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Project Yamaha SRX 250 Cafe Racer

Discussion in 'Your 250cc Projects' started by Andych, Oct 9, 2016.

  1. Andych

    Andych Well-Known Member Premium Member

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    Lots more checking.. it now seems that the difference between the SRX4 / 6 and the FZR250 fork pitch is 10mm.
    Not that it makes a lot of difference in the grand scheme of things.
    The Front axle is the same diameter (same wheel bearings), no doubt the hub on the SRX wheel is wider but that is easy to resolve.
    I will need a new front axle as at 5mm it may have been possible to use the original FZR item but 10mm is too much and I have sourced the correct item and it is exactly 10mm longer than the FZR250.
    Going this way may hold up the front end a little.. but I have other work I can get on with while I wait for some stuff to come from Japan.
     
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  2. Andych

    Andych Well-Known Member Premium Member

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    While looking to clean up my wheels prior to getting new bearings tires etc and managed to get one front discs off without too much issue and got all Bar 1 bolt out of the other side.
    My 1/2” rattle gun with fully charged 5 amp / hr battery wouldn’t budge it. So got my little gas torch out and heated it, let it cool and heated it again to try and break the gallon of loctite but no joy. The only thing that let go was Allen key spinning in the bolt.
    So looks like a drill it out job.
    I have LH drills coming but I don’t know if they will work on this. It will probably be a drill and tap job, possibly helicoil. I will have to see what it looks like when the disc comes off.
    I need to get a 2nd stage tap anyway to clean out all the left over loctite in the good holes.
    And here I was thinking the rims were going to be relatively easy as they look to be in good condition.


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  3. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Bummer. Try a thread chaser first as taps usually end up removing metal.
     
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  4. Andych

    Andych Well-Known Member Premium Member

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    Yep, first priority is to drill the head off so the disc can come off.
    This bike is fighting me at times.


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  5. Andych

    Andych Well-Known Member Premium Member

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    I am also trying to get reasonable tyres for the SRX.
    Given it isn’t in the same performance league as the FZR what would be General consensus on tyre brand / pattern?
    Sizes are 90/80-17 front and 100/80-17 rear.
    I am running FZR250 3 LN rims and I think the rear is 1/2” wider than the std SRX250 3WP.
    Is something like a Battleaxe better than Sport Demon?
    Open to all suggestions
    Well most suggestions.


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  6. GreyImport

    GreyImport Administrator Staff Member The Big Cheese Contributing Member

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    We have run battlax and sport demons on the FZRs here and they are fine .... I think actually I have one of each on mine ATM :)

    Stock tyres for 3LNs are

    3LN tyre size.png
     
  7. Andych

    Andych Well-Known Member Premium Member

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    Hmmm quite different to the stock SRX250 3WP.
    The rear is a lot wider. Might not suit the little SRX but the FZR size is easier to get hold of by the looks of it.



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  8. Linkin

    Linkin The Apprentice Premium Member Dirty Wheel Club Contributing Member

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    Sport demons are cross ply and rather stiff. I would suggest a radial tyre. Michelin pilot street radicals are good, I had a set on my zeal.
     
  9. Andych

    Andych Well-Known Member Premium Member

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    Hmm the Street Pilots are no doubt good but a bit expensive as well.. I wont be keeping this bike once its finished.. well not for long so a super comfy tyres isnt high on the priority list.. Has anyone used the Pirelli CiTy Angels?
    They are well priced over Sport Demons..
     
  10. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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  11. Andych

    Andych Well-Known Member Premium Member

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    CiTy Angels are $94.50 Front same size as above with the rear at $149.00 so there isnt a lot in it..
     
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  12. Andych

    Andych Well-Known Member Premium Member

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    Hmmm New Disc bolts are rather expensive.. Seriously.. $77 for 15 Titanium bolts.. problem is SS are even dearer..
    Are these damned things anything special other than being M8 x 25mm 1.25mm pitch dome head capscrews?
     
  13. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Usually about $3 is what I expect to pay for those.
     
  14. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Last edited: Aug 28, 2018
  15. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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  16. Andych

    Andych Well-Known Member Premium Member

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    Cool, I appreciate that. I will have to look at the listings because those 10 are the last ones. I need 15 so I will do that in the morning.


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  17. Andych

    Andych Well-Known Member Premium Member

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    When you look closely they are not too much different in price after all.
    Apart from the Pommy ones with Loctite. They are a bit expensive.
    I wonder if there is a thread lock compound that is also an anti galling product?




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  18. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    No. I suggest this
    Loctite_LB8009.jpg
    and keep an eye on them. Ti galls like nothing else.
     
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  19. Andych

    Andych Well-Known Member Premium Member

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    So I shouldnt do them up with the Rattle Gun :)
     
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  20. Andych

    Andych Well-Known Member Premium Member

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    Did a little bit today as I wanted to get the other disc off so I can sort out that stuck bolt and figure out what I am doing with the color.

    I also slotted the reassembled FZR monoshock in and mounted the rear master cylinder.
    I need to get a couple of dome head bolts for the rear master cylinder and have the other half paint the Brembo name and logo onto it in white.
    Hopefully my SR6 stem and lower bridge will turn up tomorrow so I can move on with the front end.
    I also ordered these from the UK. In the end they were all within A$4.00 of each other.

    4032b9c6ec3b496d67e23177f33e3093.png

    1d83ecdcfa2e792c3c24ce7a07d4628b.jpg

    67468cadb56fba6be3f9b50c5974d4d2.jpg

    d2e5382ce14827ba7971133502b39ac9.jpg


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