RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version


90 Dgree Muffler Adapters
Seller:  RC Specialties
Details:   $19.95   |  6/6/2013   |  Classified Ad
We will rotate YOUR AD in this spot if you select "Forum Featured" when placing or editing your ad!

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Conversions >> RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
Page: <<   < prev  19 20 21 [22] 23 24 25 26 27 28   next >   >>  

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/10/2011 9:33 PM   
Pull Up Now!



Posts: 475
Score: 140
Joined: 8/20/2008
Last Login: 6/17/2013
From: Northfield, MN, USA
Status: offline
quote:

ORIGINAL: kochj

I honestly do not know what I am looking at...or for...
could you tell me what you see???

THanks..


that's why I was wondering if there is an organized Zama parts site that has diagrams (exploded views) of their various carbs. Because the picture I DID find was useless....too fuzzy to read anything on there.

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!

Hide Signatures

(in reply to kochj)
       Post #: 526

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/13/2011 10:26 PM   
kochj


 

Posts: 3677
Score: 143
Joined: 12/5/2005
Last Login: 6/15/2013
From: Victoria, MN, USA
Status: offline 		The internals.....
Got 2-of them... @15$ per carb, it was worth a try...
The diaphram is 2-or more clear stiff plastic...


Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize
Click to see fullsize image.
Click for fullsize


_____________________________

If you can''''t dazzle em with brilliance,baffle em with BS

Hide Signatures

(in reply to Pull Up Now!)
       Post #: 527

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/14/2011 5:19 AM   
kochj


 

Posts: 3677
Score: 143
Joined: 12/5/2005
Last Login: 6/15/2013
From: Victoria, MN, USA
Status: offline 		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?

_____________________________

If you can''''t dazzle em with brilliance,baffle em with BS

Hide Signatures

(in reply to kochj)
       Post #: 528

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/14/2011 12:43 PM   
Pull Up Now!



Posts: 475
Score: 140
Joined: 8/20/2008
Last Login: 6/17/2013
From: Northfield, MN, USA
Status: offline 		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.

Hide Signatures

(in reply to kochj)
       Post #: 529

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/14/2011 4:40 PM   
kochj


 

Posts: 3677
Score: 143
Joined: 12/5/2005
Last Login: 6/15/2013
From: Victoria, MN, USA
Status: offline 		In this picture, I have at the tip of this screw driver? what? = A primer tube that I should crimp off? Correct?

Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

If you can''''t dazzle em with brilliance,baffle em with BS

Hide Signatures

(in reply to Pull Up Now!)
       Post #: 530

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/14/2011 4:42 PM   
kochj


 

Posts: 3677
Score: 143
Joined: 12/5/2005
Last Login: 6/15/2013
From: Victoria, MN, USA
Status: offline 		In this picture; I have at the tip of my screw driver....??
The hole that lines up with the intake manifold??

Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

If you can''''t dazzle em with brilliance,baffle em with BS

Hide Signatures

(in reply to kochj)
       Post #: 531

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/14/2011 5:20 PM   
kochj


 

Posts: 3677
Score: 143
Joined: 12/5/2005
Last Login: 6/15/2013
From: Victoria, MN, USA
Status: offline 		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..

Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

If you can''''t dazzle em with brilliance,baffle em with BS

Hide Signatures

(in reply to kochj)
       Post #: 532

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/14/2011 5:42 PM   
kochj


 

Posts: 3677
Score: 143
Joined: 12/5/2005
Last Login: 6/15/2013
From: Victoria, MN, USA
Status: offline 		I just ordered up 2-WT 456's .....from the the Isanti MN store....
I will try the Zama carbs either way....



_____________________________

If you can''''t dazzle em with brilliance,baffle em with BS

Hide Signatures

(in reply to kochj)
       Post #: 533

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/14/2011 5:50 PM   
w8ye



Posts: 36486
Score: 318
Joined: 12/11/2001
Last Login: 6/19/2013
From: Shelby, OH, USA
Status: offline 		The accelerator pump squirts a little extra fuel into the carb throat when you advance the throttle.


_____________________________

Attended the CutFinger Institute of DirtNap University for years but never did graduate....
Recipient, Mangledhand award August 2008
Club Saito Member #7
Original AMA #31261

Hide Signatures

(in reply to kochj)
       Post #: 534

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/15/2011 3:20 AM   
motorhd


 

Posts: 115
Score: 100
Joined: 11/9/2004
Last Login: 6/18/2013
From: Gresham, OR, USA
Status: offline 		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.

Hide Signatures

(in reply to w8ye)
       Post #: 535

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/15/2011 4:16 AM   
Pull Up Now!



Posts: 475
Score: 140
Joined: 8/20/2008
Last Login: 6/17/2013
From: Northfield, MN, USA
Status: offline
quote:

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..


No, that is not correct. As I said earlier, look for a hole on the mounting face of the carb, that lines up with the throttle plate's cross shaft. When I say "lines up", I mean the two holes cross each other. In your picture, I'm pretty sure I see just such a hole. Look for a little brass piston moving up & down when you rotate the throttle lever. Also, usually, you'll feel some spring tension as you rotate the shaft. Most people assume that is the external return torsion spring they're feeling. But if you remove (or unhook) the external throttle return spring, you'll still feel spring tension on the throttle. That is the accelerator pump. There's a compression spring under the little piston that keeps the plug pushing up against the throttle plate shaft.

Hide Signatures

(in reply to kochj)
       Post #: 536

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/15/2011 12:06 PM   
Pull Up Now!



Posts: 475
Score: 140
Joined: 8/20/2008
Last Login: 6/17/2013
From: Northfield, MN, USA
Status: offline
quote:

ORIGINAL: kochj

In this picture; I have at the tip of my screw driver....??
The hole that lines up with the intake manifold??



Attachments
Click to see fullsize image.
Click for fullsize


Hide Signatures

(in reply to kochj)
       Post #: 537

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/16/2011 2:07 PM   
kochj


 

Posts: 3677
Score: 143
Joined: 12/5/2005
Last Login: 6/15/2013
From: Victoria, MN, USA
Status: offline 		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...

_____________________________

If you can''''t dazzle em with brilliance,baffle em with BS

Hide Signatures

(in reply to Pull Up Now!)
       Post #: 538

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/16/2011 2:10 PM   
kochj


 

Posts: 3677
Score: 143
Joined: 12/5/2005
Last Login: 6/15/2013
From: Victoria, MN, USA
Status: offline 		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?

_____________________________

If you can''''t dazzle em with brilliance,baffle em with BS

Hide Signatures

(in reply to kochj)
       Post #: 539

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/16/2011 6:40 PM   
optech



Posts: 521
Score: 105
Joined: 1/26/2002
Last Login: 6/19/2013
From: San Diego, CA, USA
Status: offline 		Way back on page 11 is where Evert1969 talks about the message he got from Zama about the spring.

Mike

Hide Signatures

(in reply to kochj)
       Post #: 540

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/16/2011 6:52 PM   
optech



Posts: 521
Score: 105
Joined: 1/26/2002
Last Login: 6/19/2013
From: San Diego, CA, USA
Status: offline
quote:

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.


Here's where he posted a video of his little Saito 80 running with Zama carb.

Mike

Hide Signatures

(in reply to Evert1969)
       Post #: 541

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/17/2011 5:37 AM   
kochj


 

Posts: 3677
Score: 143
Joined: 12/5/2005
Last Login: 6/15/2013
From: Victoria, MN, USA
Status: offline 		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)

_____________________________

If you can''''t dazzle em with brilliance,baffle em with BS

Hide Signatures

(in reply to optech)
       Post #: 542

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/17/2011 5:42 AM   
w8ye



Posts: 36486
Score: 318
Joined: 12/11/2001
Last Login: 6/19/2013
From: Shelby, OH, USA
Status: offline 		These people have a good track record and excellent service

http://www.valleyviewrc.com/RCEXL%20Ignitions.htm


_____________________________

Attended the CutFinger Institute of DirtNap University for years but never did graduate....
Recipient, Mangledhand award August 2008
Club Saito Member #7
Original AMA #31261

Hide Signatures

(in reply to kochj)
       Post #: 543

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/17/2011 7:33 PM   
kochj


 

Posts: 3677
Score: 143
Joined: 12/5/2005
Last Login: 6/15/2013
From: Victoria, MN, USA
Status: offline 		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...

_____________________________

If you can''''t dazzle em with brilliance,baffle em with BS

Hide Signatures

(in reply to w8ye)
       Post #: 544

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/17/2011 9:37 PM   
w8ye



Posts: 36486
Score: 318
Joined: 12/11/2001
Last Login: 6/19/2013
From: Shelby, OH, USA
Status: offline 		Jim Willis at Agape has been a good source for parts


_____________________________

Attended the CutFinger Institute of DirtNap University for years but never did graduate....
Recipient, Mangledhand award August 2008
Club Saito Member #7
Original AMA #31261

Hide Signatures

(in reply to kochj)
       Post #: 545

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/18/2011 2:08 AM   
Pull Up Now!



Posts: 475
Score: 140
Joined: 8/20/2008
Last Login: 6/17/2013
From: Northfield, MN, USA
Status: offline
quote:

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...


You must have called them? All I saw on their site was a bunch of cute dogs and some RC engines.

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.

Hide Signatures

(in reply to kochj)
       Post #: 546

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/18/2011 4:39 AM   
w8ye



Posts: 36486
Score: 318
Joined: 12/11/2001
Last Login: 6/19/2013
From: Shelby, OH, USA
Status: offline 		This happened to me too


_____________________________

Attended the CutFinger Institute of DirtNap University for years but never did graduate....
Recipient, Mangledhand award August 2008
Club Saito Member #7
Original AMA #31261

Hide Signatures

(in reply to Pull Up Now!)
       Post #: 547

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/30/2011 7:14 PM   
CH Ignitions


 

Posts: 314
Score: 420
Joined: 8/20/2009
Last Login: 6/16/2013
From: West Palm Beach, FL, USA
Status: offline 		.

< Message edited by i7x58 -- 2/1/2011 9:27 AM >

_____________________________

www.ch-ignitions.com

Hide Signatures

(in reply to kochj)
       Post #: 548

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/30/2011 7:36 PM   
w8ye



Posts: 36486
Score: 318
Joined: 12/11/2001
Last Login: 6/19/2013
From: Shelby, OH, USA
Status: offline 		There is not supposed to be any difference in the crankcase breathers of the FG-20 and the FA-125A. They have the same part number.

There has been a problem with the Saito breather fittings as some have a burr across the hole caused by bad tooling on the bar lathe that makes them.

You can take a scribe and insert into the hole and open it up by removing the flashing that was pushed over the hole


_____________________________

Attended the CutFinger Institute of DirtNap University for years but never did graduate....
Recipient, Mangledhand award August 2008
Club Saito Member #7
Original AMA #31261

Hide Signatures

(in reply to CH Ignitions)
       Post #: 549

RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION - 1/30/2011 7:59 PM   
CH Ignitions


 

Posts: 314
Score: 420
Joined: 8/20/2009
Last Login: 6/16/2013
From: West Palm Beach, FL, USA
Status: offline 		W8ye,

Yes you are right, After you said this...I went and took it out and look at it. I could see the othe end that the hole is smaller, I took a file and got some off and opened the hole. Here is a pic on how it was before. Small hole is FG 20. Now both are the same cca 2mm, before was 1.25mm and I thought that Saito did it for a reason. I was thinking to try the engine after is set and tuned with the bigger hole to see if make any diffrence. In my mind it was to keep in some oil for lubeing the inside since is a gas and fuel does not run as much as Glow. well now I open it ...will see what  happends. You have one of those, yours was big hole from start?


Adrian

Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

www.ch-ignitions.com

Hide Signatures

(in reply to w8ye)
       Post #: 550

Page:   <<   < prev  19 20 21 [22] 23 24 25 26 27 28   next >   >>  
All Forums >> Glow Engines, Gas Engines, Fuel &amp; Mfg Support Forums >> Engine Conversions >> RE: SMALL DISPLACEMENT FOUR STROKE GLOW TO GAS CONVERSION
Page: <<   < prev  19 20 21 [22] 23 24 25 26 27 28   next >   >>  




Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


4.239RCU1