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-   -   Racer Tech Thread (https://www.bikeforums.net/33-road-bike-racing/956936-racer-tech-thread.html)

revchuck 09-16-14 05:09 AM


Originally Posted by shovelhd (Post 17134506)
I tore down the Felt last night. Fished the wires. Ready to start building it back up tonight.

Reincarnated as 11 speed?

Re: the bead with P4Es, I've never had a hint of a problem with that.

shovelhd 09-16-14 05:11 AM

9070. That's 11 speed Dura Ace Di2 for Fudgy.

tetonrider 09-17-14 09:42 PM


Originally Posted by shovelhd (Post 17134506)
I tore down the Felt last night. Fished the wires. Ready to start building it back up tonight.

nice. post a pic when done. you're gonna love it. more better (truly).

Creatre 09-18-14 06:19 PM

So problem with my new bike: My front wheel rubs on my fork sometimes. I kept thinking it was my brake pads but I couldn't understand why because I kept checking and it looked fine. Apparently its the wheel/fork. :(

It spins true, but just for some reason appears to be slightly offset to the left side of the fork gap. Do I need to just tighten the hub or something? or is the wheel bad?

globecanvas 09-18-14 06:55 PM


Originally Posted by Creatre (Post 17143113)
It spins true, but just for some reason appears to be slightly offset to the left side of the fork gap. Do I need to just tighten the hub or something? or is the wheel bad?

Sounds like a wheel build issue. I'd take the wheel in to a shop that knows about wheels.

shovelhd 09-18-14 06:59 PM


Originally Posted by tetonrider (Post 17140295)
nice. post a pic when done. you're gonna love it. more better (truly).

Posted. 7970 was great, this is better.

shovelhd 09-18-14 07:00 PM


Originally Posted by Creatre (Post 17143113)
So problem with my new bike: My front wheel rubs on my fork sometimes. I kept thinking it was my brake pads but I couldn't understand why because I kept checking and it looked fine. Apparently its the wheel/fork. :(

It spins true, but just for some reason appears to be slightly offset to the left side of the fork gap. Do I need to just tighten the hub or something? or is the wheel bad?

Where does it rub the fork? If it is lateral play it should hit the brake pads first. Is it hitting the bottom of the fork crown?

globecanvas 09-18-14 07:09 PM

Also, what happens if you flip the wheel (so the QR lever is on the wrong side)?

Creatre 09-18-14 08:10 PM


Originally Posted by shovelhd (Post 17143226)
Where does it rub the fork? If it is lateral play it should hit the brake pads first. Is it hitting the bottom of the fork crown?

The fork is actually curved, so it's wider where the brake pads are and gets thinner towards the middle, which is where it is rubbing. it's also the opposite for the wheels, where the wheels are thinner at the brake track and get wider at exactly the point the fork gets thinner (d'oh).

I'm going to try flipping the wheel. Would explain why I haven't noticed it until after I took it on a trip last weekend (so took the front wheel off to put in car).

spdntrxi 09-18-14 10:31 PM

have the dish checked ..

revchuck 09-20-14 04:01 AM

I think I'm going to hang on to the Reynolds tubulars. I ordered a cheap pair of tires to replace the Tufos - Specialized Espoirs - because I can get them at cost and figure if I screw these up mounting them, it won't be a great loss; also, as a training tire, they should be relatively bombproof. I'm surprised that they can offer 220 tpi and the newest Gripton compound at that price point. The plan for next season is to replace the Espoirs with the S-works Turbo Allaround 2 after Rouge-Roubaix. The Allarounds won't be available for a couple of months, anyway.

shovelhd 09-20-14 04:39 AM

So you are going to use the Psimets as training and pit wheels?

revchuck 09-20-14 05:17 AM


Originally Posted by shovelhd (Post 17147047)
So you are going to use the Psimets as training and pit wheels?

I haven't figured that part out yet. I'm definitely keeping them, I'm probably keeping the Reynolds. I'm still up in the air about whether I want to put up with the additional hassles that come with tubulars, but I do want to give them a fair try.

Ygduf 09-20-14 10:11 AM

out with the frustrating, in with the differently frustrating.

http://i.imgur.com/qpzXMsOm.jpg

spdntrxi 09-20-14 10:48 AM


Originally Posted by Ygduf (Post 17147524)
out with the frustrating, in with the differently frustrating.

http://i.imgur.com/qpzXMsOm.jpg

New things are usually that way.... growing pains with Pioneer huh. I'm actually thinking of trying Garmin Vector.. I don't know why.. curious about left and right I guess, since my left knee is suspect. Using powertap currently but wifes bike has stages.

Ygduf 09-20-14 12:01 PM


Originally Posted by spdntrxi (Post 17147595)
New things are usually that way.... growing pains with Pioneer huh. I'm actually thinking of trying Garmin Vector.. I don't know why.. curious about left and right I guess, since my left knee is suspect. Using powertap currently but wifes bike has stages.

The initial setup, with the wireless uploading and whatnot, was a little painful. Also setting up the pageset data fields with a conductive touch screen is really painful. Unlike garmin though, these are stored in an XML file so I copied them and will never have to do it again.

I think it would be easier if the directions weren't clearly translated poorly from Japanese! But, now that it's all done, the wifi upload is nifty.

spdntrxi 09-20-14 12:46 PM

I ordered Vectors.. Large pods to go with my THM M3.. which I have no BB for since they are out of stock :( Winter project ...that and converting my Di2 to internal seatpost battery from external... gotta get those grams back for heavier pedals, that and rebuilding rear wheel with no powertap.

Pioneer has a pretty good deal going..
http://www.bikerumor.com/2014/09/20/...ds/#more-87043

furiousferret 09-20-14 03:28 PM


Originally Posted by spdntrxi (Post 17147857)
I ordered Vectors.. Large pods to go with my THM M3.. which I have no BB for since they are out of stock :( Winter project ...that and converting my Di2 to internal seatpost battery from external... gotta get those grams back for heavier pedals, that and rebuilding rear wheel with no powertap.

Pioneer has a pretty good deal going..
IB14: Pioneer Adds Cycling Computer Bundles, Integrates Di2 & Auto Strava Uploads

I like my Vectors.

If you do have leg issues the Left Right Balance helps out a lot. There is also pedal efficiency and torque effectiveness which after reading some journals I don't think are as critical.

furiousferret 09-20-14 03:42 PM


Originally Posted by Ygduf (Post 17147524)
out with the frustrating, in with the differently frustrating.

http://i.imgur.com/qpzXMsOm.jpg

I'm curious to see how this comes along. Garmin finally has competition. I like the new Pioneer stuff (I'm guessing you just have the head unit), a tad bit concerned that they may get pushed out of what has become a competitive market. The force vector readings (where the watts are being produced in the pedal stroke) seems like a game changer.

Ygduf 09-20-14 03:50 PM

I didn't buy the power meter, just the head until. I would wager a large portion of whatever we're wagering that force-vector stuff is useless. Like runners asked to change their stride, focusing on a different pedal stroke/stride probably leads to lower efficiency.

tetonrider 09-24-14 03:47 PM


Originally Posted by tetonrider
Finally got around to taking inventory of my 10s cassettes. i'm going to list on ebay within the next 24h. here's what i've got, in case anyone has a particular interest.

11-21: DA 7900 solid shape, trainer use
12-21: DA 7800 nearly perfect
11-23: DA 7900 & Ulty 6700
12-23: Ulty 12-23....condition of this one looks a little rougher...would be super cheap or maybe free with another cassette
11-25: DA 7900 x 2; 6700 x 3 + Campy Record (NIB)
12-25: DA 7900
11-27: DA 7900--had a few superficial rust marks--this it was put away after getting wet but the profiles all look great
12-27: Ulty 6600
11-28: DA 7900; Ulty 6700 (this one looked a little rough)....also a NIB DA 7900 11-28
11-32: Sram XX
11-36: Sram XX


Also, 2 new (with warranty, I'm a dealer) SRM PC7 head units; one is black with black facing, the other gray with white facing. Retails for $750. Includes the full package (Suunto HRM, SRM speed sensor, bar mount, int'l wall charger, etc.). Asking $450 OBO. Selling on behalf of some customers.



Originally Posted by echappist (Post 17126593)
dibs on the 11/36, for my road bike

just in case anyone is still looking, i wound up selling all cassettes except for:
* 2 x 6800 11-25
* 1 x 7900 11-25 (new in box)
* 1 x Record 11-25 (new in box)
* 1 x XX 11-32 (it's still on a bike of mine...not quite ready to sell it)
* 1 x XX 11-36 (had 2, sold one, the other is still on a bike and not quite ready to sell)
* 2 x Cannondale 2x10 SRMs -- with rings, you supply the Hollowgram arms <==These are MTB 2x10 units.

PC7s are sold. will have another to sell in a week or two. if someone is interested, shoot me a note and you can select your color.

also will be selling a zipp 404 rear (firecrest carbon clincher, but shimano 10/campy 11 only), 101 front & rear (same deal, shimano 10/campy 11), and shimano dura ace 7900 c35 tubular wheel set.

Ygduf 09-24-14 03:48 PM

what price on the 7900 11-25? and the used 6800s?

tetonrider 09-24-14 08:59 PM


Originally Posted by Ygduf (Post 17159585)
what price on the 7900 11-25? and the used 6800s?

probably more than you want to spend.

$39 for the 6800s and $160 for the 7900. the 6800s are technically used (=installed), but the teeth are in as close to new shape as they can be when they've ever had a chain touch them. low miles.

ips0803 09-25-14 09:35 AM

Semi interested in an SRM depending on price. Be nice to ditch wires

abhirama 09-25-14 10:48 AM


Originally Posted by tetonrider (Post 17083438)
avoid.....ESPECIALLY in 52/36. they made them light, but a larger ring with smaller BCD exacerbates the problem. if you're going to go 52/36, you want stiff rings.

digging an old post but i was curious about this: since the new 4-arm shimano uses the same bcd for all its rings (correct, right?) they don't have issues wrt stiffness for the bigger rings? not that i would notice it but curious all the same. i ask because i may be looking at getting a 5800 or 6800 group and was looking at crank options.


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