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Old 12-11-2017, 09:02 AM
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Ultracon46
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Default Small engine carb?

Do they make carbs that fit small (1.5cc) diesels? I would love to put a throttle on my old DC Sabre.....
Old 12-11-2017, 12:34 PM
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1QwkSport2.5r
 
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I’ve heard of some guys using small Enya carbs in the past. Maybe a carb from
an .09 might fit? You’d have to compare the neck size of the carb to the neck size on the engine for starters, and probably limit throttle opening a bit since Diesels don’t need as much air/fuel as a glow does.
Old 12-11-2017, 01:25 PM
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Mr Cox
 
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I have used the Enya .09 carb in both in the PAW .09 and the Philtech 1.5cc. It is rather crude with an adjustable airbleed only, but a diesel engine doesn't need anything more sophisticated than that. In fact it gives you more to tune on than the stock PAW carb that only has a fixed airbleed carb. You don't need to add any restrictor to the carb, but you can put the end of "spraybar" further in, which then helps with the fuel draw and there is no need for any muffler pressure to the tank.
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Old 12-11-2017, 03:59 PM
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qazimoto
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I have an R/C Oliver Tiger Cub (1.5cc or .09) diesel in my collection. It was fitted with an ENYA .09 carby at the factory. If they were good enough for John Oliver then they must work pretty well :-)
Old 12-14-2017, 04:04 AM
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controlliner
 
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I have yet to find a carb to fit any of my DC engines.
Old 12-14-2017, 03:24 PM
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AVAILABLE: New Enya .11 Carburetor. Base 8.7mm diameter, barrel opening 4mm. Also New .09 Needle valve.
Not available to anyone that will refer to it as a "carby"! [email protected]
Old 12-14-2017, 03:45 PM
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Originally Posted by [email protected]
AVAILABLE: New Enya .11 Carburetor. Base 8.7mm diameter, barrel opening 4mm. Also New .09 Needle valve.
Not available to anyone that will refer to it as a "carby"! [email protected]
I don't want one, but "carby" is an Australism. Even so I'd have one somewhere off my Enya 11 glow which made a nice little class 1 c/l speed engine decades ago :-)
Old 12-14-2017, 10:14 PM
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qazimoto
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Originally Posted by controlliner
I have yet to find a carb to fit any of my DC engines.
I reckon that a chap could (if he thought about it a bit) come up with an adapter that could allow a small engine carby to fit a DC Sabre. Two different internal diameters joined by something. :-)
Old 12-14-2017, 10:54 PM
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As a last gasp to re-invigorate sales Dav-Cal were considering R/C carburettors for "DC" engines. Sadly it never came to pass.
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Old 12-16-2017, 06:26 PM
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Ultracon46
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The intake on the Sabre is about 7.5 mm o.d. If I can fit a brass tube or aluminum tube over that, then I can use an Enya .09 carb. But how to do that is the question. Probably too much heat for epoxy. Solder probably too brittle. Any ideas on how to attach a tube to the intake?
Old 12-16-2017, 08:08 PM
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qazimoto
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Originally Posted by Ultracon46
The intake on the Sabre is about 7.5 mm o.d. If I can fit a brass tube or aluminum tube over that, then I can use an Enya .09 carb. But how to do that is the question. Probably too much heat for epoxy. Solder probably too brittle. Any ideas on how to attach a tube to the intake?
Just get someone to machine you an Aluminium fitting with a 7.5mm hole one end and the ID of your carby the other. Wouldn't have to be too long, just a few mm for each end. Can you buy JB weld where you live? It's a "metallic" two part epoxy, wonderful stuff for glueing on carbys. Can be drilled tapped etc, and it's resistant to heat and all the modelling solvents.The yanks use it on model engines all the time. In Australia we can buy it at some Auto Supply shops or Jaycar the Electronics store chain. Otherwise Ebay is you friend. . .

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Old 12-16-2017, 11:26 PM
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Ultracon46
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I have JB Weld as a staple in my tools. Are you saying I should JB Weld the carb to the fitting over the hole the same size as the id on the shank of the carb? I was thinking about a tube that will slip over the intake "shaft" and I could fit the shank of the carb in the other end of the tube, contacting the intake. If the tube had some decent wall thickness I could thread two opposing holes and use set screws to hold the carb to the tube. I would JB Weld the tube over the intake shaft.
Old 12-17-2017, 01:56 AM
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qazimoto
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Originally Posted by Ultracon46
I have JB Weld as a staple in my tools. Are you saying I should JB Weld the carb to the fitting over the hole the same size as the id on the shank of the carb? I was thinking about a tube that will slip over the intake "shaft" and I could fit the shank of the carb in the other end of the tube, contacting the intake. If the tube had some decent wall thickness I could thread two opposing holes and use set screws to hold the carb to the tube. I would JB Weld the tube over the intake shaft.
Yep! Sounds good.

You could always soften the JB Weld with a paint stripper if you need to remove it at some time.
Old 12-18-2017, 05:36 AM
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Carby....Carby, Carby, Carby, Carby...take that!
Old 01-03-2018, 07:40 PM
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The AP .09 has a 9mm dia with a 4 or 5mm hole. It may work, although there is no air bleed. You might have to turn the 9 mm down to 7.5 mm to fit, from my understanding of what you have. They are usually cheap if you can find them..Looking at some examples of the Sabre, maybe a smaller .049 carb would be better, and the baloney cut end would have to be straightened.

Last edited by aspeed; 01-03-2018 at 07:56 PM.

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