Magnum .32 XLA Engine Sale Hobby People

I received a flyer from Hobby People and a July 4th
sale has a Magnum engine .32 XLA for $39.99.
I thought man that's a good price for a ball bearing engine.

Displacement: 5.26cc
Bore(mm):19.5
Stroke(mm):8.8
Practical RPM:2,000 - 16,000
Weight (w/ muffler): 12.3oz
Crankshaft thread: ¼ - 28

Then the thoughts of converting to control line usage,
1) Venturi 2) N.V.A. 3) Lighter muffler

But, looking at the weight, I thought the thing is a tad on the
portly side.

There are different engine choices out there.
Then I could just leave the carb wired open and save money.

It's the .36 debored.

Remove the muffler and RC carb and it should be around 9 oz. Less than a Fox Mark IV. The .36 would be even lighter.

LAST EDITED ON Jun-30-04 AT 07:49 AM (CDT)
 
The picture shown is the old .32. The new .32 should be an XLS, and have the "weedeater look" square-ish cylinder. The new engine is lighter, and a small bore version of the much touted XLS .36. More data available here on setups, too. The muffler is 56g., not a lightweight, but not as heavy as some. The muffler bolt pattern is same as Fox .35's. Steve

Can't say I've seen a new engine, but the bolt pattern on my "old" .36 wasn't at all like a Fox .35 (which is pretty close to most .28s, including the Magnum). The .36 had a bolt pattern like a Fox Combat Special, except that the fore-aft distance between the holes is greater by maybe 1/16". On mine, I filled the front holes with JB Weld and redrilled to match the Combat Special because I wanted an interchangeable engine.

Hey Isky!,

I'd be interested in a quick "seminar" on your experiances with these motors for combat.

A few of us in the Rocky Mountain Aeromodelers in Denver are still chopping streamers on a regular basis.

Could you share your Combat setup for the .32XL with us?... Venturi diameter, NVA, Tank /Bladder, Fuel % etc.?

I have a couple that I want to set up for S/L Combat. Oh... and also break-in technique advice would help too.

As always many, many thanks in advance!

Cheep Motors and Nitro Fumes!........Hib

LAST EDITED ON Jul-04-04 AT 09:12 PM (CDT)
 
Hello

Well, the ones I ran in Speed Limit were the .28s. Never did have a .32, but I ran a .36 in Fast Combat. The .28s I ran were essentially stock - RC carb removed, of course. I drilled and tapped a hole at the base of the intake boss (near where it meets the crank) and installed a 6-32 DuBro pressure nipple. The needle valve is the usual OS .10FSR or similar RC NVA mounted on the engine mounts and used as a remote.

To get these to slow down to 75mph, I used a 9x4 Top Flite Nylon cut down to 8". I have a bunch of these that some free flight guy gave me some years back. No, they don't shed blades, even at that RPM (I was worried, at first) and they survive some crashes. Try different 8x4 and 9x4 props, or even other sizes - the nice thing about this size engine is that many different setups will work. I know people who run 8x6s at low RPM and it works for them, too. Nice thing about 8x4s is that the plane just whizzes through the turns. A 9x4 prop would slow down in the turns, I found out.

Even this wasn't slow enough, so I started stuffing wood down the venturi. Rather than doing this, if you have a friend with a lathe, get some of those nylon bushings you find in the hardware store, have him turn the base of one down so that it fits in the intake, and then drill and tap the top of it to take a short nylon screw (or if you're really lazy, put in a short sheet metal screw). Voila! Instant variable venturi.

The plane I was flying was a 400 sq. in. arrowshaft type design. An Allenplane would probably work fine if you were using a .32 or .36 instead of a .28.

>I received a flyer from Hobby People and a July 4th
>sale has a Magnum engine .32 XLA for $39.99.
>I thought man that's a good price for a ball bearing engine.

Paul
Do you have a stock number for the 32 from the flyer

>>I received a flyer from Hobby People and a July 4th
>>sale has a Magnum engine .32 XLA for $39.99.
>>I thought man that's a good price for a ball bearing engine.
>
>Paul
>Do you have a stock number for the 32 from the flyer

Hi Terry,

Stock number is #210632