[RBW] Re: Machined vs non-machined rims

[Philip Kim]

Switchback hills on Synergy rims seated just fine for me (much better than 
hetres). They measure about 42mm stretched for about a month or two. I can 
take a digital caliper measurement at whichever pressure you'd like.

On Friday, October 14, 2016 at 2:54:46 PM UTC-4, Lungimsam wrote:
>
> The attraction of the GB rims is that they auto seat compass tires. No 
> massaging necessary. I could get the machined A23 set But then I would have 
> to pay for a whole new wheelset 500 bucks. Maybe I'll just switch from the 
> yokozuna pads to cool stops and Swiss stops and see what happens with all 
> my existing rims.

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[RBW] Re: Machined vs non-machined rims

[Lungimsam]

 The attraction of the GB rims is that they auto seat compass tires. No 
massaging necessary. I could get the machined A23 set But then I would have to 
pay for a whole new wheelset 500 bucks. Maybe I'll just switch from the 
yokozuna pads to cool stops and Swiss stops and see what happens with all my 
existing rims.

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[RBW] Re: Machined vs non-machined rims

[Bill Lindsay]

Eric is right.  Use your Synergies, make the best of it, and enjoy 
yourself.  Machined sidewall rims are a little better in the rain, in my 
experience.  That said, rim brakes always perform worse in the rain.  If 
you go a long time between uses, and grab the brakes when you need to stop, 
like NOW, the feeling is almost that the brakes make you speed up.  Brake 
early.  If you are in a scenario where you can anticipate needing to use 
the brakes (like on a descent or in town or in a group), consider the 
technique of frequently using your brakes very lightly to squeegee some of 
the water off.  When it is raining, also congratulate yourself by 
meditating on Rule #9.  


Bill Lindsay
El Cerrito, CA

On Friday, October 14, 2016 at 10:35:23 AM UTC-7, Eric Karnes wrote:
>
> I had a set of 650b A23s set up with Riv Silver Brakes. They were nice, 
> but honestly not significantly better than my (non-machined) C-18s in terms 
> of braking. Unless you think the braking performance is bordering on 
> dangerous, I would just go with the Synergys you already have and see if 
> you can improve things a bit with brake setup/pads/etc.
>
> Eric
>
> On Friday, October 14, 2016 at 11:20:32 AM UTC-4, Lungimsam wrote:
>>
>> Bump. Anymore feedback? Trying to decide between my spare Synergy set or 
>> GB set. Neither were great in rain. Wonder if A23 better (machined). 650b. 
>> Long reach sidepulls.
>
>

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[RBW] Re: Machined vs non-machined rims

[Eric Karnes]

I had a set of 650b A23s set up with Riv Silver Brakes. They were nice, but 
honestly not significantly better than my (non-machined) C-18s in terms of 
braking. Unless you think the braking performance is bordering on 
dangerous, I would just go with the Synergys you already have and see if 
you can improve things a bit with brake setup/pads/etc.

Eric

On Friday, October 14, 2016 at 11:20:32 AM UTC-4, Lungimsam wrote:
>
> Bump. Anymore feedback? Trying to decide between my spare Synergy set or 
> GB set. Neither were great in rain. Wonder if A23 better (machined). 650b. 
> Long reach sidepulls.

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[RBW] Re: Machined vs non-machined rims

[Lungimsam]

Bump. Anymore feedback? Trying to decide between my spare Synergy set or GB 
set. Neither were great in rain. Wonder if A23 better (machined). 650b. Long 
reach sidepulls.

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[RBW] Re: Machined vs non-machined rims

[Zed Martinez]

I've never had good luck with braking power on mirror-finished rims. At 
least, the VO ones were terrible for it. I think it's something in the 
anodization that hardens them, they never seem to get their surface to 
groove and seat properly. Low stopping power and lots of noise with 4 
different types of brakes and 5 different pads. Just had one of my wheels 
rebuilt with a NMSW but also non-polished Atlas and the stopping power and 
noise have been considerably better even without going back to salmon pads. 
The one thing I found with the VO mirror polished, and maybe it'd help with 
the Grand Bois, was every other week or so I'd take the pads off and scuff 
the surface with a rasp, and then I'd have excellent and quiet stopping for 
a while until the pads wore smooth again. And every time I'd check the pads 
they'd not just be smooth, but glazed. Never had such problems with any 
other rim I ever used, and maybe the VO ones just have issues, but it's 
really put me off mirror finish rims at this points.

On Saturday, October 1, 2016 at 1:11:59 PM UTC-4, Lungimsam wrote:
>
> I have noticed very low braking power on my non-machined Grand Bois rims. 
> Even with yokozuna salmon pads.
> I am hopefully going to try kool stops. If that doesn't help, blue swiss 
> stops.

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[RBW] Re: Machined vs non-machined rims

[Lungimsam]

I have noticed very low braking power on my non-machined Grand Bois rims. Even 
with yokozuna salmon pads.
I am hopefully going to try kool stops. If that doesn't help, blue swiss stops.

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[RBW] Re: Machined vs non-machined rims

[Alex Wirth- Owner, Yellow Haus Bicycles]

I've noticed a fairly significant decrease in braking power on my non-machined 
rims (VO, CR-18) in the rain vs my bikes with machined rims. 

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[RBW] Re: Machined vs non-machined rims

[Ray Varella]

The only difference I have noticed is when setting up new rakes and new rims, I 
had slightly less brake squeal (until the pads bedded in) with machined rims. 
My hypothesis was that the machined sidewalls worked the way a slightly scuffed 
rim worked. 

The difference was marginal and would not drive my decision on rim choices. 

Cheers
Ray
Vallejo CA

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[RBW] Re: Machined vs non-machined rims

[Garth]

  Rims are rims. The inherent quality of the rim is more important than 
machined or not. If you think non machined may last you longer, stronger, 
bigger better etc. etc. , think again. If you think machining gains/saves 
you anything either , think again !  Or simply don't think at all, really, 
it's so much easier to live and we all know it, just smile and behold ! 

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[RBW] Re: Machined vs non-machined rims

[Ron Mc]

I have machined Synergy and Open Pro rims, and non-machined Campy Moskva 
(and some non machined tubies).  Other than taking a little more attention 
to align the pads on the non-machined rims, no notable difference in 
performance.  

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