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  #1  
Old 07-15-2015, 11:55 AM
jdp211 jdp211 is offline
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Salsa La Cruz 650b

I've been working on this project since about two weeks after Baller's, but held up by various delays. Toying around on some friends' Seven Evergreens (one 650b and one 700c) bikes was a bit eye opening for me and got me rather itchy for a new ride. After finding that stock 650b disc frames are (were) non-existent, I searched for a worthy candidate for a conversion. Requirements were disc, big (BIG) tire clearance, road-ish geo, and fender mounts. What I decided was the perfect frame for this was the Salsa la Cruz. I found one in decent condition, plasti-dipped (poorly) the frame and fork to colors I dug, and have been acquiring parts for a while for it. I was initially going to build it with Campy bits that came off of my Black Mountain, but when I went to build with them I found that my left shifter was shot. I figured it would be a good time to try something new and that the build begged to be built with a 32t cassette, so I sold off the Chorus parts and used the funds to purchase a brand new 5800 group. I had also tracked down a pretty excellent deal on a set of brand new DT 240s laced Velocity Blunts. I should have the build finished tonight, but won't get the chance to seriously test it until next week some time.
Untitled by jacob Perlmutter, on Flickr
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  #2  
Old 07-15-2015, 12:04 PM
guido guido is offline
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Very Sweet! Those Compass tires do change the world...
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Soma Double Cross, Elephant NFE, Salsa Bucksaw
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  #3  
Old 07-19-2015, 09:05 PM
jdp211 jdp211 is offline
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Finally got it 99% done!
DSCF4546 by jacob Perlmutter, on Flickr
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  #4  
Old 07-21-2015, 10:16 AM
jdp211 jdp211 is offline
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Got a first ride on this monster last night and holy crap was it fun! First time on a disc road bike for an appreciable amount of time and I'm pretty sold. I need to play with tire pressure a bit to really dial them, but they felt great at 38/42 on a mixed surface ride. I've been on Campy for the past few years and am rather impressed at how well the 5800 bits work, Shimano totally knocked it out of the park. All in all I'm pleased with this experiment and can't wait to really beat on this thing leading up to D2R2.
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  #5  
Old 07-21-2015, 12:31 PM
sandyrs sandyrs is offline
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This thing is wild. No D2R2 for me this year but maybe I'll get a look at it plowing through some dirt next time I'm back at my parents'.
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  #6  
Old 07-21-2015, 01:43 PM
jdp211 jdp211 is offline
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Too bad about D2R2, give me a shout if you're in Westchester for sure!
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  #7  
Old 08-11-2015, 07:32 AM
jambee jambee is offline
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I'm curious about this build - what does it take to actually convert the rig to 650B? Anything other than "get 650B wheels and tires and mount?"
Are there other considerations?

I have a Hunter Breakaway (disk, loads and loads of room for tires) and I'm wondering what will converting it to 650B will bring and what are the benefits?
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  #8  
Old 08-11-2015, 07:36 AM
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weisan weisan is offline
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jdp pal, very nicely done, enjoy the magical ride of 650b.

jam pal:

When I converted my Bianchi, these two places have helped me a lot.

https://www.bikeman.com/bikeman-blog...sion-guidlines

http://www.sheldonbrown.com/650b.html
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  #9  
Old 08-11-2015, 08:13 AM
jdp211 jdp211 is offline
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Thanks Weisan!

Jambee, the short version is that the 'conversion' really is as simple as just swapping in new wheels. The slightly longer version is that for the same rolling riameter as a 700x23, you can run way more tire and way less pressure, giving lots more traction over just about any surface. As such, there's minimal impact on BB height and handling seems minimally impacted. Its definitely more stable feeling than my Skeletor (though that's to be expected), but I feel more confident in most situations on the La Cruz (likely due to the massive rubber).

I haven't raced the bike, and would be sort of curious to do so, but I've not noticed any downsides to going 650b over 700c. On a ride a couple of weeks ago, the two of us on 650b bikes were rolling down paved descents noticeably faster than our 700c counter parts (with both skinny and fat tires) and ripped around dirt.

This was kind of my inspiration for seeking the frame that I did. I'm definitely interested in throwing some knobbies on and hitting the single track near me, too, just to see how that goes.
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  #10  
Old 08-11-2015, 08:24 AM
jambee jambee is offline
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This could be an interesting way to try something new on one of two disk rigs I have: Hunter and Seven Cycles. Both frames have a lot of clearance (hunter fits 2.1 Inch), but I have zero experience with 650B.

If I can mount those Compass tires...that will be a great thing to try!

So I guess i need 650B wheels....thanks for the inspiration!
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  #11  
Old 08-11-2015, 07:29 PM
in_version in_version is offline
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Wink

Looks better in person than your mediocre photos.

Have you taken it off any jumps yet. Looks like it wants to catch some air!
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  #12  
Old 08-11-2015, 08:30 PM
jdp211 jdp211 is offline
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Its definitely caught a little air, no sweet jumps though. Maybe we can get rad at the Kisco skatepark with it sometime soon
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  #13  
Old 11-05-2015, 05:48 PM
jdp211 jdp211 is offline
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Pulled off most of the plasti-dip the other day and fitted mudguards for the coming wet months
Untitled by jacob Perlmutter, on Flickr
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  #14  
Old 11-06-2015, 03:14 AM
jambee jambee is offline
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Still love this bike. The new "color scheme" is great!
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  #15  
Old 07-01-2016, 02:45 PM
Mikeys Mikeys is offline
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are those babyshoe pass tires? kind of hard to tell from the photo. how's the clearance? looks great
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