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HomeAircraftHelicopterEngines Plugs Mufflers Fuel › new webra 55
05-03-2005 08:23 PM  13 years agoPost 41
nivlek

rrProfessor

Norfolk England

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Personally I do like to put a prop on an engine and fly it in a fixed wing model to run it in , but you can put it straight in your heli if you like . With an ABN engine , a drop of castor in your fuel is a good idea , especially for running in . One thing that you must not do is to run the engine too rich or you risk it seizing up . This may sound strange , but the ABN / ABC setup has a tighter fit when the engine is cold than at full running temperature so needs to be brought upto working temperature quite quickly . Don't lean the engine out completely , a few clicks on the rich side will do . If possible , run the engine fo a few minutes at a time allowing it to cool between runs, gradually increasing the run time. If you have it on a prop in a test stand , run it on full throttle . A prop around an 11 x 7 or a 12 x 6 should be suitable . Don't waste too much fuel on a test stand , two to three tank fulls will be enough .

At the end of the day , it gets dark .

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05-03-2005 09:02 PM  13 years agoPost 42
Hendrix

rrNovice

Piraeus Greece

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Got it.
Thank you for the information.
Chris

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05-04-2005 12:11 AM  13 years agoPost 43
Geo

rrApprentice

Australia

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Hendrix
About my made up start shaft

Yes thats the idea I made it very hard at the same time I put, another one in the vice and hammered it,,,, it bent, slightly before breaking so its not quite glass hard
I use to listen to your music in the 60's
Im glad you came over to our hobby from all that hard rock
Much more relaxing

Geo

Self confessed Inverted Auto failure

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05-04-2005 04:35 PM  13 years agoPost 44
Hendrix

rrNovice

Piraeus Greece

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Im glad you came over to our hobby from all that hard rock
It happened that i like his guitar sound so i am listening to his song even today regularly. I dont know why but his voice and sound always sound familiar to me.
I am getting old now but i still rock and roll
(How you say it? "I still kick a***s" from time to time.)
Hey just joking.

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05-04-2005 11:11 PM  13 years agoPost 45
Geo

rrApprentice

Australia

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Jimmy
Looks like you've got a lot on your plate with water cooling a West 50
And a Webra 55
Just Engines has a chrome bore 56 out for 56 Pounds
I dont know what its like
But the guy is heavily into engines so it cant be that bad
Geo

Self confessed Inverted Auto failure

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05-04-2005 11:17 PM  13 years agoPost 46
sharam

rrElite Veteran

Northern California - Fly at Morgan Hill Field

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Well, I yanked out my OS 50 SXH (now available for sale if you are interested) and installed the Webra 55.

Started in up in my backyard and brought it to a low hover - sure seems powerful but I really have to fly it around to be able to tell.

This weekend I will do some serious flying with it at at the field and post my conclusions.

BTW, I got my Webra 55 from Cyberheli. Stephen, as usuall, excellent service, thanks much.

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05-05-2005 02:59 PM  13 years agoPost 47
Rick

rrApprentice

ny, ny

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Can anyone that installed this engine in a Raptor 50 please post any changes needed to fit it and post pictures? Thx.

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05-05-2005 06:39 PM  13 years agoPost 48
Hendrix

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Piraeus Greece

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Just Engines has a chrome bore 56 out for 56 Pounds
Any link please?
Is this bore intented for the webra 55?
I will do a search for Just engines but if you have the link available...
Thanks for the information Geo.
About the W55 installation on the Raptor 50, i agree that a picture should help a lot as i am afraid that i will do something stupid if i find a problem.
(I will make it probably but a picture speaks a thousand words)
BTW, I got my Webra 55 from Cyberheli. Stephen, as usuall, excellent service, thanks much.
Thats where i also bought mine. It is not here yet but i hope this week will arrive.
Chris

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05-05-2005 10:33 PM  13 years agoPost 49
Geo

rrApprentice

Australia

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Chris
No I meant that the whole engine is 56 Pounds
Not bad price
Just do a search for,,,,, Just Engines
May be good I dont know
Ive used Webras and they are OK I suppose
Ive used Just engine chrome ABC replacement piston and cyl and found them good in my 46
Good luck with your setup
Geo

Self confessed Inverted Auto failure

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05-05-2005 11:38 PM  13 years agoPost 50
Hendrix

rrNovice

Piraeus Greece

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Just do a search for,,,,, Just Engines
I found it, looks interesting.
I will browse it for a while and have a look there.
Chris

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05-06-2005 01:43 AM  13 years agoPost 51
Geo

rrApprentice

Australia

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Jimmy
Keep us posted if you go the water cool route
Ive got a modified 46FX and 540 hatori 5% nitro But the carb is good , moded and the power is fair
Good Flying

Self confessed Inverted Auto failure

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05-06-2005 03:21 PM  13 years agoPost 52
Hendrix

rrNovice

Piraeus Greece

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I will.
I just got the motor.
WOW!
I have never seen a motor like that.
Here is a photo:
http://209.59.150.58//album_pic.php?pic_id=2706
Been used to electric motors this looks nice!
The TT50H pro looks like a toy compared to this motor.
Also i have never ever seen such a huge carburator.
The head is painted black and the body looks like cast aluminium
but it feels very rough like it has treated with sandblasting.
I guess it must loose heat very easily due to the roughness
The Raptor fan screws in very well, precisely and secure.
It looks like despite the big appearance it will fit inside the Raptor 50 V2
but i dont know if the height is right. Looks like it is the correct height though.
I want to do the preliminary work on it before i install it on the heli.
Now i have to find a 6-32 tap in order to fit the Perry pump.
This is not an easy task here in Greece as we use metric screws.
I will go out shopping tommorow.
Chris

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05-06-2005 05:08 PM  13 years agoPost 53
Rick

rrApprentice

ny, ny

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Will the same mufflers that fit on an OS 50 SX-h fit unmodified on the Webra 55?

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05-06-2005 06:18 PM  13 years agoPost 54
nivlek

rrProfessor

Norfolk England

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I received my new Webra 75 P5 yesterday . Comparing it to my O.S. 70 , the externals of the case do look a little rough but it's the inside where all the action takes place . It also has a huge carb and the head is much larger than the O.S. 70 head . I was quite pleased that the exhaust bolt spacing is the same as the O.S. 70 .

At the end of the day , it gets dark .

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05-06-2005 06:48 PM  13 years agoPost 55
sharam

rrElite Veteran

Northern California - Fly at Morgan Hill Field

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Rick,

The MPII hole pattern does not fit the Webra 55. You will have to use a drill on the muffler to elongate the holes a bit. Do a trial fit and you will see.

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05-06-2005 08:38 PM  13 years agoPost 56
Hendrix

rrNovice

Piraeus Greece

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the case do look a little rough but it's the inside
I agree but i dont think that this is a problem or cheap work.
I remember sand blasting my motorcycle engine in order to get this roughness.
It worked very well in cooling the motor as it increases the available radiating surface.
Geo I ordered the water cooler and tommorow i will go out to find some copper tubing to wound around the head.
I will post here when i start assembling things.
Right now i have to find a suitable place to mount the cooler so it can
benefit from the main rotor downwash if possible.
I am a little concerned that the engine will not be able to reach the working temperature fast but i might be wrong as the 0% nitro fuel should make the engine get hot enough.
Chris

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05-06-2005 08:59 PM  13 years agoPost 57
FLYINFOOL

rrKey Veteran

Cudahy, WI

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So then, what is the recomended muffler for the Webra 55?


Jeff Borowski
RAMS Club President
www.ramsrcclub.com

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05-06-2005 09:09 PM  13 years agoPost 58
Hendrix

rrNovice

Piraeus Greece

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I dont know about the recommended exaust for the W55
but cyberheli suggested to me and i accepted, the funtech 50 muffler.
It looks very nice.
Please note that i requested the quitest muffler arround and not the most powerfull.
One more thing. They suggested to me at first the MPII V2 quite for power output.
Chris

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05-06-2005 09:28 PM  13 years agoPost 59
nivlek

rrProfessor

Norfolk England

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I wasn't trying to imply that the external apearance made me think that the engine was poorly made , just that they had focused their attention in the right places . Quite possibly the exterior roughness does improve the cooling . I still have one Webra 61 Speed F Champion aero engines from the early eighties and it still performs well when used .
Don't worry unduly about the engine reaching optimum temperature too quickly , just don't let it run slobberingly rich or "four stroking" for too long when you first fire it up .

At the end of the day , it gets dark .

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05-06-2005 10:06 PM  13 years agoPost 60
Hendrix

rrNovice

Piraeus Greece

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I wasn't trying to imply that the external apearance made me think that the engine was poorly made
No problem, i understood what you were saying in the first place.
I just tried to explain (in my mind) why they left the exterior surface rough.
As this is my third engine and the first from Webra i was also used to the TT
engines appearance.
I will proceed making the liquid cooling modification and see how it
will come out.
If i succeed making the engine work well with 0% nitro i will get the money back from the fuel.
The difference for me is huge.
30 euros for ~4 litres of 15% compared to 12 euros for 5 litres of straight fuel.
30 Euros = ~40 dollars.
Chris

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HomeAircraftHelicopterEngines Plugs Mufflers Fuel › new webra 55
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