RE: XYZ ENGINES  
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RE: XYZ ENGINES - 5/4/2008 3:04:54 AM   
jstanton



Posts: 1877
Joined: 8/30/2002
From: Millington, TN, USA
Status: offline 		Ron,

Very nice video on the first flight of your XYZ-50. I am just about done with the wing of the P-40 and will start the fuselage tomorrow. I still have to get my century jet landing gear for the plane. I hope to have the plane finish by the end of the month.

_____________________________

Jim Stanton
Millington, TN 38053

(in reply to XYZUSA)
       Post #: 76

RE: XYZ ENGINES - 5/4/2008 3:37:12 AM   
jstanton



Posts: 1877
Joined: 8/30/2002
From: Millington, TN, USA
Status: offline 		A 16x10 prop should work very well on this size of engine. I have a 26 gasser using a APC 17x8 prop and it spins it at 7500RPM and has more than enough power for my CG Stinson. Here is a small video.

http://www.rcuvideos.com/item/M5J3CR7YNC23J29R

_____________________________

Jim Stanton
Millington, TN 38053

(in reply to STEVESRCWORLD)
       Post #: 77

RE: XYZ ENGINES - 5/14/2008 12:07:06 PM   
jstanton



Posts: 1877
Joined: 8/30/2002
From: Millington, TN, USA
Status: offline 		I am getting close to being being done with my Skyshark P-40N. I will be posting more RPM #'s once I am finished with the build. I have some Bambula 20x10 & MA 20x10 props I plan to use on the XYZ-50. A freind of mine fly's his Skyshark P-40N with a Brison 3.2(52cc) with a Zinger 20x10 props. He is getting 7000RPM and the plane fly's great. I hope to get close to 7000 RPM with a Bambula 20x10. I was getting 7200RPM with a APC 20x8 prop so I think it will be close. I'll let you know how it goes,

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Jim Stanton
Millington, TN 38053

(in reply to jstanton)
       Post #: 78

RE: XYZ ENGINES - 5/15/2008 12:34:11 AM   
STEVESRCWORLD


 

Posts: 205
Joined: 9/27/2004
From: PAGELAND, SC, USA
Status: offline 		i just received mine and the engine looks very nice. the pickup on the motor is broken and i haven't heard back from them yet.

(in reply to jstanton)
       Post #: 79

RE: XYZ ENGINES - 5/23/2008 12:01:03 AM   
jstanton



Posts: 1877
Joined: 8/30/2002
From: Millington, TN, USA
Status: offline 		Well I finally got around to testing the XYX-50 again. I have a MAS 20x10 and a Bambula 20x10. I will never waste my money again on a MAS prop. That prop was so far out of balance I thought I was never going to balance it. Once I got the MAS 20x10 prop balanced I only got 6200RPM with the XYZ-50. I changed the prop out to the Bambula 20x10 prop that was balanced right out of the package. The XYZ-50 loved the Bambula prop and the engine jump to 6950RPM. Plenty of power for my Skyshark P-40.

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Jim Stanton
Millington, TN 38053

(in reply to STEVESRCWORLD)
       Post #: 80

RE: XYZ ENGINES - 5/23/2008 12:22:36 AM   
STEVESRCWORLD


 

Posts: 205
Joined: 9/27/2004
From: PAGELAND, SC, USA
Status: offline 		ron sent me a new pickup sensor to replace my broken in shipping one. i have the motor mounted up on the plane and hope to crank and fly this weekend. i will be running a xoar 17x6 prop for break-in. i'll keep everyone posted.

(in reply to jstanton)
       Post #: 81

RE: XYZ ENGINES - 5/23/2008 1:53:38 AM   
jstanton



Posts: 1877
Joined: 8/30/2002
From: Millington, TN, USA
Status: offline 		Steve,

I would call and talk to Ron about your choice of prop size. I was using a APC 20x8 prop and Ron told me that prop was to small to use. It would allow the engine to over rev during breakin and could have caused a problem. If you look at recomemded prop size's the 20x10 is the smallest size to start with. Just my 2 cents here.



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Jim Stanton
Millington, TN 38053

(in reply to STEVESRCWORLD)
       Post #: 82

RE: XYZ ENGINES - 5/23/2008 5:54:21 PM   
STEVESRCWORLD


 

Posts: 205
Joined: 9/27/2004
From: PAGELAND, SC, USA
Status: offline 		sorry i thought i posted it earlier but my engine is a 26cc.

(in reply to jstanton)
       Post #: 83

RE: XYZ ENGINES - 5/23/2008 8:22:57 PM   
jstanton



Posts: 1877
Joined: 8/30/2002
From: Millington, TN, USA
Status: offline 		Sorry about that I was thinking 50cc. 17x6 on a 26cc should be good

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Jim Stanton
Millington, TN 38053

(in reply to STEVESRCWORLD)
       Post #: 84

RE: XYZ ENGINES - 5/24/2008 8:21:52 PM   
rfmullig


 

Posts: 74
Joined: 12/5/2005
From: grand rapids, MI, USA
Status: online 		Well, I have about 10 flights on my big Cap 232 with the XYZ-50 and I am still VERY happy with the engine. I am now at 6800rpm stationary with TONS of vertical power. I am running 120 octane aviation fuel at 32-1 mix. The engine starts great, runs smooth and with the JFX 21x8 prop I have ample power. I promise that I will have video soon.

Rob-

(in reply to jstanton)
       Post #: 85

RE: XYZ ENGINES - 5/25/2008 4:32:44 AM   
jstanton



Posts: 1877
Joined: 8/30/2002
From: Millington, TN, USA
Status: offline 		Rob

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Jim Stanton
Millington, TN 38053

(in reply to rfmullig)
       Post #: 86

RE: XYZ ENGINES - 5/25/2008 4:41:05 AM   
jstanton



Posts: 1877
Joined: 8/30/2002
From: Millington, TN, USA
Status: offline 		Sorry don't know waht happened there!.. Rob I'll be looking for your video. I hope to have a video of the Skyshark P-40 when I do the maiden flight

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Jim Stanton
Millington, TN 38053

(in reply to jstanton)
       Post #: 87

RE: XYZ ENGINES - 5/25/2008 3:39:58 PM   
XYZUSA



Posts: 90
Joined: 11/14/2005
From: Jacksonville, FL, USA
Status: offline 		To All,
We have added afew pics to the website!
We also have some numbers coming Tuesday when we finish
static testing both engines. They will be posted here and on
the website.

Happy Weekend !
SERCE

_____________________________

Ron
Southeast R/C Engines
www.southeastrcengines.com
"The low cost leader in gas engines"

(in reply to jstanton)
       Post #: 88

RE: XYZ ENGINES - 5/29/2008 10:06:06 PM   
XYZUSA



Posts: 90
Joined: 11/14/2005
From: Jacksonville, FL, USA
Status: offline 		Here are the numbers we found from last weekend.
Both engines were new out of the box so we let both run
for about 20min at 2500rpm so that they had
at least some break-in. Also, attached are two pics
of the go cart we used to test.

XYZ-50cc:
Xoar 20x10 15.5lbs @ 6300rpm
TBM 22x8 - 16.5lbs @ 6000rpm
JXF 21x8 18.5lbs @ 6500rpm

XYZ-26cc:
APC 16x8 8.5lbs @ 7900rpm
Xoar 17x8 - 10lbs @ 7000rpm
JXF 18x8 10lbs @ 6700rpm

For my own interest, I am giving these engines to a couple friends at our club
to see what the numbers look like after they have some flight time on them.

We used a fish scale that was not short of rust and in need of oil.
I wish we had a better one because we will need to use that same scale
again when we do this after some flight time.



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


_____________________________

Ron
Southeast R/C Engines
www.southeastrcengines.com
"The low cost leader in gas engines"

(in reply to XYZUSA)
       Post #: 89

RE: XYZ ENGINES - 5/29/2008 10:14:03 PM