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Racer Tech Thread

Old 04-15-15, 08:05 AM
  #1251  
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Originally Posted by caloso
I have some barely used Reynolds carbon brake pads but they are the Campagnolo shape and my race bike is SRAM/Shimano. Is it possible to alter them to fit Shimano holders? I was thinking I could use a rat tail file on the groove. Anyone tried this?
It's your brakes. New Cryo Blue pads are $22.
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Old 04-15-15, 10:57 AM
  #1252  
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Originally Posted by shovelhd
True, it can take some work to get the preload right. Going to a Shimano crank in a BB30 BB is going to require adapters or a conversion BB.
We went adapters - then the conversion BB. IMO the adapters are inferior to a BB30 setup and the conversion BB (Wheels MFG) are superior to a standard BB30 as they kick the bearings out another 10 mm. My son and his teammate both say they feel that. Praxis also makes a conversion adapter but I'm told it puts pressure on the interior of the BB chamber, while Wheels Mfg uses the threads.
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Old 04-15-15, 11:05 AM
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Originally Posted by mike868y
ah ****, i've already got the wheels mfgr on order. fwiw, most of my issues with this bike have been due to the crank, not the actual bb. but, when the wheels mfgr bb wears out, I may switch to a praxis.
Wheels Mfg makes adapters (https://wheelsmfg.com/bb-pf30-univers...no-cranks.html) and BB conversion kit (https://wheelsmfg.com/products/bottom...-outboard.html). The wheels Mfg adapters came with the bike. I purchased alloy Enduro adapters. Both adapters were nothing like the stiffness had in the wider bearing spacing on the prior MASI bike and was very noticeable to my son on the crank flex. I then went to the BB conversion solution which is much better.

Last edited by Doge; 04-15-15 at 11:11 AM.
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Old 04-15-15, 11:15 AM
  #1254  
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FWIW, my 2015 Allez Comp Race came stock with the Praxis adapter and their Turn Zayante crankset. Nary a sound. My 2012 Allez E5 frameset had standard SRAM BB30 bearings with an FSA carbon BB30 crankset, also silent.
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Old 04-15-15, 01:35 PM
  #1255  
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Originally Posted by shovelhd
It's your brakes. New Cryo Blue pads are $22.
You're right.
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Old 04-18-15, 07:10 AM
  #1256  
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More money (spent), more problems. On my old handlebar, i had space for my Garmin mount and a mount for a headlight (NiteRider Lumina). My new Zipp Vuka Sprint doesn't leave nearly enough space on the bar itself for mounting, which leaves me mounting to either the stem or my helmet. My stem is at -6 degrees, which means that the light would be directed above horizontal as opposed to slightly below horizontal as I would prefer. I could also do the helmet, but that seems to lead to problems of its own.

Suggestions?


Thanks in advance!
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Old 04-18-15, 07:25 AM
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I can't believe you changed to a compact bar after years of chiding me about mine.

The Barfly has a narrow profile at the bar end that might buy you a few mm. I'm not familiar with that model lamp but my Nightrider is adjustable about 30 degrees either way so I'm not sure why this is an issue. Maybe some pics would help.
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Old 04-18-15, 07:53 AM
  #1258  
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@shovelhd, thanks for the suggestion. I will snap a few photos later. In the mean time, i have mounted a small Sigma flashing light to the bar via elastic band/ zip tie. Perhaps i'll just get the helmet mount, though i hear drivers really hate helmet level lights...

PS. The bar is traditional round . And it gets even better as i apparently need special bar-end plugs as the Cat-eye screw-in type and the ones that came with my Fizik bar tape are both too wide...
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Old 04-18-15, 09:45 AM
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Echappist, depending on the stem you are using, you could use a Tilquist mount for the garmin to free up space for the light.
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Old 04-18-15, 09:47 AM
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Originally Posted by ips0803
Echappist, depending on the stem you are using, you could use a Tilquist mount for the garmin to free up space for the light.
or a stem cap mount for the garmin..again to free up space for the light.
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Old 04-18-15, 09:49 AM
  #1261  
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heh, #zippproblems - 'grats on the bars though - I'm glad to hear you are still flying the banner for SRMMafia and Aerohomies
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Old 04-18-15, 10:03 AM
  #1262  
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Originally Posted by ips0803
Echappist, depending on the stem you are using, you could use a Tilquist mount for the garmin to free up space for the light.
Originally Posted by spdntrxi
or a stem cap mount for the garmin..again to free up space for the light.
thanks for the suggestions. unfortunately, the suggestion would require me to shift the bar off center to make space, which i would prefer not to do at the moment
Originally Posted by Hida Yanra
heh, #zippproblems - 'grats on the bars though - I'm glad to hear you are still flying the banner for SRMMafia and Aerohomies
thanks @Hida Yanra; hope your preparations are going well
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Old 04-21-15, 12:39 PM
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gratuitous photos




now i need to find bar-end plugs that will fit the bars. The old ones are apparently too large. More #zippproblems ...
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Old 04-21-15, 12:49 PM
  #1264  
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Dumb q about bb30 adapter cups - are they supposed to rotate/spin along with the cranks?

My old ones didn't but they were glued onto the frame (from what I can tell) to stop them from creaking or something.

The ones I installed (Wheels Mfg) do, and I got some fancy Campy cups that'll hopefully be stiffer than the plastic Wheels Mfg ones.

Anyway I imagine it can go either way, but I'm wondering which way it's supposed to be.
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Old 04-21-15, 12:54 PM
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These things? They are supposed to spin with the bearings/crank.

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Old 04-21-15, 01:10 PM
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Yup those adapters.

With the campy cranks I have (external bearings) it seems like I'm not actually using the campy bearings, but only the bb30 bearings, if the cups spin too.. which obviously works, I was just confused about which way it's "supposed" to be.
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Old 04-21-15, 05:39 PM
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Not a Campy expert but I know that Praxis makes an adapter specifically for Campy Ultratorque cranks that the Campy bearings sit inside of.

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Old 04-21-15, 05:55 PM
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The campy bearings go inside of the bb30 adapter cups I have, similar to what those do. (so I might've been wrong about the first pic you posted, but they look a lot like that)

At any rate what I have works, just wanted to double-check. Thanks!
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Old 04-21-15, 09:25 PM
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Originally Posted by mattm
The campy bearings go inside of the bb30 adapter cups I have, similar to what those do. (so I might've been wrong about the first pic you posted, but they look a lot like that)

At any rate what I have works, just wanted to double-check. Thanks!

the way to think about it is whether the adapter goes into the bearings or the bearings go into the adapter.

anything that goes into the bearings rotates (e.g. the crank arm/spindle when you don't use an adapter, or an adapter+spindle+arm pressed into the bearings).

if the adapter is an extension of the frame (bearings get pressed into the adapter), then only spindle+arm rotate.
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Old 04-22-15, 05:01 AM
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Giro Synthe 200 mile review: Nice helmet, good quality of fit and materials. Definitely less cooling by a good margin than the Prevail it replaced. Not sure how much I'd like to race in August in the helmet.
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Old 04-22-15, 10:22 AM
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Originally Posted by Matt2.8NJ
Giro Synthe 200 mile review: Nice helmet, good quality of fit and materials. Definitely less cooling by a good margin than the Prevail it replaced. Not sure how much I'd like to race in August in the helmet.
While I would expect it to have less cooling than non-aero road helmets, from pictures it looks like it's better ventilated than other aero helmets like the Evade or Giro Attack. I have the Attack Shield, it's definitely not suitable for summer riding/racing in TX. I was thinking the Synthe might be a good choice but now I'm reconsidering. I don't mind giving up a little cooling for aero, but I definitely need something with better ventilation than the Attack Shield.
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Old 04-22-15, 10:41 AM
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As far as aero helmets go, I am surprised by how much air my Bell Star Pro flows with the vents open.
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Old 04-22-15, 10:51 AM
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I went from an Evade to a Synthe and they both seem fairly similar to me. I haven't used the Synthe over 70* or so as of yet, but I don't see if being a problem at all.
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Old 04-22-15, 02:14 PM
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I've used the evade up till the low 80.. Not bad.. Not a prevail but still ok
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Old 04-22-15, 10:16 PM
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Originally Posted by spdntrxi
I've used the evade up till the low 80.. Not bad.. Not a prevail but still ok
i've used the evade in 100+.

if you're climbing slowly in that heat, it is hot (so is the any helmet; the evade feels a tad hotter), but if you are riding at 25mph it is just fine (IMO).
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