SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
#526
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
Have not a clue.... Only that in a RCuniverse walbro to Zema conversion they were equal....
so I ASSuME they are the same...
I saw the M&M site but wasn't sure what the walbro "part" meant....(a actual carb, or carb kit parts ect)
Here is one place that gives cross reference: http://www.manddsmallengine.com/carburetors/zama.html
I know ther is also a very good one on RCuni... can't find it right now though.
CARBURETOR Cross Reference WALBRO to ZAMA
RYOBI/MTD
MODEL WALBRO ZAMA
STRING TRIMMER WT-456 > C1Q-P8
STRING TRIMMER WT-827 > C1U-P10A
STRING TRIMMER W/ GOV. WT-455 > C1U-P11B
STRING TRIMMER WT-827 > C1U-P14A
C1Q Butterfly
Diaphragm Carburetor
Carburetor Type Engine Size Throttle Bore Diameter Venturi Diameter Mm
C1Q 14-50CC 11MM 6.5
C1Q 14-50CC 12.7MM 8.0, 9.5
C1Q 14-50CC 14MM 8.0, 9.0, 9.5, 10.0, 11.0
C1Q 14-50CC 16MM 9.5, 10.0, 11.0, 12.5, 13.5, 14.0
Applications: String Trimmers, Chain Saws, Blowers , Hedgetrimmers & Edgers
Carburetor Type Engine Size Throttle Bore Diameter Venturi Diameter Mm
C1M 14-50CC 14MM 8.0, 10.0
C1M 14-50CC 16MM 9.5, 11.0, 12.5, 13.5
Available Features:
Choke
Accelerator
Remote Primer
Pump-Side Primer
Metering-Side Primer
Tamper Resistant Limiter Caps
Twist Start ®
Simple Start ®
Multi-Position Throttle Control
Standard Features:
Zama Patented Friction Bar & Ring
Zama Metering Diaphragm Manufactured “ONE AT A TIMEâ€
Zama Manufactured Mixture Needles, Shafts and Nozzles.
not sure how the Available features become on the carb though....
so I ASSuME they are the same...
I saw the M&M site but wasn't sure what the walbro "part" meant....(a actual carb, or carb kit parts ect)
Here is one place that gives cross reference: http://www.manddsmallengine.com/carburetors/zama.html
I know ther is also a very good one on RCuni... can't find it right now though.
CARBURETOR Cross Reference WALBRO to ZAMA
RYOBI/MTD
MODEL WALBRO ZAMA
STRING TRIMMER WT-456 > C1Q-P8
STRING TRIMMER WT-827 > C1U-P10A
STRING TRIMMER W/ GOV. WT-455 > C1U-P11B
STRING TRIMMER WT-827 > C1U-P14A
C1Q Butterfly
Diaphragm Carburetor
Carburetor Type Engine Size Throttle Bore Diameter Venturi Diameter Mm
C1Q 14-50CC 11MM 6.5
C1Q 14-50CC 12.7MM 8.0, 9.5
C1Q 14-50CC 14MM 8.0, 9.0, 9.5, 10.0, 11.0
C1Q 14-50CC 16MM 9.5, 10.0, 11.0, 12.5, 13.5, 14.0
Applications: String Trimmers, Chain Saws, Blowers , Hedgetrimmers & Edgers
Carburetor Type Engine Size Throttle Bore Diameter Venturi Diameter Mm
C1M 14-50CC 14MM 8.0, 10.0
C1M 14-50CC 16MM 9.5, 11.0, 12.5, 13.5
Available Features:
Choke
Accelerator
Remote Primer
Pump-Side Primer
Metering-Side Primer
Tamper Resistant Limiter Caps
Twist Start ®
Simple Start ®
Multi-Position Throttle Control
Standard Features:
Zama Patented Friction Bar & Ring
Zama Metering Diaphragm Manufactured “ONE AT A TIMEâ€
Zama Manufactured Mixture Needles, Shafts and Nozzles.
not sure how the Available features become on the carb though....
#527
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
Here's the only parts diagram I could find for Zama. It was from some 3rd party site. There doesn't seem to be an organized site with all the different carb's diagrams (for Zama). And looking at these detailed diagrams are the only way to answer questions such as the presense of an intake-only spring, or an accelerator pump. Anyway, here's the diagram.
#529
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
There was a guy earlier in this thread that posted a response from Zama saying that the diaphragm return spring is available if desired but that the diaphragm material was designed to be resilient enough to spring back on its own.
If you search back I think there was even a part number stated in the response.
Mike
If you search back I think there was even a part number stated in the response.
Mike
#530
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
ORIGINAL: kochj
I honestly do not know what I am looking at...or for...
could you tell me what you see???
THanks..
I honestly do not know what I am looking at...or for...
could you tell me what you see???
THanks..
Optech: Wouldn't it be nice if one could search WITHIN a thread for something? Or, can it be done easily? Maybe so, and I'm just not aware. Thanks!
#531
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
The internals.....
Got 2-of them... @15$ per carb, it was worth a try...
The diaphram is 2-or more clear stiff plastic...
Got 2-of them... @15$ per carb, it was worth a try...
The diaphram is 2-or more clear stiff plastic...
#532
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
Do you guys know if the 2nd small brass outlet/inlet is if you wanted to install a primer pump ?? (In the 2nd picture right next to the low needle)
And I will have to crimp this off?
I don't think it is for intake tube to connect to?
I would think the carb would be like the Walbro and you have to have the tube line up on the base of the carb where there is a little hole, for intake pressure tube..
Anyone care to jump in on this one?
And I will have to crimp this off?
I don't think it is for intake tube to connect to?
I would think the carb would be like the Walbro and you have to have the tube line up on the base of the carb where there is a little hole, for intake pressure tube..
Anyone care to jump in on this one?
#533
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
It's a little hard to follow your questions because when you ask about a little hole, you called it a tube. But when REALLY referring to a tube, you called it an inlet. But I probably suffer from a little Aspergers, so it's my problem, not yours.
Anyway, I think you're correct. Just crimp & solder the straight tube. Or cap it off with one of those little caps. This means to start the engine you'll need to be able to cover the venturi with your finger. Turn off the ignition, go to WOT, and flip the prop until your finger is wet. Then it should start. If you actually use the primer as intended, this procedure MAY not be necessary.
Yes, the little hole in the base is the impulse input. It usually just routes to the crankcase. In 4 stroke applications, it goes to the intake stack.
In picture #2, there is a little hole in the face of the base. This hole lines up with the cross shaft of the throttle plate. Look in this hole as you move the throttle to see if there is a little brass plug moving up and down. If it's there, it means you have an accelerator pump.
Anyway, I think you're correct. Just crimp & solder the straight tube. Or cap it off with one of those little caps. This means to start the engine you'll need to be able to cover the venturi with your finger. Turn off the ignition, go to WOT, and flip the prop until your finger is wet. Then it should start. If you actually use the primer as intended, this procedure MAY not be necessary.
Yes, the little hole in the base is the impulse input. It usually just routes to the crankcase. In 4 stroke applications, it goes to the intake stack.
In picture #2, there is a little hole in the face of the base. This hole lines up with the cross shaft of the throttle plate. Look in this hole as you move the throttle to see if there is a little brass plug moving up and down. If it's there, it means you have an accelerator pump.
#534
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
In this picture, I have at the tip of this screw driver? what? = A primer tube that I should crimp off? Correct?
#536
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
The tip of the driver must be where a hole would be drilled and the accelerator pump would be, correct?
So if mine doens't have one, is there a issue with that??
Will there be a issue with tank placement??
What purpose of a accelerator pump?
Fuel delivery? Attomization?
Thanks..
So if mine doens't have one, is there a issue with that??
Will there be a issue with tank placement??
What purpose of a accelerator pump?
Fuel delivery? Attomization?
Thanks..
#539
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
On a Walbro, if there is a hole that exposes the butterfly shaft on the gasket face of the carb, it is has a accellerator pump. The pump is a spring loaded piston that moves on a flat spot on the shaft. It looks like the Zama might be the same from your picture.
#540
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
ORIGINAL: kochj
The tip of the driver must be where a hole would be drilled and the accelerator pump would be, correct?
So if mine doens't have one, is there a issue with that??
Will there be a issue with tank placement??
What purpose of a accelerator pump?
Fuel delivery? Attomization?
Thanks..
The tip of the driver must be where a hole would be drilled and the accelerator pump would be, correct?
So if mine doens't have one, is there a issue with that??
Will there be a issue with tank placement??
What purpose of a accelerator pump?
Fuel delivery? Attomization?
Thanks..
#542
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
Okay....It does have a pump.......
I cancelled my order from pats small engine shop in Issanti MN....
The reason... I was told it was on back order for 2-4 weeks...
What they didn't know, is that the carb. is discontinued, and they may never recieve the delivery of that
particular walbro carb.......
The woman I spoke with was very nice, and if I still want to get that walbro carb, I will call them up again...
I do believe the zama will work just as good as the walbro....I just have to test it out...
I have a OS 1.60 gemini twin, that already has a C&H ignition, and I have to come up with a way to mount both carbs on it...
If I could have someone machine up a mount for a single carb attachment, it would be quite easy (hint hint)
I have always found one cyl in this engine to be diff than the other....Being I will have gasoline in it, I don't want to
take the chance of a leaned out run or cyl...
1-carb per cyl is the way to go IMHO.... Even though the new saito gas twin, has only 1-carb shared between the two cyl's...
I cancelled my order from pats small engine shop in Issanti MN....
The reason... I was told it was on back order for 2-4 weeks...
What they didn't know, is that the carb. is discontinued, and they may never recieve the delivery of that
particular walbro carb.......
The woman I spoke with was very nice, and if I still want to get that walbro carb, I will call them up again...
I do believe the zama will work just as good as the walbro....I just have to test it out...
I have a OS 1.60 gemini twin, that already has a C&H ignition, and I have to come up with a way to mount both carbs on it...
If I could have someone machine up a mount for a single carb attachment, it would be quite easy (hint hint)
I have always found one cyl in this engine to be diff than the other....Being I will have gasoline in it, I don't want to
take the chance of a leaned out run or cyl...
1-carb per cyl is the way to go IMHO.... Even though the new saito gas twin, has only 1-carb shared between the two cyl's...
#543
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
If I go the twin carb route, I will have to come up with a altered intake pipe...
Has anyone, or does anyone know if SS tubing can be used in a copper pipe flange maker?
Or is there a need for a specialized one??
Or perhaps I could use copper tubbing?
Has anyone, or does anyone know if SS tubing can be used in a copper pipe flange maker?
Or is there a need for a specialized one??
Or perhaps I could use copper tubbing?
#545
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
ORIGINAL: Evert1969
I've read the posts in this forum and results are in this movie: http://www.youtube.com/watch?v=aXXA8ZrBD4Y
Thanks for all the advises.
I've read the posts in this forum and results are in this movie: http://www.youtube.com/watch?v=aXXA8ZrBD4Y
Thanks for all the advises.
Mike
#546
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
The needles didn't seem to be right yet.... (in the video)
...... Thank you for posting the link!...
Does anyone know where the best place to get the Rxcell ignitions with the 1/32 boot (or is it 1/4)
...... Thank you for posting the link!...
Does anyone know where the best place to get the Rxcell ignitions with the 1/32 boot (or is it 1/4)
#547
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
These people have a good track record and excellent service
http://www.valleyviewrc.com/RCEXL%20Ignitions.htm
http://www.valleyviewrc.com/RCEXL%20Ignitions.htm
#548
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
Thanks wayne..
Looks like they supply the regular sizes....
I am looking for the 1/4-32 size set to go...
I found this site....
Agape Racing and Hobby has one already to go....
No need to buy additional parts and hastle...
1/4-32 90 Deg RCEXL Ignition System-Single Cyl.
1/4-32 Mini Spark Plug-Single Cylinder-90 Degree
55$ + shipping...
Looks like they supply the regular sizes....
I am looking for the 1/4-32 size set to go...
I found this site....
Agape Racing and Hobby has one already to go....
No need to buy additional parts and hastle...
1/4-32 90 Deg RCEXL Ignition System-Single Cyl.
1/4-32 Mini Spark Plug-Single Cylinder-90 Degree
55$ + shipping...
#550
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RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
ORIGINAL: kochj
Thanks wayne..
Looks like they supply the regular sizes....
I am looking for the 1/4-32 size set to go...
I found this site....
Agape Racing and Hobby has one already to go....
No need to buy additional parts and hastle...
1/4-32 90 Deg RCEXL Ignition System-Single Cyl.
1/4-32 Mini Spark Plug-Single Cylinder-90 Degree
55$ + shipping...
Thanks wayne..
Looks like they supply the regular sizes....
I am looking for the 1/4-32 size set to go...
I found this site....
Agape Racing and Hobby has one already to go....
No need to buy additional parts and hastle...
1/4-32 90 Deg RCEXL Ignition System-Single Cyl.
1/4-32 Mini Spark Plug-Single Cylinder-90 Degree
55$ + shipping...
CAll them back and ask them if they do the soldering of the stainless steel 1/4-32 metal shroud themselves. And if it's the RCEXL kit. And most importantly, ask them if they're willing to put reinforcement strips soldered onto the 45% angles on the metal shrouds (2x 45 =90 degrees overall). If not, there's a danger of the solder joint breaking during flight. That has happened to me twice. When CH Ignition was in business, they used to reinforce mine for a nominal fee, by soldering a double across the solder joint. And that turned out to be worth a fortune in reliability.
If you're not sure what I'm talking about, I can supply a photo, or a drawing.