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White plug
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kiwi bantam
Taupo NZ
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December 29, 2018 - 4:26 am
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I have had my early D1 with a electric ignition out on a regular basis lately because its the xmas break and the weather is great, the old girl is running great, lots of pep probably as good as she has ever gone. When i got home out of curiousity i checked the plug which was white , im using a different 2t oil [ im away from home at the moment so i cant tell you the brand] could that be the problem , nothing else has changed as far as im aware.

All the best for the new year.

Neill

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Blue Heeler
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December 29, 2018 - 9:05 pm
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Hi Neill,

We used to joke(half seriously), that bikes always ran the best they`ve ever done, just before they go bang 😉

Where are you in relation to sea level?

I prefer a bit of tan on my plugs. Maybe try raising the slide needle one notch and see if the plug colours up a bit? Failing that, if she`s in a higher state of tune to standard, then try one main jet higher. Otherwise don`t see a problem unless you are using some odd fuel or there`s fuel starvation going on...some muck in the jet/tube/float level`s changed? 

Blue

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nickjaxe
Runcorn Cheshire UK
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December 30, 2018 - 12:06 am
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Its not right Neil...req further investigation.

My Bantam video              https://www.you.....jpOFmzRZRI

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kiwi bantam
Taupo NZ
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December 30, 2018 - 3:40 am
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Thanks Blue and Nick, i've had a bit investigation but i got a puncture before i could give her a good run, i'll let you know the out come.

Thanks again

N

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kiwi bantam
Taupo NZ
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December 30, 2018 - 3:43 am
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BTW Blue i'm in Taupo NZ on the central plateau so probably on the highest ground barring mountains etc.

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Blue Heeler
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December 30, 2018 - 2:31 pm
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Ah ok,356m(under 1/4 mile)elevation,not exactly thin air 🙂 We have to go out of England into Scotland or Wales to beat that height though,so I`m not qualified to comment on at what height a Bantam`s little lungs start to become compromised.

Yet to try NZ,must do so.

Hope you get your puncture done ok,are you going to be clever and do it without removing the wheel?

Blue

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johnsullivan
east sussex
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December 30, 2018 - 4:58 pm
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Ever been to Flash? I my d7 days over Pennines never noticed any difference because of altitude but definite changes with temperature.Worst was he combo of Flash and july 76 when my there was a falloff in power.

67 D10. and a D7    2007 Honda Hornet FA. Suzuki 89  DR 250S, Sinnis SC 125. 78 Honda 90  75 Montesa Cota 247

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Blue Heeler
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December 30, 2018 - 5:59 pm
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Rings a bell,I lived in "Owdam" for four years and spent a lot of time up on the Pennines.

Racers have complained about being down on engine power at high altitude tracks. Poor old Bantams don`t have much power to start with. I know I`ve noticed dramatically smoother and quicker running in damp/cold conditions with the denser air, on old bikes,`spose that`s why they inject water into some dragsters engines. 

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kiwi bantam
Taupo NZ
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January 4, 2019 - 7:51 pm
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The problem looks to have fixed itself, i took the carb off and tinkered with it but left it as is because i couldn't find anything wrong, so after i replaced the tube in my back wheel i took it for a good run of approx 20kms , the plug is showing a grey/ brown colour.

Thanks for your advice.

Neill

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