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-   -   mvvs 26 petrol and tuned pipe (https://www.rcuniverse.com/forum/mvvs-support-322/6284686-mvvs-26-petrol-tuned-pipe.html)

aeroboy1293 08-25-2007 08:38 AM

mvvs 26 petrol and tuned pipe
 
Hi there.

Can you give me a bit of info with regard to the throttling and mid range performance of the 26cc IFS petrol motor.
It's a toss up of either the MTW TD40 canister or the 3266 tuned pipe.

The motor will replace my problematic YS 140-sport and will be fitted to my X-TECH YAK - 54.
The model is 73" span and weighs almost 11lbs.

Would a 12oz tank be sufficient for a 10 to 12min flight, which is a mix of imac and a little 3d.

Prop wise either a Mejzlic 18 x 8 two blade or 16 x 11 three blade.
Oil wise, can I use 3W's own fully synthetic oil which is currently mixed at 50:1 for use in my 3W-55i powered WH Extra 300S.

Any info would be much appreciated in helping me to make a well informed purchase.

Regards

Aeroboy.

pe reivers 08-25-2007 04:13 PM

RE: mvvs 26 petrol and tuned pipe
 


ORIGINAL: aeroboy1293

Hi there.

Can you give me a bit of info with regard to the throttling and mid range performance of the 26cc IFS petrol motor.
It's a toss up of either the MTW TD40 canister or the 3266 tuned pipe.

The motor will replace my problematic YS 140-sport and will be fitted to my X-TECH YAK - 54.
The model is 73" span and weighs almost 11lbs.

Would a 12oz tank be sufficient for a 10 to 12min flight, which is a mix of imac and a little 3d.

Prop wise either a Mejzlic 18 x 8 two blade or 16 x 11 three blade.
Oil wise, can I use 3W's own fully synthetic oil which is currently mixed at 50:1 for use in my 3W-55i powered WH Extra 300S.

Any info would be much appreciated in helping me to make a well informed purchase.

Regards

Aeroboy.
*- The 3266 tuned pipe has best power and excellent throttle response, if used with the original header. If you need a longer header, go with the TD30 or TD40 muffler.
*- the engine uses 3/4 oz/minute, using an 18x8 prop. The 16x11 is not such a good choice.
*- oilwise, use what MVVS prescribes, and use that in all your engines, not the other way around.


aeroboy1293 08-25-2007 04:59 PM

RE: mvvs 26 petrol and tuned pipe
 
Hi Pe.

Is 3W's own oil not as good as made out then!!. I've only just purchased a litre and at £15 it's not cheap. I may have some difficulty in obtaining Mobil 1 2T locally it may well have to be mail order.

Is the 26 IFS going to be a good match for the YS 140 Motor that I have removed from the YAK due to problematic running and very expensive fuel.

Have you any good information regarding baffling the motor in a Yak cowling ?

Reg's

Aeroboy

pe reivers 08-28-2007 01:28 PM

RE: mvvs 26 petrol and tuned pipe
 

ORIGINAL: aeroboy1293

Hi Pe.

Is 3W's own oil not as good as made out then!!. I've only just purchased a litre and at £15 it's not cheap. I may have some difficulty in obtaining Mobil 1 2T locally it may well have to be mail order.

Is the 26 IFS going to be a good match for the YS 140 Motor that I have removed from the YAK due to problematic running and very expensive fuel.

Have you any good information regarding baffling the motor in a Yak cowling ?

Reg's

Aeroboy
Do not get me wrong. 3W oil, whatever it is, is quite popular amongst German pilots, but as long as I do not know what it is, I will not recommend it for MVVS engines, because they have ultimate demands on the oil used, due to the very high specific power output, and cantilever crank construction.

For a baffling example, look at the " Evolution 58GX2 ign. LED flashing" thread at http://www.rcuniverse.com/forum/m_62...tm.htm#6255021
I will post a complete report soon in my own forum www.prme.nl/forum (working on it, but time is not on my side)

John E 09-30-2007 04:06 PM

RE: mvvs 26 petrol and tuned pipe
 
Aeroboy,

I also can't comment on the 3W oil, but I have to say that having seen the insides of MVVS engines running exclusively on the recommended oil, and parts from engines that haven't, I have no doubt that MVVS have got it absolutely right!

The oil is readily available from MVVS - I just need to check the UK postal regs before buying it.

BTW, the running in oil supplied with the 45, 58, and 116 is the same Mobil oil.

DarZeelon 10-12-2007 08:42 AM

RE: mvvs 26 petrol and tuned pipe
 
This is a test post.
Done at Marc's request.

Moderators, please remove.

Thanks.

superbord 10-28-2007 11:56 AM

RE: mvvs 26 petrol and tuned pipe
 
test post

superbord 11-01-2007 01:02 AM

RE: mvvs 26 petrol and tuned pipe
 
one more test post

superbord 11-10-2007 02:47 AM

RE: mvvs 26 petrol and tuned pipe
 
test post

superbord 11-10-2007 01:54 PM

RE: mvvs 26 petrol and tuned pipe
 
test post

superbord 11-10-2007 02:01 PM

RE: mvvs 26 petrol and tuned pipe
 
eee

superbord 11-10-2007 02:01 PM

RE: mvvs 26 petrol and tuned pipe
 
test

pe reivers 11-11-2007 06:26 PM

RE: mvvs 26 petrol and tuned pipe
 
Your work was succesful! I finally get mail notices again.


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