Hobbsy

My Feedback: (102)

Scots. I have flown the BTE Flyin King with a Saito .80, perfect engine for it, that's what Bruce has on his own, the Davis SoundMaster will make it so the prop is the loudest sound. I have flown the big TeleMaster with a Fox .74 and an Irvine Q .72 both were more than adequate. I keep looking at the new big TeleMaster but it is corrupted, I mean slanted toward electric use and I fear would not convert well to glow.

Scotsman58

My Feedback: (1)

Thanks for the reply, Torque. The Saito .80 is a nice engine -- but I'm intrigued by the possiblity of a small gasser that will leave a lot less mess to clean up. But most of the small gassers I have heard have been LOUD. If the BME 90 can be quieted down, it should have at least the power of the Saito .80.

mrbigg

My Feedback: (21)

most stock ST mufflers are quiet to begin with. I don't think you'll mind the noise.

mstroh3961

My Feedback: (4)

I will gladly trade quiet for more power!

3DDino

me too

trailertrailer

My Feedback: (19)

Can anybody tell me how this thing will 3-d a harrier 90 size plane I don't want to be dissapointed.

snapstik

yes thats also mine qeustion
I have an extra 330 s 3D plaine .90 size
can you flyi 3D with this .90 gas engine
is it powerfull for running a 15x4W

Birddog-RCU

My Feedback: (62)

I would think it will work for a .60 size plane but .90 would be pushing it for 3D. Someone will have to try it to be sure.

ben beyer

My Feedback: (23)

Does anyone know if they'll run with high octane gas, or do they prefer low octane like the other BME's?

ben beyer

My Feedback: (23)

How is the throttle response with this engine? I'm thinking about putting one in a Fliton Extra 330 Freestyle.

trailertrailer

My Feedback: (19)

Mounted this to my Harrier 90 would not even get off the ground unless leaned further than I would like on a new engine
not enought power a/c is 8 1/2 pbs am going to see if I can send back.

NM2K

My Feedback: (14)

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Peak it out. That is where gas engines run. Running gasoline engines rich, even when new, is wrong and only builds up carbon. Gasoline does not cool the engine as extra methanol does.

If you have to err, err 200 rpm rich of peak. At least you'll not be too lean, although that does not carry the same connotation as it does with glow because, unlike methanol, gasoline does offer some lubricity.

If you're not peaking the engine out, you have no reasonable basis upon which to judge the engine.

edgeman55

My Feedback: (25)

8 1/2 lbs and it won't get off the ground?? I have my ST 90 gas conversion in a 10 lb 60 size P-47 and it flys it well above scale speeds.Mine turns a APC 14X6 prop at 11,000 rpm.Mind you I am at 5000 ft elevation so I know this would have more performance at sea level.I am getting a 8 to 900 rpm idle with great transistion using a JTec side draft muffler.She burns 4-5 ozs gas in a 15 minute flight.I do not think this would be a great 3D engine but for 60 size scale planes it is awsome.

trailertrailer

My Feedback: (19)

Not looking to argue with you two r/c experts just giving my experience since there was no actual flight reviews her.
I am glad you guys are having good experiences not a bad engine just not right for my Harrier.
Keith is a stand-up guy not a bad product like I said just not right for my application.

NM2K

My Feedback: (14)

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I just can't see bashing a new product when the user doing the bashing admits that he doesn't know what he is doing and confesses that the engine is being ran improperly (too rich).

If the correct prop is turning within the required rpm range and the total weight of the airframe/engine/fuel load are satisfactory, it does not matter what type of engine is providing the motive force.

How are you going to "send back" a used product for a refund? Most times, if you use it, you own it. That is how it would be were I the retailer that sold it to you. Other folks do not want to buy as new your used equipment. Equipment that may have been damaged by someone without any experience in running that type of engine.

If other engines swing your prop at sufficient rpm to fly your model, it should have been easy enough to compare your engine (and promises made by the producer) in order to tell ahead of time if your engine was qualified to do the job. If the specs promised were within the usable range, I would give Keith a chance to help you get your engine running as it should, before bad mouthing it on the forum.

Gasoline does not provide the same amount of performance as alcohol based fuel for a given displacement. I'm not familiar with your airplane, but right off the bat, if the model flies adequately with a glow .90 engine, there is no way in hell that a .90 engine, even the same engine (G90), fueled by gasoline is going to provide the same amount of power. I have said this repeatedly in these forums, yet the question always appears. I would expect the BME .90 to provide power that is more inline with a .60 displacement glow engine. If a .60 displacement two-stroke glow engine won't fly/hover/3D the model, you can rest assured that a .90 gas engine will not.

ben beyer

My Feedback: (23)

What gas does it say to run in the engine? I'm currently using 91 octane in my 3W and I'd like to take fuel from the same tank.

edgeman55

My Feedback: (25)

Does not say what type fuel only that it should have a 50/1 mixture.I am running mid grade 89 pump octane with Lawn Boy ashless at 50/1.Will switch to synthetic after a gallon which at 5 ozs a flight will take a while.This little sucker runs like a switch watch.

Birddog-RCU

My Feedback: (62)

I may be interested in buying that engine from you if you want to sell it. I need another one for a twin configuration.

retnavycdr

My Feedback: (190)

Alan: OK Make me an offer?

NM2K

My Feedback: (14)

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I'll offer a nickel 95.

romanrc

Anybody used it in a OMP Katana 70 V2 or Mojo 60?

drbyrnes

Nice to listen to you guys. I'm thinking of putting the ST 90 gasser in a Senior Telemaster as well. It'll be my first gas engine; easy to get to adjustments because there is no cowl; may use it to tow gliders later;want to teach my grandson how to fly on a big trainer; Keith has been real helpful answering some of my neophyte's questions; But anyway, what's the consensus from everyone: Is the BME ST 90 Gas Conversion something you guys would buy or not??? Thanks.

drbyrnes

Hi, Artisan.

Is it your opinion then that the glow Super Tigre 90 would develop more power than the BME ST gas conversion? Regardless, do you think the gas version is enough to fly the Senior Telemaster (about 10 pounds, 8 ft. flat bottemed wing) and maybe doing some glider towing??

drbyrnes

Also, one of you guys mentioned setting up the electronic ignition system. Being new to gas engines I am wondering if the BME ST 90 really needs the addtional ignition system. Can't you just mount it, add a kill switch, and run it? Thanks.

cadconversions

My Feedback: (21)

All BME st90 gas engines will have an electronic ignition system. It's a good idea to have a method to kill the motor besides turning the ignition switch off.