RE: BME 115 Any Field Reports?

RE: BME 115 Any Field Reports?
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RE: BME 115 Any Field Reports? - 3/10/2007 4:08:57 AM

AmpAce

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From: Flyer's Paradise, USA
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Thanks Pontiac_40

Yes, I too have heard good things about the BME 115. The most important things for me, since I won't need nearly all of that awesome power, are that it: fit reasonably easily within the cowl and in front of the firewall; start easily; run smoothly; turn a 28" prop; and be reliable.

That shouldn't be too much to ask of an engine that has such a great reputation as BME, so now all I have to do is sell my beautiful, barely bench-run Roto 70 V2, and I will be ready to order one.

If you get one, be sure and let us know your impressions of it!

Ampace

quote:

ORIGINAL: Pontiac_40

AmpAce, the BME 115 is getting some good feedback from the pilots, ........so far so good. The engine is 1.6 pounds lighter than the DA-100 and from what the folks who own it are saying, the power is at least equal to if not more than the DA-100. The DA-100 is a great engine within itself.

(in reply to Pontiac_40)

Post #: 26

RE: BME 115 Any Field Reports? - 3/11/2007 1:48:35 AM

Tired Old Man

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Joined: 2/25/2002
From: Central, CA, USA
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Talking about having room? That's a 115 sitting in front of a 2.6m Comp Yak 55.

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< Message edited by Silversurfer -- 3/11/2007 1:50:11 AM >

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If you can''''t fix it with a hammer, you have an electrical problem.

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Post #: 27

RE: BME 115 Any Field Reports? - 3/11/2007 2:04:27 AM

RTK

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About time you get working on that

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Post #: 28

RE: BME 115 Any Field Reports? - 3/11/2007 5:02:50 AM

Tired Old Man

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Joined: 2/25/2002
From: Central, CA, USA
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Hey now, I got the tailwheel on too, does that count?

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If you can''''t fix it with a hammer, you have an electrical problem.

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Post #: 29

RE: BME 115 Any Field Reports? - 3/12/2007 3:59:49 PM

Pontiac_40

Posts: 117
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From: Fairfax, VA, USA
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AmpAce, just like Silversurfer, I'm thinking of using the BME 115 for my comp-arf yak. When I get my 115, I will give you my feedbak here.

SS: You finally got started!

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Fly and let fly

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Post #: 30

RE: BME 115 Any Field Reports? - 3/21/2007 9:14:33 PM

krayzc-RCU

Posts: 5963
Joined: 3/26/2002
From: Kannapolis, NC, USA
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what props are you all liking on this beast?

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smooth as silk!

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Post #: 31

RE: BME 115 Any Field Reports? - 3/21/2007 10:01:04 PM

Tired Old Man

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Anything OVER 27". A 28-10 Biela would just begin to put a little load on it. Mejzlik in 28" gets ripped, even worse in 27. 3W 27-10 is beyond loud due to the ripping. In 28" a wider blade wood or Biela. In 29-30" a composite prop is a good choice.

Seems the hole in the diaphragm cover does not like to see big pressure changes so a small cover that deflects the air away from the hole may be in order. Will have more on that this coming Sunday.

_____________________________

If you can''''t fix it with a hammer, you have an electrical problem.

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Post #: 32

RE: BME 115 Any Field Reports? - 3/21/2007 10:34:35 PM

flyinrazrback

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From: Shreveport, LA, USA
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My favorite prop is the Vess 28A. It was the prototype, and believe the production props are not too far behind. Another good choice is the PT 28x10. It pulls hard like a menz, but does not rip much at all, and very light.

quote:

ORIGINAL: krayzc-RCU

what props are you all liking on this beast?

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Post #: 33

RE: BME 115 Any Field Reports? - 3/22/2007 12:47:54 AM

RTK

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I like the menz-s 27x10 or the mejz 28x10. They will rip pretty easily, but most of the time there is no need to go over half throttle on a 24-27 lb plane with this engine anyway. Haven't tried much else on this plane.
My original baffling was working OK, then I decided to improve on it. That turned out to be a mistake, (made it run like sh$t) now I am starting fresh with no baffling and working from there. Sometimes it is best to leave well enough alone

I do not know if I have a diaphragm pressure problem or an air flow problem over the venturi. (I made too many changes at one time) Now I am proceeding one change at a time, guess I could always go back to my original design..................

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Post #: 34

RE: BME 115 Any Field Reports? - 3/22/2007 1:40:45 AM

krayzc-RCU

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wow this is one bad motor let me do some checking i may need to get me one Yeah baby!

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Post #: 35

RE: BME 115 Any Field Reports? - 3/22/2007 2:04:45 AM

Pontiac_40

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From: Fairfax, VA, USA
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When I was talking to Kieth of BME, he had also mentioned using a 30X10 prop after the motor is fully broken in. I don't have the engine as of yet but from what info I have gathered, it seems to me that using the 30x10 prop would be best if you are using tuned cans. Can't wait to get my hands on this baby!

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Post #: 36

RE: BME 115 Any Field Reports? - 3/22/2007 2:06:35 AM

AmpAce

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From: Flyer's Paradise, USA
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quote:

ORIGINAL: Silversurfer

Seems the hole in the diaphragm cover does not like to see big pressure changes so a small cover that deflects the air away from the hole may be in order. Will have more on that this coming Sunday.

I see that Chief Aircraft is selling a BME carb diaphram cover with a nipple soldered on over the hole so you can run a chunk of fuel tube from it, back into the cabin where there is stable air, Kinda spendy though, at about $25 IIRC.

Wow, I like what I'm hearing about the 115. Should tug my big Cub around plenty good at 1/4 throttle!

AmpAce

(in reply to Tired Old Man)

Post #: 37

RE: BME 115 Any Field Reports? - 3/22/2007 2:11:13 AM

krayzc-RCU

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i took a glob of soilder back in the day and did a lump onto that plate, i then drills a hole for fuel tank tubing. i then pushed it into that hole and ran a fuel tube off of that to the fuse. i am sure its not as pretty as what is being sold but it sure works

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smooth as silk!

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Post #: 38

RE: BME 115 Any Field Reports? - 3/22/2007 2:42:15 AM

Tired Old Man

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You may not even need to go that far. By this Sunday we'll have an "after action" report on how well a simple cover over the diaphragm hole works out. It has a hole on one side of it to permit balancing air but it won't be aimed into the intake air as the cover is now.

_____________________________

If you can''''t fix it with a hammer, you have an electrical problem.

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Post #: 39

RE: BME 115 Any Field Reports? - 3/22/2007 3:38:05 AM

flyinrazrback

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From: Shreveport, LA, USA
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After trying the stock cover, the aftermarket BME carb cover with nipple and line going to the fuse, 3W 90 degree intake, and the RC Blimp carb plate (new style that is perfectly square with nothing hanging below the carb like the other ones that stuck down a bit below the carb to block the choke butterfly), the RC Blimp carb plate fixed all my issues where the other items above tried did not fix my diaphragm problems, or only helped a bit.

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