Magnum 36

With an unexpected beautiful day up here in Vancouver a quick call to Keith Varley this morning ended up with a flying session til around noon. For anyone wanting to try a pipe, but holding back due to the cost, let me tell you that the Magnum 36 at $69 is the way to go. Keith's new Saturn with the Magnun is going to be one fine machine once he gets the rust from a long winter removed and the plane trimmed out. I'd heard that Granderson had really scored a winner with this engine but this was the first I'd seen it in action. I can say that this thing rivals the OS Max 40VF of which I've seen a lot fly in the hands of Walker and Chris Cox. The low cost plus the light weight makes this a really good piece of hardware for the aspiring pipe user.

" What he said" I can only express my thanks to Phil Granderson, for discovering this engine and its performance on a pipe. And also to Chris Cox for insisting that I invest the time and money in this combo and also for going to the trouble of borrowing a prop from Texas and producing a mould and letting me have the first off the production line.This is one very pleasant combination of engine and plane . Keith.I can hardly believe that an engine costing $70. and weighing just over eight ounces can perform like this.

> " What he said" I can only express my thanks to Phil
>Granderson, for discovering this engine and its performance
>on a pipe. And also to Chris Cox for insisting that I invest
>the time and money in this combo and also for going to the
>trouble of borrowing a prop from Texas and producing a mould
>and letting me have the first off the production line.This
>is one very pleasant combination of engine and plane .
>Keith.I can hardly believe that an engine costing $70. and
>weighing just over eight ounces can perform like this.

What is the prop he is making? I thought about putting one on my P-force.

LAST EDITED ON Feb-21-04 AT 10:17 AM (CDT)
 
Brad; What we are talking about is a carbon three blade 11/4.as manufactured by Bill Lee. He has a web site but it appears as if he isnt interested in producing any this yesr cause he is too busy running the worlds control line. Chris isnt into making a business either cause he is completely involved building his R.V.8 but since he was so impressed with Phils plane he thought he might like to have one for himself one day. Phil says that very soon a construction article will appear in Model Aviation for his Diva. Right now Pat Johnson is making the plans on auto cad. I found that the A.P.C. 11/4 is very close in performance. R.P.M etc. These carbon props are very thin , narrow blades. I feel sure that you couldnt use this size of prop successfully on that engine without a pipe. Keith V

LAST EDITED ON Feb-21-04 AT 11:34 AM (CDT)
 
Hi Keith,
I am very interested in this set up. My son, Aaron, has a Magnum set up like phil says courtesy of Brett's post.
We are running a Bolly 10 1/2 3 bld. pitched to just under 4. It has made a TREMENDOUS difference in the plane compared to a very good Randy Smith OS 32F.
We have not tried the engine on a pipe.
Bill <><

> " What he said" I can only express my thanks to Phil
>Granderson, for discovering this engine and its performance
>on a pipe. And also to Chris Cox for insisting that I invest
>the time and money in this combo and also for going to the
>trouble of borrowing a prop from Texas and producing a mould
>and letting me have the first off the production line.This
>is one very pleasant combination of engine and plane .
>Keith.I can hardly believe that an engine costing $70. and
>weighing just over eight ounces can perform like this.

Hey, Phil did the smartest thing possible - tried it LIKE IT CAME, instead of immediately assuming it wouldn't work and embarking on head shim and timing changes. All he did was start fiddling with prop and venturi, and came up with something that worked. What he didn't do was start out by buying a jumbo pack of head gaskets and then applying 30 year old engine "magic numbers" to get a good "stunt run".

This should be an object lesson about how you undertake engine development. I doubt there's anything special about the Magnum - it's quite likely to work with a lot of others.

Brett, You are right! We read what you posted from Phil, expected to run it sort of like we do the 40 VF, and it does! The amount of extra power was evident from the first flight. The Ares is around 38 oz, and flew quite well with the RS OS 32F. However it really liked to fly in the 5.0-5.1 range on 62 ft. eye to eye. The plane nows flys with much more authority on the same lines at 5.4! We were also able to go to lower pitch and gain the benefits of that style run.
Thanks to Phil, and to you for relaying the "set up".
Bill <><

Alan,
If you think it runs great on the pipe,which it does.But also runs great in a 4cycle With no pipe.There is one running here in the Salt Lake City, area that runs great too.
Hope to see you soon Alan.

Gordy

Gordy,
I'm really planning on making it down to the Regionals. The new Sukhoi is done but hasn't been in the air yet. Went to the 72 on this one. Hope it flys like last years version.
Alan

LAST EDITED ON Feb-21-04 AT 06:07 PM (CDT)
 
Read this post and went looking online for this engine. Is this it?
http://www.hobbypeople.net/gallery/210640.asp

LAST EDITED ON Feb-21-04 AT 06:13 PM (CDT)
 
Mine weighs in at 8.2 ozs. without the muffler setup like PTG's.

Zuriel

>Read this post and went looking online for this engine. Is
>this it?
>http://www.hobbypeople.net/gallery/210640.asp

Mitch,
That's the one. XL36AII I got ours from there. The venturi from our OS 32F fits right in.
I know you will not be disappointed if you run it like Phil says, and it sure seems to put out a LOT more power than a 36 should.
Bill <><

Bill,

Do you remember when I sold the OS 32 to Aaron? I sold that then because I had replaced it with the Magnum .36 Pro SE (square head) on the same pipe that the 32 was attached to on The Force. I did have Randy replace the bearings later with better ones, but the .36 went on box stock except for the venturi. I didn't know that at the time but it did. Wasn't that somewheres back around '94, '95? I know I had the 32 on the Force at the '92 Nats, and sometime shortly after that upgraded it to the .36 and flew it at Huntersville for years.

I now have a modified Magnum Pro SE (muffled)ready to go into a G' Nobler, a Thunder Tiger AAC (muffled)in my Cavalier profile, and another TT 36 (stock) on a pipe in my 92.5% Saturn. Both of these engines are identical to my knowledge, except for the insignia on the bypass.

Good little motor, no? Good luck with the round head! Let me know how it works out...

Ward

Hi Ward, Yeah I remember us buying the OS 32 at Huntersville. Probably 93-94. Can't really remember the year. Have another fresher OS 32, also.
Both are STILL great running engines, but they don't have the power of the Magnum 36.
I haven't got my Aero Tiger 36 broke in yet, but I do have a Barker TT 36, and Aaron's "new" Magnum 36 XLS. The round head Magnum should be interesting! I expect the high rpm, low pitch set up from it.
Will let you know!
Bill <><

Is your Saturn built right to the Bob Hunt/FM plan, or did you downsize it for the Mag .36? What does the ship weigh?

If the engine is indeed hauling the regular Saturn, that's a lot of engine!

I plan on running one this season with wrap around header & pipe on a 630 sq in SV design.

Rick Campbell

Keith's Saturn is right off the plans. He did use the longest shown nose length due to the light weight of the Magnum. Keep the tail light as Keith still had to add an ounce of nose weight.

>Is your Saturn built right to the Bob Hunt/FM plan, or did
>you downsize it for the Mag .36? What does the ship weigh?
>
>If the engine is indeed hauling the regular Saturn, that's a
>lot of engine!

Not way off most modern 35-40's - it works, but I doubt it's a lot different from a lot of other R/C motors powerwise.

Yes exactly from the plan , 660 sq. inches but lost foam rig not a foam wing and stab as shown. Mine weighs 57 ounces including a lot of nose weight Keith.

The other Magnum 36 thread is here:

http://www.clstunt.com/htdocs/dcforum/DCForumID1/8016.html

Cy