RunRyder RC
 6  Topic Subscribe
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 3658 views
HelicopterEngines Plugs Mufflers Fuel › Engine Lovers Thread
10-02-2015 07:12 PM  26 months agoPost 1
wjvail

rrKey Veteran

Meridian, Mississippi

My Posts: All  Forum  Topic

For years now I've had a side hobby of collecting model engines that interest me. Some remind me of my youth. Some are historic. Some I picked up just because I think they are good looking.

So here is the idea. Post a picture or two of an engine that you have collected that you think everyone else might enjoy. It doesn't have to be a helicopter engine. It doesn't have to be a rare engine. It doesn't have to be a historic engine. It just has to be an engine you own that has a place in your heart. Write a little something as to why you like it.
-----------------
I'll start.

Not too long ago I picked up an OPS Super 65 Control Line Speed engine. I have flown a lot of control line events but I never flew speed. It's not that I didn't want to. I just never had the time or money.

This engine has been sitting on my desk for the last few weeks and in addition to being one of the most powerful 65s ever made, it has to be one of the best looking. Model 2-stroke engines have been evolving for 100 years now and this has to be near the pinnacle in many respects.

Comments welcome.

Alright. Who's next?

Cheers,

Bill

"Well, Nothing bad can happen now."

PM  EMAIL  GALLERY  Attn:RR  Quote
10-03-2015 09:36 AM  26 months agoPost 2
PaulBowen

rrVeteran

Victoria, Australia.

My Posts: All  Forum  Topic

Stunning engine and a great thread idea. Beautiful spinner!

PM  EMAIL  GALLERY  Attn:RR  Quote
10-04-2015 01:18 AM  26 months agoPost 3
Gearhead

rrMaster

Vt

My Posts: All  Forum  Topic

I have had a few OPS engines over the years> two 90 and one 45 boat engines, and I had a gold head 65 rear ex, but I think it had a Rc carb,, they are great engines,

here is my G Mark 061 and my Super Tartan 22cc and super Tartan 44cc, these engines have been started but never mounted in a plane

Jim
Buzz Buzz Buzz

PM  EMAIL  GALLERY  Attn:RR  Quote
10-04-2015 01:22 AM  26 months agoPost 4
wjvail

rrKey Veteran

Meridian, Mississippi

My Posts: All  Forum  Topic

Stunning engine and a great thread idea. Beautiful spinner!
Cheers Paul. The spinner is as much a work of art as engine itself. It is more than just a spinner. It is the prop drive washer and is it sized for a "D" speed pan.

This engine is special to me as it designed for a very singular purpose. That is, it was designed to power a very small plane for a very short period of time. It wasn't designed to idle. It wasn't designed with any thoughts to broadening the power band. Fuel consumption never entered the equation. Propeller pitch times rpm equals velocity. This engine has one purposes. It is the pinnacle of pulling the most pitch at the highest rpm. Period.

Bill

"Well, Nothing bad can happen now."

PM  EMAIL  GALLERY  Attn:RR  Quote
10-04-2015 02:01 AM  26 months agoPost 5
wjvail

rrKey Veteran

Meridian, Mississippi

My Posts: All  Forum  Topic

Here is my G Mark 061 and my Super Tartan 22cc and super Tartan 44cc, these engines have been started but never mounted in a plane.
Nice Jim.

I have looked at the Tartans many times over the years. They somehow just look right. I always admired their beautiful cylinder and case castings. They have the finest cooling fins I've ever seen on a gas engine. They look like an aircraft engine should.

They had a reputation of not running very well out of the box. Any thoughts?

Bill

"Well, Nothing bad can happen now."

PM  EMAIL  GALLERY  Attn:RR  Quote
10-08-2015 04:39 PM  26 months agoPost 6
wjvail

rrKey Veteran

Meridian, Mississippi

My Posts: All  Forum  Topic

I'm sorry I didn't get back to this thread sooner. I had to step away from my desk for a few days. I'd like to keep this thread going if possible... if anyone is enjoying it...

So some time after the earth cooled, but before the internet, there were hobby shops. If you wanted hobby items you not only could buy them at the hobby shop, you had to buy them at the hobby shop.

If you were building a new airplane and needed an engine, you would go to the LHS and they would have a large case of engines for you to choose from.

In these times a good running engine was important but an engine that looked good in the case could also really help close a sale.

I've uploaded a few pictures of my Merco .61 R.C. Black Steak. I've also included a few pictures of its packaging. The engine not only came in a gold box with a red velveteen lining, but that box came in a box so that it would remain presentable after shipping.

This engine is really one of the finest examples of an engine that was meant to not only run well, but also look good doing it. It comes from a time when engines came from a retail store case and you could look at them and hold them before buying one. An engine that ran well but looked like a lump of coal in your hand or the LHS display case was really at a disadvantage.

Cheers,

Bill

http://sceptreflight.net/Model%20En...%20Mk%20II.html

"Well, Nothing bad can happen now."

PM  EMAIL  GALLERY  Attn:RR  Quote
10-08-2015 05:10 PM  26 months agoPost 7
jbjones

rrVeteran

Columbus, Mississippi

My Posts: All  Forum  Topic

Very cool. Keep it going, Bill.

-JB

J. B. Jones

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-08-2015 05:41 PM  26 months agoPost 8
xcellgasman101

rrElite Veteran

WOODWARD, OKLA....

My Posts: All  Forum  Topic

Subscribed!!! Cool Topic,,, XGM/VGM

John Crotts
www.soonerhelicamproductions.com

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-08-2015 07:22 PM  26 months agoPost 9
PaulBowen

rrVeteran

Victoria, Australia.

My Posts: All  Forum  Topic

Nice one!

PM  EMAIL  GALLERY  Attn:RR  Quote
10-08-2015 09:33 PM  26 months agoPost 10
CHiatt

rrApprentice

Winter Garden, FL

My Posts: All  Forum  Topic

OPS 60 Speed SPA RCA

I had one of these in a Southern R/C Bootlegger in 1979, with OPS pipe and slide valve carb.

Now I have a new one, in a new Bootlegger, as of 2013!

I love the sound of a piped short stroke 60!!!

Cliff

PM  EMAIL  Attn:RR  Quote
10-09-2015 02:41 PM  26 months agoPost 11
wjvail

rrKey Veteran

Meridian, Mississippi

My Posts: All  Forum  Topic

Cliff,

That is both a spectacular engine and plane.

I have collected a disproportionate number of 60s over the years. The AMA pattern rules remained stable for decades. The rules specified a 10cc engine. As you know, this lead to great development in the 60/61 class of engines. AMA pattern engines can trace their roots back to the cross scavenged engines such as the Veco, through the Super Tigre Blue heads, and into the piped loop scavenged/Schnuerle engines such as the Webra Speed/OPS/Rossi. When you look at these engines today you can see the development. You can see humans learning.

Of course competition helicopters were also restricted to 10cc for many years. But because they are relative newcomers, helis did not contribute as much to engine development as RC pattern.

It seems AMA RC pattern changed forever with the introduction of 4C engines and turnaround-style pattern. Public concern for sound levels didn't help. It ended the age of those really wonderful 10cc pattern engines.

As a side note, I don't understand why the airplanes had to go away.?.? Years and years of development went into designing the perfect AMA pattern plane. They were simply wonderful planes. Even if they don't have a specific competition class in the AMA rule book, they are none the less GREAT airplanes.

As you said, I love the sound of a two stroke on the pipe! When the waves all line up just right, and the engine picks up those last few thousand rpm, it is the sound of an engine just singing along.

You forgot to mention the small print on the black and white photo. I can see why you might keep one of these engines around. Little wonder the OOOPS might be special to you!

Bill

"Well, Nothing bad can happen now."

PM  EMAIL  GALLERY  Attn:RR  Quote
10-09-2015 03:27 PM  26 months agoPost 12
wjvail

rrKey Veteran

Meridian, Mississippi

My Posts: All  Forum  Topic

Some number of years ago I picked up an engine similar to Cliff's. It has a similar slide carburetor and similar 4 bolt head. This engine differs from Cliff's in that it is a side exhaust engine and the porting arrangement is different. I believe Cliff's red head engine is a 3 port engine and the engine pictured here is a later version.

I added this engine to my collection because, to me, it represent the final developmental stages of both OPS and the AMA pattern engine. At the time of this writing, it seems that glow engines have seen their peak in popularity. I don't know how much money and time will be spent by manufactures to develop an engine better than the one pictured.

Similarly, I wonder if OPS hasn't seen its best days. When I was young, OPS was distributed by Bob Murphy and Shamrock Competition imports. Parts and engines were readily available and affordable. While OPS is still a major player in the boating world, I don't see boating itself being what it once was.

Notes:

-- I've always found it fascinating that model engine cylinder heads come with between 4 and 8 bolts and there doesn't seem to be any rhyme or reason. Some of the most developed and powerful engines ever made are 4 bolt heads.

-- OPS did not get greedy with the size of the carb. In fact, it looks undersized. I haven't run this engine but my guess is that it has fantastic fuel draw and I've always had great experiences with slide carburetors.

-- Notice how similar this engine looks to the 65 speed engine I posted earlier. While is has a similar head and porting arrangement, it is a completely different engine. At first glance it looks like these two engines should share many parts. I doubt they share any parts....

-- The literature in the box for this engine is dated 2001 making this engine about 15 years old.

Bill

"Well, Nothing bad can happen now."

PM  EMAIL  GALLERY  Attn:RR  Quote
10-10-2015 12:39 AM  26 months agoPost 13
Gearhead

rrMaster

Vt

My Posts: All  Forum  Topic

They had a reputation of not running very well out of the box. Any thoughts?
well for the Tartan glow engines, I have different thoughts for your question, I say that because I think different people were having different problems,, so my thoughts on your question, are,

1) the Tartans were setup to burn straight Methanol, NO Nitro, and like the large Super Tiger engines many people were simply using 5% Nitro and 10% and higher, that I do know that happened,,
note that the large Super Tiger engines run well on 5% Nitro, but would NOT run well on 15% Nitro, but, you can NOT use %5 or higher in the Tartans !!

2) again they burn straight Methanol, and many people were not using a hot enough plug, the OS 8 and the Enya 3 are not hot enough for the Tartans

3) the Tartans are a high compression engines, they have a Ratio of 11:1 compression, if too short of a plug is used the end of the plug will set inside the threads and can be flooded out with fuel

4) the older Tartans came with a flat (90 degree) metal Reed Valve, it would not surprise me that these metal Reed Valves need to be change more frequently than what people thought,,,,
also note here that Tartan did later on change out the 90 degree Flat Reed for the V-shaped Reed

5) also, there was a reason why Tartan changed out the Italian made Dellorto carbs for the better Walbro carbs

6) as said these engines are a high compression engine, yet they have a short Exhaust Port Timing, I think many people, even more people tried to run too short of a Prop with too large of a pitch, I think that these engines should use a larger diameter Prop to get more "Flywheel effect" at mid to lower RPMs, therefore with a larger Prop you would use less pitch

7) and of course some people could have had more than 1 of these problems at the same time, and they could have just gave up on them

Jim
Buzz Buzz Buzz

PM  EMAIL  GALLERY  Attn:RR  Quote
10-10-2015 01:24 AM  26 months agoPost 14
Gearhead

rrMaster

Vt

My Posts: All  Forum  Topic

I also have an HB PDP 61, like the one in the photo below,, mine was made in 1983 in Germany, has a steel Liner, what a beautifully made engine, never been started, I plain to fly it next summer, I will put an OS carb on it because they are so easy to tune

sorry I could not find the photo of my engine, I got this photo off the Internet

Jim
Buzz Buzz Buzz

PM  EMAIL  GALLERY  Attn:RR  Quote
10-11-2015 04:07 AM  26 months agoPost 15
human213

rrVeteran

malibu

My Posts: All  Forum  Topic

Availability

Is that OPS engine available for sale anywhere?

It is simply beautiful

mj

Not everything that can be counted counts, and not everything that counts can be counted.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-11-2015 02:39 PM  26 months agoPost 16
wjvail

rrKey Veteran

Meridian, Mississippi

My Posts: All  Forum  Topic

Is that OPS engine available for sale anywhere?
mj - Which OPS are you referencing - the throttled front intake that Cliff and I posted or the rear intake/ rear exhaust I posted first?

I don't believe the RC version is currently being made. In fact, while OPS does make RC engines, they are entirely marine engines or car engines. As far as I can tell OPS does not currently make any conventional RC aero engines. It really is a shame and one of the reasons I've collected a few OPS engines lately.

Oddly enough the Control Line (CL) D speed engine is currently available - although it is a rare find.

You might ask why, if you were going to make only one aero engine, would it be such a niche engine as a control line speed engine? I believe the answer is that it is an adapted marine engine. Because the front housing is removable on most of their marine engines, it was a small matter for OPS to turn the case around, produce a venturi, and machine a spinner.

I might add - It would be a mistake to consider the .65 speed engine a cobbled together half effort. The OPS marine engines are monster engines in their own right and massaging one to meet D speed requirements is an ideal situation.

Cheers,

Bill

"Well, Nothing bad can happen now."

PM  EMAIL  GALLERY  Attn:RR  Quote
10-11-2015 06:04 PM  26 months agoPost 17
wjvail

rrKey Veteran

Meridian, Mississippi

My Posts: All  Forum  Topic

When I started this thread wasn't sure what direction it would take. My hope was that it would follow its own path and just wander. It seems we are beginning with a look at 10/11cc class engines.

The throttled OPS I posted last is truly a wonderful example of a fully developed 10cc pattern engine. But as I mentioned in my last post, it may not be currently available. It seems the development of OPS as a front intake carbureted aircraft engine is on hold.

Novarossi, however, is still making what would be considered a classic pattern engine. Like previous engines, it is not only a high performance engine - it's pretty easy to look at too!

Notes:

-- As I mentioned in a previous post, I find it interesting to look at the head bolt arrangement of various engines. Because I happen to have both the Novarossi and OPS out at the same time, I uploaded a few pictures of the two together. OPS seemed to think 4 was the correct answer. Novarossi skipped 6 altogether and went right to 8.

-- Something that is common to almost all high performance engines it that the head is of two piece design.

-- Like the OPS, it seems the carburetor is not oversize. It should draw fuel well. Notice this engine come with a provision for in-flight mixture adjustment.

-- For the second time, why did they stop making airplanes for these engines?

Cheers,

Bill

"Well, Nothing bad can happen now."

PM  EMAIL  GALLERY  Attn:RR  Quote
10-12-2015 01:19 AM  26 months agoPost 18
jbjones

rrVeteran

Columbus, Mississippi

My Posts: All  Forum  Topic

Nice NovaRossi you have, Bill. As you know, I tried NR heli engines (.91 and .57) with not much luck. However, their Marine engines are absolutely top-notch! Love the NR race engines.

Here's my 7.5cc NR Outboard. This thing screams!

J. B. Jones

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
10-12-2015 02:23 AM  26 months agoPost 19
Todd74

rrApprentice

PA, USA

My Posts: All  Forum  Topic

I occasionally mess with nitro 1/8 scale buggies, and I always thought the Novarossi line of car engines are pretty awesome. They absolutely shriek at 40,000+ rpm. These happen to be on-road engines, which really are tuned for max rpm.

PM  EMAIL  Attn:RR  Quote
10-14-2015 02:46 AM  26 months agoPost 20
Gearhead

rrMaster

Vt

My Posts: All  Forum  Topic

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 3658 views
HelicopterEngines Plugs Mufflers Fuel › Engine Lovers Thread
 Print TOPIC  Make Suggestion 

 6  Topic Subscribe

Sunday, December 17 - 4:30 am - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online