Gunson's colourtune?

[beemer]

Has anyone ever used a Gunson's Colour Tune to set the mixture on the R65?is so,how as it?

[montmil]

Don't recall the manufacturer's name but I had a ColorTune way back in the day. I attempted to figure it all out but finally quit trying. Not sure if it was Snake Oil or not.   Monte

[ukzknos]

Hi Beemer

Yes I have one and, in conjuction with balanced carbs gives superb results!
Highly recommended  

I think they are still available at Halfords for about 20 quid.

[beemer]

Hi Beemer

Yes I have one and, in conjuction with balanced carbs gives superb results!
Highly recommended  

I think they are still available at Halfords for about 20 quid.

Thanks for  that,is it the standard model you need?or something just for motorcycles?

[ukzknos]

Beemer

It is the 'standard' 14mm plug version, see link:

http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_189330_langId_-1_categoryId_165557

Good old airheads with 14mm plugs as the 12mm &10mm plug colortune are more expensive!

[beemer]

Beemer

It is the 'standard' 14mm plug version, see link:

http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_189330_langId_-1_categoryId_165557

Good old airheads with 14mm plugs as the 12mm &10mm plug colortune are more expensive!

I have one of these!!had it for years,not sure if it's the Gunson's 500 model which has a tapered thread i believe,it's quite short,and i was wondering if it might blow out!!which one do you have?

[Bob_Roller]

I have what I believe is an older version of the Colortune .

It doesn't have what looks like the white ceramic insulator from a spark plug, over the clear glass viewing window .

Mine arcs across the glass surface, and 'shorts out' the ignition on the cylinder that it is installed in .

I've tried RTV type sealants over the center electrode where it goes into the glass, but still can't stop the arcing .

So be sure you get the newer model .

[beemer]

I have what I believe is an older version of the Colortune .

It doesn't have what looks like the white ceramic insulator from a spark plug, over the clear glass viewing window .

Mine arcs across the glass surface, and 'shorts out' the ignition on the cylinder that it is installed in .

I've tried RTV type sealants over the center electrode where it goes into the glass, but still can't stop the arcing .

So be sure you get the newer model .

Mine actually has the ceramic insulator,so should be ok,i might give it a go tomorrow.

[beemer]

Used the colortune this morning,what a great item this is,one carb was ok,the other slightly off!!!after adjustment,that nice blue colour shown in both pots, both are running in harmony,balanced the carbs afterwards and the job is a "good un".

[Motu]

I have two Colourtunes....different models,but both work.I used then to set up twin cyl motorcycles.I haven't used them on the R65.....but will do if I want to set the idle again.