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Carb Settings for Jolly Moto's
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Chris F



Joined: 19 Oct 2012
Posts: 78
Location: Cornwall

PostPosted: Wed Aug 20, 2014 8:10 pm    Post subject: Carb Settings for Jolly Moto's Reply with quote

If anyone is interested Piero has sent these over, in Italian of course, but with Google to hand it wasn't too hard to work them out.
Only bit I'm not sure about is right and left. As it refers to differences between the two but I'm not if right means the right carb as you are looking at them as you're working on them, i.e looking from the front wheel back to the carbs or does it mean the one on the right hand side as if you were sitting on the bike facing forwards?
Obviously best way is to ask Piero but my Italiano is not so good. Any thoughts?
Also if anyone wants the settings let me know....
Chris
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SethG



Joined: 09 Aug 2014
Posts: 95

PostPosted: Wed Aug 20, 2014 8:38 pm    Post subject: Reply with quote

I need a copy for sure.
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mm500



Joined: 18 Feb 2014
Posts: 121
Location: Norway

PostPosted: Wed Aug 20, 2014 9:46 pm    Post subject: Reply with quote

yes that would be nice
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trev45



Joined: 15 Jun 2011
Posts: 449
Location: Sydney Australia

PostPosted: Wed Aug 20, 2014 10:44 pm    Post subject: Reply with quote

bottom carb - right carb
220 main
K76 needle
DQ 258 sprayer

Top carb - left carb
230 main
K83 needle
DQ258 sprayer

Float level
27mm main jet to float arm

Vee twins need more fuel to top cylinder
bottom runs hotter so richer

Trev
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vort28



Joined: 22 Mar 2010
Posts: 2194
Location: Northwest , UK

PostPosted: Thu Aug 21, 2014 7:31 am    Post subject: Reply with quote

As thread

http://www.bimotaforum.co.uk/viewtopic.php?t=3816

I have 220 and 225 in mine and so does Nige. Would be interesting to find out what people actually have compared to what the paper says they should have.
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Chris F



Joined: 19 Oct 2012
Posts: 78
Location: Cornwall

PostPosted: Thu Aug 21, 2014 2:06 pm    Post subject: Reply with quote

trev45 wrote:
bottom carb - right carb
220 main
K76 needle
DQ 258 sprayer

Top carb - left carb
230 main
K83 needle
DQ258 sprayer

Float level
27mm main jet to float arm

Vee twins need more fuel to top cylinder
bottom runs hotter so richer

Trev


no Trev they have changed.... These are the most recent changes that've been working on....
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Chris F



Joined: 19 Oct 2012
Posts: 78
Location: Cornwall

PostPosted: Thu Aug 21, 2014 2:13 pm    Post subject: Reply with quote

bottom carb - right carb
220 main
K76 needle (3rd notch)
DQ 258 sprayer

Top carb - left carb
220 main
K83 needle (3rd notch)
DQ258 sprayer

Float level
27mm main jet to float arm

So note the change from 230 to 220 for the left carb.
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trev45



Joined: 15 Jun 2011
Posts: 449
Location: Sydney Australia

PostPosted: Thu Aug 21, 2014 4:18 pm    Post subject: Reply with quote

True but these settings are just the starting point
riding and reading the plugs are the true test
as fuels and rider makes a difference on jetting

Trev
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Chris F



Joined: 19 Oct 2012
Posts: 78
Location: Cornwall

PostPosted: Thu Aug 21, 2014 4:24 pm    Post subject: Reply with quote

Can anyone shed any light on some good initial settings for these screws?
I assume these are mixture screws. But I had one set to 1.5 turns out and the other 4.5 turns out. Can't believe they would be that wildly different.




Would they be the same settings for both carbs?

I realise they would be some tweaking involved but if someone else has done the hard work and has a good starting base would be much appreciated.

Once have this done and new servo cables are here should be MOT time! Yippee!!!!

Thanks,
Chris
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Chris F



Joined: 19 Oct 2012
Posts: 78
Location: Cornwall

PostPosted: Thu Aug 21, 2014 4:29 pm    Post subject: Reply with quote

trev45 wrote:
True but these settings are just the starting point
riding and reading the plugs are the true test
as fuels and rider makes a difference on jetting

Trev


Yes, fair point Trev. Just seems odd he's changed to both 220. As even the A4 paper he posted off to me had 230 on there and then changed it back to 220. And on my RS250 I have different mains in each cylinder.
To be fair he did say these were "fast road" settings and not "track" settings as they are different.
Still I have 215/220 mains and different needles and sprayers/atomisers so should be a difference I hope...
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trev45



Joined: 15 Jun 2011
Posts: 449
Location: Sydney Australia

PostPosted: Thu Aug 21, 2014 4:30 pm    Post subject: Reply with quote

If the carbs are sinked right they should be the same

Witch carb is 1.5 and 4.5 ?

Trev
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Chris F



Joined: 19 Oct 2012
Posts: 78
Location: Cornwall

PostPosted: Thu Aug 21, 2014 4:53 pm    Post subject: Reply with quote

the right hand carb was 4.5 and the left 1.5. I would have thought they would be the same or if not slightly closer than that. just don't have a lot of confidence in the settings. 1st real time i've looked at the carbs as spent more time fixing the other niggly things and riding my other bikes!
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Chris F



Joined: 19 Oct 2012
Posts: 78
Location: Cornwall

PostPosted: Fri Aug 22, 2014 3:48 pm    Post subject: Reply with quote

anyone tell me what their mixture needle settings are set to please???? Smile
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trev45



Joined: 15 Jun 2011
Posts: 449
Location: Sydney Australia

PostPosted: Fri Aug 22, 2014 11:30 pm    Post subject: Reply with quote

Air bleed screws ?
two turns out

Trev
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Chris F



Joined: 19 Oct 2012
Posts: 78
Location: Cornwall

PostPosted: Sun Aug 24, 2014 2:38 pm    Post subject: Reply with quote

trev45 wrote:
Air bleed screws ?
two turns out

Trev


yep them the ones Trev. Cheers bud... soon as the bloody servo cables turn up I'm out on it before winter comes!
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