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About gazzaecowarrior

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    Advanced Member

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  • Bike
    Beta Evo 250

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  • Location
    United Kingdom
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  1. Well I took the bike out yesterday. With exactly the same fuel all day. First hour I ran the Br7es. Took it out to check it. Black dry carbonized plug. Then fitted the br6es and rode the bike for another hour. Removed the plug and once again black dry carbonized. Im going to try 0.25 turns out in the air screw next and see if that helps. Bike is running really well though. Maybe even adjust the needle to run leaner ?
  2. Thanks. I no longer compete so my riding consists of riding for no more than 5 mins at a time then stop for 5 then ride again and so on. It is typical low revs trials 1st and 2nd gear with blips of throttle. It will be interesting to see what difference 1 grade hotter plugs makes.
  3. Will fit a br6es then and try that. My plug is exactly like the plug in the photo where the heat range is too high. One step down on the plug with all other variables such as fuel and carb kept the same will be an interesting experiment.
  4. Surely hotter the plug leaving less carbon on the plug will ultimately effect and improve combination?
  5. I have tried everything to get my 2012 beta Evo 125 running well and I'm almost there. I'm just wondering if I need a hotter plug. My plug is always carbonised. It is dry black not oily wet. My previous evos all had perfect colour plugs and we're light tan whenever I checked them. Im now running 80:1 Castrol power 1 fully synthetic. Air screw is 2.5 turns out. Exhaust and silencer fully decarbonized, carb standard setting and air filter spotless. I run 99 octane petrol. My current plug is a ngk Br7es. I understand the higher the number the colder the plug with ngk. So I'm tempted to drop to br6es. I'm in the UK so it's seldom warm. Does anybody think a hotter plug will help it burn better and not carbonize ?
  6. Thanks for the informative response. I can see the benefits of reversing the bushes too now that you have mentioned it. I will do that the next time I pull them apart. It really was a fiddly little job.
  7. Just spent a few hours stripping down swing arm, suspension and linkages to regrease. All bearings looked fine so used a good quality grease and reassembled. I was just wondering if it matters what orientation the bushes have to go back. Obviously one side is longer than the other. I'm pretty sure I put them all back with the wide sided bush on the outside and thinner bush on the inside. Would it matter if I have got them the other way round. I only noticed they should go back in a certain way when I looked at the beta parts diagram today. I would rather not have to take it all apart again to check if it doesn't matter.
  8. Update for anybody interested. Took the bike out yesterday. First time out since exhaust decoked and silencer repacked. Running on 80:1. I reset the air screw too and altered the idle screw to what sounded best to my limited hearing. What a difference. Loads more power and the increased revs on an incline have all but disappeared. It must have been so choked up. Although I ordered new float and throttle cable I haven't fitted them yet as the bike seems to be running so sweetly. Thanks for everybody's input.
  9. I've just ordered a new float, float valve and throttle cable. I think it's worth a punt to sort it out !!
  10. Im going to re-examine the floats again this weekend. I will check them as described in picture 2 of that link rather than picture 3 as I did. It's worth a look.
  11. Thanks for the oil info. I may lean mine out. Just mixed 5 litres at 50:1 with some in bike already so I will measure out remaining fuel in can and recalculate. Although I agree there should always be some play in the throttle cable. I can't see how not having it would affect the revs on an incline. The geometry of the bike is not being altered and nothing is being pressed or squeezed. Even when on a paddack stand and I manipulate the incline the revs increase. The cable looks standard into a standard beta throttle housing. However for the sake of £15 it is well worth trying a new throttle cable. I will measure out my cable when I remove carb to do float check and compare length to new one.
  12. No there is zero play on my cable. Revs do not increase however whatever position my handlebar is put in on either side of the opposite locks. No adjustments are possible to loosen and increase throttle cable play as all adjusters on throttle, cable and carb are round right in. No I don't pull throttle to seat it before starting. I will try it though thanks. Any opinion on Castrol power 1 racing fuel mix ratio ? Container says no leaner than 50:1.
  13. Thanks for the info. I meant parallel not horizontal. However I had also set my floats like picture 3 rather than 2. Could be worth a look. Thanks
  14. It happens when in neutral. I don't tend to notice it when I'm riding. I had been using putolene strawberry but had been recommended the Castrol so I thought I'd give it a go.
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