Black Oval chainring, Crank Breaker?

    So, eight years ago, when my 3x9 was wearing out and 1 bys were becoming all the rage, I opted for the Shimano XT 42-11 cassette and needing a no drop chainring I got a 32t from Black Oval. 

See hear for the install:

https://www.mtbepicrides.com/2016/06/one-by-eleven.html

Yes, I kept the package for Eight years!

My First ride on this set up was May 24th, 2016.  And While I did not ride much after May 2017 Strava says I logged 212 rides on that set up since.  I am not prepared to do the data mining yet for the miles and elevation gain, LOL!  Needless to say, it was a lot. I did replace the chain in October of 2019, when I got back on the horse to ready myself for some friends that were visiting in February.

So, as I was JRA anticipating getting my single speed together going up a short steepish climb in the 32/21 I believe and bang, I thought I broke the chain, not so lucky, while the chain did get twisted a bit, I looked down to see a mangled mess of twisted chainring.  Thinking to myself that’s odd, but I have more at home.  But before I could contemplate the walk out to the road, I realized a much bigger shock, three of the ears that held the chainring on the crank had completely snapped off!!!! and the 4th was ripped open?  This is an XT crankset and yes, I have put umpteen miles on it and I tipped the scale at 240+ pounds and my legs were getting strong after a few months on the bike (After 4 years off) and lifting many kegs at work, but jumping Jehoshaphat!  Me and My buddy just stood there not quite comprehending what had happened.  My friend, who worked in a bike shop for quite some time said, "That's a new one" and between us we thought we had seen broken or broken ourselves, everything on a bike.  I also worked at a bike shop for several years and one of my friends wife use to call me "everything is broken Man"  

But I digress.  So was it metal fatigue, was I too fat.  While my friend rode to get the car and I walked to the nearest trail head, (we were halfway through a 14-mile ride) I had time to ponder and wonder if the Black Oval chainring, which was light weight (maybe too light) and the material around the bold holes got nowhere near the lands on the crank was the culprit.  All the bolts were still tight in the threaded chainring holding on the three ears from the crank, suggesting that the chainring fold/twisted under the load and twisted off the ears of the crank.

There was a silver lining though, we thrashed that evening and converted My Lynskey with a Black Sheep fork, back to its single best destiny... a 

Single Speed

I'M BACK!

  I have been gone for a while and oh so much has changed  I pulled a Forrest Gump about 7 years ago and just stopped riding.  Yea no one saw that coming not even me.  About 4 years ago My Friend TK was doing a training camp at Mc Dowell MT Park in February so I did Ride for a few months so I would not completely blow.  But then Covid hit and I did the opposite of everybody else and stopped riding.  Besides I hadn't adapted to summers in the Valley here in Arizona yet anyway Yada Yada Yada.  Fast forward To November 2023 when my buddy George came to visit.  We had no plans to ride.  But my seeing him was the spark I needed.  I proceed to break my Powertap hub at the gate, so we hiked.  I had  laced up a wheel several year ago, so I tensioned it and we were off to the races..... Whoa slow down, man did I blow Ha, Ha, Ha.  After of course setting up 7 year old new tubeless tires.  Boy was I out of practice!

Colorado Trail Durango Segment 28

Well the description on MTBProject.com says "Drive (or ride) approximately 18 miles up Junction Creek Road to the junction with FS 171N. This intersection is well marked with a sign to the Colorado Trail."  Well challenge accepted!  I had been going a little further up FS 204 (Junction Creek Rd) each week or so, at least up to where the snow hadn't melted yet.  Then I put it off another week, as a visitor from Thailand, of all places, came to Durango to ride Kenebec pass, which he was told was still snowed in.  Looking at the map, I was not sure which section of the Colorado trail that was on.  I did some killer rides up at Hermosa creek in the mean time.

I hit the Forest Service road for a little threshold training at the beginning of the couple hour HC climb.  I keep riding up past the upper trail crossing of Log Chutes 2, (last ride this is all I had), gaining 2000 feet in about an hour, past the Animas overlook, ( a common drop into unnamed single track for me).  I continued up past Log Chutes 3 and Downhill trail head, past Rand's Point and Cape Horn.  I caught a glimpse of Kenebec pass, (as pointed out bu a local I meat on the Extended ridge trail over looking Durango) and if I understood him correctly, it still looked snow locked to me.  But I never seemed to get above it and actually started to descend a fair ways to 171,

which climbed a little to the Colorado trail Crossing.


While the Strava file shows mainly a descent (Lower Kenebec, not the pass) for some time it seemed like there was a lot of up and down even before the last brutal climb to high point.

There is a beautiful waterfall about 2 miles down:


Followed by a smaller falls that you rode right along, about 3 miles down:

one by eleven

While I have original flavor SRAM Red on my road bike now, I am mainly a Shimano guy.  XT is my "Go To" on a mountain bike, I have used 105 on a road bike and drool over DI2 for either.  Even so I covet that SRAM 10 to 42 tooth cog.  My 9 speed is getting a little long in the tooth sic, the last chain I put on had to be "Ridden in" some before all the gears worked.  I recently tried to repeat this feat and she was just not having it.  Well it has been two years (I have ridden my single speed and road bike a fair amount of that time).  I have ridden my 9 speed straight through the existence of 10 speed.  The last chain that rode in was around when XTR released 11 speed and SRAM was introducing a second level, all boo koo bucks.  Fast forward to today,,, Finally durable, affordable, raceable XT was came along and now that I need it, it is high demand of course.

I am concerned that 32/42 will not be low enough in the the long High mountains of Durango,  I have been practicing using a similar low gear, which showed promise.  On the flip side I am wondering if I will miss that high gear inch that the 42/11 rolled out.  I am from the old school when the standard CR was 48-38-28 with at 12-28 6 speed cassette, but I never road that in the actual mountains.

I finally sourced all the parts, but had to get an XTR shifter, due to availability.  I hope the pretty carbon parts hold up to my abuse.  First ride tomorrow, here are some pics of the parts old and new.

Out with the Old

In with the New and Uncluttered

Trio of Shimano goodies

Add in the Ablolute Black Oval Chain Ring

Shifter

Derailleur, Good in a clutch!

Big as my 160 brake rotor

The Oval Office

Hope it makes up for that low gear I will not have

All Shiny and ready to Rock

Doing this on the cheap meant using my perfectly good old 104 BCD XT 175mm crank.

I am running a SRAM 1190 chain, until it wares out, then will probably switch to KMC as they seem to take for ever to stretch out.

Dialed in the chain length and B tension and everything seems ready for a real world test.

I like the threaded chain ring bosses on the Absolute Black, time will tell if it holds up.  But I got to go back to steel bolts.  I used the long ones from the old granny ring.  I was using aluminum CR bolts and nuts so I could use an Allen wrench on both sides.  Mute point now.

The Derailleur cage is stiff with that clutch on, I have been drooling over that since I got my 9 speed shadow derailleur just before the clutch came out.  We will see if the clutch and the Narrow Wide CR actually keep the chain and reduce chain stay slap, on in the conditions that I ride in, rough and rigid.  That 11t is still really close to the chain stay.

I am so looking forward to not having a front derailleur.  I can now move up my rear wheel in the sliders and not drag rocks across a derailleur.  And of course you loose the weight, the shifting and the shifter. 

I took this opportunity to use a lock in to limit the inward movement of my grips.  Even wire tied they migrate in, I hope this solves this problem.  Lock ons are to thin in the cushion department and not work on my bars anyway.

Gudy's Rest Durango Colorado

Pretty cool Lolly pop, the handle starts from the Colorado trail TH just inside the San Juam National Forest with Dry Fork and Hoffheins as the loop.  Very nice, single track follows Junction Creek for a few miles and then up some serious switchbacks to Gudy's rest(which you get to go down on the way back).  Mostly climbing until you either go down Hoffheins to  an up Dry Fork or visa versa.  I did the former and the Dry forks descent was pretty fun and the climb back up Hoffheins was not to bad.  The description from Singletraks.com described it going other way and I saw several riders going that direction.  I will have to try it that way, but I like getting most of the climbing done in one chunk.  So climbing Dry Fork last would give a break in the climbing.  Judging form the going down Dry Fork, the climb up would be a doozy and the DH on Colorado Trail would have a lot of root drops that would feel like stairs.

Sandia Park Cibola National Forest.. Snow!

Albuquerque New Mexico was the last place I rode on our journey from Pisgah Forest North Carolina to Mesa Arizona, which had terrible WiFi, making uploading video impossible. 
A lot was going on with travel, new digs and job and all, so I am just getting to this now on a rainy day in Durango Colorado.

10,250 feet was, by far the highest elevation that I had ever ridden to.  The ride up was mostly in the sun and warmer than the 50 degree temps suggested.  Nice stiff climbing with some technical features that were a challenge as the climbing added up and the air thinned out, There were some spectacular view on the way up and at the top in the Scandia Peak Ski Area.  The descent was the polar opposite, pun intended, as I plunged, so did the temps, down to almost 28 degrees by the end as I chased the light.  As I started, I could see the shadow of the mountain meet the sunlit valley, but at each and every chance I got a glimpse of that line, it was receding, faster and faster.  I was descending in the snow shadow and at times the snow riding was tough or even required a little hike a bike.  Needless to say, my descent was not nearly as swift as anticipated, but my Bulldog fleece bib knickers and long sleeve jersey and jacket (carried to the top in anticipation of chilly descent) kept me warm until time ran out.  I exited the ski area and bombed the road back to the trail head, quickly exceeding my kit's insulating rating!  Nearing hypothermia, i made it back to the car with little light to spare, started the car and shed my wet clothes for dry ones, making it back alive one more time.

Route description: Climbing; Sulfur Springs, Faulty, Oso Corredor, Tree Spring, 10k, Golden Eagle. There was some snow before Golden Eagle, but it was sparse. Golden Eagle had alternating sections of snow and melt, both slowed me down. All of KOM was in the snow shadow and there was plenty of powering  through/walking on the uphill parts of the mostly DH,  down KOM and then it was getting dark, so finished on the road.

 View from the Top

Full Frontal for the Pups

Different angles

On the way up

Zoom Zoom

McDowell Mountain Park, McDowell Sonoran Preserve and Fountain HillsPreserve

This is McDowell Mountain Park, McDowell Sonoran Preserve and Fountain Hills Preserve, just east of Scottsdale, AZ. And there is plenty more to the north that I have not seen yet, This place is ginormous! This is my go to long ride area. Along with at least a few killer mountain passes there are miles of rolling desert trails and even a mile long trail that was mainly rock garden techy. Just found Paradise, that is the name of that tech trail. Been missing true tech, Although there is a tech climb at another park, but that is a killer. Killer views abound as well. Come on down I will show you around.
One of my favorite parts is this swooping section of the Sonoran trail, in the Fountain Hills Preserve. The entire trail is great, nice climbs and descents.  There are several tight switch backs that I have not mastered yet.

Shorter version with the hardest climb at the beginning instead of the end.