Re: fuel for norvel .061

PV Pilot Tue Feb 21, 2012 10:41 am

Ran about 3 quarts+ thru my new Big Mig 074 RC and it still has a good tdc pinch. By just the way it feels and dealing with tight TDC motors in the past,, it's probably going to take several gallons before it starts to loosen at all, if any. I don't really want it to loose that tight pinch, but eventually it is inevitable and unavoidable. With any new motor, with a tight TDC or not, they always get a preheat. 90% of the time it makes starting them so much easier and they will last longer. I have done this for years and will continue to do so. The quicker you can get them to operating temp during running, the longer they will last. Very important to after-run those tight new motors when they are still warm. As soon as the motor runs out of fuel during a break in run, rotate that piston to BDC.

mitchg95 Tue Feb 21, 2012 8:31 pm

im looking at it right now, turns out that its actually an ame engine, and it says 0.8 for displacement in stead of 0.61.
is this engine rare?

andrew Tue Feb 21, 2012 9:01 pm

No, it is a fairly common older model.

The 0.8 stands for .8cc displacement or .049 equivalent. You can't tell whether a NORVEL is a Big Mig or AME unless you count the intake ports in the cylinder -- both are outwardly alike. The AME has 3 larger oblong ports and the Big Mig has 5 smaller circular ports. If you're using the lettering on the side of the case as an indicator that it's an AME, what you're seeing is likely AMД, which are the first letters of Авиация Модель двигателя or Russian for aviation model engine. The early models had this embossed on the case, regardless of engine type. When the engine was "Americanized", the English term Aviation Model Engine was retained and shortened to AME to differentiate it from the later model Big Mig.

andrew

**RknRusty** Tue Feb 21, 2012 10:28 pm

Is the Mig part of the name related to the MiG Russian Aircraft corporation?

mitchg95 Tue Feb 21, 2012 11:10 pm

andrew wrote:No, it is a fairly common older model.

The 0.8 stands for .8cc displacement or .049 equivalent. You can't tell whether a NORVEL is a Big Mig or AME unless you count the intake ports in the cylinder -- both are outwardly alike. The AME has 3 larger oblong ports and the Big Mig has 5 smaller circular ports. If you're using the lettering on the side of the case as an indicator that it's an AME, what you're seeing is likely AMД, which are the first letters of Авиация Модель двигателя or Russian for aviation model engine. The early models had this embossed on the case, regardless of engine type. When the engine was "Americanized", the English term Aviation Model Engine was retained and shortened to AME to differentiate it from the later model Big Mig.

andrew

so its actually smaller than the .061? cool ill look at the porting, i had no idea that it was an .049

andrew Tue Feb 21, 2012 11:33 pm

Rusty --
I've done a bit of poking around in NORVEL history over the years and do not recall ever learning why the Big Mig name was selected. I don't think it has anything to do with the MiG factory (named for the founders Artem Mikoyan and Mikhail Gurevich)

mitchg95 Wed Feb 22, 2012 8:45 am

i looked at the porting last night, its the big mig version

PV Pilot Fri Feb 24, 2012 12:45 pm

Just recieved my Norvel Mitch.

fuel for norvel .061 - Page 2 Norvel

A bit rough, but it will live again. serial#6100027, which denotes to .061 I believe. Dont know what the #27 means. #27 made?. Missing the cylinder screws.

microflitedude Fri Feb 24, 2012 1:02 pm

Does it say "1.0" on the side?

PV Pilot Fri Feb 24, 2012 1:31 pm

microflitedude wrote:Does it say "1.0" on the side?

Cant tell, some black pen mark there, but it's smeared beyond recognition. It kinda looks like a 1.0

andrew Fri Feb 24, 2012 2:36 pm

Well, it's early on in the series, early enough that they were still using cubic centimeters for displacement, so the 61 in the serial probably means something else.

Likely, it will be either marked with a 0.8 or 1.0 cc (.049 or .061). There are several indicators that place this engine early in the evolution. The muffler stinger points straight back; the NV looks to be brass or brass colored; the carb is glued in and the intake screen retainer is turned and pressed on to the carb body. Just as a guess, the thrust plate probably slips over a tapered split collet rather than having a flat broached into it.

The cylinder screws are 2mm in diameter. The OEM screws used on all NORVEL versions are around 5mm in length. When in place, they do not extend through the crankcase flange. Anytime I pull any maintenance on one of my engines, I replace the cylinder screws with socket head screws that are 8mm in length. At this length, the screw protrudes below the flange so if it ever gets snapped off flush with the top of the crankcase, I can back it out from the bottom using needle nose pliers. If it doesn't protrude and gets broken, it can be a real pain to get out of the flange hole.

Since your engine is an early model, the plug may be one of the original plug designs, fairly cold and requiring more voltage than the later Freedom plugs. If that's the case, the newer Freedom plug will not fit the existing head clamp. If you have one of Bernie's or Matt's new plug inserts, try it for size. If it will work with the head clamp on your engine, it will work with NORVELs current production plug.

andrew

Surfer_kris Fri Feb 24, 2012 2:47 pm

Good call on the glow plug, it does look like the colder version (flat top on the electrode). The later warmer ones have a round ball at the end.
The last time I bought plugs from NV I got the old type though...

PV Pilot Fri Feb 24, 2012 6:36 pm

Excellent,,good info.

I have some cap head grade 10 M2x8's, 6's and 5's.

split collet drive on the nose, brass main needle, all the rest.

mitchg95 Fri Feb 24, 2012 8:32 pm

PV Pilot wrote:Just recieved my Norvel Mitch.

A bit rough, but it will live again. serial#6100027, which denotes to .061 I believe. Dont know what the #27 means. #27 made?. Missing the cylinder screws.

looks a bit ruff, but hey, any rough engine that is givin some tlc will run again

PV Pilot Sun Feb 26, 2012 7:12 am

Was parusing the New Norvel website for a few bits and pieces and came across this:
http://www.nvengines.com/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=126&category_id=3&option=com_virtuemart&Itemid=67

What the heck??,,lol.

mitchg95 Sun Feb 26, 2012 11:52 am

PV Pilot wrote:Was parusing the New Norvel website for a few bits and pieces and came across this:
http://www.nvengines.com/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=126&category_id=3&option=com_virtuemart&Itemid=67

What the heck??,,lol.

wow spears 2... looks great

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