Shimano Ultegra 6700 shifter repair/rebuild

Wheels of Happiness

I used to have these shifters:    6700 and 6800.   I never had difficulty with these shifters.  But this is a guide in case something turns out bad.  It turns out with ridgid training one can do this.  One needs good memory and good spatial logic

Do not try this.  Let the mechanic do this repair.

Conversion of ball bearing to sealed bearing in a Deore hub

Wheels of Happiness

I have been thinking of converting from ball bearing (as is often with Shimano hubs) to sealed bearing.  They say it is longer lasting, less prone to bearings getting loose, and getting grit, and affected by water causing their early failure.

The sealed bearing number is RS 6000.

The challenge are with the axle.  4 options:

1.  A anew axle with stopper for bearing (that should fit RS 6000

2.  Put nuts inside the old shimano inside as bearing guide and stopper.

3.  Put a tube shim inside;

4.  Do nothing with the axle.  Just hand tighten the outside cones.

What do you think?   Choose 1 or 4.

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Why investing in Japanese GS is a good and wise decision

Wheels of Happiness

Rizal Philippines

5.28.2021

I encountered several riders who bought cheap MTBS with funny sounding GS and several weeks after, the shifter dont work anymore:  the front shifters are busted.

Early on this post invested in top of the  line GS - Shimano XT and  while they were cheap then, they are expensive now.  They work well, do not wear out soon enough and are trustworthy.  Shifts still remain sharp and fast.   I am glad this post did.  

Increasing menu of options for the MTB drive train.

Wheels of Happiness

Rizal Philippines

4.24.2021.

It used to be just Shimano:   derailleurs, chain, cogs, chain ring,  rear derrailleur and changer.  

Shimano dominated this for a hundred years.  But now, China manufacturers are coming on their own and have their own more competitive products.  

Cogs:      Shimano, SRAM, shuriken (by weapon),  Sagmit.   ZTTO, Sunrace

Changer:   LTWOO, Shimano, SRAM (There are bad ones like Shimaneng0

Chainring:   Shimano, SRAM, Deckas Snail.

Chain:   Shimano, SRAM, PYC, VG, YBN  The most expensive is YBN LDC.

The battle is heaviest in Cogs.

      Most of the entrants are in the 1,500 to 2,000 - Shuriken, Sunrace, Sunshine,  ZTTO, ZRACE.  They are lightweight and claim superior technology.  (Like SRAM many of the owners are Chinese and factory based in Taiwan)   They claim sets carved out from solid SS blocks (as SRAM) and srengthen the rivets on the spider.   

      Right now, I wonder what I would install to replace my aging XT cogs:   (11 -36 to make this 11 -42)

    1.  SAGMIT

    2.  Shiruken

    3.  Shimano (about P9,000)

    4.   Z race

     I am even thinking that the one selling me P1,800 XT is a SAGMIT or sunshine brand with the XT lock.   

Completing repair on the rear hub of XT GS at Mosso

Wheels of Happiness

Rizal Philippines

4.10.2021

The 5 year old plus Mosso is showing signs of aging.  The rear hub has some play and some sounds being generated.  I regreased and replaced the ball bearings.  However, there are scores on the cones block.  It need  replacement.   

There are several options:

      1.  Buy a non Shimano hub (but I cant use the expensive ice rotor -   Shimano has the only centerl                   lock system for Ice Tech disc

      2.  Buy another Shimano XT but mine is 24 holes and straight pull.  Cant find similar spare

      3.  Buy a cone set or repair kit:

          1. I inquired from Quiapo, local store    no reply

          2. Saw a cone only post, but that is good for 1/4 ball bearing  mine is 3/16  -  I consulted the                       mechanic

Finally I found this but its gonna cost me.   

Shimano XT M8000 replacement parts rear

SHIMANO XT M775 M785 M8000 wheel hub hub base axle ball gear block repair parts

Product details of SHIMANO XT M775 M785 M8000 wheel hub hub base axle ball gear block repair parts

• Shimano XT original repair parts, only suitable for XT quick release hubs, not suitableOther models and barrel axle versions, M775/M785/M8000 quick release version hub repair parts are universal (the 775 series has a little difference in the shape of the outer nut of the rear left axle block),
• The left and right front hub and the left rear hubThe sealing covers on both sides are the same.
• The repair parts are all brand new authentic licensed products.There are only 13 balls on the right side of the rear hub, 20 balls in a bag, too lazy to remove it, it’s not expensive.
• The ball Y26J98030 with cage is suitable for the left and right sides of the front hub and the left side of the rear hub.
• Made in Malaysia.
• SHIMANO XT M775 M785 M8000 wheel hub hub base axle ball gear block repair parts

Shimano XT original repair parts, only suitable for XT quick release hubs, not suitableOther models and barrel axle versions, M775/M785/M8000 quick release version hub repair parts are universal (the 775 series has a little difference in the shape of the outer nut of the rear left axle block),

The left and right front hub and the left rear hubThe sealing covers on both sides are the same.

The repair parts are all brand new authentic licensed products.There are only 13 balls on the right side of the rear hub, 20 balls in a bag, too lazy to remove it, it’s not expensive.

The ball Y26J98030 with cage is suitable for the left and right sides of the front hub and the left side of the rear hub.

Made in Malaysia.

Mas mura 1658 only

Final adjustment of the Shimano XT hub?

Wheels of Happiness

Rizal Philippines

4.03.2021

I am about to buy a new  rear XT hub (BN) or buy from Lazada (but unfortunately its the front being sold) just to get over my difficulty in the rough rotation of the rear wheel.   I have spent about 2 weeks trying to figure out myself how to get this right.  

It all started when I overhauled the rear hub.  I might have missed some steps.

My problem is:   if I adjust the preload too tight, the wheel wont turn freely;   if I adjust the tighetining nut by 90%  (or quarter) then the wheel plays laterally.   

I planned to go to a super mechanic to get this right.   But before doing that:

    1.  I consulted again Google how to do the disassembly and assembly

    2.  I disassembled the hub again  -  found out:

                1.  That some of the bearings  fell off the races;

                2.   The cone at the non drive side had scores on the surface

                3.   That the bearing  cover on the drive side were not properly pressed in

                       hence the drive side cone cant be tightened well by 2 to 3 threads, and hence

                       there was no correct tightening and loosening

   3.  So I reinstalled and regreased the bearings

        Pressed the bearing cover;   regreased the non drive side;

   4.  Refitted the cones,, and followed the advice of loosening again the nut by 3 to 6 minutes

This time, the wheels spun freely even if I tightened the locking nut full.

And so I can smile again and not go to the mechanic anymore

My bike is teaching me a lot on mechanics, patience and analysis.   

        

Guide to Group Set Weights

Wheels of Happiness

Rizal Philippines
March 4, 2018

Ever wondered why there is certain heaviness at the rear of your bike. It may be due to the GS:  the  crankset, the cogs, chain, the RD and the brakes.  Here is the  guide for  the GS weights:   you may spend more for the high end, but  saving weight makes for more  efficient pedalling, more watts for your forward motion, less tiring on your  part.

From Bikelane - Group set component weights.


Thus, Campy and SRA groupsets are generally across the board lighter than Shimano.  There is less weight variance among Campy GS,  big variance among SRAM GS and Shimano.

Thus for Shimano:    6800 is lighter  than 5800 by mere  91 grams;  Durace 9000 is lighter  than 6800 by whopping 409 grams!    Thus 5800 is  heavier than Durace by almost 1/2 kg!

For Campy:  Super Rekord is lighter  than Rekord by mere 99 grams,  Record  is lightervs Chorus by  only 81 grams

Across group set:  for the lightest:

          Durace                                 1,998 grams

         Super record                         1,940 grams (  58 grams)

         SRAM Red bb 30                1,741  grams  (257)   maselan for BB 30 frameset only

         SRAM GXP (standard)       1,845 grams   (153) grams

     

Weight comparison between Ultegra 6700 and 6800 mere 35 grams difference (lighter)

Weight comparison: Ultegra 6700 vs Ultegra 6800

	Ultegra 6700	Ultegra 6800
Chainset/BB	791g	765g (-26g)
STI Levers	447g	425g (-22g)
Rear Derailleur	189g	195g (+6g)
Front Derailleur	89g	89g
Brake Calipers	317g	335g (+18g)
Chain	267g	253g (-14g)
Cassette	209g	212g (+3g)
Total	2309g	2274g (-35g)

Comparison between RS 8000 and Ultegra 6800   -->   RS 8000 is actually heavier  (even vs Ultegra 6700)?

Weight comparison among 105, 6700 and  6800

Looking at buying a 2015 model Giant Defy Advanced, with either 105 5800 or Ultegra 6800 group-set. Did a bit of research on the group-set weights;

                      Ultegra 6700                Ultegra 6800                105 5800        Ultegra 8000
Chainset         791g                            765g                            736g                 674g
STI Levers      447g                            425g                            486g                438g
Rear Drlr         189g                           195g                             234g               200g  
Frnt Drlr            89g                             89g                               89g               106g
Brke Calipers   317g                           335g                            378g               360g
Chain               267g                           253g                            253g               253g
Cassette           209g                           212g                           269g               232g
Total                 2309g                         2274g                        2445g               2263

Ultegra 8000 is lighter vs  6800 by only 9 grams, and 6700 by  46 grams;   am I glad I got a 6700 for my Bianchi

Comparison of weight of groupsets for the weighty weenies

Wheels of Happiness

Rizal Philippines
January 29,2017

                                            Magaan subalit mahal   mga P140,000 php Red 22

I compiled a list of the weight  of the groupsets. I am repeating that if you want to a have light bike (a light bike translates into an efficient and sometimes fast bike)  If you must upgrade, its not only the looks or the brand but consider  the weight:(cost to weight ratio)

        1.    Frame sets

          Not all carbon frames are light review of a carbon frame circa 2011 showed a carbon built bike
          weighing 8kg +.  The Bianchi of some of RBP are said to be tipping the scales at 8.5 kg.  Some alum
          bikes by Cannondale, Giant Merida are light.

     2.  Wheelsets

         Typical wheelsets weigh over 2 kg.  Some more expensive branded weigh over 1.85 kg, those over
         P15,000 tip the scales at 1.7 kg.   Most carbon frames are 1.5 kg.   The branded ones are at 1.5kg.
         Am Cla came out with 1.4+ kg alum wheelsets.  The 350 and 420.   Light bikes.   Even Ursu, the
         Italian company have wheelsets weighing in at 1.6 kg.  But they have beautiful wheels   Aero wheelsets
         are expensive but their wind cheating features are what you pay for.  at 30+ kph, your ability to cut
         through the air is what counts, not the weight.

         Orig 450 carbon wheelset weighs 1,500 grams. SRP is at P30 k.

       Novatec Jetfly (which I bought) weighs 1,435 gtrams making my Freccia really sub 8 kg alum bike.

       Some Italian carbon fiber wheelsets weigh 1,300 grams and cost over P130K.

   3.  Group sets:    Component Weight Comparison from Total Cycling

        There are three major manufacturers:  Shimano, Campagnolo and SRAM. Their average weight is
        2 kg;   Shimano group sets are heavier, Campy is lighter than Shimano, and SRAM is the lightest.
        SRAM was the first with SRAM red 22 to be sub 2 kg.  (1.7kg)

        Weight comparison

        1. Shimano                                                                     PHL price

           105                               2.498 grams                         P18,000

           Ultegra 6800 8000        2,294 grams                           30,000

           Durace   9000               1,998 grams                           64,000

Too much DIY can create problems; if you are not careful

Wheels of Happiness

Rizal Philippines
June 5, 2017

I could not use my Fuji carbon fiber well lately.  It would not shift well between 21 to 23  and 12, 13 and 14 at the cogs.

I found out today:

1. That the  nut for the cogs was not tight  (the tool that I used Taiwan made does not fit well the Campy cogs.) Fortunately today, I found the Shimano tool that fit;

2.  I used the wrong spacers:   between 21 and 23, it had to the wider spacer with the groove;  I saw that the distance between 21 and 23.  The correct spacer was between 12 and 13, both would not shift well.  

Compared to Shimano, even if you interchange the spacer, there would be no problem

So I had the spacers interchanged, tightened the nut.

Tomorrow, I could use the bike well?

Advantage of the the Shimano SPD 5800 105 pedal

Wheels of Happiness

Rizal Philippines
October 27, 2015

Hi welcome to Jorgeusbiker blog. I have not been posting here very often. I post the short notes at FB Jorgeusbiker Pages.

I will write about the SPD 5800 105 pedal I bought from Sean Sisik.  Aside from being light, the advantage that I saw are:

1.  It is wide and therefore less taxing for the shoes and legs when pedalling,

2.  There is much wider clearance between the pedal and the crank, hence there is no rubbing between the shoes and the crank.  The rubbing results in:   ugly shades of crank paint on the shoes and vice versa.  I think I had a good buy although I dud not bargain hard enough with Sean kasi student.

The matter with cleats

Real Cyclists

Angono, Rizal  PHL     | July 7, 2013

My Shimano cleats on Scott carbon cycling shoes has gone kaput and has begged for replacement. I had it temporarily replaced with hard plastic Exustar (which works well only with Exustar pedals). 

Some observations on Shimano cleats:

l. Its price has gone up from P500.00 a pair to P680.00 as per my canvass in bikeshops last Wednesday in Cainta.

2.  While it is  one of the best:  easy to engage and disengage, it seems to wear out easily if you walk too much with your biking shoes on.

3.  My conversation with others showed that the left cleats usually fail:  it gets misaligned or breaks.;  not the right cleats.  Why.  Because when you ride you engage first your right shoe then followed by the left shoe.   As you engage the left shoe and you are not looking or as you pedal, the shoe and cleats hit the wrong places and and wears out.  (Perhaps engage the left shoe first)

4. You have to clean it regularly especially after walking through sand, soil or grass.  Dirt can fill the gaps in the cleans and can make this malfunction.

5. Oil or put Armor all so that the cleats can slide in and out of the pedal easily.

6.  Tighten, or check the screws before every ride;  they can turn loose and the cleats may malfunction

Christmas Gift for Me by Me - A Scott Carbon Fiber Biking Shoes

Bike for Health

After hearing from Armin that he got Giro carbon fiber biking shoes at Velocity  in Cartimar for only P6,500, I went today to Cartimar after slipping away from the School Christmas party in Makati City. There was large price differential between cash and credit card (It is P6,900 card price) { Hmm DTI might get a wind of this and call for them}, almost 10% so I said I will come back for it when I have the cash. (I saw that Giro and Bell carbon fiber helmet were P8 to 9t;  spyder is only P3t)

However, on the way home, I passed by Julie at Christy's and asked for their carbon fiber biking shoes and showed me her Shimano and Scott biking shoes.  The Scott shoes were lower.  She gave me for P4,770, the carbon fiber shoes and the Shimano cleats.  Wow.

So I carded it and I my biking feet will say goodbye to Boy Pepsi's very worn SDI shoes.  But Boy Pepsi's shoes, in fairness, were sturdy, entry level shoes.  Mine is 3 years old. I bought it for only Plt at John Wilkes in Marikina City. Thanks Mr. Boy Pepsi. I met him personally while on a bike ride to Jalajala. Dapat mag carbon fiber ka na rin at gumamit ng new materials.  Laban tayo sir.

Christy's Number:   +632-551-2828.  Contacts:   Julie, Honey or Lanie.  I hope this does not drive their sales to the roof.

Really, our prices of bikes and its accessories here are very affordable and competitive

Electric Shifters from You Tube

Have bike, we will help save the earth...

Shimano Durace D12 First Ride



Shimano Ultegra Dl2 prototype




Dura Ace Vs Ultegra D12



Shimano Electric Shifter at Trek Madone



Q Rings (old concept with Shimano Triplets)



Campagnolo Electric Shifters



Campagnolo Electric Shifter prototype

Jorgeusbiker Shared this SlideShare presentation: on Shimano

Greetings,,  Jorgeusbiker has suggested the following SlideShare presentation on Shimano for recyclists_20l0 member and friends.it is not an endorsement for Shimano, but FYI.. "I think you will find this presentation useful." 2007 1st Place… 2007 1st Place - National University of Singapore View presentation Want more from SlideShare? Go Pro To change email settings on SlideShare, login to your account or contact SlideShare support for help.