The Montesa Cota 4RT Thread

Discussion in 'Trials' started by Johnnyboxer, Apr 2, 2010.

  1. Beavis353

    Beavis353 Adventurer

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    I’m not sure, but I did some rear wheel shopping last year. The fancy 300 rear wheel is about a grand. I got a new full 260 wheel for $450 without sprocket/rotor or hardware from Honda. A Deal really. It is SO nice having a spare wheel to keep a sharp tire on for competition.
  2. FeetUp

    FeetUp n00b

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    The front wheel is $750.00 and rear wheel is $1110.00
  3. 2whlrcr

    2whlrcr gooligan

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    There's a reason the bike cost $11k.
  4. nwcycle

    nwcycle Long timer

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    Well I have a spare set with X11s ( Or without ) if anyone is interested...... Brand new :)
  5. lineaway

    lineaway Long timer

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    At 2000 dollars for wheels we should have bought without them with all the spares laying around. That would have been a deal.:rofl
  6. laser17

    laser17 Long timer

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    I was looking at several bikes all lined up and found it interesting that the 300 rear wheel goes to the trouble and expense to machine the spoke flange to save weight (like the other top line bikes) but still uses the XL version of the spoke turnbuckles. Are the thin turnbuckles a source of failure?
  7. lineaway

    lineaway Long timer

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    ) Montesa used the 3 part spoke for a long time. (1993?) And yes they were a weak link.
  8. SportSawyer

    SportSawyer 4RT Herder

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    The DID Montesa wheels on the 2014 and later Repsol and 300RR use the larger rear nipples, but they are aluminum. The spokes on those wheels (DID based 2014+, and including the 2010 Japanese RTL260F) also use a fine thread on the spokes and nipples. The Morad based wheels on the 2014+ standard 4RT260 use a course thread and steel rear nipples. All the 2005 to 2013 4RT wheels had DID rims and used the course thread and steel rear nipples, but the spokes and nipples have different part numbers than the Morad wheels.
  9. trailrider383

    trailrider383 867-5309

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    Oil strainer screen direction? I didn't notice a difference when I first pulled it out and now I see one side the screen is flush with the rubber ring and the other side the screen is down from the edge of the rubber ring forming a bowl. The manual says "Note the direction of the screen." Well I didn't note the difference quick enough. :D My educated guess is bowl side up and flat side down. Although I don't think it would matter either way.

    Edit: The rubber ring is also tapered. Thin end goes in first. Thick end seals against side cover. So that part is obvious.
  10. lineaway

    lineaway Long timer

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    I hope you paid attention with the oil filter.
  11. trailrider383

    trailrider383 867-5309

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    Yes I did. The oil filter direction is obvious. And it tells you which way is correct in the manual. And it is also stamped on the filter. And it is the same as my 450's that i have been working on since 2005.
  12. lineaway

    lineaway Long timer

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    I have seen it happen.
  13. LowPSI

    LowPSI Been here awhile

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    Wayyyy back in the 90's when Montesa used Akront rims too much FLEX was a problem and this led to some broken spokes.. When they switched to DID and Morad rims the problem disappeared.
  14. lineaway

    lineaway Long timer

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    I do not care what rim you have, a 3 piece spoke is a pain in the ass. Ever since going back to the true tubeless rim, I have spent more time on spokes. The morad rims with the rubber band and normal spokes was by far easier in normal riding.
  15. Beavis353

    Beavis353 Adventurer

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    They’re here.

    Attached Files:

    Grooster and jonnyc21 like this.
  16. Trialsguy

    Trialsguy Been here awhile

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    Anyone know what the actual needle bearing and seal sizes are for the rear suspension dog bone are ? My Google-foo isn't pulling up anything past the typical All Balls AB27-1166 kits on sites. Just lining up my winter tinkering projects in the garage and I can feel some play in the linkage.

    I'd be interested to know the costs if I was to walk in to a typical bearing supply shop and ask for "needle bearing xxx-yyy , and seal numbers aaa-bbb".
  17. trailrider383

    trailrider383 867-5309

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  18. ramz

    ramz Professional Trail Rider

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    There is an Australian web site that has many manuals, in English, for the 4Ride, 4RT, and 300RR.

    http://montesatrials.com.au/store/category/model/


    There are two errors.

    The box/link in the 2nd row, 1st column labelled 'COTA 4RT 2017' actually shows older Montesa models. 2T models.

    The box/link in the 2nd row, 2nd column labelled 'COTA 4RT 2016' actually shows 2015 files.

    The box/link in the 1st row, 3rd column labelled 'Montesa 2016 Owner and Parts Manuals' correctly shows 2016 files.
    ----------------

    After I downloaded the files I was interested in keeping, I renamed the files using a more systematic naming scheme.
    yyyy4RT name
    yyyy300RR name
    yyyy4Ride name

    where yyyy is 2009 thru 2017 as appropriate

    name is as follows
    OwnersManual
    PartsList
    FullPowerKit
    RaceReplicaKit
    HeadlightKit

    and so on.


    Suggestion: download one manual, rename the file, then open the file to see if everything looks ok.

    Then download all the manuals you want.
    Then rename them all.
    Then open each one to verify they are what you want.

    Goes pretty quickly.

    :ricky
  19. Trialsguy

    Trialsguy Been here awhile

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    Excellent links... and found exactly what I'm after.

    Needle bearing size = 15x21x12
    Seal = 15x21x3

    Local bearing supply house has the bearings for $6 each and $3 for the seals.


    Thanks.
  20. lineaway

    lineaway Long timer

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    And if it is not a full compliment bearings you will be doing it again next summer.