RTK

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The BME 115 is now being manufactured and is starting to ship. Keith has confirmed my order, so I should have mine in a week or so. I do not have any pictures yet, but the link provided will tell the story (better than I can) and show a few pictures.



Here is some commentary from Kris on this engine.

It sports a HUGE reed block, and much larger carburetor, less complicated rear mounting flange, the new BME 12-bolt "Universal" prop hub (both large and small 6 bolt patterns for DA and 3W), with 10mm center pilot and an 8mmx1.25 thread retaining stud for the propeller.

Ignition is still the proven Falkon, with a custom advance curve dialed into the unit, and using the more durable Falkon pickup assembly in lieu of the old style Hall effect transistor and wires.

Weight is actually 2 ounces LIGHTER than a 110, and RPM increase is reputed in the 250-300 rpm range.

Several design notes. The casing is now a one-piece item, with a rear cover/mounting plate and front crankshaft/casing piece. This allows for less wieght, greater structural rigidity, less leak-prone seams between casing halves, and simpler assembly. Close examination of the output shaft housing shows that the casing does not come straight down from the sides, then blend forward into the housing, but actually is undercut toward the inside of the engine, and begins INSIDE the main casing. A definite weight saver, and probably stronger than the usual design.

One striking design feature that comes to mind .. the crankcase works in either direction, and is symmetrical. Hmmmmmm. . .wonder how hard it would be to bolt a spacer plate between TWO 115's, to make a 4-banger. . . . . .

RTK

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Here are some pic's I borrowed

Tired Old Man

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You know I was waiting for you to make this post and have been wondering what was taking you so long.

RTK

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I just got back Pat, now I am going to plagiarizer what someone else has said about this engine Well maybe I will ask if it is OK first.

wingburner

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Do you know what he settled on for pricing....When I talked to him in April he was hoping he could price it at $1000.00.

RTK

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I do not know the price as of yet. I guess I will find out when I get the invoice. But the price you stated sounds about right.

Tired Old Man

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Unless something changed it was supposed to be $995.00 plus extra for mufflers. But that was back in June when he told me that.

Let's see how this one stacks up against the other 100cc engines. 1 piece case instead of 2. A pound or more lighter than the lightest. More displacment. Choice of single bolt hub or multiple bolt. Falkon ignition standard, with the opportunity to have it with CH for a few more $$. Bottom mounted carb instead of rear mounted, saving cutting up the firewall. Less cost.

Evolution, eat your heart out

PlaneKrazee

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I'm glad to see the engines beginning to move and look forward to hear when the 55 will be coming out.

hobdean

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I got burned by BME and will not buy another product by BME!

RTK

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I knew that one was coming from hobby

fishgod

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Bravo for BME getting another engine out for the public. But why continue to anger customers that have been waiting for the 55 for years when the 110 by all reports is the top dog in the 100cc market? BME has recieved alot a negative press for the 55cc folly. Is he correcting design flaws in the 110? Just seem strange to put out a simular product to the 110 when the crowd that is using 50cc engines has exploded in numbers and would snap up more 55cc motors then he could produce. I would guess that the 55cc sales would be 2 or 3 times higher in number of units sold then the 115cc.

I don't have a dog in this fight, just an observation.

RTK

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The 115 "I feel" was just a progression/refinement of the 110. (a good one too) You do not have to use a fully supported mounting ring, which most people complained about. The case is no longer split which makes it better than the old case style that many others manufacturers use and it has a larger carb which will let it run even better thru out the whole RPM range.

As for the 55, it should be here soon if I had to guess.
When you are depending on other suppliers to deliver the correct parts on time you can run into a few snags now and then.

AJT

I just checked the BME web site and found no listing for the 115. The 110 is still listed. Maybe he hasn't updated the website yet.

Tired Old Man

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Without any knowledge at all, I could easily see some parts from the 115 making it to the "55", should it be produced. With engines in that size currently running from the 50 to 62cc range, I could see the desire to delay for a couple of more cc's to make people "feel" like they had a bigger engine. Especially if the new cylinder was to breath a little better than the old one, or shed heat more efficiently than anybody elses. Then, if I was to be developing a new engine that could share some of the design specs with a smaller engine, why would I want to go with an old design?

If I was looking at a company that developed products from an engineering standpoint, I could see where they would not want to produce an engine that was pretty much the "same ol, same ol", but be a smidge lighter with a couple of more cc's. I would easily understand why they might want to come up with something entirely different to set them apart from the "masses" of the r/c engine manufacturers.

In the meantime I would not be the least bit surprised to see somthing in the 55 to 58cc size that came to market that had a one piece case, a lighter cylinder that shed heat more efficiently than those currently available, and was a lot lighter than all the rest. I really wouldn't. This is all just guesswork, but I do understand how engineers think.

Diablo-RCU

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It would be nice if they updated their webpage to include the 115 motor and new lower price (if true).

Tired Old Man

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I don't know for certain what the price is yet. Truthfully, neither RTK nor I remembered to ask. That happens sometime when you have a cc# on file with a company. I did exactly the same thing with Don's Hobby Shop the other day. I ordered a bunch of stuff and forgot to ask what the bill came to.

DENNIS C

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That happen's when you get old

RTK

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No kidding

Tired Old Man

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The other option is knowing that you can afford it anyway

RTK

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I just received my 115 today

Antique

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Are you going to "improve" your 110 now

DENNIS C

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That sounds like a loaded question for a " unarmed man "

RTK

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Soon

You can tell I am all grins today

Tired Old Man

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RTK,

Let me know when you intend to do the improvement. I have an engine that needs similar and more extensive "improvements" and shipping at the same time makes sense.

RVM

I wish I could afford the kind of set up that would make use of that engine!