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Old May 22, 2003, 03:00 AM
ed
Guest
n/a Posts
help with motor identity?

> ok lets give just the details!
>
> :MAC 10 ky on case
> :head and drive washer are gold anodized
> :has metric hardware the heads of the screws are slot type
> :no ring
> :three needle carb
> :side exhaust
> :is 60 sized (10cc)
> :side exhaust
> :stock muffler is missing
> :muffler is bolted too engine
>
> any ideas?
> think it is russian version of mds?
> is it good or bad?
> can i use tuned pipe if so what type?
> what prop is recomended (high or low rpm type engine)?


what do i have a very rare engine?

anyone have any idea if it is junk or will run reliably.

want to put it in a traner of some sort for my eight year old to learn but
the thing has to be reliable!
Old May 23, 2003, 03:00 AM
M Dennett
Guest
n/a Posts
Re: help with motor identity?

No it's not really rare. I have two in the box still. What you have there is
a pre-North American import MDS .60, I would guess 1980's vintage. "MAC" is
MDS, and MDS is Russian. They first started being imported in quantity
sometime in the early '90's and were changed somewhat to make them more
attractive to this market. Estes looked at them once when they were
considering getting into the R/C game, later the line went elsewhere for
import. An ex business partner of mine used to import them to Canada in
small numbers in the original packaging as an interest item. Maybe yours
came from there, who knows. They came in a fairly high density foam box,
with lots of waxy corrosion protection all over the engine, photocopied
instructions, a little bag of head shims and other bits.

The metallurgy and machining is pretty good. The exterior appearance is less
than we're often used to, the fasteners in particular look horrible and
cheap.

Those that I have run, run fine. Use 10% nitro maximum unless you drop in a
head shim or two (if you have them). Use typical .60 props - 11-7 or 8 for
faster sport aircraft, 12-6 for your trainer. Don't lug it too much.

Mike D.
MAAC 36930




ed <ededge2002@yahoo.ca> wrote in message
news:b6aa1ef0.0305211808.466ded73@posting.google.c om...
> > ok lets give just the details!
> >
> > :MAC 10 ky on case
> > :head and drive washer are gold anodized
> > :has metric hardware the heads of the screws are slot type
> > :no ring
> > :three needle carb
> > :side exhaust
> > :is 60 sized (10cc)
> > :side exhaust
> > :stock muffler is missing
> > :muffler is bolted too engine
> >
> > any ideas?
> > think it is russian version of mds?
> > is it good or bad?
> > can i use tuned pipe if so what type?
> > what prop is recomended (high or low rpm type engine)?

>
> what do i have a very rare engine?
>
> anyone have any idea if it is junk or will run reliably.
>
> want to put it in a traner of some sort for my eight year old to learn but
> the thing has to be reliable!



Old May 23, 2003, 03:00 AM
ed
Guest
n/a Posts
Re: help with motor identity?

"M Dennett" <dennett@cesaroni.net> wrote in message news:<zJ8za.6203$c41.677815@news20.bellglobal.com> ...
> >

> Those that I have run, run fine. Use 10% nitro maximum unless you drop in a
> head shim or two (if you have them). Use typical .60 props - 11-7 or 8 for
> faster sport aircraft, 12-6 for your trainer. Don't lug it too much.
>
> Mike D.
> MAAC 36930
>

thanks for the data been looking at this engine for a trainer

if i wanted big thrust think 13/4 will work?
Old May 25, 2003, 03:00 AM
M Dennett
Guest
n/a Posts
Re: help with motor identity?

Well.. depends on the wing loading of that trainer and it's comfortable
flight speed. Sure a 13-4 (or perhaps 13-5 may be a better idea) would have
pretty good static thrust, and might be a good choice esp. for something
along the lines of an old-timer, but your old standbys such as a 12-6 do
provide a lot of thrust and give a good speed range for aircraft such as
typical .60 trainers (and have slightly less rotational inertia/flywheel
effect thus slightly better response to throttle). And don't require as much
ground clearance. You might have to experiment, again I don't suggest you
lug the engine too much with a combination of large diameter and pitch.

Cheers,

Mike D.


ed <ededge2002@yahoo.ca> wrote in message
news:b6aa1ef0.0305221812.3078ddcd@posting.google.c om...
> "M Dennett" <dennett@cesaroni.net> wrote in message

news:<zJ8za.6203$c41.677815@news20.bellglobal.com> ...
> > >

> > Those that I have run, run fine. Use 10% nitro maximum unless you drop

in a
> > head shim or two (if you have them). Use typical .60 props - 11-7 or 8

for
> > faster sport aircraft, 12-6 for your trainer. Don't lug it too much.
> >
> > Mike D.
> > MAAC 36930
> >

> thanks for the data been looking at this engine for a trainer
>
> if i wanted big thrust think 13/4 will work?



 


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