Author Topic: Venturis for the Magnum/ ASP 15 available again! (Read 9894 times)

bill bischoff · « **on:** December 28, 2013, 07:30:54 PM »

I have venturis for sale to fit the Magnum and ASP 15. They are blue anodized aluminum, .250" bore, and comply with the new Dallas Sportsman Goodyear rules.They are drilled for Supertigre/ RSM or other 4 mm/ 5/32" spraybars.
$10.00 each. I also have RSM needle valve assemblies to fit. $10.00 each. $3.00 postage per order in the US. Send me an email or a PM.

Bill Bischoff

10/1/14 Now back in stock!

Wayne J. Buran · « **Reply #1 on:** January 08, 2014, 07:38:31 PM »

Bill, can you give me an idea on which APC prop you are running and any other details about the project, plane size, motor performance aircraft, whatever.
Thanks
Wayne

bill bischoff · « **Reply #2 on:** January 09, 2014, 10:29:58 AM »

We use the APC 6.5x5 and 6.5x5.5 props. Planes are typical AMA Goodyear size, 22 oz "ish". Performance on .015x52 stranded lines should be about 80 mph, engine RPM 19,000 "ish". My plane is the "BooRay", but there are lots of suitable designs for Goodyear. Flying Models published the taper wing Cassutt, Model Aviation published the Zipper and Li'l Quickie, Model Airplane News published the Rickey Rat, and the R.S. Hirsch books have dozens of 3 views that could be scaled up. Avoid designs with low wings, wing mounted landing gears, and unusually long or short noses.

Bill

Wayne J. Buran · « **Reply #3 on:** January 10, 2014, 06:14:43 PM »

Bill, thanks for the information. Very helpfull. Thanks.
Wayne

bill bischoff · « **Reply #4 on:** September 02, 2014, 09:51:56 AM »

A new batch of venturis is coming soon. Watch for a post when they are ready.

Motorman · « **Reply #5 on:** September 02, 2014, 03:58:31 PM »

Would like to see a bigger pic of the BooRay as I have built one for big goodyear. What is the aspect ratio of the wing?

MM

bill bischoff · « **Reply #6 on:** September 02, 2014, 07:21:14 PM »

I never bothered to calculate the aspect ratio...

don Burke · « **Reply #7 on:** September 02, 2014, 07:44:04 PM »

Quote from: Motorman on September 02, 2014, 03:58:31 PM

Would like to see a bigger pic of the BooRay as I have built one for big goodyear. What is the aspect ratio of the wing?

MM

One way of calculating A/R is Span²/area. Span is on the boo.jpg, (I'm too lazy to break out the slide rule). I believe midgets area is 66 sq ft.

Motorman · « **Reply #8 on:** September 03, 2014, 09:36:04 AM »

Must be a different version, my BooRay has a straight wing.

MM

don Burke · « **Reply #9 on:** September 03, 2014, 10:04:07 AM »

Quote from: Motorman on September 03, 2014, 09:36:04 AM

Must be a different version, my BooRay has a straight wing.

MM

Many of the midgets were built with various wing configurations. Most of the homebuilts were based on Cassuts.

Motorman · « **Reply #10 on:** September 09, 2014, 10:06:44 PM »

BTW, I have a mod for the ASP 15 that will guarantee an increase in power so tremendous that it will send the crankshaft out the front of the motor.

MM

BillLee · « **Reply #11 on:** September 10, 2014, 03:42:22 AM »

Quote from: Motorman on September 09, 2014, 10:06:44 PM

BTW, I have a mod for the ASP 15 that will guarantee an increase in power so tremendous that it will send the crankshaft out the front of the motor.

MM

What event would you use it in, Walt?

Motorman · « **Reply #12 on:** September 10, 2014, 08:45:24 AM »

Whatever event that $43 motor fits in.

BillLee · « **Reply #13 on:** September 10, 2014, 02:57:24 PM »

Quote from: Motorman on September 10, 2014, 08:45:24 AM

Whatever event that $43 motor fits in.

Well, your modified motor wouldn't work for Sportsman GY as it's been defined.

"Engines must be of stock configuration only. No material may be added or removed (except through
normal wear and use), except the engine mounting holes may be enlarged or elongated. No non-stock
parts may be substituted except for the glow plug, venturi, needle valve assembly, ball bearings,
gaskets, screws, prop washer and prop nut."

And that, after all, WAS the context of the OP.

But I WOULD like to know what mod you mean. Care to share?

bill bischoff · « **Reply #14 on:** September 10, 2014, 03:10:59 PM »

You want a guarantee that your engine will break? Let me fly it!

Motorman · « **Reply #15 on:** September 10, 2014, 03:50:28 PM »

Oh so only parts you guys make are allowed?

bill bischoff · « **Reply #16 on:** September 10, 2014, 05:57:37 PM »

I provide venturis and needle assemblies as a convenience. You are not required to use mine. Anything that meets the rules is allowed.

Hey, we've managed to steer this back to the original topic of venturis!

BillLee · « **Reply #17 on:** September 10, 2014, 09:06:24 PM »

Quote from: Motorman on September 10, 2014, 03:50:28 PM

Oh so only parts you guys make are allowed?

You going to share a speed secret?

Mike Callas · « **Reply #18 on:** September 11, 2014, 01:11:35 PM »

FYI Bill
I bought a Magnum, ordered your venture and used it on my OS 15. Works great!
Now I need another one for the Magnum.

Mike

bill bischoff · « **Reply #19 on:** September 13, 2014, 09:21:28 AM »

Mike, I received your payment, but I am out of venturis right now. More are in the works. I will send your order ASAP.

Motorman · « **Reply #20 on:** September 13, 2014, 03:37:13 PM »

Quote from: BillLee on September 10, 2014, 09:06:24 PM

You going to share a speed secret?

It was more of less just joking around, what good does it do to get more power when the engine blows up. I've modified lots of ASP engines when they first came out and I think almost all of them twisted the crank in half. Stopped modding the crank itself and just did other mods and the cranks still broke. Finally realized the shaft in the ASP line is very soft. As for the mod, anybody that knows engines can look at an ASP and it jumps out at you, just don't do it or the crank will come out the front.

MM

BillLee · « **Reply #21 on:** September 13, 2014, 08:29:04 PM »

Quote from: Motorman on September 13, 2014, 03:37:13 PM

It was more of less just joking around, what good does it do to get more power when the engine blows up. I've modified lots of ASP engines when they first came out and I think almost all of them twisted the crank in half. Stopped modding the crank itself and just did other mods and the cranks still broke. Finally realized the shaft in the ASP line is very soft. As for the mod, anybody that knows engines can look at an ASP and it jumps out at you, just don't do it or the crank will come out the front.

MM

Oh, my......

bill bischoff · « **Reply #22 on:** October 01, 2014, 09:30:33 AM »

Venturis and needles in stock again 10/1/14.

bill bischoff · « **Reply #23 on:** May 07, 2015, 12:37:53 PM »

Just a reminder, I still have venturis and needle assemblies in stock.

Phil Krankowski · « **Reply #24 on:** May 07, 2015, 08:09:03 PM »

Will that fit the AP hornet 15?
http://hobbyking.com/hobbyking/store/__25464__AP_Hornet_0_15_Two_Stroke_Glow_Engine.html

Its just going onto a jr ringmaster or something similar.

Phil

bill bischoff · « **Reply #25 on:** May 08, 2015, 12:44:36 PM »

I don't know about that particular engine, but these venturis fit a 10 mm hole in the engine.

Phil Krankowski · « **Reply #26 on:** May 08, 2015, 01:01:06 PM »

Quote from: bill bischoff on May 08, 2015, 12:44:36 PM

I don't know about that particular engine, but these venturis fit a 10 mm hole in the engine.

I just measured. .354 inches, so 9mm, which is a no-go.

Thank you.

Phil