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Post  rsv1cox on Mon Nov 03, 2014 9:33 am

I tend to buy other peoples cast-offs and try to make them whole. Need proof? I drive MGB's for heavens sake.

My first Holland Hornet came as described and complete, it has been down-hill ever since. The second one arrived with a smoke stack for a venturi and the third without a venturi or a needle valve/spray bar. No problem with the needle valve and spray bar, got those from MECOA, but they don't have the venturi.

Problems in the Hornets nest Pbucket

I'm wondering if the venturi is really necessary?

I see that the spray bar comes in from different sides of two of the engines, but the one with the missing spray bar/venturi is drilled so the spray bar can only be inserted from the left side. Curious.
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Post  RknRusty on Mon Nov 03, 2014 10:56 am

Without the venturi it likely won't pull enough vacuum to draw fuel out of a tank. But if you can't get one or make one for it, buy one of the fine thread(128tpi) needle valves from TexasTimers.com and run it on a pressure bladder. It should run great like that.
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Post  rsv1cox on Mon Nov 03, 2014 11:54 am

Thanks Rusty, I'll make up one of those bladders and give it a try. I have read here that they provide an even run and aid performance but can be tricky to install.

I think I will power up the one with the "smoke stack" venturi just to see how it goes. If it turns 30K I will send it to Kim as an entry in the tach race. Laughing
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Post  Mark Boesen on Mon Nov 03, 2014 12:52 pm

Hi Bob,

Nice looking collection you're growing!

On the middle Hornet, somebody added that venturi, it'll probably work but its definitely not factory (I think the needle is 128TPI) when you press it in make sure the spray hole is pointing down in the intake, if its loose a little JB weld will lock'er in.

Rusty is right, you could probably bench them without the insert, but for flight you'll need pressure.

The Tach Race is for Cox engines only...maybe we could do a Holland, Fox, K&B, etc. someday!


P.S. I always like the MG's, had a chance to buy a new Midget ('78) when I in the Navy (HT18) boutht a '67 Chevelle instead!
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Post  rsv1cox on Mon Nov 03, 2014 2:40 pm

Hi Mark,

Yes,  I use a fine point sharpie and dot the top 180 out then use it as a guide to ensure the hole goes straight down the pipe....  That spray bar is a tight fit.  I wonder why two of the three Holland's have had the venturi  removed.  Huh...

You made the right decision to buy the Chevelle.  I bought a 74 MG Midget a couple of years ago, spent a year rebuilding and detailing the engine and compartment then drove it.   Sad   Sold it a few months ago.  

Problems in the Hornets nest Pbucket

Take a look at the spinner on that middle Hornet.  Looks like it took a header into the concrete.  

Just wondering.. Did you ever have one of these in your collection?

http://www.ebay.com/itm/Wen-Mac-Marine-Cutlass-Gas-Powered-Airplane-1959-/221592577307?pt=US_Radio_Control_Control_Line&hash=item3397f2651b

When I was in VA 35 at NAS Jacksonville I saw one take off almost straight up. Most impressive.

Bob
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Post  roddie on Mon Nov 03, 2014 3:55 pm

rsv1cox wrote:

Just wondering.. Did you ever have one of these in your collection?

http://www.ebay.com/itm/Wen-Mac-Marine-Cutlass-Gas-Powered-Airplane-1959-/221592577307?pt=US_Radio_Control_Control_Line&hash=item3397f2651b

When I was in VA 35 at NAS Jacksonville I saw one take off almost straight up.  Most impressive.

Bob

Hi Bob. That Cutlass is COOL! Kinda' makes me want to search 1/2A c/l plans for pushers.. just for some design ideas. Popcorn I wonder if there are any pusher-stunt designs?
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Post  rsv1cox on Mon Nov 03, 2014 5:03 pm

Crying or Very sad
roddie wrote:
rsv1cox wrote:

Just wondering.. Did you ever have one of these in your collection?

http://www.ebay.com/itm/Wen-Mac-Marine-Cutlass-Gas-Powered-Airplane-1959-/221592577307?pt=US_Radio_Control_Control_Line&hash=item3397f2651b

When I was in VA 35 at NAS Jacksonville I saw one take off almost straight up.  Most impressive.

Bob

Hi Bob. That Cutlass is COOL! Kinda' makes me want to search 1/2A c/l plans for pushers.. just for some design ideas. Popcorn I wonder if there are any pusher-stunt designs?

I dunno.  But great minds (well, maybe on your part) think alike.  I would love to build a pusher also.  I really like that model Cutlass, were it not for the "crack in the canopy" Smile and the price Crying or Very sad I would buy it.

Bob
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Post  RknRusty on Mon Nov 03, 2014 8:56 pm

rsv1cox wrote:Thanks Rusty, I'll make up one of those bladders and give it a try.  I have read here that they provide an even run and aid performance but can be tricky to install....
Actually it's the most un-tricky fuel system you'll ever use for control line. Its relatively uncommon use just leads to the mystery surrounding it. Once you try it, it's a total head slapper. As I've said before, once you go bladder, you'll never go back. We can help you get started if you want to try it.
Rusty

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Post  Cribbs74 on Mon Nov 03, 2014 9:08 pm

rsv1cox wrote:Hi Mark,

Yes,  I use a fine point sharpie and dot the top 180 out then use it as a guide to ensure the hole goes straight down the pipe....  That spray bar is a tight fit.  I wonder why two of the three Holland's have had the venturi  removed.  Huh...

You made the right decision to buy the Chevelle.  I bought a 74 MG Midget a couple of years ago, spent a year rebuilding and detailing the engine and compartment then drove it.   Sad   Sold it a few months ago.  

Problems in the Hornets nest Pbucket

Take a look at the spinner on that middle Hornet.  Looks like it took a header into the concrete.  

Just wondering.. Did you ever have one of these in your collection?

http://www.ebay.com/itm/Wen-Mac-Marine-Cutlass-Gas-Powered-Airplane-1959-/221592577307?pt=US_Radio_Control_Control_Line&hash=item3397f2651b

When I was in VA 35 at NAS Jacksonville I saw one take off almost straight up.  Most impressive.

Bob

Bob,

Your Midget was identical to mine down to the color. I think of all the years available the 72-74 is the most appealing. I like the rounded rear quarters.

A Datsun tranny completely transforms that car. I wish I had never let mine go. Stupid!!!!

I didn't mention this earlier.... The MGA is going to be a stock looking car, but is going to sport a 302. I think I can do this without modifying anything external. No louvers, scoops etc. I am going to ensure the track width is stock with a narrowed axle. It's going to be all Brit, with an American power plant.
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Post  roddie on Mon Nov 03, 2014 9:31 pm

Cribbs74 wrote:
rsv1cox wrote:Hi Mark,

Yes,  I use a fine point sharpie and dot the top 180 out then use it as a guide to ensure the hole goes straight down the pipe....  That spray bar is a tight fit.  I wonder why two of the three Holland's have had the venturi  removed.  Huh...

You made the right decision to buy the Chevelle.  I bought a 74 MG Midget a couple of years ago, spent a year rebuilding and detailing the engine and compartment then drove it.   Sad   Sold it a few months ago.  

Problems in the Hornets nest Pbucket

Take a look at the spinner on that middle Hornet.  Looks like it took a header into the concrete.  

Just wondering.. Did you ever have one of these in your collection?

http://www.ebay.com/itm/Wen-Mac-Marine-Cutlass-Gas-Powered-Airplane-1959-/221592577307?pt=US_Radio_Control_Control_Line&hash=item3397f2651b

When I was in VA 35 at NAS Jacksonville I saw one take off almost straight up.  Most impressive.

Bob

Bob,

Your Midget was identical to mine down to the color. I think of all the years available the 72-74 is the most appealing. I like the rounded rear quarters.

A Datsun tranny completely transforms that car. I wish I had never let mine go. Stupid!!!!

I didn't mention this earlier.... The MGA is going to be a stock looking car, but is going to sport a 302. I think I can do this without modifying anything external. No louvers, scoops etc. I am going to ensure the track width is stock with a narrowed axle. It's going to be all Brit, with an American power plant.

Sweet.. a small-block V8. Another option (if your a Ford guy.. ) is the HO 3.0L V6.. available in multiple configurations.
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Post  Mark Boesen on Mon Nov 03, 2014 11:20 pm

rsv1cox wrote:Hi Mark,
Just wondering.. Did you ever have one of these in your collection?

Yep, one of my favorites, it was pretty dirty, but got it for a good price!
Problems in the Hornets nest 00710
Throttle control...for carrier landings!
Problems in the Hornets nest 04811

As far as the damaged spinner, remember you can screw it onto a bolt, slap it in a drill and hit it with a file or fine sandpaper.

I'm guessing the engines were ran on pressure at some point.
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Post  Oldenginerod on Tue Nov 04, 2014 1:03 am

Mark.
The starter of the Cutlass looks like a recipe for disaster. Bad enough having the infamous Wen Mac starter string flopping around near the prop, but on a pusher? I'd imagine there'd be little of the loop on the end left after the first flight- it'd be getting sucked straight into the prop.
Rod.
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Post  rsv1cox on Tue Nov 04, 2014 10:01 am

Well Mark, on this election day I would have to cast a vote for that F7U Cutlass model as the best looking plastic airplane ever.  Such a marvelous clean-up job!

You must have spent some time on that engine.  I know the effort that polishing to that level takes.  I see that it has the variable exhaust restrictor plate.  The model I linked to doesn't.  I have a similar engine coming and just got another yesterday in a batch of junk engines with that plate.  I would jump on that Black model F7U if it was in better condition.  

Is that a tube coming out of the string hole rather than the more common eyelet?

Lot's of history on the F7U on Wikipedia.  I actually saw the German Arados that were tested at Patuxent River and on which some say the Cutlass was based.  After they got through testing them they just bull dosed them and dumped them near the Bay.  Such a shame.

And....I agree with Rod, that pull-string would present a problem.
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Post  roddie on Tue Nov 04, 2014 2:28 pm

Mark Boesen wrote:
rsv1cox wrote:Hi Mark,
Just wondering.. Did you ever have one of these in your collection?

Yep, one of my favorites,  it was pretty dirty, but got it for a good price!
Problems in the Hornets nest 00710
Throttle control...for carrier landings!
Problems in the Hornets nest 04811

As far as the damaged spinner, remember you can screw it onto a bolt, slap it in a drill and hit it with a file or fine sandpaper.

I'm guessing the engines were ran on pressure at some point.

That starter-spring loop could be retained using a simple spring-hook mounted fwd. of the engine. I see what looks like a hole on the top of the fuse.. forward of the tank vents. Possibly a spot for a small screw to secure a hook. Maybe even a thin plastic "fender-washer" that the cable-loop can slip around and under?
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Post  Cribbs74 on Tue Nov 04, 2014 2:57 pm

Is it my eyes or is the rudder offset towards the pilot? Perhaps it has something to do with the pusher mount? Or maybe it was designed to fly clockwise?

Ron
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Post  rsv1cox on Tue Nov 04, 2014 3:34 pm

So, they must have offered the F7U model in two variations, standard and carrier versions. It looks stock, not modified, but I see no link-up to actuate the restrictor?
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Post  Mark Boesen on Fri Nov 07, 2014 10:57 am

They were designed to fly clockwise, if you were able to start it.

I don't remember how the throttle was hooked up, never had a info sheet on it.

I try not to polish plastic, if you do, it doesn't have the factory look, it looks over polished. I'll clean it and used a dry clean terry cloth with a little elbow grease with very light pressure.
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