mvvs 150
06-10-2005 | 11:05 PM
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From: neosho,
MO
mvvs 150
I just picked up a mvvs 150 from one of our club members son .I need a bit of info on them if possibile .as the son lives in texas and i am in missouri.
What is the right fuel for this engine? what glow plug .prop is 17x6 and 17x8 it has i think a bison pitts style muffler on it it has a couple extra holes on the bottom were the pipes exit..
I am thinking about putting it in either a extra 260 or mayby a 10 100 bipe.If someone can tell me what the needles should be set at for a good starting point .that info would be very helpfull.Thanks in advance for the help..
Oh yes i already read on here that mvvs dont make this engine any more .hopefully i wont need parts anytime soon but knowing were to get them would be nice to know
would mvvs make a pert if a guy needed one ""OH yes "at a price a guy could afford .thanks again
What is the right fuel for this engine? what glow plug .prop is 17x6 and 17x8 it has i think a bison pitts style muffler on it it has a couple extra holes on the bottom were the pipes exit..
I am thinking about putting it in either a extra 260 or mayby a 10 100 bipe.If someone can tell me what the needles should be set at for a good starting point .that info would be very helpfull.Thanks in advance for the help..
Oh yes i already read on here that mvvs dont make this engine any more .hopefully i wont need parts anytime soon but knowing were to get them would be nice to know
would mvvs make a pert if a guy needed one ""OH yes "at a price a guy could afford .thanks again
06-10-2005 | 11:37 PM
#2
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RE: mvvs 150
Twostik,
I guess from what you wrote that you have the glow version, with a normal MVVS carburettor.
Correct me if my assumption is wrong.
I also guess the #3215 carburettor is an older (over 3 years old) version, that still has the blunt ended idle needle.
This needle should be initially set so its body is 1.2 mm (about 0.005". 2 mm/0.008" for the new, tapered end needle) from the throttle arm nut.
For the Walbro carburettor, a good initial setting is both needles 1.75-2 turns open.
The rubber/Teflon parts of the Walbro will eventually deteriorate in methanol, so their replacement is required every 6 months, or so.
This engine is designed to run on no nitro, 85/15 methanol/Castor oil fuel.
You can replace 3-5% of the methanol with nitromethane, for better consistency.
I guess from what you wrote that you have the glow version, with a normal MVVS carburettor.
Correct me if my assumption is wrong.
I also guess the #3215 carburettor is an older (over 3 years old) version, that still has the blunt ended idle needle.
This needle should be initially set so its body is 1.2 mm (about 0.005". 2 mm/0.008" for the new, tapered end needle) from the throttle arm nut.
For the Walbro carburettor, a good initial setting is both needles 1.75-2 turns open.
The rubber/Teflon parts of the Walbro will eventually deteriorate in methanol, so their replacement is required every 6 months, or so.
This engine is designed to run on no nitro, 85/15 methanol/Castor oil fuel.
You can replace 3-5% of the methanol with nitromethane, for better consistency.
06-26-2005 | 10:47 PM
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From: neosho,
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RE: mvvs 150
Thanks for the info .This one has a walbro carb on it.It has been with morgan fuel 5% I dont know if that would hurt it he said that he always ran it on the rich side.
thanks again for the tips .it will probably be fall before i get time to build a plane for it.probably a christian eagle bipe.
thanks again for the tips .it will probably be fall before i get time to build a plane for it.probably a christian eagle bipe.
06-27-2005 | 12:01 AM
#4
Senior Member
RE: mvvs 150
Twostik,
Large glow engines tend to back-fire and throw the prop, if the low end is set too rich.
This engine is no exception.
If it loads up, the volume of fuel that goes into the chamber, as the throttle is opened, increases the effective compression and the resultant pre-ignition may cause the prop to be jarred loose.
So don't run it too rich...
Large glow engines tend to back-fire and throw the prop, if the low end is set too rich.
This engine is no exception.
If it loads up, the volume of fuel that goes into the chamber, as the throttle is opened, increases the effective compression and the resultant pre-ignition may cause the prop to be jarred loose.
So don't run it too rich...
