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[Spridgets] Carb sysn

Subject: [Spridgets] Carb sysn
From: grday at btinternet.com (Guy R Day)
Date: Thu, 1 Sep 2011 09:29:22 +0100
References: <a0fks2$d5j0l3@email.mtu.edu> <49C4336F-D553-48A0-978A-ECEA88A7DBAD@gmail.com>
Batteries!!!!! - Batteries????
What is that big (normally black) plastic thing sat next to the firewall and 
full of acid with two metal lumps sticking out of the top for ????
Google MAF sensors and see what the rest of the world is doing in vehicles.

Tim has it just right - he has thought it through and can do it.  He has not 
invented the wheel but has thought of a device that can show twin carb air 
flows in an LBC.  If he does it right, it will show the flow balance not 
just at bonnet up and tickover time but throughout the rev range whilst you 
are driving it.  This will let you know if one carb is failing under hard 
work, it will show you a little more of the picture under your bonnet but, 
most importantly it will show that Tim can and has done it for a LBC and 
no-one else (?) has.

Follow your ideas through Tim and don't forget an O2 sensor can be stuck in 
there as well.
Life can be fun if you let it.

All the best,

Guy R Day



----- Original Message ----- 
From: "Seth Jones" <sethamosjones at gmail.com>
To: "Tim Collins" <thcollin at mtu.edu>
Cc: <spridgets at autox.team.net>
Sent: Wednesday, August 31, 2011 5:14 AM
Subject: Re: [Spridgets] Carb sysn


> Not sure how this unit worked, but it appears in a factory SU carb manual
> somewhere.  It looks like its a special vacuum gage that can compare two
> vacuums somehow.  a mechanical device such as this would be a much better
> solution I think because it wouldn't require batteries.
>
> BTW Uni-syn syncronizers have been around longer than you might think. 
> Here's
> an ad for them from 1962 as it appeared in car and driver
>
> On Aug 30, 2011 AD, at 7:10 PM, Tim Collins wrote:
>
>> I've been day dreaming about this sync the carbs process and a
>> "modern" way to do it. Seems like a device could be made from two
>> Mass Air Flow (MAF) sensors (one per carb) to sync them. A MAF, as I
>> understand it from the K&N filter site
>> (www.knfilters.com/maf/maftestresults.htm) outputs a voltage directly
>> proportional to the flow of air past the heated wire sensor.
>>
>> All you would have to do is read the voltage from each MAF sensor
>> with something - a voltage meter perhaps or go fancy with inputs
>> through a parallel port or USB port to a computer program that
>> displays the voltage output of each sensor. You would adjust the
>> carbs until each one delivered the same voltage.
>>
>> I don't think it matters what the voltage is, you just want them to
>> be the same. If you adjust at a low RPM then the voltage would be
>> different from an adjustment at a high RPM - that's all - being the
>> same number is the important thing. Seems like this should work just
>> fine and the hardware parts are available at your pick & pull.
>>
>> Ok, now does this seem feasible or not? Of course if you build one of
>> these it sould be known as an "Overkill" because that's what this
>> would be, but it could solve the problem of listening to the hiss if
>> hearing is a problem.
>>
>> Yes, I know about and own a Unisync and the Moss ad today featured
>> another similar device (Synchormeter) but neither are as
>> sophisticated as a duel(ing) MAF system!
>>
>> I'm not talking Megasquirt here although you will find a MAF sensor
>> in a Megasquirt setup.
>>
>> What do you think? Would this work? (I'm not looking for investors!!) LOL
>>
>>
>> Tim Collins
>> http://www.flickr.com/photos/12702006 at N07/sets/
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