Gas Engines Questions or comments about gas engines can be posted here

New SV Gassers

Reply
Old 09-02-2008, 10:52 PM
  #776
lotech
 
Join Date: Jun 2008
Location: red bluff, CA
Posts: 52
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers


Quote:
ORIGINAL: Ratchet

Hi Charley - yes, that's our next step. We're going to remove the carb and try cleaning it out. Like you said, perhaps there is some crap in there somewhere.

Thanks.
sorry that I forgot about one of my prior posts! On the 26 there is a side plate on the cylinder,I've found that gasket to leak and cause nonadjustable carbs also!!!!
check there before the carb tear down. hope this is of help,
lotech
lotech is offline  
Reply With Quote
Old 09-06-2008, 06:58 AM
  #777
sam.s.man
 
Join Date: May 2008
Location: Shah Alam, MALAYSIA
Posts: 61
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

Hi guys..
I'm about to purchase a SV26 engine. But can anyone help clarify if these 2 engines are actually the same engine..?

RCS/SV26 and Hobbycity SV26

According to the specs, RCS/SV26 =>2.8hp, Hobbycity SV26 =>2.35hp..and of course the price is different too..


Thanks
Sam
sam.s.man is offline  
Reply With Quote
Old 09-06-2008, 12:35 PM
  #778
Charley
 
Join Date: Dec 2001
Location: Kerrville, TX
Posts: 2,030
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers


Quote:
ORIGINAL: sam.s.man

Hi guys..
I'm about to purchase a SV26 engine. But can anyone help clarify if these 2 engines are actually the same engine..?

RCS/SV26 and Hobbycity SV26

According to the specs, RCS/SV26 =>2.8hp, Hobbycity SV26 =>2.35hp..and of course the price is different too..


Thanks
Sam
The buzz is that RCS had the factory make some changes to the engine. Dunno if it's true or hype to justify the higher price. I sure wish that someone would do a comparison of the two.

As an aside, it wouldn't make sense for the mfr to make two versions so..........
Charley is offline  
Reply With Quote
Old 09-06-2008, 01:55 PM
  #779
sam.s.man
 
Join Date: May 2008
Location: Shah Alam, MALAYSIA
Posts: 61
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

Could it be, one is a clone of the other...Just like in the case of DL/DA...
sam.s.man is offline  
Reply With Quote
Old 09-06-2008, 02:28 PM
  #780
ram3500-RCU
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers


Quote:
ORIGINAL: Great-North

i received my SV26 which is my first gasser. I am just wondering about the high low speed needles. I am wondering which one is the low end and which one is the high end. Also if there are any default settings for these needles. Thanks for your help.
Look closely next to the needles. It is on the block. I think high is the rear one,but check that for sure.
ram3500-RCU is offline  
Reply With Quote
Old 09-06-2008, 02:32 PM
  #781
ram3500-RCU
 
ram3500-RCU's Avatar
 
Join Date: Aug 2002
Location: n. canton, OH
Posts: 9,544
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers


Quote:
ORIGINAL: Ratchet

I'm hoping somebody here can help. A friend of mine in our club has one of these SV26 engines. It runs like CRAP. No matter what we do, we can't get it lean out. It transitions poorly, lousy top end, and is very hard to start. However, once started, it idles great. LOL.

We've tried all the normal stuff. Fully charged battery. Plug gap at .018. Pennzoil @ 30:1. Fresh gas. etc. Plug is black, but it's running so rich, nothing we can here.

When running, we're trying to lean it out, and moving the needle a very small amount (@ 1/16 of a turn), and the engine goes from slobbering rich to too lean and just dies. Engine doesn't seem hot.

Any ideas guys?
The early ones needed a timing adjustment. It affected top end and transition. I'll try to find the posts that talked about this fix. It is here somewhere. Mine was purchased just a couple months ago and is fine, so I think they got the feedback and fixed it at the factory.
ram3500-RCU is offline  
Reply With Quote
Old 09-11-2008, 11:36 AM
  #782
sam.s.man
 
Join Date: May 2008
Location: Shah Alam, MALAYSIA
Posts: 61
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

Has anyone flown a CMP Warhawk P40/73" with a SV26 engine.? I have the plane, and am planning to power it with SV26. How does it perform.? Is there any reserve power..?
sam.s.man is offline  
Reply With Quote
Old 09-11-2008, 12:05 PM
  #783
NM2K
 
Join Date: Jan 2002
Location: Ringgold, GA
Posts: 11,488
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

Considering that CMP recommends a 1.40 glow engine to power that model, I wouldn't be real optmistic about having any surplus power with a 1.40 gas/spark engine. But, what is enough power for you may not be enough power for me. There is still the subjective element to contend with.


Ed Cregger
NM2K is offline  
Reply With Quote
Old 09-11-2008, 12:17 PM
  #784
sam.s.man
 
Join Date: May 2008
Location: Shah Alam, MALAYSIA
Posts: 61
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

Then, might as well just go for a DL50 with a rev limiter installed...
sam.s.man is offline  
Reply With Quote
Old 09-11-2008, 02:23 PM
  #785
lotech
 
Join Date: Jun 2008
Location: red bluff, CA
Posts: 52
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers


Quote:
ORIGINAL: sam.s.man

Has anyone flown a CMP Warhawk P40/73" with a SV26 engine.? I have the plane, and am planning to power it with SV26. How does it perform.? Is there any reserve power..?
I have the cmp 73" with a 120 ax os. flies very well and fast. 10.5 Lbs.
I also have the sv 26 in a great planes super stearman 17 Lbs flies well.

so I am sure that the sv 26 would be great choice.

the only problem would be mounting the gasser. the plane has ply rail mounting for the engine as part of the main structure.
lotech is offline  
Reply With Quote
Old 09-11-2008, 08:02 PM
  #786
sam.s.man
 
Join Date: May 2008
Location: Shah Alam, MALAYSIA
Posts: 61
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

thanks lotech, for the info...
anyone else who actually flew a CMP P40/73" with the SV26 engine. I'd like to know if there is any reserve power..The engine I'm referring to, is a HobbyCity SV26cc engine, NOT the RCS/SV26 engine..
sam.s.man is offline  
Reply With Quote
Old 09-11-2008, 10:48 PM
  #787
lotech
 
Join Date: Jun 2008
Location: red bluff, CA
Posts: 52
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers


Quote:
ORIGINAL: sam.s.man

thanks lotech, for the info...
anyone else who actually flew a CMP P40/73" with the SV26 engine. I'd like to know if there is any reserve power..The engine I'm referring to, is a HobbyCity SV26cc engine, NOT the RCS/SV26 engine..
It will have plenty of reserve power!!

this plane only weighs in the 10Lb range and they rated it for too big of an engine.

both sv26's will turn a 16x8 prop at about 9000, as does my os 120 ax.

(I have the H.C. sv26) but, in a 17Lb stearman, and it pulls that fine!!
lotech is offline  
Reply With Quote
Old 09-12-2008, 04:14 AM
  #788
sam.s.man
 
Join Date: May 2008
Location: Shah Alam, MALAYSIA
Posts: 61
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

Thanks again lotech..
Nice to know there's plenty of reserve power. I'll go for the H.C SV26. The only problem now is, like you've said earlier, mounting the engine..
Has anyone done this before?
sam.s.man is offline  
Reply With Quote
Old 09-12-2008, 11:44 AM
  #789
hackinboy
 
Join Date: Feb 2007
Location: Pueblo West, CO
Posts: 21
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

I agree with Lotech that the SV will easily fly a 10 pound plane. I have one in the Stearman PT-17 at 14.5 pounds and it flies fine. I dont get near the RPMs out of it as him though. With a 15X8 APC i get about 6800rpm @ about 5000ft elevation. Id love to get 9000 though, maybe there is some more to squeeze out of that lil thing
hackinboy is offline  
Reply With Quote
Old 09-12-2008, 01:08 PM
  #790
lotech
 
Join Date: Jun 2008
Location: red bluff, CA
Posts: 52
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers


Quote:
ORIGINAL: hackinboy

I agree with Lotech that the SV will easily fly a 10 pound plane. I have one in the Stearman PT-17 at 14.5 pounds and it flies fine. I dont get near the RPMs out of it as him though. With a 15X8 APC i get about 6800rpm @ about 5000ft elevation. Id love to get 9000 though, maybe there is some more to squeeze out of that lil thing

at your elevation you probably won't.I live at about 200' el. also timing is critical on these nice little engines!

my stearman was weighed on pro scale at just under 17 Lbs.,has yours been weighed accuratly, if so how did you come in so light??
lotech is offline  
Reply With Quote
Old 09-12-2008, 02:23 PM
  #791
hackinboy
 
Join Date: Feb 2007
Location: Pueblo West, CO
Posts: 21
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

I assumed you had the super stearman and i have the PT-17. I think you are right about the altitude. I havent messed with the timing to see if i can get more but will one of these days
hackinboy is offline  
Reply With Quote
Old 09-12-2008, 07:43 PM
  #792
lotech
 
Join Date: Jun 2008
Location: red bluff, CA
Posts: 52
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers


Quote:
ORIGINAL: hackinboy

I assumed you had the super stearman and i have the PT-17. I think you are right about the altitude. I havent messed with the timing to see if i can get more but will one of these days

dummy meLOL I didn't read that ya had the PT-17!!!! duh on me!!!

the timing really helps on these engines, GOOD luck, and tnx!!!!
lotech is offline  
Reply With Quote
Old 09-24-2008, 09:04 PM
  #793
chutt
 
chutt's Avatar
 
Join Date: Nov 2003
Location: CuritibaPR, BRAZIL
Posts: 148
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

Hi!

I received my SV 26cc from HobbyCity last week. Is my first gas engine.
Beautiful engine, but I have some questions about his Walbro carb.
I take some pictures of his carb...
Point 1: what line I connect in this tube?
Point 2: in this tube I suppose that I connect the fuel line coming from tank. It´s ok?
Point 3: from where this tube comes?

Last questions... This carb don´t have choke. This bulb have the same finality? What´s the procedure do start this engine? How can I start this engine in a full cowled airplane?

Thank you!

Andre.

Attached Thumbnails
Click image for larger version

Name:	Ay75810.jpg
Views:	19
Size:	52.9 KB
ID:	1040422   Click image for larger version

Name:	Dy78430.jpg
Views:	23
Size:	58.2 KB
ID:	1040423   Click image for larger version

Name:	Qo40965.jpg
Views:	21
Size:	57.0 KB
ID:	1040424  
chutt is offline  
Reply With Quote
Old 09-24-2008, 09:11 PM
  #794
chutt
 
chutt's Avatar
 
Join Date: Nov 2003
Location: CuritibaPR, BRAZIL
Posts: 148
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

Here is more pictures of my SV carb...
On top of carb is written:
WT 817
741

I tryed, but don´t find information about this carb...

Cheers,

Andre.
Attached Thumbnails
Click image for larger version

Name:	Db86040.jpg
Views:	22
Size:	43.2 KB
ID:	1040425   Click image for larger version

Name:	Up47782.jpg
Views:	22
Size:	49.1 KB
ID:	1040426   Click image for larger version

Name:	Wc77532.jpg
Views:	19
Size:	55.7 KB
ID:	1040427  
chutt is offline  
Reply With Quote
Old 09-24-2008, 11:37 PM
  #795
Charley
 
Join Date: Dec 2001
Location: Kerrville, TX
Posts: 2,030
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

That carb isn't the same as the one that came on my SV26 engine. That bulb looks like a priming bulb as is sometimes used on some lawn mower engines. Is it soft? If so, the idea is that you push on it to prime the engine. The black barb fitting is where you connect the fuel line from the tank. I don't know what the brass fitting connects to, if anything. It may be a one-way vent for the bulb but I'm not sure. Push the bulb flat and see if the brass fitting sucks air when you release the bulb. The tube in Point #3 may be coming from the bulb.

I found generic instructions for my engine through a link on the Hobby City website 6 months ago. The link took me to the engine manufacturer's site.

CR
Charley is offline  
Reply With Quote
Old 09-25-2008, 01:38 AM
  #796
lotech
 
Join Date: Jun 2008
Location: red bluff, CA
Posts: 52
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers


Quote:
ORIGINAL: chutt

Hi!

I received my SV 26cc from HobbyCity last week. Is my first gas engine.
Beautiful engine, but I have some questions about his Walbro carb.
I take some pictures of his carb...
Point 1: what line I connect in this tube?
Point 2: in this tube I suppose that I connect the fuel line coming from tank. It´s ok?
Point 3: from where this tube comes?

Last questions... This carb don´t have choke. This bulb have the same finality? What´s the procedure do start this engine? How can I start this engine in a full cowled airplane?

Thank you!

Andre.

Andre, the #1 is to put pressure to the tank on weedeaters, plug it. #2 is for the fuel line from the tank!!! If you start this engine with a electric starter you will have no problems when cold

with no choke.. I made a choke plate for mine to help hand starts!! Hope this helps,,,,, Lotech
lotech is offline  
Reply With Quote
Old 09-25-2008, 08:35 AM
  #797
HeliTB
 
HeliTB's Avatar
 
Join Date: Sep 2006
Location: Fort Washington, MD
Posts: 1,261
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

Does anybody know what size Tru-Turn spinner and adapter kit to use for the SV 26cc? Or is there something else that works? I have the engine installed in a PeakModel Extra 330L 25%.
HeliTB is offline  
Reply With Quote
Old 09-25-2008, 09:06 AM
  #798
sam.s.man
 
Join Date: May 2008
Location: Shah Alam, MALAYSIA
Posts: 61
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

This is always the problem with Hobby City. It is NOT WYSIWYG, always misleading..!! I have a lot of orders from HC and in each order there MUST be something out of expectation.!!
sam.s.man is offline  
Reply With Quote
Old 09-25-2008, 09:28 AM
  #799
HeliTB
 
HeliTB's Avatar
 
Join Date: Sep 2006
Location: Fort Washington, MD
Posts: 1,261
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

chutt...I purchased and installed a Walbro 644 carb that has choke. I ran a choke cable(golden rod) to the outside of the cowl so that I could open and close the choke. I removed the bulb from the new carb and used the cover plate from the old 817 that was on it.
HeliTB is offline  
Reply With Quote
Old 09-25-2008, 02:37 PM
  #800
Charley
 
Join Date: Dec 2001
Location: Kerrville, TX
Posts: 2,030
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: New SV Gassers

Quote:
ORIGINAL: HeliTB

chutt...I purchased and installed a Walbro 644 carb that has choke. I ran a choke cable(golden rod) to the outside of the cowl so that I could open and close the choke. I removed the bulb from the new carb and used the cover plate from the old 817 that was on it.
Hoo Boy! Aren't we something? We buy these cheap engines and then spend $$ to get them right. ?? I guess we just like to mess around with the hobby
Charley is offline  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 09:46 AM.