Re: Diaphragm Type Carbs?

#CrazyWayne™ rocks. #CrazyWayne /
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A cut and past from my profile info.

Tillotson racing carbs

http://www.tillotson-racing.com/products/precision-jet-remote-jet-controller-sa-502

49cc up to 80c V1L, Honda PA, pug 103 & AV10 moby with stock cases.

Venturi 18mm throttle Bore 22mm good carb for a 49cc street riper.

http://www.tillotson-racing.com/products/hw-17a

Venturi 19.8mm throttle Bore 25.40mm

http://www.tillotson-racing.com/products/hl-334-carburettor

49cc spinning12K+ RPM or over 60cc, big reeds

Venturi Diameter 20mm throttle Bore Diameter 26mm

http://www.tillotson-racing.com/products/hw-10b-avenger-class

http://www.tillotson-racing.com/collections/racing-1/products/hc-103a-carburettor-kf3

63cc and up or track 49cc setup.

Venturi 22.50mm throttle Bore 25.40mm

http://www.tillotson-racing.com/products/hl-384a-carburettor

Venturi 22.9mm throttle Bore 25.4mm

http://www.tillotson-racing.com/products/hl-334ab-carburettor-1

The newer tillys venturi shape and bleed ports work so much better in the mid-range down to 1/3 throttle.

Thy get funky when your not quit on the pipe at lower rpms but that how it is with all carbs.

The spring rate popoff is the key to the mid-rang jetting = to the slide and needle setting on a standard carbs tuning.

What throws off tuners is the hi low mix adjustments.

You have to think of its fuel feed as tho it's running down a long pipe.

The first part of the feed pipe has a 4 way tap with the left tap feeding the low speed and the right feeding the high speed.

After the 4 way tap you have a flow diverting presser regulating bypass tap.

The flow diverting presser regulating bypass tap controls all flow / presser and mid rang mix adjustments, AKA the popoff spring.

But if your hi low 4 way tap up stream is using more or less fuel you will need to change your popoff accordingly for the mid rang jetting mix.

So the hi low jetting mix titer-totters with the mid-rang jetting mix.

And the low RPM and hi RPM mix adjustments have a offset titer-totter with each other.

The upper mid-rang tends to adjust a touch with the hi RPM mix adjustment.

So a rich low can give you a lean hi, but a rich hi will make your low just a pinch lean.

Most fuck up by having a rich low and go so rich on the hi speed adjustment that it makes the lower mid-rang lean.

http://ssc.icepts.com/pdf/tillotson.pdf (edited)

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Subject Written By Posted
  Diaphragm Type Carbs?Topic by: Moby Dick Moby Dick 02/24/15 09:33AM
  Re: Diaphragm Type Carbs?Re: Moby Dick Moby Dick 02/24/15 09:40AM
  Re: Diaphragm Type Carbs?Re: Alex Degnes Alex Degnes 02/24/15 11:24AM
  Re: Diaphragm Type Carbs?Re: Flagrant - Flagrant - 02/24/15 12:01PM
  Re: Diaphragm Type Carbs?Re: Moby Dick Moby Dick 02/24/15 01:11PM
  Re: Diaphragm Type Carbs?Re: Flagrant - Flagrant - 02/24/15 02:29PM
  Re: Diaphragm Type Carbs?Re: Jason Grimm Jason Grimm 02/24/15 03:47PM
  Re: Diaphragm Type Carbs?Re: Moby Dick Moby Dick 02/24/15 04:06PM
  Re: Diaphragm Type Carbs?Re: Derek Stahl Derek Stahl 02/24/15 04:04PM
  Re: Diaphragm Type Carbs?Re: Born to be WillD Born to be WillD 02/24/15 05:36PM
  Re: Diaphragm Type Carbs?Re: Moby Dick Moby Dick 02/24/15 07:02PM
  Re: Diaphragm Type Carbs?Re: Born to be WillD Born to be WillD 02/25/15 02:41PM
  Re: Diaphragm Type Carbs?Re: Jason Grimm Jason Grimm 02/25/15 10:13PM
  Re: Diaphragm Type Carbs?Re: Flagrant - Flagrant - 02/25/15 11:11PM
  Re: Diaphragm Type Carbs?Re: Jason Grimm Jason Grimm 02/26/15 06:46PM
  Re: Diaphragm Type Carbs?Re: Flagrant - Flagrant - 02/26/15 09:30PM
  Re: Diaphragm Type Carbs?Re: Born to be WillD Born to be WillD 02/24/15 05:45PM
  Re: Diaphragm Type Carbs?Re: peter heid peter heid 02/24/15 07:08PM
  Re: Diaphragm Type Carbs?Re: Rebel Moby Rebel Moby 02/24/15 10:23PM
  Re: Diaphragm Type Carbs?Re: Giovanni Giarratana Giovanni Giarratana 02/24/15 10:40PM
  Re: Diaphragm Type Carbs?Re: #CrazyWayne™ rocks. #CrazyWayne #CrazyWayne™ rocks. #CrazyWayne 02/24/15 11:36PM
  Re: Diaphragm Type Carbs?Re: John Joedicke John Joedicke 02/25/15 07:27AM
  Re: Diaphragm Type Carbs?Re: Moby Dick Moby Dick 02/25/15 08:41AM
  Re: Diaphragm Type Carbs?Re: Flagrant - Flagrant - 02/25/15 12:32PM
  Re: Diaphragm Type Carbs?Re: Alex Degnes Alex Degnes 02/25/15 12:37PM
  Re: Diaphragm Type Carbs?Re: Moby Dick Moby Dick 02/25/15 02:13PM
  Re: Diaphragm Type Carbs?Re: Giovanni Giarratana Giovanni Giarratana 02/25/15 01:13PM
  Re: Diaphragm Type Carbs?Re: Alex Degnes Alex Degnes 02/25/15 01:22PM
  Re: Diaphragm Type Carbs?Re: Flagrant - Flagrant - 02/25/15 01:33PM
  Re: Diaphragm Type Carbs?Re: Jonathan Eaton Jonathan Eaton 02/25/15 04:23PM
  Re: Diaphragm Type Carbs?Re: Alex Degnes Alex Degnes 02/25/15 04:36PM
  Re: Diaphragm Type Carbs?Re: Jonathan Eaton Jonathan Eaton 02/25/15 05:37PM
  Re: Diaphragm Type Carbs?Re: Jonathan Eaton Jonathan Eaton 02/25/15 05:38PM
  Re: Diaphragm Type Carbs?Re: Moby Dick Moby Dick 02/25/15 06:52PM
  Re: Diaphragm Type Carbs?Re: Jonathan Eaton Jonathan Eaton 02/25/15 07:24PM
  Re: Diaphragm Type Carbs?Re: Alex Degnes Alex Degnes 02/25/15 07:44PM
  Re: Diaphragm Type Carbs?Re: #CrazyWayne™ rocks. #CrazyWayne #CrazyWayne™ rocks. #CrazyWayne 02/25/15 08:02PM
  Re: Diaphragm Type Carbs?Re: Giovanni Giarratana Giovanni Giarratana 02/25/15 09:27PM
  Re: Diaphragm Type Carbs?Re: Jonathan Eaton Jonathan Eaton 02/25/15 09:50PM

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