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MVVS 26CC IFS - 4/18/2008 7:40:50 PM   
mc1982


 

Posts: 66
Joined: 12/14/2007
From: limassol, CYPRUS
Status: online 		Hey guys,

What is the best prop to use on the mvvs 26cc with pitts and with tuned pipe silencer? I want to mount the pipe if the plane allows it but i dont know what prop to use can anyone with this engine help me out?
       Post #: 1

RE: MVVS 26CC IFS - 4/18/2008 7:58:24 PM   
pe reivers



Posts: 2647
Joined: 1/23/2002
From: Arcen, , NETHERLANDS
Status: offline 		with a pitts, go for 16x10 to 18x8, depending on what you want to do and your plane weight
with the tuned pipe, the range will be much the same, but you will see a substantial rpm increase.
When you shorten the header and remove the end section of the tuned pipe, a 16x8 or 16x10 will scream.

_____________________________

Pe, Dealer for MVVS, MTW and Mejzlik; www.mvvs.nl
There is sanctuary in analisys.

(in reply to mc1982)
       Post #: 2

RE: MVVS 26CC IFS - 4/18/2008 11:07:57 PM   
mc1982


 

Posts: 66
Joined: 12/14/2007
From: limassol, CYPRUS
Status: online 		Sounds good =) my plane will be 5.5kg max. How can i remove the end section of the pipe?

(in reply to pe reivers)
       Post #: 3

RE: MVVS 26CC IFS - 4/19/2008 5:15:49 PM   
pe reivers



Posts: 2647
Joined: 1/23/2002
From: Arcen, , NETHERLANDS
Status: offline 		Check out Mark Fues at
http://tech.flygsw.org/all_about_evolution_26_gt.htm

_____________________________

Pe, Dealer for MVVS, MTW and Mejzlik; www.mvvs.nl
There is sanctuary in analisys.

(in reply to mc1982)
       Post #: 4

RE: MVVS 26CC IFS - 4/20/2008 7:27:37 PM   
mc1982


 

Posts: 66
Joined: 12/14/2007
From: limassol, CYPRUS
Status: online 		I have the engine and pipe now, i dont intend to cut it unless i can find someone that knows what they are doing because i dont have any good way of cutting the pipe like the picture. What prop should i go for with just the pipe?

(in reply to pe reivers)
       Post #: 5

RE: MVVS 26CC IFS - 4/21/2008 11:56:58 PM   
pe reivers



Posts: 2647
Joined: 1/23/2002
From: Arcen, , NETHERLANDS
Status: offline 		18x6

_____________________________

Pe, Dealer for MVVS, MTW and Mejzlik; www.mvvs.nl
There is sanctuary in analisys.

(in reply to mc1982)
       Post #: 6

RE: MVVS 26CC IFS - 4/27/2008 8:03:04 PM   
mc1982


 

Posts: 66
Joined: 12/14/2007
From: limassol, CYPRUS
Status: online 		Thanks!

(in reply to pe reivers)
       Post #: 7

RE: MVVS 26CC IFS - 4/27/2008 8:03:41 PM   
HW50


 

Posts: 46
Joined: 9/10/2003
From: Bergen, NORWAY
Status: offline 		I have a 18x6 MenZ S prop on my 26 IFS which is fitted with the MVVS tuned pipe.

I got 8640 rpm with the engine a little on the rich side. Is that good?

Helge.

(in reply to pe reivers)
       Post #: 8

RE: MVVS 26CC IFS - 4/27/2008 10:17:47 PM   
pe reivers



Posts: 2647
Joined: 1/23/2002
From: Arcen, , NETHERLANDS
Status: offline 		you seem to be running too rich. With settings as they should be, rpm will be about 8800 - 9000 (conservative estimate)
I got 8200 rpm on APC 18x10, which is a slender blade design.

_____________________________

Pe, Dealer for MVVS, MTW and Mejzlik; www.mvvs.nl
There is sanctuary in analisys.

(in reply to HW50)
       Post #: 9

RE: MVVS 26CC IFS - 6/10/2008 3:47:47 PM   
asmund


 

Posts: 1877
Joined: 11/20/2005
From: Floroe, NORWAY
Status: offline
quote:

ORIGINAL: HW50
I have a 18x6 MenZ S prop on my 26 IFS which is fitted with the MVVS tuned pipe.
I got 8640 rpm with the engine a little on the rich side. Is that good?
Helge.



I get 8900 rpm on the very same prop, haven`t tried to lean it more, but I think there`s even more in it

(in reply to HW50)
       Post #: 10

RE: MVVS 26CC IFS - 6/10/2008 5:59:33 PM   
pe reivers



Posts: 2647
Joined: 1/23/2002
From: Arcen, , NETHERLANDS
Status: offline 		8900 is fine, and allows the engine to unfold.
When using larger props, you are better off using an extra shim under the head. The engine then runs even "smoother".

_____________________________

Pe, Dealer for MVVS, MTW and Mejzlik; www.mvvs.nl
There is sanctuary in analisys.

(in reply to asmund)
       Post #: 11

RE: MVVS 26CC IFS - 6/19/2008 9:52:04 PM   
Adrenalin2m


 

Posts: 66
Joined: 4/2/2007
From: RR#4 Aylmer, ON, CANADA
Status: offline 		Hi guys, what are all the differences between the new 26 IFS SP and the old 26 IFS other than the head and carb stack?

(in reply to pe reivers)
       Post #: 12

RE: MVVS 26CC IFS - 6/20/2008 9:14:56 AM   
pe reivers



Posts: 2647
Joined: 1/23/2002
From: Arcen, , NETHERLANDS
Status: offline 		heavier crank/conrod
beefed up lower rod bearing
modified crankcase

Only is SP: narrower, deeper hemi head to allow side plug (resulted in wider squish zone)

_____________________________

Pe, Dealer for MVVS, MTW and Mejzlik; www.mvvs.nl
There is sanctuary in analisys.

(in reply to Adrenalin2m)
       Post #: 13

RE: MVVS 26CC IFS - 6/20/2008 11:59:03 AM   
Adrenalin2m


 

Posts: 66
Joined: 4/2/2007
From: RR#4 Aylmer, ON, CANADA
Status: offline
quote:

ORIGINAL: pe reivers

heavier crank/conrod
beefed up lower rod bearing
modified crankcase

Only is SP: narrower, deeper hemi head to allow side plug (resulted in wider squish zone)



Thankyou sir, I will wait until they become available at our Canadian dealer, Dave Moen in BC and buy the SP model instead of the old model that he has in stock.

(in reply to pe reivers)
       Post #: 14

RE: MVVS 26CC IFS - 9/6/2008 10:32:51 PM   
ottertok


 

Posts: 12
Joined: 12/5/2004
From: Aylmer, ON, CANADA
Status: offline
quote:

ORIGINAL: pe reivers

Check out Mark Fues at
http://tech.flygsw.org/all_about_evolution_26_gt.htm


Hi, the link you have provided for the pipe mod doesn't seem to work. I have the new 26 IFS SP and would like to mod my tuned pipe. Could you help with the picture please.

Thanks
Ed.

(in reply to pe reivers)
       Post #: 15

RE: MVVS 26CC IFS - 9/7/2008 1:41:21 PM   
pe reivers



Posts: 2647
Joined: 1/23/2002
From: Arcen, , NETHERLANDS
Status: offline 		Mark's page seems to be down.
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