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Old 01-16-2013, 04:58 PM   #1
Platinumgrit OP
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Carburettored bike through the Alps?

Anyone had experience riding a carb'd sports bike from sea level to high altitude like the Alps? I was contemplating a bike which is carby fed but, someone's just told me I will need to change jetting / carb settings when I get to high altitude or the bike will run like crap, have no power, stall, foul plugs, be a pig, etc.

Is this true?

The bike in question I'm thinking of taking is a 2000 R1. The last thing I want to be doing is buggerising around cluelessly with not just 1 or 2, but *4* carbs, and then finding out it runs like crap when I get back to London.
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Old 01-16-2013, 08:09 PM   #2
rasmukri
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my bike has a carburetor and i have no problem going from sea level to high altitude. i have ridden at 9,000ft and sea level and everywhere in between and never had a problem with my carburetor acting up once i had it dyno jetted at about 3,000ft and i haven't changed a jet since.. i have a 2001 harley dyna and it has the 44mm CV carb and i have heard that the vacuum slide in it helps alleviate the problems that one may encounter at high elevation.
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Old 01-16-2013, 08:16 PM   #3
V Saarela
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Have never problem when riding at alps with motorcycles. Maybe the fuelconsumtion is higher?(more throttle)

It doesn¨t have to be a carburator. I´ve heard that goldwing 1800 with fuelinjection dont like the hights. My moped, Vision 50 cc with fuelinjection protest already at 1000 metres and at Grossglockner and Stelvio I have few times to get of and push.
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Old 01-17-2013, 08:07 PM   #4
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thanks guys, most appreciated. I live in Australia, and we really don't have very high mountains. Well, not compared to the Alps anyway. I just wanted to check and make sure.
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Old 01-18-2013, 02:21 AM   #5
Aj Mick
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Just by way of confirming the experience of others.... I had an early '80s Honda CB 250 RS for several years when I was working in England in the mid '90s. It had a carburettor, as did most bikes back then.

I used it to travel over much of the British Isles, and had a couple of trips through Central Europe. I spent quite a bit of time in the Alps.... as you do.

The only maintenance I did was the routine oil changes and such like. I never had a problem with the engine...... and never once touched the carburettor.
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Old 01-18-2013, 02:35 AM   #6
olionel
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I had some problems on my ZXR400 at altitude (not massive issues). It felt underpowered and had to 1st 2nd gear it most of the time (except for the straights). Also I think I kept getting vapour lock so the bike didn't like starting when we stopped here and there.. looking back maybe my carbs weren't balanced properly though.
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Old 01-18-2013, 02:47 AM   #7
MichaelJ
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'93 GSX1100G with almost 140,000 kms on it here.

A little loss of power at altitude (Stelvio & similar - above 2,500 meters), but not much - and you really don't spend all that much time at altitude. Most (90%+) of your travel will be at 1,000 meters or less.

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