1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Project Linkins 3LN6 - The Pink Lady

Discussion in 'Your 250cc Projects' started by Linkin, Sep 6, 2015.

  1. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

    Messages:
    5,103
    Likes Received:
    3,472
    Trophy Points:
    1,148
    Joined:
    Dec 23, 2012
    Gender:
    Male
    Location:
    Thailand
    Home Page:
    My Bike:
    Yamaha FZR400 3TJ1, Honda MC22
    I'd keep the old hoses as templates in case any one else wants braided lines for their Fizzers. "Linkin's Braided Line kits". :)
     
    • Like Like x 2
    • Agree Agree x 1
  2. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,732
    Likes Received:
    2,874
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    FZR250R 3LN6
    IMG_5504.jpeg IMG_5505.jpeg


    Today I tackled the fork preload spacers. I calculated that I still had 35mm of initial preload with the aftermarket adjustable caps. Advice from suspensions r us (YSS Australia. very helpful guys, Adam is great I can't thank him enough) was to reduce to 8-10mm of initial preload.

    I did all the measuring and decided on 5mm of initial preload, as I can always add more with the adjustable caps, and I didn't want to have to pull the spacers again. This meant I cut an additional 30mm off the spacers. Cleaned them up and made sure my cuts were flat and reinstalled.

    Before I was getting very little static sag and not enough rider sag. Now I am good on both static and rider sag (40mm for rider sag) and have 80mm total travel under heavy braking. Assuming standard 120mm of travel (I think the FZR's are slightly less at 116mm or thereabouts), I am bang on the money.

    After my trip last week the bike, I added an additional 10 clicks of rebound damping on the shock to prevent me from getting bucked out of the seat over large bumps as happened before. As for the seat, it's rock hard and needs new foam and covering.

    Getting it hot and angry last week seems to have solved the cold flooding it was doing. Still going to replace that last float needle when they are in stock again.

    Anyway, I rode the bike again this afternoon and it now feels and handles like an FZR should. Raising the forks 10mm was a good move.

    So final specs on the forks:

    YSS FZR400 (1990) 7.5N fork springs
    YSS FZR400 (1990) PD valves, 1 turn of preload on them (out of box at 3)
    Motel 10w fork oil, height at 130mm, fully compressed, bled, and spring/pd valve absent for setting oil height.
    Two alloy washers added to seat the PD Valves properly (adding approx 2mm to overall internal height)
    16mm + 30mm (46mm total)cut off the standard spacers to accomodate aftermarket preload caps (along with removing the washers that usually sit between the spring and standard cap), resulting in 5mm of initial preload.
    Forks raised 10mm in the clamps.


    Rear shock is a YSS MZ366 Monoshock for TZR250 3MA with top mount changed to 38mm, 70-75Kg spring, 5 turns of added preload and at least 10 turns of rebound damping added. Will edit with full amount when at home.
     
    • Like Like x 2
    • Love it! Love it! x 1
  3. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

    Messages:
    3,230
    Likes Received:
    1,416
    Trophy Points:
    918
    Joined:
    Oct 1, 2013
    Gender:
    Male
    Location:
    Narrabeen, NSW Australia
    My Bike:
    Yamaha FZR250 3LN1
    It's a shame that you can't ride the Old Pacific Hwy without risk of getting pinged nowadays, I would love to know how it handles some of it's high speed bends with the suspension sorted
     
    • Like Like x 2
  4. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,732
    Likes Received:
    2,874
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    FZR250R 3LN6
    I just heard recently that some sections of the old road are dropping from 80km/h to 70km/h

    I haven't been through there in years due to the high dickhead count and constant harassment by HWP.

    Same deal with national park.

    I should try going out west for once.

    I did really enjoy Snowy Mountain why, Tawonga gap road, Omeo hwy on the ZXR all down near Tumbarumba in a big loop. 700k's in a day.

    I should get down to Macquarie Pass again, last time I went up the pass was on the ZXR and I cooked the shoddy voltage regulator :)
     
    • Like Like x 1
  5. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

    Messages:
    3,230
    Likes Received:
    1,416
    Trophy Points:
    918
    Joined:
    Oct 1, 2013
    Gender:
    Male
    Location:
    Narrabeen, NSW Australia
    My Bike:
    Yamaha FZR250 3LN1
    Years ago when I was working in a shop that sold action cameras a customer came in, we got to chatting and he told me about a road up north, up into some hills, said the Police leave it alone and that there was a guy there on a VFR800 that ruled the place, quickest through there of anyone and enjoyed going through there challenging people - I never got a chance to get up there and now for the life of me cannot remember the name of the place
     
    • Like Like x 1
    Last edited: Feb 27, 2024
  6. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

    Messages:
    3,990
    Likes Received:
    2,213
    Trophy Points:
    923
    Joined:
    Nov 19, 2013
    Gender:
    Male
    Occupation:
    Gardener
    Location:
    Tasmania
    Home Page:
    My Bike:
    Spada, VT250F & ZX2R
    Does the rider still weigh 59KG?
     
    • Like Like x 1
    • Funny Funny x 1
  7. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,732
    Likes Received:
    2,874
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    FZR250R 3LN6
    He is a little over 60kg these days :)
     
    • Like Like x 1
    • Funny Funny x 1
  8. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,732
    Likes Received:
    2,874
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    FZR250R 3LN6
    I just checked. Closer to 65kg. :oops:

    I took the bike for another longer ride to the north side of the city again this evening. Much much improved feel and handling overall. You know when your front end is harsh and you brace yourself for incoming shock of potholes, road plates, etc? No longer a problem. Much more relaxed riding.

    Raising the forks 10mm feels perfect as well. She tips in very well. The front tyre has more heat in it now based on my very scientific way of assessing temperature by touching the tyres and comparing.

    Definitely needed that rebound adjustment on the rear as well. She is on the firmer side of things for road use, but this will be a good setting for nice roads (if we have any left) and track days. Resisting the urge to book one in and go before I get the bike completely sorted.

    The last of the bits I've ordered are all on the way, including genuine manifolds, caliper and master cylinder kits, and the other little bits and pieces.
     
    • Like Like x 1
    • Nice Work Nice Work x 1
  9. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

    Messages:
    3,990
    Likes Received:
    2,213
    Trophy Points:
    923
    Joined:
    Nov 19, 2013
    Gender:
    Male
    Occupation:
    Gardener
    Location:
    Tasmania
    Home Page:
    My Bike:
    Spada, VT250F & ZX2R
    All jokes aside, I'm really glad to see you get this bike up and running again. There are so many bikes that could use someone with your level of commitment to get them running and to get the best out of them. Well done Adrian.
     
    • Agree Agree x 3
    • Like Like x 1
    Last edited: Feb 29, 2024
  10. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,732
    Likes Received:
    2,874
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    FZR250R 3LN6
    Today I overhauled the whole front brake system. I will let the pictures do most of the talking because I'm beat from doing the work. Calipers got a go in the ultrasonic, then threebond soak, then tiny wire wheel for the seal recesses. M/C overhaul, made up some new lines from the Venhill kit, bled up and stickered :)

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
    • Nice Work Nice Work x 2
  11. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,732
    Likes Received:
    2,874
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    FZR250R 3LN6
    Simple, clean, and on the way :)

    Carbon Schmarbon, stainless steel is where its' at.

    Had trouble finding anything in Australia, but this is a Dan Moto system from LCI Parts via Japan. Found them on Yahoo Auctions and went directly to their website.

    [​IMG]
     
    • Like Like x 2
  12. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

    Messages:
    6,398
    Likes Received:
    4,786
    Trophy Points:
    1,148
    Joined:
    May 4, 2013
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Tamworth, NSW
    My Bike:
    1937 Royal Enfield 250, CF Moto 250 V5, Honda's XL250, CBR250, FT500 plus a few others.
    • Like Like x 1
    • Agree Agree x 1
    • Informative Informative x 1
  13. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,732
    Likes Received:
    2,874
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    FZR250R 3LN6
    Manifolds arrived and got stuck in doing them plus balance again. 2.5 turns on the mixtures. I appear to have both air jets and passages completely blocked on #1 carb. #1 exhaust is also colder than the rest, won't instantly boil off soapy water. I attempted my best to unblock them in situ but unsure if it has taken.

    Old manifolds are toast. OEM replacements fitted.

    IMG_5548.jpeg IMG_5549.jpeg IMG_5550.jpeg IMG_5551.jpeg
    IMG_5552.jpeg
     
    • Like Like x 1
  14. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,732
    Likes Received:
    2,874
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    FZR250R 3LN6
  15. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

    Messages:
    3,230
    Likes Received:
    1,416
    Trophy Points:
    918
    Joined:
    Oct 1, 2013
    Gender:
    Male
    Location:
    Narrabeen, NSW Australia
    My Bike:
    Yamaha FZR250 3LN1
    Can I ask a favour, could you please keep those cracked OEM manifolds for me if you're going to bin them
     
  16. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,732
    Likes Received:
    2,874
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    FZR250R 3LN6
    No problem.

    I also have two new sets of aftermarket ones if you want those too, I don't need them now.
     
  17. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

    Messages:
    3,230
    Likes Received:
    1,416
    Trophy Points:
    918
    Joined:
    Oct 1, 2013
    Gender:
    Male
    Location:
    Narrabeen, NSW Australia
    My Bike:
    Yamaha FZR250 3LN1
    Thank you - Give the aftermarket ones to souls that need them, it's the aluminium in the cracked rubber ones, with it removed that interests me - I wouldn't take to destroying good ones for what I'm planning
     
    • Like Like x 1
  18. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,732
    Likes Received:
    2,874
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    FZR250R 3LN6
    Rear brake system done... No photos this time, sorry.

    Rear caliper - I was able to pop the pistons out with compressed air this time. Because someone had already removed the dust seals. That's a good trick but it doesn't fix the corrosion in the seal recesses. Ultrasonic'd the bodies, wirewheeled the recesses and light go over the bores with scotchbrite pad. Reassembled with rubber grease and with no problems.

    Rear master cylinder - supplied kit was incorrect. So please note, All Balls kit 18-1003 does NOT fit the 3LN rear master cylinder. At least I was able to replace the circlip and dust boot :prankster:

    Gotta live the Aussie bike parts industry... by the way, many major parts retailers list the same kit. It's wrong. All the 3LN's use the same master cylinder part number.

    Ordered front & rear kits at the same time, front kit came from the UK and was correct, and arrived before the rear kit, which was ordered from Aus, arrived later, and was incorrect.

    There are exceptions, Motorcycle Spares Warehouse has always been very good for me. I ordered a speedo cable and another float needle Friday night and they arrived today from Melbourne.

    As for the rear line, I made one up but only had 90 degree fittings left for the banjo to line fitting, which are not ideal. The line points sideways off the master cylinder, and faces straight up from the caliper. Luckily I didn't have to invert the caliper or anything to bleed it properly.
     
    • Like Like x 2
  19. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,732
    Likes Received:
    2,874
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    FZR250R 3LN6
    New toy arrived today :D

    I'd very much love to keep the baffle out as it sounds lovely, but it will attract the wrong kind of attention.

    With the baffle in, sounds a little better than the standard one, but about the same noise level.

    You can see what I had to do with the rear brake line in pic #2 because I ran out of fittings.

    [​IMG]

    [​IMG]
     
    • Like Like x 1
    • Nice Work Nice Work x 1
    • Looks good! Looks good! x 1
  20. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,732
    Likes Received:
    2,874
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    FZR250R 3LN6


     
    • Like Like x 2

Share This Page