Showing posts with label SunTour Symmetric Shifters. Show all posts
Showing posts with label SunTour Symmetric Shifters. Show all posts

Sunday, June 16, 2019

I should 've stood in Bed

With apologies to Bugs Bunny on Saturday maybe I should've stood in bed.  I was going to do so many bike things.....



It started off well enough wrapping the bars on the Cresta GT one side done, right...


Wrong.  I fell victim to one of the classic blunders which, besides not getting into a land war in Asia, is when wrapping bars check your work early and often and certainly before you tape up at the end! Sigh.  So hearing the voices of my parents in my head, Any job worth doing is worth doing right, I unwrapped the whole thing and started anew, this time remembering to check -visually and by feel that the wrap was even and had no gaps.


Ok bars wrapped, lets go for a ride, after all I just got my brakes adjusted so its all good...right?


I'd only gone a few miles when I noticed an odd sound during braking, so I stopped and saw the above (adult language) not the result I was looking for.  I limped home, left it for a day so I could find my zen.




These vintage Dia Compe canti's have a hex nut one one side so you can loosen it to make the pad adjustments and a hex head on the other side which allows for..


The step I didn't do last week (edit coming to that post) which is to use an allen wrench on one side and a box end wrench on the other to get the brake post very SNUG so it doesn't rotate like it did for me.  I thought I had them all tight last time but I went and did the both end snug trick on all four pads.  I hope this is the end of the Canti saga.



The good news is that I rode the Novara after work twice last week and even tackled the hill I had avoided the week before and conquered it.  The bad news is the front shifter was acting up and needed attention.  They do provide a workstand in the bike lock up which is nice but there is no clamp so its tough to much actual wrenching and I also remembered how many little parts the Symmetric shifters had so the bike got a ride home.


I soon realized that even with a proper stand I needed the shifters off the bike to really work on them.  I did this reluctantly because dealing with mounting the clamp for the shifters before had been a real PIA but I removed the cables and forged ahead.  Even with the diagram and multiple attempts I could not get the front shifter secured to the shifter body without a lot of lateral play,  I finally removed a washer and it kind of worked but I had no faith it would hold up and my patience had run its course with the Symmetric shifters.


Ebay provided a pair of banded Suntour power shifters like the ones on the Moto_GT, I would have liked to get them from Bikeworks but I would have had to wait a week to go and there is no guarantee they would have any, and by then the Ebay ones should arrive.  Hopefully the Novara will be back up and running next weekend.  The Symmetrics are boxed an ready to go to a bike forums member for the cost of shipping.



Ok it wasn't all bad, I got the Ibex sold to a nice lady who also has a Bianchi road bike but wanted something to haul kid trailers and take camping.  I rode the Moto_GT to deposit my haul but held back enough to treat myself to an IPA at C&P to celebrate.

Ride. Don't let the turkeys get you down. Smile. Repeat.

Wednesday, March 27, 2019

Novara Randonee: Drive train and brakes


The Allez wheelset gave me hope of 7 speeds on the Randonee but the 7 speed FW on the stock wheel shows (above) no real clearance for the smallest cog, so I eneded up ordering the 6 speed version of the Shimano Tourney Mega-range FW.



For comparison the TZ30 on the left being the 6 speed and the TZ31 the 7 speed model...


the key measurement was the shorter height of the 6 speed FW which I hoped would allow for more clearance.



And it did add more clearance so I should be able to run the chain without issue and I even had room for the pie plate (spoke protector).   I will probably add a spacer to the rack bolt to bring it in a bit since it sticks out toward where the chain will run.



I was sad the new dual pivot brakes weren't going to work out for the initial build but I got the stock brakes cleaned up, lubed and put on new brake pads so they could get mounted.  Since they are running with the stock wheels there should be no issues.  Note the rear brake has the cable guide arm coming off the drive side where the Tektro dual pivot arm came off the non drive side. so the spacers I added to the rack strut and now superfluous.




Like the brakes the derailleurs got a sonic bath, then I lubed the pivot points with 3 in 1 oil an mounted them up.




I was curious/concerned about whether the stock RD could handle a 34 tooth cog so I went to the web and the website Disraeli Gears gave the answer - the GT version of the Cyclone II can handle 34 teeth at the maximum so it should work, and if not there is always the Shimano 9 speed Deore LX in the parts bin.


I also got the shifters mounted, due to the time crunch on this project and being a bit intimidated I didn't fully take apart the shifters, based on what I have read there are lots of pieces for this shift system and I couldn't find a good exploded diagram to guide me.  I just took out the left screw that holds shifter on and then did a thorough WD 40 flush let if dry, and to finish dribbled in 3 in 1 oil for lube.  Getting  the band the center bolt screws into back on was a bit of a bear but I got it done.  I will know if it is all working well when I get the bike back together.


EDIT


Searching bike forums I found an exploded diagram so down the road I could take the shifters apart with some hope of reassembly.





Along with the 6 speed FW I ordered a new helmet, the Specialized helmet I was wearing when I crashed looks fine but I don't trust the Styrofoam will do the same job in any subsequent crashes.  I read somewhere a few years back that all bike helmets pass the same safety regulations so the fancy Giro helmet that cost 5 times what the Bell helmet does isn't actually any safer.  I ordered a generic Basecamp helmet and frankly I do like the fit and finish better on my Specialized but the new helmet does have a built in rear light so that is nice and it hasn't been crashed.


If all goes well I will travel to Portland on Sunday to get the Cresta's fork bent back into shape.  Fingers crossed.  In the meantime I hope to get allot done on the Randonee so I will have a touring bike with a nice low gear back in the stable to ride in the Tour De Lopez.



Ride. Smile. Repeat.