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 Carb Comparator 
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Joined: Fri Feb 19, 2010 7:36 pm
Posts: 1628
Location: Grantsville, Utah 45 min west of Salt Lake City
Anyone seen or used one of these? My friend put a bid on an auction at a surplus-freight damage place. On line it says they are used for comparing go kart carbs. Don't show cfm just compares carbs.

John


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Mon May 12, 2014 4:32 pm
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Joined: Wed Aug 25, 2010 7:54 am
Posts: 427
Location: Riverina Australia
Interesting John, can't find much info online.
Does it just show airflow on a scale, like a vague temperature gauge?
It does have 3 manometers by the looks of it

Jim

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Mon May 12, 2014 6:44 pm
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Joined: Wed Aug 25, 2010 7:54 am
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Location: Riverina Australia
Not much information, but this is from the manufacturer

http://www.simonsbalancing.com/carbcomparator.html


Jim

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Mon May 12, 2014 7:09 pm
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Joined: Fri Jan 08, 2010 3:35 pm
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Location: Pennsylvania
They use it to compare a known good carb to another. Most of the karts run stock parts so they want to make sure they get the "best" stock carb they can

There are a few kart guys on the forum someone will chime in sometime with a more detailed use . . .

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Mon May 12, 2014 7:28 pm
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Joined: Fri Apr 08, 2011 9:07 am
Posts: 68
I'm interested in knowing more about this myself. I have decided to buy one of these Simons Carburetor Comparators, and I am likely going to pick it up next week. I figured it could be a good tool to have in the workshop as I do mostly small scooter engines. I am still hoarding parts and tools (got a router and table now!) for my PTS build and I'll go forward with that for sure, but in the meantime that little comparator might be educational. Looking at the photos, I can't tell if it's setup to change from intake (suck) to exhaust (blow). I'm not sure how useful it will or won't be, but I figure if nothing else then I'll have a couple of manometers for the PTS build to hold me off till I can save enough for the PTS Digital Manometer.

I called Simons today to see if they could get a manual to me, but they said they needed the serial number. I suppose there must have been some changes over the years. Simons stopped selling the carb comparators something like 14 years ago according to the website. Guess the Y2K bug got 'em. :P

I will try to get pictures up after I buy it so that others can see. I don't know much about it. Perhaps a chart could be printed up so I can convert the numbers to CFM. Isn't that how the older Superflows (SF110, etc) are anyway? Forgive my ignorance.

Ciao!

~Josh


Fri Jun 06, 2014 12:19 am
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Joined: Fri Apr 08, 2011 9:07 am
Posts: 68
It is also interesting to see the way they flow the blocks:
Image


Fri Jun 06, 2014 12:23 am
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Joined: Fri Apr 08, 2011 9:07 am
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Just got off the phone with the seller, I'm picking it up Tuesday. :D

~Josh


Thu Jun 12, 2014 10:36 am
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Joined: Fri Feb 19, 2010 7:36 pm
Posts: 1628
Location: Grantsville, Utah 45 min west of Salt Lake City
Areomyst wrote:
Just got off the phone with the seller, I'm picking it up Tuesday. :D

~Josh


If you don't mind me asking what did you have to pay for it Josh?

John


Thu Jun 12, 2014 2:25 pm
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Joined: Fri Apr 08, 2011 9:07 am
Posts: 68
$225. I think it's worth it. I've seen them anywhere from $200 to $600. I'll use this little guy for my education while I get my PTS build together.

My guess is that your friend got his even cheaper!

~Josh


Thu Jun 12, 2014 3:01 pm
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Joined: Fri Feb 19, 2010 7:36 pm
Posts: 1628
Location: Grantsville, Utah 45 min west of Salt Lake City
Areomyst wrote:
$225. I think it's worth it. I've seen them anywhere from $200 to $600. I'll use this little guy for my education while I get my PTS build together.

My guess is that your friend got his even cheaper!

~Josh


It was an auction and he did not win. I told him he should bid at least $100 - $150 but I think he only bid $50 so he did not win. Don't know what it went for but there are a lot of go fast karters here in The Salt Lake area.

John


Thu Jun 12, 2014 7:48 pm
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