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tight git, carb balancer?

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Aff
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PostPosted: 21:33 - 09 Feb 2015    Post subject: Reply with quote
That's a pressure gauge. You would need some Vacuum Gauges.
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andym
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PostPosted: 21:38 - 09 Feb 2015    Post subject: Reply with quote
You just need a few meters of screen washer tube and fork oil (or similar liquid)
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Rogerborg
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PostPosted: 21:41 - 09 Feb 2015    Post subject: Reply with quote
PaulFzs wrote:
andym wrote:
You just need a few meters of screen washer tube and fork oil (or similar liquid)

more effort than i have.

<BodyGuard>Quick way is to balance them with a spirit level then.</BodyGuard>
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Carvel
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PostPosted: 21:46 - 09 Feb 2015    Post subject: Reply with quote
Rogerborg wrote:
<BodyGuard>Quick way is to balance them with a spirit level then.</BodyGuard>

The smiler has had regular success balancing carbs in the past using a set of kitchen scales.
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mudcow007
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PostPosted: 21:51 - 09 Feb 2015    Post subject: Reply with quote
u mean like this

https://i25.photobucket.com/albums/c81/mudcow007/20140417_075029_zpse4f2aaf9.jpg

3 of your queens finest it cost me to make....

you cant get much ghetto than that, a couple of 3 way fishtank airline connectors, some fishtank airline, ATF an some top quality MDF
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andym
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PostPosted: 00:46 - 10 Feb 2015    Post subject: Reply with quote
mudcow007 wrote:
u mean like this

https://i25.photobucket.com/albums/c81/mudcow007/20140417_075029_zpse4f2aaf9.jpg

3 of your queens finest it cost me to make....

you cant get much ghetto than that, a couple of 3 way fishtank airline connectors, some fishtank airline, ATF an some top quality MDF


The last one I made was 2 bits of hose in 'U' shapes.... which technically I only ever used 1.

Anyway, since I don't have any hose or fork oil (and having the carbs out for a bloody good clean) I've just shone a torch through the butterfly valve and got them all as equal as possible.... I may post a video of how crap the bike runs
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cb1rocket
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PostPosted: 02:10 - 10 Feb 2015    Post subject: Reply with quote
Best method I have seen is using one u loop of tube to balance all four cylinders from the base cylinder. Ie no 2 is base cylinder. So 1 & 2, then 2 & 3, then 2 & 4 etc
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mentalboy
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PostPosted: 02:29 - 10 Feb 2015    Post subject: Reply with quote
Has anyone any experience of this contraption? If it works as well as the reviews it would be worth forking out 17 quid just to avoid the messing about with a DIY setup.
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mentalboy
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PostPosted: 03:40 - 10 Feb 2015    Post subject: Reply with quote
PaulFzs wrote:
mentalboy wrote:
Has anyone any experience of this contraption? If it works as well as the reviews it would be worth forking out 17 quid just to avoid the messing about with a DIY setup.


£26 you can get a dual gauge one.


Funnily enough I was looking at vacuum gauges earlier today and spotted this ad, just assumed it was for four carbs. So... not quite as good fro the pocket as assumed but has anyone used them?
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andym
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PostPosted: 09:16 - 10 Feb 2015    Post subject: Reply with quote
cb1rocket wrote:
Best method I have seen is using one u loop of tube to balance all four cylinders from the base cylinder. Ie no 2 is base cylinder. So 1 & 2, then 2 & 3, then 2 & 4 etc


I know I've not balanced a lot of carbs, but I've always thought it was 1 & 2 then 3 & 4 then 2 & 3 because that's how the adjustment screws are
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orac
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PostPosted: 09:26 - 10 Feb 2015    Post subject: Reply with quote
andym wrote:
cb1rocket wrote:
Best method I have seen is using one u loop of tube to balance all four cylinders from the base cylinder. Ie no 2 is base cylinder. So 1 & 2, then 2 & 3, then 2 & 4 etc


I know I've not balanced a lot of carbs, but I've always thought it was 1 & 2 then 3 & 4 then 2 & 3 because that's how the adjustment screws are

this is the correct, carbs should be balanced in pairs - unless you got a triple then god know what happens then

any how, I got me one of these
https://www.ebay.co.uk/itm/New-Motorcycle-Carb-Carburettor-Vacuum-Balancer-Gauge-2-4-Cylinder-Gauges-Kit-/301063241673?pt=UK_Motorcycle_Parts_13&hash=item4618c47fc9

works a charm and not really that expensive all things considered.
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Copycat73
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PostPosted: 10:50 - 10 Feb 2015    Post subject: Reply with quote
orac wrote:

any how, I got me one of these
https://www.ebay.co.uk/itm/New-Motorcycle-Carb-Carburettor-Vacuum-Balancer-Gauge-2-4-Cylinder-Gauges-Kit-/301063241673?pt=UK_Motorcycle_Parts_13&hash=item4618c47fc9

works a charm and not really that expensive all things considered.


had a set for a number of years... they are fine.
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cb1rocket
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PostPosted: 14:07 - 11 Feb 2015    Post subject: Reply with quote
Your balancing against the non adjustable cylinder so balancing 3 and 4 for example would be an error. The non adjustable carb is the base for balancing and should be set against that as its just that you can't set no. 2. It does differ from bike to bikes i believe. Triple cylinder bikes are easy, it's the same process
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cb1rocket
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PostPosted: 14:15 - 11 Feb 2015    Post subject: Reply with quote
As taken from that 17 quid ebay advert


This amazing Carb Balancer can synchronise 2,3 and 4 cylinder bikes. Start with the base cylinder and any other carb, then subsequent carbs. The base cylinder is the carb with the throttle stop/tick over screw. This carb does not have a synchronisation screw, as the throttle stop screw is its only adjustment. Repeat the process to super synch your carbs.If your carbs are badly out of synch your engine will be under terrific extra strain as your pistons are working hard against each other, and not with each other, sapping vital power and fuel. No matter how much throttle you apply the weaker working cylinder will allways lag behind, sapping the power from the harder working piston!
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trisers
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PostPosted: 01:55 - 12 Feb 2015    Post subject: Reply with quote
mentalboy wrote:
Has anyone any experience of this contraption? If it works as well as the reviews it would be worth forking out 17 quid just to avoid the messing about with a DIY setup.


Yep i used one on my cbr...the ball does bounce around a bit but does do the job, eliminated a lot of vibration at mid revs and the idle was a lot smoother.

The nipples supplied are only plastic so you need to be careful not to cross thread them or they will be buggered.

I only used it because a mate lent it to me which saved actually buying equipment which i was likely to only use once or twice but if i had to splash out i'd probably have bought a set of guages as they're not a lot more dosh.
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orac
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PostPosted: 07:59 - 12 Feb 2015    Post subject: Reply with quote
cb1rocket wrote:
Your balancing against the non adjustable cylinder so balancing 3 and 4 for example would be an error. The non adjustable carb is the base for balancing and should be set against that as its just that you can't set no. 2. It does differ from bike to bikes i believe. Triple cylinder bikes are easy, it's the same process


I was taught to balance by a bike tech, doing 1-2, then 3-4 and then 2-3 brings the 2 pairs into sync.

the official Suzuki manual for the 400 actually says to do it this way too. there are many many many sources that says 1-2 3-4 and then 2-3.

hers but one link, really cant be assed to go and get more.
https://www.dansmc.com/balancecarbs.htm
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mentalboy
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PostPosted: 15:06 - 12 Feb 2015    Post subject: Reply with quote
orac wrote:
cb1rocket wrote:
Your balancing against the non adjustable cylinder so balancing 3 and 4 for example would be an error. The non adjustable carb is the base for balancing and should be set against that as its just that you can't set no. 2. It does differ from bike to bikes i believe. Triple cylinder bikes are easy, it's the same process


I was taught to balance by a bike tech, doing 1-2, then 3-4 and then 2-3 brings the 2 pairs into sync.

the official Suzuki manual for the 400 actually says to do it this way too. there are many many many sources that says 1-2 3-4 and then 2-3.

hers but one link, really cant be assed to go and get more.
https://www.dansmc.com/balancecarbs.htm


For a twin gauge CB's explanation makes sense, mathematically, whether it works I've no idea. I've always used a 4 dial gauge set-up for balancing, always balanced in pairs 1&2 -3&4 and I've always had to return to rebalance 1&2 after the sequence 1&2-3&4 because in getting 3&4 right it always seems to throw 1&2 out, despite having just balanced them.
I've always presumed it to have something to do with the way the fuel is distributed to each carb, so whilst the use of 2 as a common for the other three might get it close I can imagine it being a right ballache to keep attaching and removing gauge pipes until you can be sure that each one is right with the others.
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raak
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PostPosted: 17:08 - 12 Feb 2015    Post subject: Reply with quote
Copycat73 wrote:
orac wrote:

any how, I got me one of these
https://www.ebay.co.uk/itm/New-Motorcycle-Carb-Carburettor-Vacuum-Balancer-Gauge-2-4-Cylinder-Gauges-Kit-/301063241673?pt=UK_Motorcycle_Parts_13&hash=item4618c47fc9

works a charm and not really that expensive all things considered.


had a set for a number of years... they are fine.


a good investment.
had mine several years also.
use em to and set up carbs at least once a year...£30 well spent. Thumbs Up
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johnsmith222
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PostPosted: 19:29 - 12 Feb 2015    Post subject: Reply with quote
andym wrote:
cb1rocket wrote:
Best method I have seen is using one u loop of tube to balance all four cylinders from the base cylinder. Ie no 2 is base cylinder. So 1 & 2, then 2 & 3, then 2 & 4 etc


I know I've not balanced a lot of carbs, but I've always thought it was 1 & 2 then 3 & 4 then 2 & 3 because that's how the adjustment screws are


If 3&4 are balanced, then balancing 2 with 3, or 2 with 4 is exactly the same thing surely.

For the sake of £60 or so, you're best just investing in a morgan carbtune and being done with it. Do it enough times and the tool pays for itself.
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