Starter valve synce virgin no more!

DavidR8 · Nov 14, 2017

You're welcome. I was confused about the term "starter valve sync" vs "TB sync". I found it quite helpful.

Ride52 · Dec 1, 2017

Hi Guys, with the current exchange rate, you can get the Carbtune Pro 4 column for $98.50 direct from Carbtune shipping included. https://www.carbtune.com/

Jim Van · Dec 1, 2017

Being the cheap-skate that I am ( I'm retired and on a fixed-income ) , I bought 4 gauges from McMaster-Carr and then matched them almost perfectly by adjusting the spring inside the gauges ( had to remove the case to gain access to the spring). I was amazed how close they are all matched now. They don't need to be accurate, only closely matched to do a "starter valve" sync on a ST1300 or "carb sync" on a ST1100. Added some restrictors to keep the gauge needles steady/dampened.

Kevcules · Dec 1, 2017

Jim Van said:
Being the cheap-skate that I am ( I'm retired and on a fixed-income ) , I bought 4 gauges from McMaster-Carr and then matched them almost perfectly by adjusting the spring inside the gauges ( had to remove the case to gain access to the spring). I was amazed how close they are all matched now. They don't need to be accurate, only closely matched to do a "starter valve" sync on a ST1300 or "carb sync" on a ST1100. Added some restrictors to keep the gauge needles steady/dampened.

I'm going to try and build a tool also. Can you take a pic of your set up with the restrictors and where did you get them? Did you just pop off the rear cover of the vac gauge to adjust springs?

thanks

dwalby · Dec 1, 2017

Jim Van said:
Being the cheap-skate that I am ( I'm retired and on a fixed-income ) , I bought 4 gauges from McMaster-Carr and then matched them almost perfectly by adjusting the spring inside the gauges ( had to remove the case to gain access to the spring). I was amazed how close they are all matched now. They don't need to be accurate, only closely matched to do a "starter valve" sync on a ST1300 or "carb sync" on a ST1100. Added some restrictors to keep the gauge needles steady/dampened.

I'm disappointed in you Jim, I would have expected you to have mined your own Mercury and blown your own glass tubes from sand. Or at least found some old home thermostats to get the mercury out of the tip-switches.

Belray · Dec 1, 2017

4mm is very close to 5/32

dennisMe · Dec 2, 2017

Re: Starter valve sync virgin no more!

I started a project for syncing carbs. It's in the working prototype stage. Right now I'm waiting for some components to arrive so I can build an even simpler version for electronics noobs.
Search for "CarbOnBal", it's on hackaday and the software is on GitHub.
If you like electronic projects this should help. It can be built for â‚¬50 if you know where to look so it's not expensive as these things go.

Sent from my MI 2S using Tapatalk

cdnemsguy · Dec 10, 2017

Well I finally got to doing the TB sync. Here are the photos of the before I moved the setting to align the cylinders. Now I did believe that it would make it smoother etc from what I had read, but after doing the sync and seeing/feeling the difference, so far wow!. I am not sure if this is psychological or what, but to be it easier to start, runs very smooth even though I thought it was good before, and throttle response seems crisper. I will try it again tomorrow after a sleep. I do have one question tho...after I finished it off and put it all back together, the FI light is off. I read where we are to jump some wires for the FI reset after 5 flashes? Can some one explain please?

Jim Van · Dec 10, 2017

dwalby said:
I'm disappointed in you Jim, I would have expected you to have mined your own Mercury and blown your own glass tubes from sand. Or at least found some old home thermostats to get the mercury out of the tip-switches.

Doug : I must humbly admit my skills are limited ...... but I did rebuild my water pump and it hasn't leaked in the last 10K miles.

Jim Van · Dec 10, 2017

Kevcules said:
I'm going to try and build a tool also. Can you take a pic of your set up with the restrictors and where did you get them? Did you just pop off the rear cover of the vac gauge to adjust springs?

thanks

Yup, slip off the rear cover after removing two screws. These are 0-30 in Hg / 0-100KPa gauges from McMaster-Carr. Stock # 4002K14.

I used a tee and then a syringe to pull a vacuum when matching the gauges. For the restrictors, I drilled a very small hole in a length of 1/4 " wooden dowel and then inserted it into the larger diameter tubing. I was hoping the 1/8 " tubing would create enough damping, but no cigar, so I added the larger diameter 1/4" tubing and restrictors. This is basically a prototype. You can improve on it, I'm sure.

Kevcules · Dec 10, 2017

Jim Van said:
Yup, slip off the rear cover after removing two screws. These are 0-30 in Hg / 0-100KPa gauges from McMaster-Carr. Stock # 4002K14.

I used a tee and then a syringe to pull a vacuum when matching the gauges. For the restrictors, I drilled a very small hole in a length of 1/4 " wooden dowel and then inserted it into the larger diameter tubing. I was hoping the 1/8 " tubing would create enough damping, but no cigar, so I added the larger diameter 1/4" tubing and restrictors. This is basically a prototype. You can improve on it, I'm sure.

Thanks for the picture.......looks good. I'll give it a try this winter once I get my gauges together and mounted , as my riding season is over now.

cdnemsguy · Dec 10, 2017

Well fired it up again post sync and fires up great, idles better and throttle response seems better, so a little more ice to melt of the driveway and a ride will be in order. All is well!

ToddC · Dec 11, 2017

cdnemsguy said:
Well fired it up again post sync and fires up great, idles better and throttle response seems better, so a little more ice to melt of the driveway and a ride will be in order. All is well!

Dude...fly down and do mine...!!!!!!

T

Bmacleod · Dec 11, 2017

cdnemsguy said:
Well I finally got to doing the TB sync. Here are the photos of the before I moved the setting to align the cylinders. Now I did believe that it would make it smoother etc from what I had read, but after doing the sync and seeing/feeling the difference, so far wow!. I am not sure if this is psychological or what, but to be it easier to start, runs very smooth even though I thought it was good before, and throttle response seems crisper. I will try it again tomorrow after a sleep. I do have one question tho...after I finished it off and put it all back together, the FI light is off. I read where we are to jump some wires for the FI reset after 5 flashes? Can some one explain please

Same thing happened with mine. The FI light wasnt on when I finished syncing.

cdnemsguy · Dec 11, 2017

ToddC said:
Dude...fly down and do mine...!!!!!!

On my way! But weather got bad so I diverted to Florida. Sorry Todd.

Igofar · Dec 11, 2017

ToddC said:
Dude...fly down and do mine...!!!!!!

T

Ride down to me and I'll do yours. :rofl1:

Whooshka · Apr 17, 2018

Did the sync this past weekend. It was much easier than I thought. My only 2 issues were... 1) getting the old vacume lines off (I replaced them all with new) and 2) figuring out the adjustment screws. There really is no screw, I had to slightly"pull out" the black plastic toothed pieces, rotate them, and reseat them. But all went well. Before and after....

DavidR8 · Apr 17, 2018

Well done!

Whooshka · Apr 17, 2018

BTW, I did not do any wire jumping/reset. After I removed the Carbtune and hooked up all the lines the FI light was no longer lit. Did I do something wrong by not doing the reset?

cdnemsguy · Apr 17, 2018

Whooshka said:
BTW, I did not do any wire jumping/reset. After I removed the Carbtune and hooked up all the lines the FI light was no longer lit. Did I do something wrong by not doing the reset?

No, mine did not need a reset either, and runs great with no FI light on since.

Starter valve synce virgin no more!

DavidR8

Ride52

Jim Van

Kevcules

dwalby

Belray

dennisMe

cdnemsguy

Jim Van

Jim Van

Kevcules

cdnemsguy

ToddC

Bmacleod

cdnemsguy

Igofar

Whooshka

Fairly faST old guy

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DavidR8

Whooshka

Fairly faST old guy

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