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HomeAircraftHelicopterGasser Model RC HelicoptersOther › New Generation Gassers
02-08-2006 01:06 PM  12 years agoPost 101
avator

rrVeteran

New Jersey

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Warren,

After reading this post I'm not really sure how much power or lack thereof this motor has. I've seen it compared to the power of both a .70 and a .90. Since you've flown it, do you think that a guy who is looking for extreme 3D power in a .90 size heli would be satisfied with the power of this motor?
Now I'm pretty sure that a glow engine converted to gas ignition will produce less power, so, I guess I'm interested in how much less. Will a .90 ship be enemic in the power department?

Also, do you know why they are not using an ignition system with variable timing, as this would not only be easier starting with a smoother idle, but it would also produce more power at the top end with the spark advanced? At least, this is the experience that I had with planks that had variable ignition systems. I always thought that fixed timing was a compromise.

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02-08-2006 04:47 PM  12 years agoPost 102
shihan

rrApprentice

Oneida, N.Y.

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top

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02-08-2006 05:00 PM  12 years agoPost 103
Tanager

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El Monte, California

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do you think that a guy who is looking for extreme 3D power in a .90 size heli would be satisfied with the power of this motor?
No, I think you should wait and se how the 2300 pans out for .90 glow powered equivalency.

I plan on putting the 2300 in an EVO 90 for testing. Should be the hottest gasser combo ever with a RTF weight at least 1.5 pounds less than anything else out there in the gasser world and equal power.

Yes fixed timing is a compromise, BME prefers it for the simplicity and reliability. I am not sure if you would realize much difference on smaller motors with variable timing anyhow.

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02-08-2006 08:52 PM  12 years agoPost 104
Gearhead

rrMaster

Vt

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I would still want a pull start, even if it's removable after the motor is started..

Jim

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02-09-2006 07:47 PM  12 years agoPost 105
Raptorgasser

rrNovice

Sweden , City . Vansbro

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Hi, the Wasp

Pull start like this?.

http://81.8.136.43/phpBB2/album_pic.php?pic_id=2621


/Bengt

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02-09-2006 08:00 PM  12 years agoPost 106
Gearhead

rrMaster

Vt

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that's a good idea, I was thinking about something like that,,, but how does it work, do you have a 1-way bearing on it some place or is the 1-way bearing on the heli ??

Jim

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02-09-2006 08:02 PM  12 years agoPost 107
FLYINFOOL

rrKey Veteran

Cudahy, WI

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RaptorGasser
I just found your other thread on your conversion.
Very nice job.


Jeff Borowski
RAMS Club President
www.ramsrcclub.com

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02-09-2006 08:22 PM  12 years agoPost 108
Raptorgasser

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Sweden , City . Vansbro

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Wasp

original 1-way bearing on the heli. It work good. Buth i dont have choke on engine so i have to pull at least 10-15 time to start engine.

/Bengt

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02-09-2006 08:30 PM  12 years agoPost 109
avator

rrVeteran

New Jersey

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Impressive

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02-09-2006 11:22 PM  12 years agoPost 110
Flying Tivo

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Monterrey,NL,Mexico

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Webra counterpart
It seams Webra has come up with a .91 conversion and has variable timing that could be controlled by a spare channel on the reciver.
Webra

They say it put out like 3hps, and they use a glow carburator.

What do you all think of this?

If life throws at you lemons......Squirt some lemon juice in the eye of your enemy!!!!

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02-09-2006 11:34 PM  12 years agoPost 111
Tanager

rrApprentice

El Monte, California

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Webra counterpart
I'm not too excited about the high oil content (20:1), or the price!

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02-10-2006 01:53 AM  12 years agoPost 112
damaen

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Umeå, Sweden

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Webra
Below $400 for a helicopter-specific gas engine isn't so bad?

Henrik

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02-10-2006 01:57 AM  12 years agoPost 113
Tanager

rrApprentice

El Monte, California

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I think it's $800 US dollars. That's what I was told?

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02-10-2006 05:18 AM  12 years agoPost 114
Gearhead

rrMaster

Vt

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I called Horizon today, the new Webra is not in the US yet, and they knew nothing of-it,,,

Warren,,, sorry for making you type some more, but without going back and reading every word can I ask,,, is this BME S-Tiger 90 gasser a bolt in fit for todays 90 size helis ??

Jim

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02-10-2006 05:25 AM  12 years agoPost 115
Tanager

rrApprentice

El Monte, California

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Warren,,, sorry for making you type some more, but without going back and reading every word can I ask,,, is this BME S-Tiger 90 gasser a bolt in fit for todays 90 size helis
No Jim, .60 sized case with minor modification due to some length adjustments and minor hole spacing issues.

Nothing real difficult to do.

The 2300 will be in a .90 sized case and have the same fitment needs,

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02-10-2006 05:26 AM  12 years agoPost 116
shuttlepilot

rrElite Veteran

Mullins, South Carolina

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Below $400 for a helicopter-specific gas engine isn't so bad?
I doubt that it would be $400 for the Webra 91 gasser since the nitro is $329.00. That would be a cheap retrofit!!

I'm waiting on the BME .51. BME called me today, they're super nice folks. It should be out around the end of March.

Gas is Great
Camper Fuel is Better!!
QWW Helis

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02-10-2006 09:47 AM  12 years agoPost 117
damaen

rrVeteran

Umeå, Sweden

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The methanol Webra 91-P5 with Ultramix carburator cost $250 at Cyberheli.

The $800 quote was a uneducated guess by someone.

Henrik

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02-10-2006 11:18 AM  12 years agoPost 118
avator

rrVeteran

New Jersey

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Warren,

I'm assuming the necessity of the high oil content in the Webra means it still has a bushed con rod. I fooled around with a couple of Super Tigre ignition conversions years ago. If I remember correctly, they were the 2500 and 3000cc engines. They had the original bushed conrod and had to run high oil content. It presented several problems back then, hard starting and fouled plugs. If the engine was inverted, it was very hard to start as the plug would foul with oil almost immediately. I had these motors in war birds and always inverted. Sometimes, the plug would foul during flight and shut down suddenly. That was always a thrill. I wouldn't want an ignition conversion without bearings on both ends of the connecting rod. Without them it's just not worth the hassle, especially in a helicopter. JMHO

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02-10-2006 11:23 AM  12 years agoPost 119
Ubie

rrApprentice

Cape Town, South Africa

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Copied from Webra's website regarding the conrod:

"the main change being a new steel connecting rod fitted with needle roller bearings for greater mechanical strength and lower friction losses."

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02-10-2006 01:53 PM  12 years agoPost 120
T.J.

rrVeteran

St. Louis

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I find this verey interesting. The budget master wont let me get a 90 mainly because of fuel cost. But If this engine proves to be reliable and economical a 90 size might be in my future.

So with the 90 size casing of the engine it should for the most part easily slide into any one of the 90 size helis? I figue the gear ratio would have to be changed. I guess I will wait for it to come out and see how you guys make them work.

I've been the ginipig once.raptor 60 V.01

NIM

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