Gunson Colortune

Has anyone ever heard of or used these.

Website Quote:
Colortune is a unique mixture setting device and a detector of other mixture related problems. It is a sparking plug, which runs the engine like any normal sparking plug, but because it has a glass insulator, it allows the colour of the combustion flame, inside the cylinder, to show through it, thereby indicating the strength of the mixture or other faults.

http://www.gunson.co.uk/item.aspx?code=G4074

They run about $45.00 on E-Bay. Wonder if it's worth the money.

 

Sounds like a gimick to me. You need an air/fuel mixture meter to find the air:fuel ratio. The colour of the flame probably won't tell you much (if anything) unless you're a very long way out of tune.

 

Ok I looked at it in the other post. Was going to comment and then thought naaaa.

So you had to start a topic for it. Oh geee here I go again.............

Only the bloody British can come up with stuff like this. I'm sure it was useful back in the 40'/50's/60's when all their shit (engines) ran poorly (rich) because of SU, Amal and any other carb they made couldn't be adjusted. Plus the fact their electrical systems were made by the Prince of Darkness. The video shows it works on a 50's/60's Isetta w/BMW single cylinder engine with SU? carb. running rich as usual. They'll have to reset next week again.

There are so many things wrong with using that to tune. My ears work better than that thing I'll wager. Just listen to the engine when they adjusted it. That's all one needs to do when setting mixture on carbs and adjusting them like the video shows for idle. It does nothing for a running engine above that. I could go on and on but I won't. I will leave you with one question though.

If you adjust by color then:
What if your color blind like half the men out there supposedly are? Now what the fook do you do?:tongue-new:

Check out ebay. They are being sold by everybody. Looks to be the "SplitFire Plug of the USA.

Here's an excerpt:

- Running rich or feeling lean?
- We test a nifty gadget for checking carburetter settings
Tingkering and fettling, they are lovely words aren't they? They imply a sense of competent non-threatening servicing, to be enjoyed with a mug of strong coffee and dulcet tones of Radio 4 serenading in the background, within a snug and purposeful shed

Don't ya just love English prose?

Through at the end of the day the REAL mechanic has spotted it correctly.

You can use the Colortune to check the combustion at other engine speed too, rather than just at idle. The instructions that come with the kit describe what to expect at various throttle opening, to perhaps diagnose an incorrect main jet or slide, or even a defective accelerator pump on such equipped carburetters.


I tend to prefer using my experience and ‘feel’ to set these up, or if it’s a very complex problem by using a Dyno rolling road with an air/fuel ratio print out at a local specialist.



However, for most simple classic motorcycles the Colortune should be more than adequate. It’s especially useful when faced with twin carb equipped engines. Each air-screw can be set spot on using the Colortune, then, the idling balanced using an air gauge.


Hey I got this thing I'll sell ya that will tune your bike better than that. Make it go real fast. It's a special formula of good shit racing stuff mixed just perfectly that all you do is dump in your tank. Only $35.00 cheaper and better than any tune and talk about colors!!! Oh look at the pretty colors..........................and you won't even have to fettle.

 

I thought at first it was a Scandinavian Rock group.

 

Glad you did comment. I now have a smile on my face from ear to ear reading that rant.
Damn I didn't even read up on their web site as much as you did.
It did sound like a gimmick type of thing thats why I was wondering if anyone has tried them.

"Only the bloody British can come up with stuff like this"
:hss: That's funny

 

Mood ring tech..

 

Apparently an improperly tuned carburetor is the only reason an engine may be running rich or lean.

 

Unfortunately for your explanation both SU carburettors (Skinners Union founded 1905) and Amal (Amalgamated Carburettors Ltd late 1920s, changed to Amal in 1931) were adjustable

I say chaps, us "Bloody Brits" prefer a jolly good cup of tea don't you know


I know nothing us "Bloody Brits" have, do, make, invent or say is ever as good as what you "F**ckin Yanks" seem to come up with but take pity on us, I mean after all we haven't had the luxury of being discovered by a Spaniard 500 years ago, we've only been around since the 10th century. How the world has changed since the "Bloody Brits" invented the computer (Charles Babbage) but then we went and came up with the Gunson Colour Tune, oh well I suppose for every action etc etc (sorry to quote another "Bloody Brit") layful:

 

I like Hobbits. Does that count?

Used to run Lodge plugs in a stovebolt I had. Platinum tips and a nifty tone of royal purple.

We invented Harleys. So there!!

 

That being said...thread over!

 

Colortune is useful for adjusting idle a/f mixture, but not so good for running at highway speeds with engine under load cuz you can't see colortune while riding. :confusion:

As i remember, the Colortune was the HOT SETUP way back on my '57 MGA. Having some British and Italian sports cars over the years, motorcycles finally took over about 1988, and i already had enuff electrical and mechanical 'sperience fixin those fickle things to jump right into 'cycles. Antique colortunes are totally outclassed by digital a/f meters now, of course.

 

Danged squirrelman now you burst my balloon. I was hoping I could ride around at night with a cheap set of those led Christmas tree looking lights under my As*.
:yousuck:

 

Not necessarily. It could be morphing into a "Poms (AKA Brits) and Yanks bag the sh!t out of each other" thread. Now that's a thread that us Aussies would think is hillarious! Instead of Aussies bagging the sh!t out of each other (it's a national passtime, thoroughly enjoyed by all true Aussie blokes), we get to see someone else trying their hand at this great Australian game! ROFL

 

In that case...Thread On! opcorn:

 

In the heat of competition, we should not forget Sir Francis Bacon who in the 13th century, invented bacon. Same dude came up with all that stuff aboot chickens and eggs too. Everything was going just fine until the Canadians decided that bacon should be called Canadian Bacon.

 

That's right we created Canadian bacon and poutine, EH

 

So let me go back to my original question:

WHY?.......WHY Poutine?
Brown liquid on fries to make them soggy uke:
Cheese Fries were created by a young fry cook named Austin Ruse at the Dairy Queen on First Capital Drive in St. Charles, Missouri in 1973
Thats St. Charles, Missouri UNITED STATES OF AMERICA

Why change a good thing??? Why??

 

Poutine on Jo-jo's is an all American invention by a guy named Joe something.

 

Can't we all just get along and talk about something that we can all agree on, like, oh, I don't know,,,,,OIL or TIRES:cower::lol:
John

 

A better topic with superior agreement is dumping on harleydoods.

What to wear is good too. Especially if the labels are easy to read.