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Pinned So what have you done to your bike today?

Discussion in 'The Pub' started by kiffsta, Nov 3, 2013.

  1. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    For the rear you can buy sprocket blanks and just machine the holes. That is how we use to do it in the olden days.
     
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  2. Andych

    Andych Well-Known Member Premium Member

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    Problem is I can’t get a 428 pitch front sprocket to suit the SRX250.
    If I could get one at 17T that would eliminate all the issues but I can’t seem to find one.

    Maybe I will have a look at the blanks as well.


    Sent from my iPhone using Tapatalk Pro
     
  3. Andych

    Andych Well-Known Member Premium Member

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    After downloading the JT catalogue and searching through it, I came up with a combination that will work for me.
    The standard geared SRX250 51Y (which is the gearbox I have) uses 14/43 520 sprocket & chain.
    As mine will be a 350 it will be able to handle slightly higher gearing so I can go with a 14/41 520 sprocket & chain combo.
    The rear sprocket is a JTR846.41 in steel from the UK. I have a front sprocket in really good condition which is a 14T 520.
    Not sure what I would do if the front sprocket is no good as they are out of production.. I guess someone somewhere would make them.. Thanks for the direction to head in with the rear sprocket @my67xr
     
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  4. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    There's still quite a a few around Andy, even a few 15T's (my XT250 use's the same front sprocket's)
    here's a new JT 520 14T for the 51Y for $34 inc delivery ex UK
    thttps://www.ebay.com.au/itm/JT-14-Tooth-Front-Sprocket-Yamaha-SRX250-N-T-CT-1987-JTF155314/282314572759?hash=item41bb4283d7:g:uA4AAOSwA3dYbPjd:rk:10:pf:0

    A Whites 520 14T sprocket here for the 51Y for $24 inc delivery from Victoria
    https://www.ebay.com.au/itm/NEW-SPR...h=item23a7ca5022:g:b-UAAOSwIn5bcqGt:rk:1:pf:0

    Or this 'high level' 14T 520 sprocket for the 51Y for $31.50 inc delivery ex UK
    https://www.ebay.com.au/itm/For-Yam...h=item1a1bf99c1b:g:K6QAAOSwmLlX2~no:rk:5:pf:0

    JT 15T 520 sprocket
    https://www.ebay.com.au/itm/Yamaha-...h=item5d5f65846b:g:dM0AAOSwsFtZ5FYv:rk:8:pf:0

    There's a lot of rear sprocket's there, some are $30-$35 inc delivery, starting around 37T
    https://www.ebay.com.au/sch/i.html?...sc=0&_osacat=0&_odkw=JTR846.41&LH_TitleDesc=0
     
  5. Andych

    Andych Well-Known Member Premium Member

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    Yep, lots of choice for 14 and 15 tooth for 520 chain but nothing I could find for 428.
    I have loaded all the info on Standard 51Y, 3WP and what I want to use with my rear tyre etc into Gear Commander and it looks like 14/41 will work the best


    Sent from my iPhone using Tapatalk Pro
     
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  6. Qimbo

    Qimbo Active Member

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    Took the carbies out, set a bucket under them and followed Murdo’s instructions. All carbies bled half a litre or so of petrol, a constant drip in all four. Since I got them on the bench I took the bowls out, checked the floats, they look ok and the bowl was free of gunk or else. Put everything together, sounds better and performs a bit better but still wants to stall once I’ve revved it up properly.

    I’m running out of ideas....
     
  7. Murdo

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

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    A drip is not enough, should have a continious stream like a little boy piddling from the bowls. What about the flow from the tap?
     
  8. Andych

    Andych Well-Known Member Premium Member

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    Unlike an older man struggling with skirts or a dribble. Not that I would know of course.


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  9. Qimbo

    Qimbo Active Member

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    Hahaha ok ok, I get the metaphor!

    Yea, it’s a constant dribble, not drops. Also steady flow from the tank. Next thing, vacuum valve which, other than cleaning it and looking at the external appearance of it, I don’t think I can test if it’s OK in anyway, can I?
     
  10. Wozza

    Wozza Active Member Premium Member Contributing Member

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    yeah suck on the hose connected to the valve and put your tongue in the end of the hose to hold pressure, if it lets go its leaking if it holds onto your tongue its fine
     
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  11. kiffsta

    kiffsta Administrator Staff Member Dirty Wheel Club Contributing Member

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    I picked up a 1973 triumph trident 750 As part of a job lot of bikes I bought. It looked okay, but there are a few things that need sorting such as having the wrong switch block fitted and an incorrect master cylinder. It wasn’t seized but hadn’t run in 18 months. The key was missing so I removed the barrel and had one cut by a locksmith.

    I checked the oil and it looked brand new , I then opened the pet cocks and set about starting it , I kicked and kicked until I was hot and sweaty, I then cursed the British motor industry and walked away quite sullen. After 10 mins of thinking long and hard about why it would t run, I checked for spark, yep that worked , so I checked the fuel , it was a horrible yellow colour , so I drained the tank and drained the bowls and did a quick run to the servo and bought some fresh fuel . Here is my first start video

    How bad is that fuel ?

    So here she is , a running t150 trident

    4BCD215C-DA0B-4525-AF1D-3D9E0D436E76.jpeg 74DA8352-6C1D-4C1D-AEDF-4A765E460E38.jpeg 8772FE38-E939-4D51-9D6C-C4C3F9575666.jpeg 764E3D40-8B79-4052-9701-C05D4AE9752F.jpeg








    My leg is killing me
     
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  12. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Sounds like it is running on two cylinders. My brother had one of those, I used to tune it for him. Points suck, everyone used to fit Boyer ignitions in the day.
     
  13. kiffsta

    kiffsta Administrator Staff Member Dirty Wheel Club Contributing Member

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    Luckily this one has electronic ignition , it is off to a bike shop next week for a tune by someone who knows a bit more about them than me, I’m stoked it now runs, it was a gamble buying it as a non runner
     
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  14. Qimbo

    Qimbo Active Member

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    Ok, it took me a while to understand the hose you were talking about and it does as you say.

    The mistery continues...
     
  15. Wozza

    Wozza Active Member Premium Member Contributing Member

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  16. kiffsta

    kiffsta Administrator Staff Member Dirty Wheel Club Contributing Member

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    You were correct , one of the caps on the coil was loose , I pressed it down and now she sounds a heap better. Prior to finding that, I was kicking her like no ones business with limited success and now I think I have strained or tore my calf muscle.
     
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  17. Frankster

    Frankster See the World before you leave it Staff Member Premium Member Ride and Events Crew

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    If it's unbelievable pain and you're walking like a gimp, you've torn it...ouch. ***** of a things take forever to heal.
     
  18. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

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    Its just the new age latte set growing up with electric starters .... I warned him about the kicker :lolsign:


    How to Do it
    First and foremost, when kicking, follow through. Kick mechanisms in general have a free spot at the bottom of the kick stroke. Always follow through with the kick stroke to the bottom and wait for the engine to cycle through to prevent a kickback. A kickback on a high-compression large engine can throw you over the handlebars or kill your shins. If you start to bring the kicker up, while the engine spins over or backfires, this could engage the gears and throw the kicker upward, causing injury.

    When first using the kick starter, get a feel for when the gear teeth mate to each other. This is done by firmly pushing down on the kick arm, and not it's necessary to push the kick arm all the way through. Once you have engaged the kick gears, never let the pressure off of the kick arm. Even slightly letting the pressure off of the kick arm could release the ratchet mechanism causing the gear teeth to slide past each other and the kick arm could fall through. Also, you should not kick repeatably as this could also have the same result—pause after every failed attempt at cranking.

    how-to-kickstart-a-motorcycle.jpg


    https://www.rideapart.com/articles/254762/how-to-kickstart-a-motorcycle/
     
  19. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    And remember to start your kick just past TDC, i learnt that from my old 1982 XR500
     
    Last edited: Oct 21, 2018
  20. kiffsta

    kiffsta Administrator Staff Member Dirty Wheel Club Contributing Member

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    I swear to god I followed this to the letter , half way through a kick , I felt a massive pain in my calf , yes I am entitled, I want electric start, give me a CB750 any day :)

    on a brighter note, she sounds bloody mean now she is running on 3 .



    Lucky my daughter has a heat pack,

    EF5761E2-2E90-4E95-B7EA-AD9010F8CDF4.jpeg
     
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    Last edited: Oct 21, 2018

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