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fourex

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Posts posted by fourex
 
 
  1. On 8/19/2023 at 8:38 AM, lowside said:

     

    Thanks mate.

    I think they have been discontinued as I can't find them anywhere, even manufacturers site.  If thats true, I'm sure it's because someone devised a simpler workaround, but I'm at a loss as only just getting into this sport. :)

    Maybe the fast throttle is a good thing if it's limitable.  I'll have a ponder.

    Lowside, as I posted previously, I have one that is new/unused for $40 AUD if you decide that is what you want. I also have a Two or Three Trial used slow black tube for $10 AUD.  So $50 AUD + Postage from Australia to wherever, just saying.

  2. On 8/12/2023 at 4:24 AM, lowside said:

    When the stop is removed, does these revert to fast action, or slow?  The white tube suggests they are fast action, so I'm not sure about fitting one.  As a beginner I'd benefit and so would my lad, as we've had incidents of whisky throttle and whilst I'm OK, it knocked his confidence a bit.

    Can't find any info outside of what you posted and another store in Europe.  I thought maybe it would say on the box or something.

    Cheers

    Don't know for certain but Domino would be silly to confuse us between white/black tubes on their limited throttle, so my guess is "fast throttle".

    Buy their "limited" throttle and their "black" tube and you've got all bases covered in my opinion. 

    PS: Check photo, definitely fast white tube. 

    Domino Limited Throttle.jpg

    • Like 1
  3. 18 hours ago, mark r said:

    Hi, should the rear axle have a sleeve/spacer inside the hub between the wheel bearings and if so are the available any where or does any on know the size?

    Parts manual images attached for 1974 MAR mk2, don't know dimensions other than ridiculous 12mm internal diameter.

    Looking at the parts manual you need spacer tube #106659 and two aligning spacers #105604 for the rear wheel.

    Google those part numbers and see if anything pops up, best of luck.

     

    Rear Wheel from Parts Manual.jpg

    Rear Wheel from Parts Manual_0001.jpg

    • Like 1
  4. 29 minutes ago, Intotrials said:

    It seems the poster assumes that the front is tubeless like the rear. 

    Yes, It appears that way to me.

    DRM, pump your front tyre to something like 20 psi now, check it again in 24 hours. Figure it out from there. Simple like me.

    First time poster, we've probably been duped.

     

    • Like 2
  5. 9 hours ago, DRM said:

    I have a 2022 GasGas TXT Racing 300 and I am leaking air from the wheel lock on my front tire. I loosened the lock, cleaned it and re-inflated and it still leaks. Any suggestions?

    You can't be serious with a question like that, surely?

  6. 15 hours ago, slowrider said:

    Noticed most of the handle bars available are fat in the middle and wont fit my old style clamps Hmmm 

    Yes, modern Trials bike bars are fat in the middle (28.6mm) and don't have or need a cross brace.

    I just searched your previous posts and see you're possibly looking for bars for a Sherpa T, you need to look at 7/8" (22.2mm) bars for these older bikes that have standard top triple clamp.  Many different brands out there and they're all good as far as I'm concerned but, if you're looking at the Renthal website then look for 7/8" Trials bars, 742(4.5"), 660(5.0"), 735(5.5"), 768(6.0"). They all come with a cross brace.

    • Like 2
  7. On 11/4/2022 at 3:51 AM, Morganh said:

    Hi all,

     

    i recently bought a fantic 200 as restoration project but am having a hard time finding parts. Does anyone have any recomendations?

    There's no one-stop shop for anything for old bikes unfortunately, got to search the world, these are some sites I've found over the years for Fantic stuff,

    https://www.delaytrial.com/fantic/

    https://www.equipementmotard.com/moteur-minarelli-c-219_231.html

    https://bosisiomotori.it/it/99-trial-200-tx-350-1980

    https://www.facebook.com/groups/hardtofindtrialsandaircooledmono/

    https://www.ebay.com/sch/i.html?_nkw=fantic+trials&_pgn=1

     

  8. On 10/3/2022 at 7:58 AM, stephen m said:

    Thanks @fourex That’s what I’ve just started to do. I’m a bit concerned about keeping it square - but I’ll see how I get on 🙂 

    Just clamp a bolt of the appropriate size in your vice, set it up so just 1 mm or so of sleeve protrudes past the end of that bolt and slowly hand file, that's what I did from memory.

     

    • Like 1
  9. On 9/25/2022 at 3:41 AM, stephen m said:

    I have bought a pair of Betor Gas Aluminum Trial shocks and found the bush a little too wide to fit in my frame. 

    The bush feels like it’s in a spherical bearing so I’m not sure if they press out?  

    I emailed Betor and I’m not sure they knew what I was asking….

    It needs to be just 2mm narrower - so I could grind it down in situ, but if it comes out I’d prefer to do that. 

    Stephen

    I had the same issue with a pair of Magical shocks I bought years ago for my Fantic twinshock, they were 24mm spherical where I really just needed 21mm.

    I just ground 1.5mm off each end of the sleeve, easy enough and worked a treat.

    Both 21mm and 24mm are common sleeve widths.  Also, I think Magicals are glorified Betors, or something like that.

    • Like 1
  10. 1 hour ago, ColinPybus said:

    I think they had points originally, I've got nothing on the ignition side of the crank so refitting an electronic ignition would make more sense. Thanks for the info.

    Colin, my '74 MAR mk2 has electronic ignition standard, hence the question of others why they went to points in '75. Check out the Vape site, it looks like they can solve your problems, if not others will chime in.

    https://www.vape.eu/ossa

  11. 16 hours ago, carl ekblom said:

    May, I suggest you use a Lanyard Switch. I think it´s an essential safety device.

    Be aware that Apico and Jitsie have reverse  polarity of the magnets. So you can not exchange without problem

    carl, a lanyard kill switch is exactly what ken is trying to fit to his Sherpa.

  12. Yes, I believe it's the suffix, such as AS/BD/BS/CD/FD/RD that denotes whether it's got an air screw or fuel screw. Don't know which is what, other than BS being fuel screw.

    As far as "turps" is concerned, I'd stick with the original PHBH 26 BS, because we at least know what the original jetting specs were, and one can make minor changes from there if one doesn't like those settings.

  13. Original carb on Fantic 300 Twin Shock is Dellorto PHBH 26 BS.

    Refer attached, mine still runs very well on these original settings in Australia on 95 or 98 RON unleaded petrol.

    I've bought parts from these people with good success, www.dellorto.co.uk

    PS: Not an air screw on the PHBH 26 BS, but a fuel screw..

     

    Fantic 300 ORIGINAL Carb Settings.jpg

  14. On 2/18/2022 at 3:34 AM, slowrider said:

    Any recommendations for my 199B Sherpa? Just how important are the shocks in trials? Im an old slow fat guy.. 

    Ask this question in Bultaco Forum to get best answers.

    You will need a slender shock to avoid chain interference or at least a shock that can be inverted. What appear to be 1980's Gas Girlings in your original post in "Bultaco" have an overall spring diameter of roughly 50mm, some shocks such as magicals are 56/57mm. Falcon shocks are slender at 50/51mm, do some more research.

 
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