MVVS engines?
Ted Jankowski
good or bad...
Thanks,
Ted
Micheal H. Gordon
are other members in my club who have had a lot of problems with theirs.
Go figure. Maybe I'm just lucky.
--
Mike Gordon AMA 320990
Remember; RC Pylon Racing, the Ultimate Thrill,
when sex and drugs just ain't enough
mpj220
It started easily, seemed to break-in quickly. It idles rock solid
after about 30 mins of break-in. Flip starts instantly. I flew it
yesterday and can't believe the amount of power it delivers. It is
mounted on a 40 size bipe with skis.
I bought it thru Morris Hobbies online. I will definitly buy another.
Enjoy,
Mark
RCKRZY1
<mikego...@attbi.com> writes:
>
>I like my MVVS. I 40 have had no problems with it at all. However there
>are other members in my club who have had a lot of problems with theirs.
>Go figure. Maybe I'm just lucky.
>
I got the same about 6-7 years ago, it had a liner/piston destroyed in breaking
in, looks like a piece casting came loose, I would inspect before running for
any shavings etc in crankcase, IT WAS repaired free under warranty, and
the good part, it has throttle response like no other engine I've owned, and
power is great. Would I buy another, YES.
Adam Tucker
AMA 520901
Hurst Tx
Remove ".NET" to Reply by Email
typo
news:n5Z18.4888$X4.4...@newsread2.prod.itd.earthlink.net:
I have seen a few of them run fantastic. Easy starting, instant throttle
responce, tic over idle, great power, lightweight. I bought a 45 and had hi
expectations of it from what i read online and the few I seen run so well.
Unfortunatly in the end the thing would not put out good power at all.
Eventually sold the engine and it ended up on a trainer where it still is.
Would I buy another, maybe. But I'd want to be able to return it if the
performance claims were not achived. Seems like their quality control could
use some help.
BradC
lightweight for a gas engine, and seems roughly equivalent to a 1.20 glow
for power. It has a rock solid idle, good throttle response and the
exterior machine work is excellent. Also, it is configured much the same as
a 2-stroke glow engine: the carburetor sits in front of the cylinder, thus
creating a narrow profile that will fit in about the same space as, say, a
Moki 1.80.
BradC
"Ted Jankowski" <tjjing...@earthlink.net> wrote in message
news:n5Z18.4888$X4.4...@newsread2.prod.itd.earthlink.net...
MajSpit
more power than I need. If you do the MVVS route definitely go with the
Walbro Carb and not the stock carb; I think the probs people have had with
engine performance is related to the sub-par stock carb. My 1.50 is on a
25% Edge and I have to fly it around with the throttle way back and the sub
13# plane will stand still on its tail at 1/2 throttle no probs. Idle is
solid and the engine starts with a simple flip; no starter required. Prime,
flip a few more times, glow on, flip and let her rip.
Highly recommended from my experience.
r/MajSpit
"Ted Jankowski" <tjjing...@earthlink.net> wrote in message
news:n5Z18.4888$X4.4...@newsread2.prod.itd.earthlink.net...
ed
can seem loud (probibly is).
sometimes burns out glow plug (as soon as it runs out of fuel).
burns lots of fuel (and holes in the sky).
others at the club complain (i dont think i can hear them over my heart).
take it easy on break in (mine required several flights until full
potential was realized).
if you can get over these little (in my opinion) problems (as i have)
this will probibly just be your first mvvs (I intend to buy another)
tho only other problem is all the others at the club wondering what is
wrong with there engine when you scream past there plane!
Charles & Peggy Robinson
I know Robert Kosar who runs MVVS. If you had a sick NEW MVVS .45,
he'd have replaced it. Did you ask? What muffler ot pipe did you
use? You're saying you sold it and it's on a trainer? I have a tuff
time believing that. A 17K-rpm hand-fitted screamer on a trainer and
running sick? I just have a tuff time believing that.
CR
Mathew Kirsch
> Gathering opinions on these engines if any one knows...please pass along,
> good or bad...
I bought an MVVS .25 second-hand on Ebay. Still don't know if I bought
a turd or a gem. The engine has gobs of compression, came with the
mini tuned silencer, and is smaller in outside dimensions, not to
mention lighter, than my other Ebay purchase, a Norvel .15BB AME. Too
bad the MVVS isn't legal in the Class A combat arena :)
Joe L.
Morris Su-do-Khoi. The engine is a stump puller, but definitely a little
loud. Once primed, the engine will start on the back flip by hand every
time. No starter needed there. It took some time to break in and hold
the high end setting, but is very reliable now.
I'd buy another,
Joe L.
> admin@loopback $LOGIN@localhost $LOGNAME@localhost
$USER@localhost
> $USER@$HOST -h1024@localhost ro...@mailloop.com
MajSpit
power-house of an engine only uses 5% nitro and it is MORE than enough.
MVVS will tell you many times not to use higher content fuel because it will
burn plugs fast. I use ROSSI plugs w/ 5% and although this engine is only
on it's 3rd gallon I still have the original plug in it. Just like any
engine, break it in RICH. Also, my 25% Edge has a 16 ounce tank in it.
After putting it through the ringers of 15 minutes of flight time, I
honestly don't have to refuel it; I still have just over a 1/2 of a tank in
it. Power plus fuel efficiency.. almost needs a paradigm shift!
Bottom line: Powerful, dependable, fuel efficient and not louder than
anything else at the field flying a big(ger) 2 stroker.
v/r, MajSpit
ps- I don't get paid or compensated for putting MVVS on a pedestal. I was
quite hesitant to buy this engine. I like solid engines; I have OS, YS and
a DA-100. I didn't want the MVVS because I didn't know much about it.
Morris Hobbies talked me into it, and told it like it was: A Great Engine.
The End.
"ed" <ededg...@yahoo.ca> wrote in message
news:b6aa1ef0.02011...@posting.google.com...
Jan Van de Moortel
The 1.20 twin is a totally different story: I never managed to have the
engine running consistently. Lots of power though.
Andy Steere
What a brute! VERY LOUD! Turns a 7.2x8.6 APC at 20K on the ground
and really unloads in the air. Powers my diamond dust well past
150MPH.
It's been through heck too. It crashed nose first, full throttle, at
more than 150MPH. Pictures of it are on my R/C webpage listed below.
Go to the 1st diamond dust page to see where it has been... then look
at the 2nd dust page for its resurrection.
I expected to have to at least replace the bearings after the crash
(which buried the engine up to its glow plug in the dirt)... but they
are nearly good as new (and no leaks ever).
Needless to say that I'm impressed.
Andy Steere
http://astro.umsystem.edu/andy/rc/
"Ted Jankowski" <tjjing...@earthlink.net> wrote in message news:<n5Z18.4888$X4.4...@newsread2.prod.itd.earthlink.net>...
ed
I (now) love mvvs and am proud of it!!!!
bubba
period, and a little picky until broken-in. After about 1 gallon of
fuel, it's a screamer. Super power, excellent idle, and phenomenal
throttle response. Needles fairly broadly. Very easy starting. One
of the strongest engines I have. I'm very satisfied, and have ordered
another.
On Fri, 18 Jan 2002 17:39:31 GMT, "Ted Jankowski"
<tjjing...@earthlink.net> wrote:
RCKRZY1
(Andy Steere) writes:
>
>My only MVVS experience is with their 40 GRRT pylon racing engine.
>What a brute! VERY LOUD! Turns a 7.2x8.6 APC at 20K on the ground
>and really unloads in the air. Powers my diamond dust well past
>150MPH.
>
Why that combo? I like the apc 8X10 @ 15k, the speed, who knows, too fast
for most.
typo
bought the engine.(selling them off cheap) I called Robert and told him all
about the trouble and I had already had the engine set up to proper
specifications, %5 fuel, incl. mvvs plug, 12.5x3.75 (or something like
that) APC, mvvs tuned muffler.
I did not ask for a replacement nor did he offer one.
Last I heard it was on a trainer. At least its reliable. Believe whatever.
If I buy one again I will get it from Robert if he assures me it will run
like its supposd to. Just telling my story as Ted was looking for opinions.
enuf said
Charles & Peggy Robinson <ccro...@ktc.com> wrote in
news:3C48C25A...@ktc.com:
MajSpit
bad you had a bad one. They are great engines.
r/ MajSpit
"typo" <fah...@hotmail.com> wrote in message
news:Xns919B7B97...@24.2.10.15...
Andy Steere
That prop is based upon the normal operating RPM range recommended to
me by Morris Hobbies. The GRRT is designed (ported and piped) to
produce its best power above 20,000 RPM. I am using the Q-500 R/C
carb (which has a bigger opening than the carb on my 61FX!).
But hey, if your Dust is "fast enough"... then by all means enjoy it!
You might try an 8x9. Should get on the pipe better (assuming you
are using the MVVS tuned-pipe made for that engine), giving more RPM's
(~19K). My calculator says that should translate into both a 20MPH
increase in speed, plus significantly more thrust (easier launching).
Mine is maxed out for speed, nearing the edge of having just barely
enough thrust for a solid takeoff. Even so, it has "unlimited
vertical" (defined as "straight up like a rocket for as far as the eye
can see").
Andy Steere
http://astro.umsystem.edu/andy/rc/
rck...@aol.com.net (RCKRZY1) wrote in message news:<20020119114542...@mb-ms.aol.com>...
Brian D. Felice
I've had mixed results with the smaller MVVS glow engines but have a very
different attitude toward the larger, gasoline engines. I just started (and
test-flew) an MVVS 1.60 gasoline engine (26 cc) and am extremely pleased with
the engine. Just a tad heavier than a typical 1.20 (4) cycle glow engine, but it
will outrun them. It also behaves very well. Bear in mind that this engine now
has about 10 minutes total time on it so I expect it will be even better with
more running time (compression is still very low indicating that the ring isn't
even close to seated yet). Power is excellent (18-6 @8,200 RPM), vibration is
very low, quality of fit and finish is very high, the ignition is extremely
small and works quite well, and of course it comes with a Walbro carb.. Add to
all of this the price, which is less than a YS .91 costs and I think they may
have a real winner here. As it's so new I can't really tell yet but just maybe
this engine will join a very few others on my list of favorites- the .25 and .40
OS FP, any YS four cycle engine, and the Moki 1.8.
Brian
http://members.home.net/bdfelice/
"You can always tell an engineer.....
"But you can't tell him much."
RCKRZY1
(Andy Steere) writes:
>
>Mine is maxed out for speed, nearing the edge of having just barely
>enough thrust for a solid takeoff. Even so, it has "unlimited
>vertical" (defined as "straight up like a rocket for as far as the eye
>can see").
>
>Andy Steere
>http://astro.umsystem.edu/andy/rc/
>
I love coming out of split S dive and level it at the end of runway then
pull/yank it
straight up midway down the runway, too cool.
Pe Reivers
1.60. All are very easy starting and dependable, powerful performers.
Because we sell these engines, I am biased of course :-)
The fifth engine, a long stroke .60, is to power my scale Liberty Sport bipe
this summer.
--
Pé, from Arcen, south-east Netherlands
http://www.reivers.myweb.nl/mvvs.htm
to reply: name=pe domain= reivers.myweb.nl
"Ted Jankowski" <tjjing...@earthlink.net> schreef in bericht
news:n5Z18.4888$X4.4...@newsread2.prod.itd.earthlink.net...
Pe Reivers
an extra shim added under the head when sold in America, where it is common
to use 10% or more nitro.
This high nitro content in the fuel is not needed in these engines, and if
not shimmed, may lead to extreme plug burn-out, and even bearing or
crank-shaft failure, because the combustion pressures are allowed to
sky-rocket.
IMHO, MVVS or Morris should shim ALL glow engines, before they sell them in
the US, and if they love the engines they sell, they probably do.
--
Pé, from Arcen, south-east Netherlands
http://www.reivers.myweb.nl/mvvs.htm
to reply: name=pe domain= reivers.myweb.nl
"ed" <ededg...@yahoo.ca> schreef in bericht
news:b6aa1ef0.02011...@posting.google.com...
typo
did give the 45 a good chance to break in and tried different props/fuel
ect. It looks to me like a "bad mvvs" is far and few between....Have any of
you found metal shavings inside the engines? I've seen a few posts about
that ahppening with nib mvvs engines.
One of the best features I like about these engines is theyre lightweight.
An important thing when choosing an engine for a fun fly type plane.
Anyone recommend the apc 12.25x3.75 prop for the 49?
L8R
Jenny and Paul Landels
>I (now) love mvvs and am proud of it!!!!
very few problems
nice range of silencers and pipes to suit all tastes
Paul
Wishing you a Happy and Peaceful New Year
Just Engines; (http://www.justengines.unseen.org)
for ALL your engine and engine accessory needs;