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The new BME 150LT in a 35% plane? You betcha!

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Old 03-29-2009, 07:37 PM
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marzo91
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Default The new BME 150LT in a 35% plane? You betcha!

I started this post on the other major RC website. I'll start it here too because it's interesting and fun. Let's have some fun!

While I won't be the first person to grossly over-power a plane, I might be the first to put the new BME 150LT in a 35% plane. The 150 will replace my nearly new DA 100 in my WildHAre 35% Extra. The Extra is an awesome plane with the DA 100 in it. It weighs in at 28 pounds even. After the engine swap, the weight will be nearly the same as the BME 150LT is a within a few ounces of the DA 100. I thought this combo would be a no-brainer. IMO, the 35%WildHare Extra is the perfect plane for this engine swap. At 28 pounds, the weight is good for the 100, and should be unreal with the 150. This plane is BIG and long. The beefy engine mount of the Extra will handle the 150 with ease. The plane and landing gear is plenty tall enough to handle a larger prop. Tom at BME said the BME 150 will run great on the big bladed 30" props like the Mejelik and MSC. So, call me a fool, or say what the hey, lets see how it does.

Are you interested?
Old 03-29-2009, 07:41 PM
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marzo91
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Default RE: The new BME 150LT in a 35% plane? You betcha!

I will compare the BME 150LT to the DA 100 just for comparison's sake; to get a feel for the size difference for the swap.

The weight of each engine is similar. The entire setup for the BME 150 came in at 7 pounds, 8 ounces. That's the engine, mufflers, ignition, plugs, and bolts.

The weight of the DA 100 setup is 7 pounds even. That's an only an 8 ounce difference.

The overall measurements are similar. The mounting pattern of the BME is about 1/4" wider. Both engines are a bit over 6.5" hub to backplate. The BME is about a half inch narrower than the DA 100. Mufflers from both are about the same size. The exhaust opening of the 150 muffs is much larger than the 100, as it should be. Looking at the pictures in the next post, you'd think the BME is larger, but it's not. It just "fills up the area" of the overall dimensions more.


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Old 03-29-2009, 09:21 PM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

I'm interested! Should be fun!
Old 03-29-2009, 09:22 PM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

I am a little surprised with the weight of the BME 150. The BME website gives a weight of 5.58 pounds for the engine. I am going to assume the mufflers are 10-12 ounces and the ignition is about 6-7 ounces, which means the engine must weight close to 6.5 pounds and not the 5.58 pounds shown at their website.

BTW, this should be very interesting. It would be nice if someone developed a 31-32 pound ARF for this engine with wing area of about 2300-2400 sq inches
Old 03-29-2009, 09:34 PM
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Default RE: The new BME 150LT in a 35% plane? You betcha!


ORIGINAL: rcairflr

I am a little surprised with the weight of the BME 150. The BME website gives a weight of 5.58 pounds for the engine. I am going to assume the mufflers are 10-12 ounces and the ignition is about 6-7 ounces, which means the engine must weight close to 6.5 pounds and not the 5.58 pounds shown at their website.

BTW, this should be very interesting. It would be nice if someone developed a 31-32 pound ARF for this engine with wing area of about 2300-2400 sq inches

Almost every single engine manf weighs the motor with "Nothing" attached...at least BME throws in the prop bolts and prop washer. But i can't think of another engine Manf that adds in mufflers , ign and so forth. Either way...the BME 150 will come in a good 2 - 2.5lbs lighter than any other 150 on the market...and that a lot of weight when it's strapped to front of an airplane. It also takes up the same amount of room as a DA-100. It also weighs less than a 3W-106 , or new 110 as well.....with way more power.
Old 03-29-2009, 10:49 PM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

ORIGINAL: rcairflr

I am a little surprised with the weight of the BME 150. The BME website gives a weight of 5.58 pounds for the engine. I am going to assume the mufflers are 10-12 ounces and the ignition is about 6-7 ounces, which means the engine must weight close to 6.5 pounds and not the 5.58 pounds shown at their website.

BTW, this should be very interesting. It would be nice if someone developed a 31-32 pound ARF for this engine with wing area of about 2300-2400 sq inches
I'm not sure of the weight of the totally bare engine. I think your estimates on the muffs and ignition are pretty close.

I do know that my RTF 35% WildHare Extra with the BME 150LT is 27 pounds, 5 ounces.
Old 03-29-2009, 10:52 PM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

That's pretty good! My WH Extra came in a few ounces heavier with a 100 in it. Can't wait to see some video!
Old 03-30-2009, 10:03 AM
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Default RE: The new BME 150LT in a 35% plane? You betcha!


It is quite likely that existing designs in the 40% area might have issues balancing with an engine that is two pounds lighter in the nose area.

I couldn't help but notice the comparison is done with the old DA-100. The DA-100L Brings the overall weight down by some 6.6 oz.. Nevertheless, the dimension and weight of this BME are impressive...


ORIGINAL: rcairflr

I am a little surprised with the weight of the BME 150. The BME website gives a weight of 5.58 pounds for the engine. I am going to assume the mufflers are 10-12 ounces and the ignition is about 6-7 ounces, which means the engine must weight close to 6.5 pounds and not the 5.58 pounds shown at their website.

BTW, this should be very interesting. It would be nice if someone developed a 31-32 pound ARF for this engine with wing area of about 2300-2400 sq inches
Old 04-01-2009, 10:15 PM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

Cool
Old 04-02-2009, 08:36 AM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

What about ground clearance? Does the WH have enough room to swing the 32" prop, or will you need a much taller gear?
Old 04-02-2009, 09:55 AM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

For break-in I have a 30" Mejelik. There is 5.75" of ground clearance with the plane on all 3 wheels. So, I guess it would be 4.75" with a 32" prop. Should be enough for me.
Old 04-02-2009, 10:01 AM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

Marzo....when do you plan on doing the maiden? Over on the other site , a guy that tests BME's mentioned that he thought the Mej 28.5 X 12 3 Blade was to much load for the motor , a 32" 2 blade might well be to much as well. Over on the Mejzlik website they list a 27"X 12 TH 3 blade that think would work great though. And for the 2 blades he mentioned just sticking with a 30". I'm curious to see how your 35% bird will slow down for landings and so forth. can't wait for a report from ya!
Old 04-02-2009, 11:01 AM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

Maiden might be tonight. I have the 30" Mejelik on it now. I'll keep the news posted.
Old 04-02-2009, 07:24 PM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

AWESOME!! good luck on the maiden man! can't wait to hear about how the BME was pulling your airplane around like a piece of paper! HAHA!!
Old 04-02-2009, 10:01 PM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

I took the BME to the field today. The engine started right up as soon as the fuel hit the carb. It needed to be leaned a couple screwdrivers widths so it didn't stumble. I didn't optimize needle settings yet. I only had an hour, so all I did is run it for 5 minutes and get in two quick flights. I didn't really get on it too hard at all. As we all know the power will be/is unreal in this plane. Point the plane skyward and 1/3rd throttle will pull it like my DA 100 did WOT. Go to half then full-throttle and it looks like a rocket. The plane turns into a tiny speck in about 3 seconds.

The plane flies, handles, and lands just like it did before, except for what "seems" like twice the power. This engine/plane has no nitrous, but it sure looks like it does.
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Old 04-03-2009, 12:35 AM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

That is simply friggin' awesome! Gives more and more hope for my next build. I always wanted a pathetically over powered airplane HAHA!!
Old 04-04-2009, 10:21 AM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

What are the two wingtubes in the fuse all about?

Old 04-04-2009, 10:27 AM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

Some of the WildHare planes come with 2 wingtube locations. A nice feature to help balance the plane. Big single engines use the back position. Twins can use the front. Pretty neat,huh?
Old 04-04-2009, 11:01 AM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

Any RPM numbers with the 30x10??
Old 04-04-2009, 11:24 AM
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Default RE: The new BME 150LT in a 35% plane? You betcha!


ORIGINAL: 3D Joy

Any RPM numbers with the 30x10??
Not yet. At this point, I just want to get some time on the engine. Within a couple weeks, I'll put the tach to it.
Old 04-04-2009, 11:27 AM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

When i designed the plane using the BME-115 was an option, also a DA-85 or ZDZ-80. It can be a problem trying to balance a plane with these super lightweight engines, so I added a second wing location.

TF
Old 05-27-2009, 01:20 PM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

Hi Marzo91,

Any update on BME 150LT? Any reliabilityissue?I am considering it for my Composite ARF Corsair.

Thanks.

Onewing
Old 05-27-2009, 04:31 PM
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Default RE: The new BME 150LT in a 35% plane? You betcha!


ORIGINAL: onewing

Hi Marzo91,

Any update on BME 150LT? Any reliabilityissue?I am considering it for my Composite ARF Corsair.

Thanks.

Onewing
I had a chance to put a gallon through the 150 the other day. The more I run it, the better it gets.

I've been flying the new 58 Extreme quite a bit too. Both engines are excellent.

Old 11-22-2009, 10:00 AM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

ORIGINAL: marzo91

I started this post on the other major RC website. I'll start it here too because it's interesting and fun. Let's have some fun!

While I won't be the first person to grossly over-power a plane, I might be the first to put the new BME 150LT in a 35% plane. The 150 will replace my nearly new DA 100 in my WildHAre 35% Extra. The Extra is an awesome plane with the DA 100 in it. It weighs in at 28 pounds even. After the engine swap, the weight will be nearly the same as the BME 150LT is a within a few ounces of the DA 100. I thought this combo would be a no-brainer. IMO, the 35%WildHare Extra is the perfect plane for this engine swap. At 28 pounds, the weight is good for the 100, and should be unreal with the 150. This plane is BIG and long. The beefy engine mount of the Extra will handle the 150 with ease. The plane and landing gear is plenty tall enough to handle a larger prop. Tom at BME said the BME 150 will run great on the big bladed 30'' props like the Mejelik and MSC. So, call me a fool, or say what the hey, lets see how it does.

Are you interested?

I am very interested, I just ordered the 35% Russian Thunder scheme Yak 54 and I've got a 3W106CS but the idea of a 150 at almost the same weight is intriguing.
Old 11-22-2009, 10:43 AM
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Default RE: The new BME 150LT in a 35% plane? You betcha!

Regarding the earlier question about any reliability issues. BME engines have no reliability issues so you can put that concern to rest.


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