Manitou fork service

Wheels of Happiness

Additional video on Manitou Fork Service😊

Trying to learn more about bike repairs

Wheels of Happiness

I have taken great interest in the following:

1.  Converting from ball bearings to sealed bearing.  I have Shimano hub  which is a candidate.  This involves. removing the cup by hammering this off.   Removing the bearings, and then pressing the bearing at the non drive side.    (Press fit or gentle tap).  Then measuring on the drive side.    And then putting the axle and the bearing.  Tap    Then reinstalling the nuts.  The bearing could be 6000 RS, or 6902 (depending on the hub diameter, and axle OD

2.  The manitou fork.   My manitou fork and the one that was shown by YT (in Spanish) are the same,

     Steps:

    1.  Remove the wheel

    2.  Remove the brakes for the fork

    3.  Remove the bottom fasteners.  

        1.  For the right (spring side with the admustment)  remove the blue adjuster with a 2 mm hex.  Then

             using a 8 mm hex loosen by turning to the right.

        2.  For the left side, loosen the bottom fastener.  using a 12 mm socket or  combination

        3.  Let the oil drip

        4.  You can now  renive tge stanchion

  4.  For the right leg:

      Loosen the plastic yellow stopper using 24 mm open wrench

      1.  Remove the two shafts inside:   Remember the order.   Clean wipe, adn grease the spring

      2  Reattach

 5. For the left leg, 

     Two conflicting versions

    1.  Remove air

    2.  Remove the top cup 

    3.  Clean and regrease

    4.  Remove the sponge and soak in oil

    5  Replace

6.  Inject 10 -15 ml of fork oil (15W)

7.  Replace the 12 mm nut at the left side, tighten the right side using the 8 mm hex by turning to the left.

 8.  Reattach the blue adjuster using 2 mm hex

   

Making MTBs lighter

Wheels of Happiness

Rizal Philippines

3.25.2021

Lately my interest has been to lighten the two MTBs that I have because of the difficulty I had in the reverse Laguna Loop - the MTB could be heavy.  I estimate that the Mosso is 13 kg  (28.6 lbs  and the Ti bike is 12 kg or less.   Most of the MTB alum would be about 14 -15 kg, and the steel ones about 16 - 18 kgs.  

My option is to buy a Chinese carbon fiber bike with Shimano drive train M5100 whose estimated weight is  11.8 kg  (25.96 lbs   The good light weight would be between 24 to 28 lbs)

I reviewed vids and articles on how I can reduce the weight of MTB   The largest gain could be made on wheelsets, frame and fork

                                                

Weight of MTB parts

                                                                                       Weight shaved

Wheels                 Go tubeless  -       save 200 grams  each wheel                                400 grams

                             Use Conti  or  Maxxis Crossmark  300 grans eac                            600 grams

Group set             Go one by                                                                                         500 grans

Change fork         Bolany                                                                                          1,300 grams

                             Rigid fork                                                                                     2,000 grams

Carbon fiber frame                                                                                                   1,000 grams

Light cogs                                                                                                                   300 grams

Estimated weight reduction                                                                                      2,800 grams

                               If you go carbon fiber                                                                3,800 grams   

Added cost:

                          Wheels      P1,200 x 2                             P2,400

                          Fork                                                          5,000

                          Cogs                                                         3,000

                          One by                                                  14,000

                          Frame                                                    27,000

                                Total                                               51,400

                                    

Percentage of total weight…Component…Weight
18.49%…Wheel (rear)…4 pounds, 7.5 ounces
15.11%…Wheel (front)…3 pounds, 10.4 ounces
14.85%…Fork…3 pounds, 9.4 ounces
11.38%…Frame triangle…2 pounds, 12 ounces
4.6%…Swingarm…1 pound, 1.8 ounces
4.45%…Crankarm (right) …1 pound, 1.2 ounces
2.97%…Pedals (pair…11.5 ounces
2.48%…Chain…9.6 ounces
2.38%…Brake (rear) …9.2 ounces
2.17%…Seatpost…8.4 ounces
2.17%…Shock…8.4 ounces
1.99%…Brake (front) …7.7 ounces
1.94%…Saddle…7.5 ounces
1.86%…Crankarm (left)…7.2 ounces
1.78%…Derailleur (rear)…6.9 ounces
1.60%…Handlebar (with plugs)…6.2 ounces
1.35%…Derailleur (front) …5.2 ounces
1.11%…Swinglink…4.3 ounces
1.06%…Stem…4.1 ounces
1.06%…Shifter (front…4.1 ounces
.98%…Shifter (rear)…3.8 ounces
.83%…Bottom bracket…3.2 ounces
.80%…Seatstay (right)…3.1 ounces
.80%…SeatStay (left)…3.1 ounces
.59%…Headset…2.3 ounces
.39%…Derailleur Cable/House (rear)…1.5 ounces
.21%…Derailleur Cable/House (front)…0.8 ounces
.18%…Seatpost clamp…0.7 ounces
.18%…Grips (pair)…0.7 ounces
.16%…Derailleur hanger…0.6 ounces
.05%…Derailleur cable guide…0.2 ounces
Total bike weight: 24 pounds, 3 ounces.

So you must strive to reduce weight of wheels which is 33%of the total bike weight

And the fork which is14.85% of total weight

If  I were to choose:

1.  I will buy lighter tires   spokes nipple and rim                                           500 grams

2.  Buy Bolany   or rigid fork                                                                       1,300 grams  

3.  Go one by                                                                                                   500 grams

                                           Total                                                                2,300 grams

                                           In lbs                                                               5.06 lbs

                                          From 12.7 kg to                                               10.4 kg   =  22.8 lbs

3.                                                                

                                                                                                                                     

Installation of headset using forks with carbon steerer

Wheels of Happiness

Rizal Philippines
February 11, 2017

Using flower or star fangled nut in the steerer fork made of carbon is not an option. You have to use an aluminium compression bung costing about P500.00++ to do the job.  Here is how to install or remove it: