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Everything Radial Engines

Old 08-15-2009, 11:02 AM
  #1651  
blw
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Default RE: Everything Radial Engines


ORIGINAL: n9331v

Anyone know the best fuel to run in a Saito 325. 10% 15% 20% etc.
The engine should love 15% with a little castor. Saitos are fine with 10% too.
Old 08-18-2009, 09:44 AM
  #1652  
Aluminum Overcast
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Default RE: Everything Radial Engines

Sounds and looks great! Thx.
Old 08-18-2009, 09:55 PM
  #1653  
Ram-bro
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Default RE: Everything Radial Engines

This is a n air cooled motor...wow, didnt know or realize that was possible. Was there another plane in the air? I heard the engine kinda coming in and out?.....
Old 08-19-2009, 01:51 AM
  #1654  
Radial power
 
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Default RE: Everything Radial Engines


ORIGINAL: Ram-bro

This is a n air cooled motor...wow, didnt know or realize that was possible. Was there another plane in the air? I heard the engine kinda coming in and out?.....
I suppose you are talking about the third video. The other engines should be snowmobiles (I think you can briefly see them during the takeoff of the plane, in the background).

By the way, these are not my videos. I only found them on youtube.

Radial.
Old 08-19-2009, 03:11 AM
  #1655  
Armin de Vries
 
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Default RE: Everything Radial Engines

My VT 85
http://www.rcmovie.de/video/75d8953c...978e3/VT-85-2R

63 ccm 1/3 scale Anzani W-Motor
http://www.rcmovie.de/video/e37a8f6b...Anzani-W-Motor

Armin
Old 08-19-2009, 02:26 PM
  #1656  
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Default RE: Everything Radial Engines

haha....check out this radial :

http://www.youtube.com/watch?v=f2V7B...eature=related
Old 08-19-2009, 02:54 PM
  #1657  
Aluminum Overcast
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Default RE: Everything Radial Engines

People are doing some CRAZY things.....and thats good!
Old 08-29-2009, 06:48 AM
  #1658  
savex
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Default RE: Everything Radial Engines

Oberursel UR2 - Attrappe

http://www.savex.cz/dopl.php?lang=en&id=144

Regards
Vaclav
Old 08-30-2009, 06:28 PM
  #1659  
Kmot
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Default RE: Everything Radial Engines

Very nice, Vaclav! [sm=thumbup.gif]
Old 09-10-2009, 01:19 PM
  #1660  
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Default RE: Everything Radial Engines

I have captured a video of my asp 400 powered fw 190 now , it is a well flying model and i have lots of flights on it! The asp 400 is absolutely recommended if you want a reliable ,easy to operate and powerful radial engine.

http://www.youtube.com/watch?v=BIQqIkWk9b8
Old 09-10-2009, 01:40 PM
  #1661  
andywakem
 
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Default RE: Everything Radial Engines

What does your fw-190 weigh? and what type of glow driver are you using?
Old 09-10-2009, 01:43 PM
  #1662  
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Default RE: Everything Radial Engines

i dont know exactly ,but between 8.5-9.0 kg. It is made of sheeted foam wings and casted epoxy/fibreglass fuse.

microsense glow 5lp glowdriver and a lipo cell.
Old 09-11-2009, 11:25 AM
  #1663  
Kmot
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Default RE: Everything Radial Engines

Nils: [sm=thumbup.gif][sm=thumbup.gif]
Old 09-30-2009, 04:51 PM
  #1664  
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Default RE: Everything Radial Engines

Some amazing works of metal art:

http://barronaviation.com/Default.aspx?tabid=130&pid=0

[sm=thumbup.gif][sm=thumbup.gif][sm=thumbup.gif]
Old 10-04-2009, 02:37 PM
  #1665  
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Default RE: Everything Radial Engines

Found these vids of the saito radial in the CMP 50cc Zero version.

Looks like it fits nicly under the cowl.

http://www.movie3mai.net/djuMi89NPbBA.html

http://www.movie3mai.net/dV_UCFX2a3Pg.html
Old 10-04-2009, 02:56 PM
  #1666  
Ram-bro
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Default RE: Everything Radial Engines

http://www.movie3mai.net/dV_UCFX2a3Pg.html
saw this one there also
Old 10-05-2009, 02:36 PM
  #1667  
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Default RE: Everything Radial Engines

Hello everyone,

Here is my first radial engine in my first biplane:
- 87'' Zirolli Stearman
- Seidel ST 710 engine
- no muffler (ordered 3 months ago but not yet received)
- glow driver : Microsens Glow7LP + balancer
- total weight: 26 lbs

Only one problem: the test pilot has absolutely wanted to make a “full throttle - nose up” test, and there [sm=what_smile.gif], after a few seconds, the engine slows down, and dies if the throttle is not reduced.
I brought the tank right behind the firewall, change to larger fuel lines, without success.

I partially solved the problem by pressurizing the tank from one of the cylinders exhaust.

I would be curious to know: did somebody succeed in making turn a ST 710 or 770 under these conditions - nose up - more than a few seconds, without pressurization of the tank?


later,
Alain
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Old 10-05-2009, 08:18 PM
  #1668  
jfassino
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Default RE: Everything Radial Engines

Alain,

I'm no help but I love your Stearman. I hope you get the solution quickly so you can share video of your flight.

Thanks for the great pictures.

Jim
Old 10-06-2009, 01:52 PM
  #1669  
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Default RE: Everything Radial Engines

Thank's Jim.

The video is on the way - I did not have time yet to extract it from the camcorder.

Alain
Old 10-07-2009, 06:19 AM
  #1670  
gdutruy
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Default RE: Everything Radial Engines

Looks to me that your mixture is a little bit to lean.

Gilles
Old 10-08-2009, 12:07 PM
  #1671  
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Default RE: Everything Radial Engines

Hello Gilles,

I agree with you - I've seen the more rich I set the needle, the longer time the engine turns before slowing down when nose up.
But even when main needle is set 5 turns out, the phenomenon is still here, and max rpm is around 4700-4800 with a Menz 24x10 in that condition.
It's a great loss of power, since best peak RPM (5000-5100) is got with 2 1/4 turns on main needle.

I've seen you have a ST770.
What's your max RPM ?
Have you pressurized your tank ?


Later,
Alain
Old 10-23-2009, 11:34 PM
  #1672  
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Default RE: Everything Radial Engines

I recently picked up a 1/4 scale Byron Wedell-Williams on a super deal from an outstanding hobby shop in San Jose. When this kit came out the engine of choice was the G62 swinging a 22 x 10. Still a good choice, and now there are now many more great 2C gas engine options to choose from. That said, with the G62, one still needs to add between 12 & 14 ounces to the nose to get the balance correct, so going with some of the newer, lighter options would mean adding more nose weight.. It might be possible to shave an ounce or two if super careful with the tail build, but I'm not sure if it would be worth it from a structural standpoint. Every bit saved with that long moment arm will make a difference, but again I wouldn't want the tail feathers too fragile back there. Flying weight is going to be 23 - 25 pounds. The cowl diameter ID is I believe right around 13 inches give or take an 1/8 or so.

In any event, the reason I bring this up in this forum, is I wonder how well the Saito FA-450R3D would work. I don't have any direct experience, but from what I have read and gathered, it seems like it has the credentials. It will certainly swing the 22 x 10 and then some. I think it has the torque and power. The ones I have heard on line while not RCS/Moki quality, have a terrific sound. The outside dimension of 236 mm looks like it would fit (I'm not certain how fit would be affected if a Kelleo exhaust was used). One downside is being that it is glow fuel powered, it would not be as economical. Another in my opinion smaller downside is that at 99 ounces the Saito would weigh about a pound and a half more than a G62. So if I would not have to add weight to the tail, certainly I would have to move some items further back. As I said, I'm not sure if I see this as a significant negative as with the large fuse, it would be easy to move batteries, etc. behind the CG. It wouldn't make a big hit on the wing loading. If the plane came out a pound heavy, even at 26 pounds, I don't see it making much of a flying difference. I believe that with the G62 the weight would come in closer to the 23 pound mark and with the Saito it would be at the 25 pound mark.

What are some of the "experts" thoughts here?

Lars
Old 10-25-2009, 04:40 PM
  #1673  
nilsreinert123
 
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Default RE: Everything Radial Engines

Hi Lars

I would have bought the Saito 450 , or perhaps a ASP 400 r5 ? I have the ASP and it is a very good engine with a beautiful radial sound , cant compare with a screaming 2 stroke :-) The Saito 450 and ASP 400 weighs the same , but the ASP have 5 cylinders and is cheaper. It is also very overpowered for my plane , weighing 8.9 kilograms. I dont think the ASP would have problem pullinga a 26 lbs plane.
Hope this help you to decide.
Old 10-25-2009, 10:10 PM
  #1674  
LarsL
 
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Default RE: Everything Radial Engines

Hey Nils,

I have a younger brother Nils and an older brother Knut. Our ancestors on my father's side were Swedish (hope you don't mind). We lived in Sweden for three years a long time ago, but I remember we took two fabulous ski vacations to Dombås, Norway. In any event, thanks for your input. I'm thinking that the Saito might be a bit easier to setup, run, & maintain and so perhaps worth a bit of extra cost for me.

Any other input from others, especially those who might have Saito 450's?

Thanks,

Lars
Old 10-31-2009, 08:19 AM
  #1675  
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Default RE: Everything Radial Engines

Just installed the microsens glow driver on my asp 400

Works great. [sm=thumbs_up.gif]


http://www.youtube.com/watch?v=TxGyaZ5jR5s

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