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Broken Carb post repair - The Fix

  • Thread starter Thread starter Roemy24
  • Start date Start date
R

Roemy24

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Fellow Gs'rs, how many of you have done the cleaning of carbs and done the dreaded accident of breaking off a float post. I have had the misfortune of doing it and then the tough task to find a replacement. I believe I have come up with a fairly inexpensive solution. Hopefully I have captured your attention, if so please read on in the following posts what I've developed. :lol:
 
I've designed and prototyped a "sleeve" if you will that the broken part fits into and then seats over both existing posts. The device is made of a chemical and heat resistant material that has with stood months of tests in gasoline and even a standard dipping of the carb for cleaning sake.
 
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You'll see in the attached picture of how it looks installed with no float.
 
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Now onto the help I need from anyone out there. After a year of work on my bike after being took on Craigslist, I have chosen not to tear into it again until it needs it. I have not tested this device and looking for a few volunteers (3) that will give it try and give me some feedback to how it performs. I can produce these fairly inexpensive, considering the other choices out there.

The only issue so far that has been pointed out is the possibility of fuel displacement in the bowl. I don't believe it will be enough to make a difference but also the reason I need some test results. Feel free reply with comments/questions and I'll let get back quickly to you. A PM also works just as well, especially if you would like a number to talk in person.

Thanks, happy and safe riding season to all in '09!
 
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that's pretty cool, lots of bikes with these carbs on it around too!
 
I love the concept and think you may be onto something! ;)

There may be a thought about displacement however...this can be corrected with the proper float setting. Maybe a +1mm would do the trick.
 
You're on the same thought track I had if it does displace some. I would like it tested normally as if it wasn't on there first to see if it does cause any issues. Then try the float adjustment if needed. I originally had it made as just one "sleeve" but found out this currect design was much much more study. You'd be suprised on how solid of feel it has once installed! :D
 
It won't affect the float level, just max capacity. The needle seat has a set flow rate for gas into the bowl. These are not pressure driven so we have to rely on gravity to fill it.

It would take a serious amount of fuel flow through the well to drop the level enough to cause a problem. As long as the needle area is larger than the jets which take in fuel, I think you're OK.

This is a great innovation, I like the .22 cal shell casing repair but you need some post left to make it work. This does the job quite nicely. Something everyone should have on their bench before taking the carbs apart.
 
I doubt that the displaced fuel will have any effect at all. It is the height of the fuel in the bowl that effects the fuel mixture.
 
Duaneage, thank you for the information. Based on that this would be a very quick and easy repair. All I need now are some testers just for verification purposes. I'd hate to put something out there that didn't work but I have EXTREMELY high hopes. Trying my best in assisting these bikes to stay around AND running! :)
 
Let's just put all those pictures in one post...

The busted post:

attachment.php


The post repair device:

attachment.php


The device installed w/o floats:

attachment.php


The device with floats:

attachment.php


Looks very promising. Cutaway view in the next post.

Thank you for your indulgence,

BassCliff
 
And the cutaway view. Doesn't seem to be any problem with clearance. Nice work!

attachment.php



Thank you for your indulgence,

BassCliff
 
Excellent presentation!!!!!!

Excellent presentation!!!!!!

The idea was excellent and the desire to find a solution was outstanding. Good job. Looking at your remedy for the broken post attachment is by all means a quick fix method. My personal opionion, looks great. I have to agree what was said about the volume being off, doesn't matter has long as the float level is set and there is no binding it should be all good. Great solution and it is great that you shared this with the members. Bob
 
:p There was other problems with a spare carb so I did a little dremeling on the bowl for show and tell :eek:
 
Broken carb post

Broken carb post

I've got the same problem. I just did a carb cleaning and found the exact same surprise when I pulled one of the bowls apart.....a broken post. The post still seemed to hold the bar and float alright. That said, I'd give it a try as I have to pull the carbs again soon as I put the float needles in upside down. Always check the manual if you come back after a week. That said, the bike still runs better than before, but I guess that I should flip the needles as designed.
 
ATX, I sent you a reply to your PM. I'll get it out the door tomorrow when you send me your address. Thanks!!!!
 
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