Veco 19 RC

OS 702 muffler is on one of my 1966 Max OS .10R/C's and with an NOS OS Max .15R/C. Also bought one off E-Bay with a Max .25R/C strap. One on the .10 is not their muffler for this engine (believe the 701 was), but with the slightly larger chamber and it fits the outlet perfectly, will probably run fine without much RPM loss. Following is my OS Max .10R/C temporarily set in a Berkeley Impulse fuselage to check fit.



Because the OS is narrower than the Enya .09-III TV I was planning to use and fits this tight space will most likely be my engine of choice.

Please delete, don't know why my message double posted.

Yes chaps,. The silencer is OS. I bought a job lot of silencers a few weeks ago and have been mixing and matching.

The chances of finding a Veco silencer are pretty slim and this is quite a noisy little beast.

I have mufflers for all of mine, I think, guess I might be guilty of hoarding a few...

The real gem is the McCoy tuned/modded version (black head), it should bring it closer to .21, and it is what once gave the Veco such a good reputation when used in cars

Ian, decades ago.. I was given a scale-model B24 Liberator bomber with four Veco .19 RC engines cowled-in. It had to have been a kit.. "Byron" possibly.. but web-searches didn't prove. All engines had a "wiper" across the exhaust-stack in the linkage-connection with the carburetor. That model was built by a craftsman. I got it third-hand.. and completely unattached as far as history. My friend (a Plumber/hobbyist) found it when doing some plumbing-work. The fellows "widow" said that "it was the last model-airplane to go".. of several that he'd built. I ended up with it... and stored it for years. My brother asked me for it.. as a display; which I was happy to oblige. He went through a divorce... and the B24 and it's four Veco .19's are gone. I do have one propeller. They were propped with 3-blade "Tornado" 9" x 6" tractors.

thread bump... Happy New Year Ian. Hope that you are well. We miss your contributions.

May 2022

Hi roddie,

That was likely a Jack Stafford B-24. Out in 1974 or thereabouts.
This one looks like it has OSFX.25s:


https://www.youtube.com/watch?v=qaiHNA5wUCk

Still have two Veco.19s Dad had in a Brittan-Norman Islander.
The mufflers are the OS.15 ones of the era. Drilled out exhaust holes larger.

I last bench ran them 20-30 yrs ago. Nice engines. Dykes ringed pistons, I believe.
Hope Ian is OK.

Take care,
Have fun,
Dave

Great video Dave, I watched it end to end. A little rough, you would think so after so many flights, but I liked the detail, especially the tail guns.

The B-24 was going to be my next scratch project after doing my P-38 but it never happened. I drew up the plans and did the research. Still not out of reach, a good project for my old age, when I finally get there. Thought about doing the B-17, but the 24 would be the easier build.

A Veco .19 was my first non half A engine IIRC. Must still be around here if I haven't given it away.

rsv1cox wrote:A Veco .19 was my first non half A engine IIRC.  Must still be around here if I haven't given it away.

My first non-Half-A was a Testors McCoy .19 Red Head that I bought from America's Hobby Center in high school. I forgot what I paid for it in 1972, but it was the cheapest bigger non-Half-A at the time, installed it in a Sterling 38 inch F-51 profile C/L model, covered it in chrome Monokote. (Remember the instructions showing how to use a household steam iron? )

I flew it after I returned and got stationed back in Hawaii Summer 1973. Flew it at Waianae Intermediate (7-8th grades) School grounds. (That was when it was located outside of town on the rural side before houses were built nearby, no problems with noise, community, graffiti or school officials.) It flew very trainer like. (I didn't know then, the McCoy .35 RH would have been a better choice.)

Ah, but it was still fun nonetheless, handled the Trade Winds better than the half-A's.

Surfer_kris wrote:I have mufflers for all of mine, I think, guess I might be guilty of hoarding a few... The real gem is the McCoy tuned/modded version (black head), it should bring it closer to .21, and it is what once gave the Veco such a good reputation when used in cars

Your use of the Bernhardt HP mufflers on the Veco .19 caught my attention. Didn't see this until now, @Surfer_kris, use of a Testors Series 21 Black Head head, cylinder and Dyke ring piston with a little machining work to fit a Veco .19 crankcase. (Was the Series 21 crankshaft also reused?) This is innovation at its finest.

HalfaDave wrote:Hi roddie,

That was likely a Jack Stafford B-24.  Out in 1974 or thereabouts.
This one looks like it has OSFX.25s:


https://www.youtube.com/watch?v=qaiHNA5wUCk

Still have two Veco.19s Dad had in a Brittan-Norman Islander.
The mufflers are the OS.15 ones of the era. Drilled out exhaust holes larger.

I last bench ran them 20-30 yrs ago. Nice engines. Dykes ringed pistons, I believe.
Hope Ian is OK.

Take care,
Have fun,
Dave

Hey Dave! Thanks for the post! LoVeD the vid! The B24 that I had.. was probably that same kit. It was at least that big. Not sure if the retracts were "Spring-Air". They may have been Robart units.. but that wouldn't define the kit.. any more than the choice of engines; either one being a required accessory.

Those engines in the vid started and ran pretty nicely. Probably Japanese engines like you said. Still; must be a tough assignment to sync the throttles of four little 2-strokes over their individual power-bands. Regardless.. they sounded sweet and pulled that airplane with authority. That "scale wing" needs a higher than scale speed to maneuver and the landing-approach needed to be pretty "hot". Not sure if his flaps were operational.. but they looked like they could be. Can't scale air-density... unfortunately.

Curious about what the dry weight of the model is.. and the fuel-tank capacity/ies.

I could write for hours about my model airplane thoughts.

I hope Ian is OK also Dave.. Thanks

Hi roddiie,
There is a reason, the two Veco.19s have survived.
Dad crashed the twin, and we made two WW1s.
After that.
The Veco's still run good.
There is no way a Veco.19 has turned any 3 blade prop. I dare you.
9-4 at the most,
The two Dad and I have are ready to go. Dad is 94...
We prefer hand launching,
Wheels are for show.
Your results may vary,
Dave

October 1957 Aeromodeller magazine, H.R. Warring's test on the Veco .19 showed that on 20% nitro, from what I gather, optimal props appear to be 8x5 to 9x3. Those would unload to near 15,000 RPM, where maximum horsepower of 0.316 was developed.

http://sceptreflight.com/Model%20Engine%20Tests/Veco%2019%20%282%29.html

On 3 blade, may be a 7x3 or 7x4? 3 blades are hard enough to come by anyway, so may be a mute point IMO.

I've seen a lot of positive comments about Veco engines.

Hi All,

I have only bench run the two Veco.19s. Both even.
9-4 @ 13K + not peaking, on 15% Nitro and added castor to 20% oil.
The prehistoric carb works very good.
I could throw a smaller prop on it...wants to go. Short strokes like that.
I ran them out, and put auto transmission fluid in, while they were warm.
The OS mufflers have stayed on.
Do Veco .19s have Dykes piston rings? If so, they work great.
This is a myth to me,
Respect,
Dave

HalfaDave wrote:I have only bench run the two Veco.19s. Both even. 9-4 @ 13K + not peaking,  on 15% Nitro and added castor to 20% oil.

H.R. Warring ran his on 20% nitro. His numbers were based on the props of his day. As time marched, props tended to be narrower width. Your 9x4 was probably a match for his 9x3. Looks like once on a plane and in the air, yours would have unloaded to peak HP RPM.

HalfaDave wrote:Do Veco .19s have Dykes piston rings?   If so, they work great. This is a myth to me,

I checked the Sceptre Flight engine articles, the various Veco .19 models to include those later manufactured by K&B did not have Dykes rings. @Surfer_kris did some additional machining to his (last engine in his photo) so he could use a Testors Series 21 Dykes ring piston and head. Reading between the lines, probably machined off the steel fins from the Series 21 cylinder liner to fit the Veco, plus other modifications to fit the Series 21 crankshaft, reused the Series 21 Dykes piston, piston pin, connecting rod, crankshaft, head. Made a new aluminum prop plate. Essentially he had a Testors .19 Series 21 running inside the Veco crankcase.

Never realised...or rather never thought of trying the OS 702 on a Veco....that solves a lot of my problems-I have about half a dozen Veco 19s and only 2 mufflers....and now the problem is solved-as I have quite a few OS-702's....and most of my Max 15s are on FF models where we don't use mufflers in any case.

ChrisM
'ffkiwi'