few years back with the wheel in the middle to rear of the dropouts.   And the RnRs have some decent side knobs to take into account.  Not sure of exact mm clearance on each side but it was fine.    -Mike

Sent from my iPhone

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[Jim M.]

I had Big Apple 50s on mine. Fit was maybe a little tight but no paint rubbed off, so I think it was good.

jim m

walnut creek, ca

[Patch T]

The largest I've confidently fit on my orange 56 were Soma Cazadero 42s, Dyad rims, wheel around the back-middle of the dropouts. 

I never tried any wider, as the chainstay clearance looks like the max for my piece of mind. (I like riding it on rougher stuff than paved stuff, so a hairline clearance is not an option for me)

I'd be willing to bet that the UDs will fit. AND I may end up doing the same move once I put the QB back together. I have the 650b ROSE "mullet" set-up on my custom Bantam and the combination of knobs in front and file tread in back is super fun on trails, good enough on pavement.

Patch

BK/NY

[Patch T]

Edit: by ROSE I meant RACE. The names are confusing to me still.

[John G]

Specialized Fatboy 45s, although I've recently gone back to 32s

https://flic.kr/p/2hFGfWf

John G

Union Bridge, MD

[Jeremy Till]

Like John G I maxed out my orange QB with 700x45 Specialized Fatboys shortly before I sold it. Here's a set of pictures I took for the buyer showing the clearance: 

https://flic.kr/s/aHskJEmRH3

It looks like chainstay clearance was the limiting factor. If I remember correctly these measured a little narrower than marked on H Plus Son TB14 rims.  

-Jeremy Till

Sacramento, CA

[greenteadrinkers]

Running 700C X 42 Hurricane Ridge tubeless on Cliffhangers with V/O Zepplin fenders on my 56cm Simple One, clearance with fenders is a little tight, but not too tight.

Scott  |  Amherst, MA

[Jim M.]

On Wednesday, March 31, 2021 at 3:42:50 PM UTC-7 greenteadrinkers wrote:

Running 700C X 42 Hurricane Ridge 

We don't want link to the tires, we want a link to pictures of the QB with the tires. I'm sure it looks great.

jim m

walnut creek 

[Hudson Doerge]

Ive also run BG Rock n Roads on my Simpleone with plenty of clearance. Really the only limiting factor are my Paul mini Vs. One thing to take into account is I believe the tire clearance gradually increased on different batches of the QB and the SO had the most clearance yet.

-Hudson in ATX

[Robert Gardner]

Update on this thread. My initial reaction is that these ultra dynamic tires are dang nice. I have a mullet setup, so we will see if that helps/makes the ride more sticky or not. That said, my first riding reaction is: these raised the riding position from the 28s I was riding on significantly. I really like that. Additionally, the increased tire size really makes me more comfortable on sketchy roads. To me, that is a-ok! 

The front has a fair amt of clearance, the rear...not so much. I don’t think I could have gone much fatter. That is on a 58 qb...take from that what you will. 

These tires are a great compliment to the QB and I am all around stoked. 

Sent from my iPhone

On Apr 2, 2021, at 8:40 AM, 'Hudson Doerge' via RBW Owners Bunch <rbw-owne...@googlegroups.com> wrote:

Ive also run BG Rock n Roads on my Simpleone with plenty of clearance. Really the only limiting factor are my Paul mini Vs. One thing to take into account is I believe the tire clearance gradually increased on different batches of the QB and the SO had the most clearance yet.

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[Patch T]

Very nice. They look great with the grilver frame. Some day they'll look great on my orange.

The mullet set up I have (different bike) with 650b x 48 is especially fun on trails for skidding through turns and gettin loose. Curious how it feels on a QB with 700c x 42.

If you don't feel good about the clearance you currently have, you can always move the wheel back with a longer chain or added links.

Enjoy!

Patch

BK/NY

[Paul Brodek]

Holy Moly, a Paul Flatbed? Sorry for the semi-zombie revival, and thread drift and all that, but how'd that Flatbed work for you, Jim? I've had one forever, trot it out now and then, find it always cool, but kinda floppy.

Paul Brodek

Hillsdale, NJ USA

On Sunday, March 28, 2021 at 11:03:46 PM UTC-4 Jim M. wrote:

[Jim M.]

On Friday, June 18, 2021 at 8:27:21 PM UTC-7 Paul Brodek wrote:

Holy Moly, a Paul Flatbed? Sorry for the semi-zombie revival, and thread drift and all that, but how'd that Flatbed work for you, Jim? 

Form was superior to function, so it didn't last long. Also, the stated weight limit was pretty low, from what I remember. Pretty sure I sold that to a list member quite a while ago.

Cheers,