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General Category => General Discussion => Topic started by: nunzio on June 16, 2015, 04:48:42 PM

Title: Throttle cable adjustment Thomaselli Daytona 2c with Dellorto VHB 29
Post by: nunzio on June 16, 2015, 04:48:42 PM

I have been trying to find information on how to adjust the cables after you install new cables for a Thomaselli Dayton2 /Dellorto VHB 29 set-up.

Each carb has it's own cable.

There are adjustments at the top of the carbs and at the throttle.

How do I adjust these?

Which one do I adjust  first?

I have looked for a couple hours on the "net" and can not find a beginners explanation of this.


This will be my first time replacing and adjusting these cables .

Thank-you....Alan

Title: Re: Throttle cable adjustment Thomaselli Daytona 2c with Dellorto VHB 29
Post by: guzziownr on June 16, 2015, 06:24:13 PM

I had this setup before I moved on to 36 MM carbs.  The adjusters on the tops of the carbs are easier to reach and lock down but have minimal travel.  I used to screw those down almost all the way as a start.  The next step would be to use the adjusters on the cable tops to get as close as possible to a balance (slides lifting simultaneously) then go back to the carb tops for fine tuning.  There should be a very small and even amount of slack at the carb tops.  If it is too tight the idle will rise when you move the bars at a stop.  Too loose and the throttle will need to rotate a bit before you get going.

I assume you have seen this but if you have no vacuum ports on your intakes you will have to synch them as best you can:

http://www.thisoldtractor.com/moto_guzzi_loopframe_carburetor_balancing_synchronizing.html

Title: Re: Throttle cable adjustment Thomaselli Daytona 2c with Dellorto VHB 29
Post by: nunzio on June 16, 2015, 07:21:43 PM

THANK-YOU guzziownr !!!!!!!!!!     :thumb:

I Needed Exactly what you described!!!!!

I did not know how and where to start.

I'll be able to finish now and get back on the road !!!!!!!

Alan

Title: Re: Throttle cable adjustment Thomaselli Daytona 2c with Dellorto VHB 29
Post by: guzziownr on June 16, 2015, 08:15:54 PM

You may find that the cables stretch a bit so you may have to go back and synch again once you have some miles on the bike.  If your cables are routed smoothly you can put lighter-than-stock springs in your 29's so your forearms don't look like Popeye post workout.

Title: Re: Throttle cable adjustment Thomaselli Daytona 2c with Dellorto VHB 29
Post by: nunzio on June 16, 2015, 11:52:31 PM

Thanks guzziownr,

I never thought about the cable stretching  on a carb cable.

I'll keep an eye out for that.

I've tried to find the lighter springs, but ,have had no luck....Alan