# Verner Anounced suspensoin of production for 3V and 5V radials

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#### pictsidhe

##### Well-Known Member
Dollars to Donuts that the Polini powered Skylite meets 103 weight a LOT easier and with a lot less structural tomfoolery than the half VW.

NO OFFENSE or disrespect to Mr. Casler or what he provides.
I have a vague memory of Ed Fisher saying that to meet 103, nothing heavier than a 277 can be used on a Skylite. That puts a 1/2 VW right out.

##### Well-Known Member
Log Member
I have a vague memory of Ed Fisher saying that to meet 103, nothing heavier than a 277 can be used on a Skylite. That puts a 1/2 VW right out.
Yes this is what Ed told me as well. However the Verner would have made it since the cowl, nosebowl and heavy exhaust could have been eliminated. Also would have made a few other substitutions to cut weight just in case.

#### GeeZee

HBA Supporter
Ok that’s just crazy. A 60% scale stearman is as big as a Hatz. With regards to the 7cyl radial what’s the catch? 45hp, 61lbs under 10k$. Seems like quite a bargain as far as aircraft engines go. Watched the video. Looks like open rocker boxes and exposed pushrods? Hope I’m wrong. That engine could easily replace a Verner 3 cyl If it has a decent TBO and reliability. #### Vigilant1 ##### Well-Known Member Lifetime Supporter . With regards to the 7cyl radial what’s the catch? 45hp, 61lbs under 10k$. Seems like quite a bargain as far as aircraft engines go. Watched the video. Looks like open rocker boxes and exposed pushrods? Hope I’m wrong. That engine could easily replace a Verner 3 cyl If it has a decent TBO and reliability.
The weight isn't clear on the factory spec page. "Product weight" is listed as 35 kg (77 lbs). 45 hp from a 4 stroke air cooled 800cc engine at 3800 rpm is .. . ummm, well, maybe it is just intended as an estimate. They are recommending high octane fuel, so maybe they are running high CR and getting high specific power, but that won't fix the heat issue. I'd wonder about the CHTs in continuous use, and overall expected reliability.
The engine sound and look is very nice.

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#### blane.c

##### Well-Known Member
HBA Supporter
Videos VM R5-420

Specifications:
• Cylinder: 5
• Displacement: 420 cc
• Output: ca. 25 hp
• Bore: 47 mm
• Stroke: 48.5 mm
• Diameter: 425 mm
• Length from engine mount to prop hub: 255 mm
• Weight: 11.8 kg
• Ignition voltage range: 6 - 9 V
• Idle RPM: 800
• Max RPM: 4500
• Propeller size:
• Fiala Prop 2-Blade: 38x24" to 42x20"
• Fiala Prop 3-Blade: 36x24" to 40x18"

With 20" pitch prop max speed no slip 85 mph, figuring 85% efficiency 72mph@4500rpm
With 24" pitch prop 85% is 87mph@4500rpm
If of course you could get 4500rpm.

#### GeeZee

##### Well-Known Member
HBA Supporter
“They are recommending high octane fuel, so maybe they are running high CR and getting high specific power, but that won't fix the heat issue. I'd wonder about the CHTs in continuous use, and overall expected reliability.”

Agree. Wonder what kind of a “nudge” it would take to get them to make a version more suited the EAB market.

#### Bille Floyd

##### Well-Known Member
...
I'd wonder about the CHTs in continuous use, and overall expected reliability.”
...
Parts availability , would be my main concern ; how long is this
company gonna stay in business , because i'm going to need
the rebuild, the moment they fold !

dirt bike ; then cutting the engine trani off , and make a belt reduction.
I already know that a total rebuild in parts is gonna cost me under $1k. If it worked : now i have a 4-stroke that makes near 40Hp, and i only need 30hp of that, and they toss in a dual EFI that's proven. It's Tempting ... I wonder how much weight i'd save ; by dicing off the transmission on that engine ? Bille #### cluttonfred ##### Well-Known Member HBA Supporter I suspect it's just the opposite...don't even mention using them on real airplanes or they will freak out. Agree. Wonder what kind of a “nudge” it would take to get them to make a version more suited the EAB market. BJC #### pictsidhe ##### Well-Known Member Parts availability , would be my main concern ; how long is this company gonna stay in business , because i'm going to need the rebuild, the moment they fold ! I'm actually leaning towards buying a 2011 or newer KX250F dirt bike ; then cutting the engine trani off , and make a belt reduction. I already know that a total rebuild in parts is gonna cost me under$1k.
If it worked : now i have a 4-stroke that makes near 40Hp, and i
only need 30hp of that, and they toss in a dual EFI that's proven.
It's Tempting ...

I wonder how much weight i'd save ; by dicing off the transmission on
that engine ?

Bille
Dana was flying a paramotor with a converted KX100. He adapted the stock transmission. I believe he replaced the clutch with a TV damper of some kind.

#### GeeZee

##### Well-Known Member
HBA Supporter
I suspect it's just the opposite...don't even mention using them on real airplanes or they will freak out.

You are most likely correct. Or if they did consider it the cost would have to triple to cover the inevitable future lawsuits.