Ooh, look what papa got for early Christmas..
 

Hee hee, finally I have one, just bought it. I am setting up a tent by the mailbox tomorrow morning. What will I do until it arrives?[sm=bananahead.gif]

MJD

RE: Ooh, look what papa got for early Christmas..
 

.....have a few brewsky's....:)

RE: Ooh, look what papa got for early Christmas..
 

What the heck is it? Picture is too darned small!

RE: Ooh, look what papa got for early Christmas..
 

....it looks like a rear pipe 65 Rossi....;)....(or something similar)

RE: Ooh, look what papa got for early Christmas..
 

Is a Rossi or OPS ??? If is a Rossi where do you found it ???

I'm looking for one of that beast , but is really hard to get it now [:'(] .

Somebody knows what happen with SG MODEL ENGINES ??? they have out of stock the most of the engines ( airplane engines ) .

RE: Ooh, look what papa got for early Christmas..
 

i think a .65 OPS rear exhaust sale just ended on the large auction site. it could be that.

david

RE: Ooh, look what papa got for early Christmas..
 

Ta da! OPS .65 Speed SLA RIRE.

I had to have it, you understand.

MJD

EDIT: oh dear, I just got another one. If my wife finds out I am a dead man. But you see honey (whack!) I have this really neat twin (pow!) airplane kit downstairs, it's a (ow!) prototype Duellist 2/60 and (bam!).. and.. gasp.. it needs engines..need medical help..what have I done..whaddya mean mortgage payment? Help..

RE: Ooh, look what papa got for early Christmas..
 

Well, there is currently the famous goldhead OPS .60 Super SPP VAE on the big auction site for sale – NIB!

That is the most powerful .60 aero engine ever built commercially available. Unlike the .65 sized version the OPS .60 goldhead is FAI compliant.

http://image2-1.rcuniverse.com/e1/fo...22/Ze85061.jpg
http://image2-1.rcuniverse.com/e1/fo...22/Xr45611.jpg
http://image2-9.rcuniverse.com/e1/fo...22/Ep85319.jpg

In Germany speed pilots using this .60 VAE engine during the EURO Speed Cup potentially reach the first place within the 10 cc “royal class“ (F3S-C), for instance see
[link=http://www.rcuniverse.com/forum/m_3740991/anchors_5972949/mpage_3/key_Goukoune/anchor/tm.htm#5972949]250 mph speed! - German SPEEDCUP[/link]


However the past two years show a clear trend:
The OPS .60 VAE and its main rivals (PICCO .60 RIRE, ROSSI 61 RIRE, NOVAROSSI .61 FIRE, ) are being highly modified to hopefully burst that "magical" 250 mph "barrier" this year ( [link=http://www.f3s-speedcup.de/termine.php]27.+28. of Sept.[/link] )

These engine modifications include:

[ul][*] optimised timings for intake and exhaust[*] optimised crank and conrod/piston balance[*] optimised port shaping and mixture flow[*] reduced internal dead volume[*] different venturi speed carb[*] custom made multiple cone tuned pipe[*] custom made billet front ball bearing housing with differently sized ceramic bearings[*] either custom made rear intake disk valve unit ensuring less friction than stock[*] or modified OPS rear intake drum valve (latest version)[*] custom made cylinder head button with altered combustion chamber volume and geometry (squish band, double bubble etc)[*] usage of #6 to #8 coned glow plugs (Novarossi “Turbo“ plugs), so CNC cut + differently threaded head button blanks are needed. “Turbo Plugs“ work better (smaller cone end) and last longer than Nelson HD ore GloBee plugs.[*] custom made cylinder cooling head providing more efficient cooling and mounted by 8 cylinder head screws[*] ...
[/ul]



More OPS related topics:

http://www.rcuniverse.com/forum/m_52...key_OPS/tm.htm

http://www.rcuniverse.com/forum/m_48...tm.htm#4883651



So such an OPS 60 VAE engine really needs to be combined with an aerodynamically highly refined airframe and the correct sized carbon fibre propeller to make use of its potential.

Last not least more OPS 60 VAE info:

RE: Ooh, look what papa got for early Christmas..
 

i have a rear exaust rossi 65 that is for sale

RE: Ooh, look what papa got for early Christmas..
 

You deserve to have your spending put on hold...at least till you get that pulse jet flying!:)

RE: Ooh, look what papa got for early Christmas..
 

I know, I know, I know... [:o] None of you will ever, ever know my wife's name or e-mail address. Otherwise I would be quickly blackmailed out of what few model related treasures I may or may not have.

Winter is fast approaching around here, and that's the time when I have great ambitions of building everything before spring. Note I was not discussing reality here.

But hey.. gimme a break.. I am just finishing my Blink this morning, all that is left are the elevon pushrods, then programming and... gulp... test flying! Sometimes I get things built. Especially when there is only 50 grams of wood and about 15 parts involved.

MJD

p.s. I want that .60 too.. help me!

RE: Ooh, look what papa got for early Christmas..
 

Don't fill the tank completely full on your Blink;)
It does fly well though.

RE: Ooh, look what papa got for early Christmas..
 

Here you can see the OPS disk valve versus drum valve intake unit. The latter usually is used with the actual OPS .67 and .80 marine engines.

There are also many other parts interchangeable between the .60/.65/.67 and .80 OPS aero and the marine versions such like
[ul][*] conrod (non needle bearing)[*] front housing + bearings[*] crank (only .65 to .80)[*] carb (a 1.0 mm thick metal sleeve is needed in combination with the drum unit to match the 16 mm dia collet)[*] cylinder cooling head[*] piston pin (only .60 to .67)[*] integral type speed spinner
[/ul]
The second pic shows different OPS .65/67 head button chamber designs:

RE: Ooh, look what papa got for early Christmas..
 

Wow, this is some pretty trick stuff! :D[sm=thumbup.gif]

RE: Ooh, look what papa got for early Christmas..
 

Ah, but mine has a throttle, so I can chicken out, er, whoops, I mean stop the engine in an emergency. I'll snap a couple of "last known photos" here in a few minutes - esp. since my 16yr old is home now and can do it 12 times faster than me with his own camera.

I'm looking forward to the first "flight". I'll get my son to video it, though I hope he doesn't leap behind the car for cover as soon as I launch.

Oh hey, Blink fliers - I'm thinking left hand underhand toss, using the vertical fin. Mine is on there pretty solid so I have bo worries about that. Does that sound like the most sensible launch technique for this thing?
s
~~MJD~ (that means I'm trembling)


(not really..[8D])
s

RE: Ooh, look what papa got for early Christmas..
 

I noticed SG's selection was getting slim too.

If you realy want an OPS you can get an 67 or 80 right now but you will need to swap around the back plate and crank housing, purchase the prop drive adaptor, non marine head and exhaust adaptor. All for about $ 400 US. You can even get the tuned pipe there too.
http://www.aeromarinerc.com/opsengines.htm

Your biggest problem is getting a selection of carbon props IN YOUR HANDS! ZZ Prop makes a limited selection twice a year, only for what he has orders for. OR you can learn to make them yourself, use an APC prop as a mold plug or something (copy). Or steal some from the Germans :D

RE: Ooh, look what papa got for early Christmas..
 

I love OPS engines, but I'd more likely drop the coin on a Jett 90LX for the product support.

RE: Ooh, look what papa got for early Christmas..
 

That and it's easy to find a prop fot the Jett's speed range. But look a the OPS 67's HP 4.35 jeeeessssssss! Jett 90LX is 3 HP at best.

RE: Ooh, look what papa got for early Christmas..
 

Hey guess what freakingfast , today I received an answer from SG MODELS with good news to me , they say will have on stock Rossi .53 , .60 and .65 at middle of Octuber and the .53s will come with the large Rossi 10mm venturi carburator for max power .

I'll be waiting for the new stock :D .

RE: Ooh, look what papa got for early Christmas..
 

It is also one of the most handsome engines there is, in my personal opinion. I tell my buddies who've never seen an OPS that it is the Ferrari of RC engines, which they are willing to believe when they see it run. Or insert brand of your particular choice, but you get the point I'm sure.

MJD

RE: Ooh, look what papa got for early Christmas..
 

Its Italian, it can be a Ferrari :)

RE: Ooh, look what papa got for early Christmas..
 

Or a Fiat. :)

RE: Ooh, look what papa got for early Christmas..
 

Lamborghini would be my other choice, but I think Ferrari is most suitable.

RE: Ooh, look what papa got for early Christmas..
 

Yep, OPS marine engines are offered by Niagaramarinehobbies or Aeromarinerc for instance:

http://www.niagaramarinehobbies.com/OPS.67%20.80_1.htm
http://www.niagaramarinehobbies.com/OPS.45_1.htm
http://www.aeromarinerc.com/opsengines.htm

http://www.niagaramarinehobbies.com/...7-.80-fig2.JPG
http://www.niagaramarinehobbies.com/...7-.80-fig5.JPG


Indeed it is easy to convert the OPS .45, .67 and .80 marine engines to aero speed monsters:
[ul][*] Just swap the front and the rear end. Because the engine housings are designed symmetrically no problems will occur.
[*] The angled marine exhaust header can also be used for aero application, but it should be extended using the correct diameter aluminium tube featuring same outer diameter as the tuned pipe inlet. Best of course is to gas-weld (true material fusion) the tube extension onto the marine header. You may also bend the tube slightly to achieve a “Fuse-Top“ style header. The 4 water fittings do belong to a separate water cooled exhaust plate that won’t be used for an aero conversion. Or simply buy a MACS header instead: http://www.macspro.com/headers_rear.asp
[*] The golden anodised aero cooling head (#6240) would be the optimal solution but the red anodised marine head having cooling fins as well does the job nicely too – just unscrew both brass water fittings...
[/ul]



So the only parts that have to be purchased additionally are:
[ul][*] the propeller driver/washer/adaptor/nut assy (#6250 for .60 to 80 and #3640 for .40 to .45)
[*] or the integral type speed spinner (#6300 for .60 to 80 and #2300 for .40 to .45)
[*] the aero cylinder cooling head #4021 for .45.
[*] the venturi speed carb assembly #6290 for .60 to .80 and #4290 for .40 to .45.
[/ul]


For the OPS .45 following MACS tuned pipes are recommended:
[ul][*] # 1150 unmuffled[*] # 1250 muffled
[/ul]

For the OPS .60, .65 and .67 following MACS tuned pipes are recommended:
[ul][*] # 1160 unmuffled[*] # 1260 muffled
[/ul]

For the OPS .80 following MACS tuned pipes are recommended:
[ul][*] # 1190 unmuffled[*] # 1290 muffled
[/ul]


Please keep in mind:

- These converted OPS aero engines are much lighter than their marine counterparts due to missing flywheel and water-cooling equipment.

- Please maintain a fuel oil content of a minimum of 20%, even if using the needle bearing conrod versions. The nitro percentage depends on the type of head button used (“standard“ up to 15% and “nitro“ up to 40%).

- All of those converted OPS monsters do require continuous strand carbon fiber props for safety reasons!

- Please always use the electric starter. Never use a chicken stick in combination with carbon fiber props being too brittle!

- The actual OPS .45 (drum valve) is considerably stronger than the OS .46 VX-DF engine and supplies much more torque than the actual ultra-high timed FAI MB .40 pylon engines - so the OPS .45 SPEED VAE does turn oversquared props such like 6.5x10“ with authority...

- The actual OPS .67 redhead (parts are fully interchangeable with the 5-ports OPS .65) is even stronger than the FAI compliant OPS .60 VAE goldhead. However the actual .67 piston/sleeve assy is characterised by refined porting (3 + 2 + 2 port layout = 7 ports, see below pictures) and by slightly higher timing than the OPS .65. For that any OPS .65 owner should also purchase the OPS .67 marine engine (actual drum rotor version preferably) as a spare (parts) engine.

- The actual OPS .67 (drum valve, stock, non-modified internally, venturi carb) as a converted aero speed engine will unload to about 25.000 rpm with the correct sized prop and the right airframe aerodynamics. A highly modified OPS .67 version will gain appr. another 2000 rpm. So it is not really worth the effort to improve peak output by numerous internal mods.

[sm=wink_smile.gif]

RE: Ooh, look what papa got for early Christmas..
 

Here’s a list of some OPS engine and parts distributors:

Australia
www.rcjets.com.au
http://www.hobbydepot.com.au/index.php

Canada
www.niagaramarinehobbies.com
www.johnshobbies.ca

Germany
http://www.hydromarine.de/

Italy
http://www.mantuamodel.com/mantuamod...ntuamodel1.htm
http://www.mantuamodelshop.com/
http://www.zmodel.it/

Sweden
http://www.miniracingteknik.se/

UK
www.mantuamodel.co.uk

USA
http://www.quicktechhobby.com/Engine...ne_engines.htm
http://aeromarinerc.com/
www.funrcboats.com
http://www.happyhobby.com/hobb_html/hobby.htm
www.parmahobby.com
http://www.roguerc.com
www.jensenjetmodels.com
http://www.gotnitroonline.com/




P.S. The model-year 2008 OPS .67 seems to come with a blue anodised cooling head and a further improved piston sleeve assembly: