BME Xtreme update
 

Dan, what edge are you building? I am starting to think about that myself.

Joe !~)

BME Xtreme update
 

It's the D&L Designs 80". I got the short kit and plans. I'm making a couple minor changes and running pull pull on both rudder and elevator. From the plans it looks like it can be built pretty light yet stay strong. I only have the elevator and rudder done and the garage doesn't have AC so building is a little slow right now.

Worth the Wait? - YOU BET!!
 

I have been doing some high altitude testing on a pre-production BME 110 (with std mufflers) here in the high desert of New Mexico. Our real altitude is 5300 feet but in the heat of the day our density altitude is just shy of 9000 feet.

The engine is simply amazing. On my digital scale it weighs 3.9 pounds with spark plugs and is quite a bit smaller than the BME 102 - except for the length and mounting plate which is the same as the BME 102 making it a bolt-in replacement. I dropped a full pound from my airframe by replacing the BME 102 that was previously installed.

I didn't cut this engine any slack by putting an MSC 27x10 prop on it and running it on AMSOIL 100:1 right out of the box. This prop is a lot more load than the same size Menz and also more load than a 28x10 Mejzlik - it really pulls hard.

The engine tached at 6400 RPM (cold) and 6100-6200 RPM (hot). For comparison, we put the same prop on a DA 100 that has over 100 flights on it and is one of the strongest at our field. The DA turned the prop at 6300 (cold) and a few hundred less RPM hot. We also put the prop on another DA 100 that had about 4 gallons of fuel through it and it would only turn 5700-5800 RPM suggesting that it still needs more break-in time before it develops the same amount of power as the new BME.

The idle is excellent and very reliable as is the midrange and transition. It is also the smoothest running (low vibration) BME that I have experienced to date.

Acceleration of both the engine and airframe (35% PMP Extra 260) is instantaneous. In fact, if you bury the airplane in multiple vertical snaps the acceleration is so quick that all you have to do is get it pointed vertical at the end of the snaps and it's hard to tell that it was buried because it is instantly tracking due to the very rapid acceleration. It is almost too much power for my 35% airplane (did I say that?).

None of this may sound unusual but one must remember that the engine is performing like this at almost 9000 feet density altitude!

Keith indicated that the engine is equipped with the first samples of cylinders from the foundry which do not have the correct angles on the ports and consequently don't make quite as much power as the production cylinders. Furthermore, the ports are timed for a tuned exhaust which means that there is additional power available should a tuned exhaust system be installed.

Is the BME 110 Xtreme worth the wait? -YOU BET. This engine is going to turn a lot of heads.

Len Alessi
Albuquerque, New Mexico

ON the way. . .
 

Had a long talk with Keith at BME last night. My engines have been shipped, WITH ignitions (so much for THAT rumor), and should be here Friday (With UPS, you never know. . . )

Test-run rpm #'s. . . .

Mejzlik 28-10. . 6800 cold and 6650-6700 HOT
Mejzlik 27-10. . 7000+ (silly rpm!!!)
Menz-s 28-10. . 6200-6300 HOT

This is using the STANDARD BME mufflers with less than 1 hour on the engine.

Gonna be a LONG weekend testing and running them in. . .

BME Xtreme update
 

I think I am # 300 or so on the list.

Brian

BME Xtreme update
 

I wish mine was going to be here Friday :(

BME Xtreme update
 

I'll be sure to give mine an extra hug or two for you guys. :)

As far as I can tell, the first 25 or so Xtremes are going to be VERY meticulously built and test run to make sure everything is in perfect running order, so production will be slow for a little while. Once Keith is comfortable with how things are going you can expect production to pick up speed.

BME Xtreme update
 

Anybody know what's happening with the 55cc Extreme? I haven't graduated to the big boys yet, but the 55cc might be nice for my laser.

BME Xtreme update
 

Last I heard the 55's would start going out after the first run of 110's.

It's HEEEEEeeeeeerrreeeee ! ! !
 

My Xtreme has arrived!!

view it here:

BME Xtreme

Thanks to all who are interested.

BME Xtreme update
 

...anymore word on delivery of the 110's?????

ARGGGGGGGGGGGGGGGGGG
 

How about that 55 for us little guys :)

WOW
 

No word on the New 55?

BME Xtreme update
 

I emailed Keith a couple of weeks ago and at that time he said they were testing some new cranks for the 55...I suspect it is going to be DEC or so before it is out.

RE: BME Xtreme update
 

Time for a further update on the BME "Xtreme" engines.

I have removed the 110 Xtreme from the plane I had it on, and am starting extensive bench tests for tuned exhausts. This will take about 2 months. in it's place is a '106" hybrid engine, using the 110 jugs/pistons and the 102 crankshaft assembly. Power is up about 300-400 rpm over the old 102, or equal to or slightly better than a DA100. So far, a 28-10 mejzlik is seeing 6500-6600 with 1 gallon through the new cylinders/pistons, and I expect 100+ more rpm after the engine gets broken in again.

This "hybrid" is the same as the "106' that Branwell mcClory and several others tested before BME finalized the new engines size at 110cc's. It's also the same engine that will be available as an "Upgrade" from BME for owners of the 102 "evo" series of engines. Those who have "105 evo" engines will be able to upgrade to full "XTREME" status with the installation of the Xtreme jugs and pistons.

Please contact BME for further information