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Major Modification Advice - The Build

Started by LeonJr. · · Last activity · 7 posts · 327 views

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Cycling Equipment
Published
26 May 2024
Last activity
13 November 2024
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LeonJr.
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  1. Well, here we go. I fell off for a bit. However, I have begun my (re)build in earnest.

    1970s vintage 27" 2x6 12-speed Nishiki Sport Road Bike

    [FONT=times new roman]Upgrade Update.[/FONT]

    - 700c wheels, tires and tubes installed. Brake calipers only needed pad adjustment, not caliper replacement.
    - Installed 11-speed cassette on Bucklos wheels. No added stress to fork. It slipped in as though I were reinstalling the original wheel.
    - Shifting worked with original (LD251) front and rear derailleurs and shifters, until I tried to use the larger crank sprocket in the lowest (36T) gear. There was not enough chain. The lower sprocket cage on the rear derailleur kept striking spokes intermittently when in the lowest gear (on the smaller crank sprocket).
    - I noticed a small part on the rear derailleur was broken. Realized that it was time to go to school.
    - After reading some articles on derailleurs, I went to the Bezos Behemoth and prepared an (unexeuted) order for Shimano Deore M5100 shifters and derailleurs. I will likely execute the order late next week.

    [FONT=georgia]Side Note:[/FONT]
    What am I learning? I am learning that trying to avoid failure or error is an errant but perfect path to failure. There are organic reasons for my risk-aversion and why at 63 (64 on Bastille Day), I am making these discoveries about myself. It is a long story to be shared if one of us crosses the pond and engages in a leisurely ride together. I am learning that by moving forward, I may be suprised by what I discover. I thought I would certainly have to change the brakes and use a smaller cassette. By advancing I discovered neither to be true.

    [FONT=times new roman]Now, back to the project. [/FONT]
    I realize that the Shimano Deore line is a mountain bike line. Should I redo my order for a road-bike-specific set of shifters and derailleurs? As you can see, on this part of the project, the shifters and derailleurs, I am maintaining manufacturer integrity. I learned the importance of this in my crash study on derailleurs.

    And that will be all for now. I will continue to keep you updated.

    [FONT=courier new]Join Me on a Voyage to the Heart and Mind of God[/FONT]

  2. I have received the shifters and rear derailleur. I did not order the front derailleur. If I need it, I will. The problem is that the front derailleur is not as readily available as the other parts.

  3. Almost Done!

    Yes, I am making steady progress. It is a little longer than I thought, but I am learning a lot more than I ever thought I would about cycling.

    I have been out riding a few times. The first times out I learned that the Essex County (NJ, USA) Parks Commission prohibits cyclists on the paved walking paths. This excludes many of the best visual locations to bike. On the other hand some parks do have paths that meet the allowance requirement of being paved and made for vehicles, whether vehicles are allowed on them or not.

    Handlebar Angle & Seat Height
    I also learned that at some point, someone had readjusted my handlebars and seat to painfully and dangerously awkward positions. There is a long story that involves my Bride giving away what she thought was her bike, which she had already done at least a year before at the time. To be honest, I forgot, too, because I spent hours looking for it (disorganized shed). I started developing Cyclists Palsy. The seat height made the bike unwieldy. Perhaps he (Jerome) had given this bike to a taller friend, because Jerome is no more than 66" (1.7m). I am 69" (1.8m). Yet, the seat was adjusted so high that I could barely lean into steering without nearly faling over. The drop handlebar was angled in such a way that the cables out of the break levers were angled between 45 and 60 degrees to the ground. That produced a braking angle for my wrist of about the same as the brake lever cables. After 12 miles of riding, OUCH! Back to "school" for education on cycling ergonomics. I actually changed from the Dia-Compe original handles to a pair of Shimano Deore. I researched how to get the correct angle and height on the seat, brake handles and handlebars.

    Branch Brook Park, in Newark New Jersey, the internationally known crowning jewel of the Essex County Park system has a cycling-friendly path that is made for pedestrians and cyclists. I went to put in some miles and found the need for more work. I did not ride that day, except to check to see if my "roadside" adjustments resolved the issues I was experiencing. They did not. It was a beautiful day in a beautiful place. Once it got dark, I packed it up and went home. The good thing about this outing was that I also found that I had made the correct adjustments to the bars, handles and seat. The bike felt much more manageable.

    Pre-forum/Pre-Research Cassette Purchase
    The main problem was that I could not shift into all 11 gears. Either the lowest or highest couple of gears would be omitted. I took it home, and there realized that a website where I learned so much about drive trains was wrong on one point, well at least wrong if you use anything from VG. I had bought a VG 11-speed cassette before I did my research. Since I did not know much about VG, I decided to keep the rest of the drive train under the Shimano banner. I learned an important word in my drive train research, "index". I did not understand how it applied to bicycle parts until now. I realized that the index is the degree of movement from one gear to the other. The article that gave me the most and best guidance said that chains and cassettes can be mixed and matched, but not derailleurs and gearshift levers. The good news was that most brands are of compatible indices throughout most of their variety range. What I learned on inspection of how things were working was that the VG cassette index is not compatible with that of the Shimano Deore, so it was back to the house that Jeff buit again.

    Pre-forum/Pre-Research Chain Purchase+Original Crankset
    I go out for a test run after replacing the VG with a Shimano Deore cassette. The rear derailleur and cassette are excellent together. The bicycle is not only manageable now. It now feels like an extension of my body. This is how it felt before my hiatus. I got the derailleur to engage all 11 gears. Now we move to the front derailleur. It would not shift to the high sprocket. Now, if I wanted only 11 speeds, this would be fine. Leaving it this way would beg the question, why embark upon this journey and give up a gear range!?! Back in the lab, I got the derailleur, by only adjusting the front derailleur high and low screws to change to both high and low. Yay! I had 22 speeds!!! Well, not really. Remember, this was originally a 12-speed (2x6) rig. The lowest gear on the 6-speed hub was maybe half the size of that on the 11-speed cassette. In the lowest gear or two with the original crankset, a number of things happened. The non-Shimano chain was stretched fully. Only one sprocket on the rear derailleur was engaged. Resistance and friction were increased to destructive levels. As i type I await the delivery of a replacement Shimano Diore crankset that is made for 10 to 11 speed Deore cassettes. I expect delivery on Tuesday, 5 November, 2024. I also ordered the appropriate bottom barrel. As they say, it is better to have it and not need it, than need it and not have it. Returns are easy and free.

    Stay tuned.

  4. LeonJr. said:


    I have received the shifters and rear derailleur. I did not order the front derailleur. If I need it, I will. The problem is that the front derailleur is not as readily available as the other parts.


    On July 4, 2024, I ordered a replacement for the original front derailleur with Shimano 105 FD-R7000-L 11-Speed Front Derailleur. It was installed almost immediately once received.

  5. I got the bottom barrel and crankset. I had to return the bottom barrel.

    My shell is threaded. The bb I ordered was push-on. I received and installed the correct bottom barrel and the crankset.

    At the beginning of the project, I bought the "CYCLISTS" 23-piece tool set. It was immensely helpful. Until tonight. While closing the "Quick-Link", the chain-link pliers broke. Now I await delivery of a PARK TOOLS tool. I also degraded the kit and the tool on Amazon.

  6. Bought a small indoor rack. It was delivered yesterday (11/12/24).
    Received the replacement chain tool.
    Went to work on the drive train.
    Resized the chain.
    Attempted to adjust shift cable at the shifter - may be damage; replacement ordered. Due tomorrow (11/14).
    Attempted to adjust front derailleur; set screw bent; Ordered replacement. Due tomorrow.

  7. Bought a small indoor rack. It was delivered yesterday (11/12/24). So much better and safer than upside down. Upside down may have messed up something. Read on
    Received the replacement chain tool.
    Went to work on the drive train.
    Resized the chain.
    Attempted to adjust shift cable at the shifter - may be damaged; replacement adjuster assembly ordered. Due tomorrow (11/14).
    Attempted to adjust front derailleur; set screw bent; Ordered replacement (M4x6mm - 30mmx270 pcs@USD $7.88 Due tomorrow.

    I was looking for the "official" front derailleur adjustment screws. All were advertised as M4 x length. For two, the price was consistently just under USD $10. I was just about to pull the trigger on one of these, until I finally got it. LOOK FOR M4 X LENGTH screws!!!

    For my fellow seasoned citizens, I guess I had my V8 moment.

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