Flow 30 Rim Weights and hole count recommendations

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Flow 30 Rim Weights and hole count recommendations

Postby PsychoMike » September 17th, 2014, 9:39 am

Didn't see anything in a quick scan for this and had another question anyway....so here it goes...

Jon or Chris...what would you recommend for hole counts if doing a custom build for a Clyde class rider (weight varies, but say 240#) with Flo30's? I'm thinking 24/28 Flow30's mated to Hope Mono RS hubs (Radial front, 2x rear) using CX Rays or double-butted DT spokes.

I know the hubs will be about 380 g total, I have a good idea of spoke and nipple weights....what about the rims? I suspect this sort of set-up can be built up stronger, lighter and more aero than my current wheels if I'm providing the wheel building (I've done a good number of sets).

Also, do you have a recommended maximum spoke tension?

Thanks :)
PsychoMike
 
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Re: Flow 30 Rim Weights and hole count recommendations

Postby Chris Thornham » September 17th, 2014, 11:45 am

PsychoMike wrote:Didn't see anything in a quick scan for this and had another question anyway....so here it goes...

Jon or Chris...what would you recommend for hole counts if doing a custom build for a Clyde class rider (weight varies, but say 240#) with Flo30's? I'm thinking 24/28 Flow30's mated to Hope Mono RS hubs (Radial front, 2x rear) using CX Rays or double-butted DT spokes.

I know the hubs will be about 380 g total, I have a good idea of spoke and nipple weights....what about the rims? I suspect this sort of set-up can be built up stronger, lighter and more aero than my current wheels if I'm providing the wheel building (I've done a good number of sets).

Also, do you have a recommended maximum spoke tension?

Thanks :)


PsychoMike,

When it come to building a set of wheels up from the ground, it's hard for us to give specific recommendations. That is because the wheel builder - you in this case - building the wheels will need to build a spec based on the components you are using and your personal characteristics, and then build a wheel based on those specs. Different spokes and hubs have their own tension specs so you will have to "do the math" to make sure things are built properly.

Some FLO 30 specs are as follows:

Rim Weight: 570g +/- 20g
Rim ERD: 586
Rim Type: Aluminum Clincher
Rim Depth: 30mm
Max Rim Width: 26.92mm
Brake Track Width: Angled, starts at 24.0mm and ends at 25.82mm

Now with regards to being more aero. I guess that really depends on the wheels you are already riding. If you are riding a standard box section rim, then yes the chances of this set being more aero are really good.

Sorry I don't have specific answers but I don't really have a specific answer to give you.

Take care,
Chris Thornham
FLO Cycling: http://www.flocycling.com
FLO Blog: http://bit.ly/b3Zlpq | Twitter: http://bit.ly/bOQ08x | Facebook: http://bit.ly/d8KDhI
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Re: Flow 30 Rim Weights and hole count recommendations

Postby PsychoMike » September 17th, 2014, 2:28 pm

Chris Thornham wrote:When it come to building a set of wheels up from the ground, it's hard for us to give specific recommendations. That is because the wheel builder - you in this case - building the wheels will need to build a spec based on the components you are using and your personal characteristics, and then build a wheel based on those specs. Different spokes and hubs have their own tension specs so you will have to "do the math" to make sure things are built properly.


I have an idea of the recommended maximum tensions for the hubs and spokes....but I'm wondering what yours are for the rim...lowest number of the three becomes the maximum for the build. I'm more specifically concerned whether the Flo30's are at all like Mavic rims, which have a fairly low recommended maximum spoke tension (90kgf vs 120 kgf which is more common). Do you have a spoke tension you typical have the shop use on your clyde rims....that would give me an idea about what I'm looking for :)

Chris Thornham wrote:Now with regards to being more aero. I guess that really depends on the wheels you are already riding. If you are riding a standard box section rim, then yes the chances of this set being more aero are really good.
Take care,


Yes, sorry about that....they'd be replacing a factory rim that is box section, but uses reduced spoke counts, machined rims and bladed spokes to try to improve their aerodynamic properties. I'm pretty confident if I go this route that the end product will be more aero overall than what's on my bike right now.

Thanks for the quick reply :)
PsychoMike
 
Posts: 25
Joined: March 7th, 2013, 12:53 pm

Re: Flow 30 Rim Weights and hole count recommendations

Postby Chris Thornham » September 18th, 2014, 1:01 pm

PsychoMike wrote:
Chris Thornham wrote:When it come to building a set of wheels up from the ground, it's hard for us to give specific recommendations. That is because the wheel builder - you in this case - building the wheels will need to build a spec based on the components you are using and your personal characteristics, and then build a wheel based on those specs. Different spokes and hubs have their own tension specs so you will have to "do the math" to make sure things are built properly.


I have an idea of the recommended maximum tensions for the hubs and spokes....but I'm wondering what yours are for the rim...lowest number of the three becomes the maximum for the build. I'm more specifically concerned whether the Flo30's are at all like Mavic rims, which have a fairly low recommended maximum spoke tension (90kgf vs 120 kgf which is more common). Do you have a spoke tension you typical have the shop use on your clyde rims....that would give me an idea about what I'm looking for :)

The highest recommended tension for the FLO 30 rim is typically 110kgf.

Chris Thornham wrote:Now with regards to being more aero. I guess that really depends on the wheels you are already riding. If you are riding a standard box section rim, then yes the chances of this set being more aero are really good.
Take care,


Yes, sorry about that....they'd be replacing a factory rim that is box section, but uses reduced spoke counts, machined rims and bladed spokes to try to improve their aerodynamic properties. I'm pretty confident if I go this route that the end product will be more aero overall than what's on my bike right now.

I think that is a pretty fair assumption.

Thanks for the quick reply :)
Chris Thornham
FLO Cycling: http://www.flocycling.com
FLO Blog: http://bit.ly/b3Zlpq | Twitter: http://bit.ly/bOQ08x | Facebook: http://bit.ly/d8KDhI
Chris Thornham
Site Admin
 
Posts: 567
Joined: March 2nd, 2012, 3:35 pm
Location: Las Vegas, Nevada


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