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Search: Posts Made By: I-Love-Jets
Showing results 1 to 25 of 296
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Forum: Extreme Speed Prop Planes
09-10-2009, 08:07 PM
Replies: 20
Views: 7,545
Posted By I-Love-Jets

RE: OPS 120 20cc available in the USA?

Better add your questions to The OPS engine thread: http://www.rcgroups.com/forums/showthread.php?t=970617

It is more comfortable for the speed folks to find OPS specific info concentrated in a...
Forum: Extreme Speed Prop Planes
09-10-2009, 12:02 PM
Replies: 20
Views: 7,545
Posted By I-Love-Jets

RE: OPS 120 20cc available in the USA?

For prop applications the advantage of the OPS .67 RIRE ducted fan or speed engine vs the ROSSI R90 DF engine is not easy to determine.

Both engines reach the power/torque peak when running in...
Forum: Extreme Speed Prop Planes
09-10-2009, 11:35 AM
Replies: 125
Views: 12,904
Posted By I-Love-Jets

RE: New fast airframe in the works

A simple and inexpensive way to make a tuned pipe is a combination of

trimming bar stock aluminium on a lathe (lead-in pipe part + stinger) creating a wall thickness of 1 mm and of
...
Forum: Extreme Speed Prop Planes
09-09-2009, 02:49 PM
Replies: 125
Views: 12,904
Posted By I-Love-Jets

RE: New fast airframe in the works

As far as know MACS #1290 muffled tuned pipe features the identical twin-cone geometry like the #1190. So just cut-off the entire muffler section of your #1290 to obtain a MACS #1190 tuned pipe.
...
Forum: Extreme Speed Prop Planes
09-09-2009, 11:17 AM
Replies: 125
Views: 12,904
Posted By I-Love-Jets

RE: New fast airframe in the works

Do you mean that there's not enough space available for installing the #1190 tuned pipe in the fuse, especially the back reflector cone and the stinger part?

The MACS pipe #1160 sadly features...
Forum: Extreme Speed Prop Planes
09-08-2009, 10:27 PM
Replies: 125
Views: 12,904
Posted By I-Love-Jets

RE: New fast airframe in the works

Well assuming

your highly modified ZG62 will reach 11K rpm unloaded “on pipe” during diving and
you're going to install a narrow swan-neck shaped exhaust header...
Forum: Extreme Speed Prop Planes
09-08-2009, 03:27 PM
Replies: 125
Views: 12,904
Posted By I-Love-Jets

RE: New fast airframe in the works

Well a ROSSI .90 DF engine is a very different animal compared to the West 50V1 being just a higher-timed WEBRA .50 FISE. Talking 5 HP versus 2.5 HP output... [sm=omg_smile.gif]

Because the...
Forum: Extreme Speed Prop Planes
09-05-2009, 09:58 AM
Replies: 81
Views: 6,967
Posted By I-Love-Jets

RE: Shrike .10-OS .25 vrdf project

Well when attempting to increase the carb bore diameter we always need to know the crankshaft bore at its narrowest part. Because we want to maximise the venturi effect of the carb (acceleration of...
Forum: Extreme Speed Prop Planes
09-05-2009, 07:38 AM
Replies: 20
Views: 7,545
Posted By I-Love-Jets

RE: OPS 120 20cc available in the USA?

Attention please – this only happens once in a decade!

There are several NIB gold head 5-ports OPS .60 Super SPP VAE speed engines offered on the large bay auction site. This is THE engine to...
Forum: Glow Engines
09-03-2009, 11:00 AM
Replies: 21
Views: 8,890
Posted By I-Love-Jets

RE: Why are there so few rear exhaust engines?

Here you'll find a lot of info:
The OPS engine thread

We're talking about true ABC constructions, high-timed to set FAI speed records for example...

...
Forum: Extreme Speed Prop Planes
09-01-2009, 05:12 AM
Replies: 81
Views: 6,967
Posted By I-Love-Jets

RE: Shrike .10-OS .25 vrdf project

Getting the engine into its correct power band by using a smaller prop load is one thing, transferring the additional rpm into speed another ;)

A 5.25x9 prop sadly will not be working with a...
Forum: Extreme Speed Prop Planes
08-31-2009, 03:21 PM
Replies: 66
Views: 16,692
Posted By I-Love-Jets

RE: Rossi engine info?

The ROSSI performance figures have been addressed before, see here for instance:

rossi engines, take a look



Well, NOVAROSSI is an independent company and thus has nothing to do with...
Forum: Extreme Speed Prop Planes
08-29-2009, 11:15 AM
Replies: 81
Views: 6,967
Posted By I-Love-Jets

RE: Shrike .10-OS .25 vrdf project

Mostly detailed scale planes come with thicker airfoils leading to more docile flight characteristics and also to slower landing speeds (more scale-like). If you show us a foto of the wing root and...
Forum: Extreme Speed Prop Planes
08-29-2009, 07:19 AM
Replies: 81
Views: 6,967
Posted By I-Love-Jets

RE: Shrike .10-OS .25 vrdf project

Not every Me-163 Komet R/C model is suited for “extreme” speed.

This list for that contains only those Komet kits that are strong enough for even the most abusing flight maneuvers and that...
Forum: Extreme Speed Prop Planes
08-29-2009, 06:50 AM
Replies: 3
Views: 1,241
Posted By I-Love-Jets

RE: Nemesis NXT Sport

Hallo und schön dass Du auch hier postest (hier sind jedoch eher die "kleinen und preiswerten" Zuhause).

So what are the main differences to your existing Nemesis kit?

Are there different...
Forum: Extreme Speed Prop Planes
08-27-2009, 10:41 PM
Replies: 81
Views: 6,967
Posted By I-Love-Jets

RE: Shrike .10-OS .25 vrdf project

To be honest: A Shrike is – like countless other so called speed planes – another example of how to waste speed engine power potential.


The recommended way to go fast should always be...
Forum: Extreme Speed Prop Planes
08-25-2009, 09:59 AM
Replies: 20
Views: 7,545
Posted By I-Love-Jets

RE: OPS 120 20cc available in the USA?

With respect to the availability of OPS aero & marine engines in North America, it would be fine to find a company or a business person that will start selling them again (after Shamrock, Tower and...
Forum: Extreme Speed Prop Planes
08-25-2009, 09:47 AM
Replies: 20
Views: 7,545
Posted By I-Love-Jets

RE: OPS 120 20cc available in the USA?

Well, we all agree that using the 20 cc OPS engine beast is determined by certain boundary conditions:

Like all speed or ducted fan engine it is high-timed (exhaust duration ca 180 degrees)....
Forum: Extreme Speed Prop Planes
08-18-2009, 05:37 AM
Replies: 41
Views: 2,793
Posted By I-Love-Jets

RE: MAGNUMR NOT FAST ENOUGH

There are many alternatives to Magnums, Diamond Dusts etc. commercially available - and some of them deserve the 200 mph designation!

Just take a look at these speed planes everyone can...
Forum: Extreme Speed Prop Planes
08-16-2009, 05:41 AM
Replies: 20
Views: 4,197
Posted By I-Love-Jets

RE: 150 to 200 mph+ speed planes => Where to buy them? - An overview

As mentioned before the conversion from the OPS marine engines to the aero version is very simple:

http://www.rcgroups.com/forums/showthread.php?p=12493959#post12493959
...
Forum: Extreme Speed Prop Planes
08-15-2009, 03:06 PM
Replies: 34
Views: 6,015
Posted By I-Love-Jets

RE: Twin engine speed planes

How about the beautiful full composite DeHavilland DH-88 Comet made by Airworld?


http://www.rcgroups.com/forums/showthread.php?p=12885363#post12885363
Forum: Extreme Speed Prop Planes
08-11-2009, 06:17 PM
Replies: 34
Views: 6,015
Posted By I-Love-Jets

RE: Twin engine speed planes

Another nice Twin that has been optimised for fast combat fighting: The full composite Me-110 by Savex (1:12 scale)

http://www.rcgroups.com/forums/showthread.php?p=12856931#post12856931
Forum: Extreme Speed Prop Planes
08-11-2009, 06:10 PM
Replies: 34
Views: 6,015
Posted By I-Love-Jets

RE: Twin engine speed planes

Yes you're absolutely right. Whenever 200 mph speed claims of Twin- powered speed planes (be it conventional or delta type airframe) show up here it's time for a big smile ;)

For instance, if...
Forum: Extreme Speed Prop Planes
08-11-2009, 02:34 PM
Replies: 34
Views: 6,015
Posted By I-Love-Jets

RE: Twin engine speed planes

A very nice twin-powered fast RC1 type pattern plane is made by Topp-Rippin and called COMET TWIN

Please see:

http://www.rcgroups.com/forums/showthread.php?p=12736538#post12736538
Forum: Extreme Speed Prop Planes
08-04-2009, 05:25 AM
Replies: 20
Views: 4,197
Posted By I-Love-Jets

RE: 150 to 200 mph+ speed planes => Where to buy them? - An overview

The Cobra by Fliegerland is the ideal beginner speed plane for "big blocks" such like your OPS .90 monster (pics below). Be prepared for 190 mph of top speed combined with super easy flying...
Showing results 1 to 25 of 296
 
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