Diaphragm Type Carbs?

Moby Dick /
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I know some people have run diaphragm type carbs (Tillotson, Tecumeseh, etc.), but I haven't been able to find much info about them. As as I can tell, here are the deets:

Pros:

-Cheap. Like, really cheap.

-No jets, so they're super easy to adjust.

-No float bowl, so you can mount them in whatever position you want.

-Readily available parts.

-Super small.

-Really lightweight

-Not gravity fed, so you can get creative with your mounting position

Cons:

-You need to drill your case to accept a vacuum nipple.

-Possibly not quite as tunable? (only "low speed" and "hi speed" settings, as opposed to the multiple circuits on the nicer Mikunis and Dellortos)

-Apparently kinda weird throttle cable setup.

-No one seems to know much about them, so good luck getting help tuning it.

-???

So who's used one? How do they compare to the usual Mikuni's, Dellortos, OKO's, etc. in terms of performance and ease of tuning?

My assumption would be, since they typically seem to be used on engines intended to run steady state (small aircraft, lawn mowers, weed whackers, stationary engines, etc.), their transient throttle response might not be fantastic. They also seem to be mostly used in a narrow RPM band, so I would guess they are difficult to tune for a wide range of engine speeds. That said, I know they're pretty popular among kart racing dudes because the lateral G's don't cause problems like they do in float carbs. So, what's the deal? If I could swap in one of these bad boys and never have to deal with jets again, I would be a happy man.

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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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