Roadini Sizing

[a.l]

Good morning everyone!

I'm looking to get prepared before the roadini launch later this year - I'm just slightly confused about sizing.

I have an 85.5ish PBH, so I'm straddling the line of both the 57 and 54. I know Grant has a funky philosophy on sizing, but man is it hard narrowing it down.

I've owned a 56cm Surly Midnight Special and a 55cm All City Zig Zag. When comparing them on bikeinsights to a 54cm Roadini, they're somewhat similar. When looking at the 57 on insights, it looks waaaaaay way way taller. I understand their stacks are usually higher but should I be conservative when selecting a size? Size down? Size up?

What's everyones experience with their modern roadini?

[Dan]

I have a 57cm Roadini. I’m 6’ tall with a PBH of ~89 and saddle height of 77.5. You can see what this looks like below. It’s a tall bike, especially when you figure in the extra stack from the headset! I think the lowest I could put the bars is maybe 2-3cm below the saddle. As shown they are maybe 1-2cm above the saddle. 

From what you’ve said about yourself, if you want to run drop bars then a 54 may be your best bet. Sounds like that matches the bikes you have already too. If you want to run alt bars, well, see if you’d be comfortable with the standover height on the 57!

[Garth]

You really have to know yourself Adrian, as in what stem and bars at what length/height you will be riding it with. Basically, figure what spec numbers matter most to you and base the frame size on that. Look at the numbers and know what you're comparing carefully !  Seat tube height only matters that you have enough, as in it's not slammed to the seat lug. Otherwise the fit is all about forward reach and the height of the front end and if it allows you to position the bars where you want them. If it's too high even with a very(-25/35d) negative rise stem you're at a dead end. Same if the front length is insufficent. In those cases you're better off with something else. 

[Adrian Lara]

Thanks guys for your input! I'm leaning more towards the 54 but we shall see - hopefully I can make it out to Rivendell before the ordering window. They're about 6 hours away but it might be best.

[Piaw Na]

When I bought my Roadini Will asked if I was going to run drop bars. When I said yes he said: "54". I have a PBH within 0.5cm of yours for what it's worth. In other words size smaller for drop bars, and size bigger for albatross bars.

[Franco Rinaldi]

My pbh is around 87.5. I have a 57 Sam that fits quite well. Building a 54 roadini now for a roadier fit. I hen you size down, you can lengthen the stem and run a non setback seat tube which shifts your weight forward on the bike. All this explained to me by danny boy lol. But I borrowed wheels to do a test ride of my 54 and it rode and felt perfect.

Franco Rinaldi 

c:  646.403.0661 

-Pardon any typos, Siri typed this message-

On Apr 1, 2025, at 6:34 PM, Piaw Na <pi...@gmail.com> wrote:

When I bought my Roadini Will asked if I was going to run drop bars. When I said yes he said: "54". I have a PBH within 0.5cm of yours for what it's worth. In other words size smaller for drop bars, and size bigger for albatross bars.

--
You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bun...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/rbw-owners-bunch/c5126bcc-da1d-44ef-b6bb-6b9989bdda79n%40googlegroups.com.

[Jay]

My suggestion is the 54.  You can easily raise the stem/bars, put a longer stem on, use a set-back seat post if needed, or maybe just slide the saddle along the rails.  But you cannot (easily) lower the bars too far (without a very negative stem), put too short a stem on, or use a 0 offset post and push the saddle only so far forward.

[Adrian]

Yeah, it's a lot easier to make a smaller bike feel "bigger" than it is to make a bigger bike feel "smaller" - I'll more than likely end up going with the 54 when the time comes.

[Franco Rinaldi]

If you look at the geometry - the 54 and 57 have the same reach. It really boils down to where you want your weight over the wheels. Assuming you fit both in a close enough fashion. 

Franco Rinaldi 

c:  646.403.0661 

-Pardon any typos, Siri typed this message-

On Apr 2, 2025, at 6:10 PM, Adrian <adria...@gmail.com> wrote:

Yeah, it's a lot easier to make a smaller bike feel "bigger" than it is to make a bigger bike feel "smaller" - I'll more than likely end up going with the 54 when the time comes.

To view this discussion visit https://groups.google.com/d/msgid/rbw-owners-bunch/d56ab94a-9df8-45b4-89a5-3694531f661bn%40googlegroups.com.