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supercharger for RC nitro engines?

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Old 03-21-2005, 01:00 AM
  #1
jcrew3002
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Default supercharger for RC nitro engines?

i no there was a post about superchargers somewhere in this website b4 but its an old post an has been burried since. so my question is, is a supercharger worth it or not? and another wierd question, how enviormentaly safe are nitro engines? i know there not like cars that put out alot of harmful emmisions, but they do use nitro fuel so ive just ben wondering...
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Old 03-21-2005, 01:56 PM
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Default RE: supercharger for RC nitro engines?

that thread is only a search away, it probably is down to the second page, but it isn't very old. summary is they are a complete waste of time for 99% of all 2 strokes, they MIGHT add 3% power on a good day.

glow engines are really, really bad as far as environmental concerns, in fact our glow model engines are probably the worst IC engines in production. that said, they are so small and there are so few of them with very little runtime the total emissions from all model engines combined in a year is probably what a v-8 puts out in a couple hours of running.

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Old 03-21-2005, 07:01 PM
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Default RE: supercharger for RC nitro engines?

cool that a very little amount of emissions. but with such low emssions being let into the air in the cousre of one year, wouldnt the earth with its natural enviorment cleaning cycle netrualize the emmissions of a single running rc engine in a matter of hours anyway?
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Old 03-21-2005, 10:51 PM
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Default RE: supercharger for RC nitro engines?

The emissions given off by the nitro engines can be compared to peeing in the ocean.
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Old 03-23-2005, 02:36 PM
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Default RE: supercharger for RC nitro engines?

great now my car wont start at all! it was running fine a few days ago. it sat on the shelf for about 4 or 5 days since it ran, so i take it off the shelf, replace a broken upright with a new one, and bam! engine wont start[:@] , nitro engine cars are super fast, but they have an equaly bad downside: starting, starting them is hit or miss, one minute they run like perfect the next minute they have u pullin your hair out. little engines with PMS.

heres what i have so far:

ran the car for about 30min 1 1/2 tanks of gas:

car breaks a front upright:

sits on shelf for about 5 days (i didnt use after run oil or blead the engine of fuel):

upright bought, put on car, fill gas tank, pulls on pullstarter, no response:

took only the pullstart and heat sink head apart to get a visual on the piston movement and check for dirt (no dirt engine is fine glow plug is fine, air filter is great):

figure it may be a bad glow plug battery, replaced glow plug battery:

try to start it again no response + the clutch bell seems to be conected to nothing because it just freewheels! ( i didnt touch the clutchbell assymbly during the dissambly, how can it be acting up!:

fustrated, posting:

is it possible that fuel left in the gas tank and engine can get gunked up in the engine that quickly, or at a more deviant approach, is it possible that my local hobby shop for lack of a better word spiked the nitro fuel they sold me so it can gunk up my engine after a week or 2 and have me come crying back to them to fix my engine for $30 a pop[>:]
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Old 03-25-2005, 11:05 AM
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Default RE: supercharger for RC nitro engines?

Nitro fuel abosrbs moisture from the air like a sponge.

Drain the fuel.

Fill with fresh fuel. Remove glow plug and flush engine out with new fuel by cranking the engine until fresh fuel flows thorugh. Clean glow plug with fresh fuel.

Put plug back in, the back it out about 3/4 of a turn and fire up that puppy. Then wrench down the plug.
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Old 03-28-2005, 01:38 PM
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Default RE: supercharger for RC nitro engines?

i completely agree that yo should allwys make sure that there is no fuel what so ever in the engine when you store it. and i am a firm believer in after run oil, <USE IT>

Just a few minutes of time at the end of the day to klean and oil your engine can save alot of down time when you go to run it again.
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Old 12-11-2006, 08:37 PM
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Default RE: supercharger for RC nitro engines?

YES HOW FAST DOES A VX 18 ENGINE GO
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Old 12-11-2006, 09:16 PM
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Default RE: supercharger for RC nitro engines?

STOP TRYING TO HIJACK THREADS! MAKE YOUR OWN THREAD!
Quote:
ORIGINAL: bigtre

YES HOW FAST DOES A VX 18 ENGINE GO
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Old 12-13-2006, 05:54 AM
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Default RE: supercharger for RC nitro engines?

I can assure you that with experience running a nitro engine become pretty easy. The main thing to remember is that for an engine to run it needs 3 things. Fuel, air and an ignition source. If your engine will not run then it is most likely because one of these is missing. First things first, check your glo plug. Even if it glows bright that does not mean its ok. If in doubt then change it. This will be a good start.
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Old 12-13-2006, 08:54 AM
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Default RE: supercharger for RC nitro engines?

Plenty of threads on this topic. Basically it is a waste of money. Just get a "tuned pipe".
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Old 04-29-2007, 12:06 AM
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Default RE: supercharger for RC nitro engines?

My self and three other friends bought the Losi Aftershock. We all worked together tuning each truck. I myself decided to purchase the RB Supercharger. To my disappointment I did not notice any gain at least nothing to mention. The super charger installation was simple and could see no error on my part. To further my disappointment I purchased a NOS kit from RB that I also notice no improvement.

I have attempted to contact tec support several times with no reply. I am left with no options other than to return the product to Tower Hobbies. Products are only as good as customer service. I strongly suggest they re-evaluate thair marketing strategy.

As you can see I took great pride installing the system. http://www.masonic175.org/images/Potluck/losi/losi.htm


DO NOT BUY! - DO NOT BUY! - DO NOT BUY! - DO NOT BUY!
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Old 04-29-2007, 08:34 AM
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Default RE: supercharger for RC nitro engines?

thank you for the love of God...thank you....now spread the word
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Old 04-29-2007, 09:09 AM
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Default RE: supercharger for RC nitro engines?

needs compression too
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Old 04-30-2007, 04:13 PM
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Default RE: supercharger for RC nitro engines?

i got the supercharger as a birthday gift. as far as tech support goes i called up and was talking to the guy for bout 40 mins on modifications that had to be made to my car. as for a difference i notice something of a difference. i went to that web link u posted of ur car looks nice but if im not mistaked the tube u ran from the supercharger to the nitrous bullet, that port is to provide more pressure to the fuel tank for a steady flow of fuel. i could b wrong but just throwing in my 2 cents.
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Old 09-23-2007, 06:06 AM
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Default RE: supercharger for RC nitro engines?

Those RB Innovation superchargers are not worth the money. In order to even get any kind of good results from a supercharger in a 2-stroke engine you would need to have reed valves and exhaust window controller.

A fourstroke will benefit from the boost unit without such complicated things (well in this scale anyway).

I also wanted to have a supercharged RC car. And the only factory-made supercharged fourstroke engine comes from O.S. So I built one of those engines to fit my 1/8 Hobao truggy.

Heres a link to a video of my car:

http://video.google.com/videoplay?do...68489710969309

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Old 09-23-2007, 09:43 AM
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Default RE: supercharger for RC nitro engines?

That is a nice vehicle. Which OS supercharger did you install onto your FS engine?

And yse, I agree with you 100%: RB Innovations is nothing but snake oil. Even if you put an RB Innovations supercharger on the 4-stoke engine, it will not see a power increase since the RB Innovations charger cannot even create any boost. It is not of a proper supercharger design (roots/whipple/lysolm/centrifugal etc.).
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Old 09-23-2007, 11:16 AM
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Default RE: supercharger for RC nitro engines?

That engine is originally equipped with a supercharger so I didnt install anything. That is a stock unit with the blower
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Old 09-23-2007, 06:35 PM
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Default RE: supercharger for RC nitro engines?

Ahh! Nice! the FS I saw on the net was the wrong one then. It didt have the supercharger on it.
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Old 09-24-2007, 02:29 AM
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Default RE: supercharger for RC nitro engines?

This is the one that I have:

http://home.wanadoo.nl/chretiendoll/osmaxfs120.htm

http://www.rcuniverse.com/product_gu...?engine_id=105

They dont manufacture these anymore.

Here's another video with more speed. A soccer field abuse
http://www.youtube.com/watch?v=IFTvObTPaQI
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Old 09-24-2007, 03:47 AM
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Default RE: supercharger for RC nitro engines?

at last someone brought a supercharger and found it didnt work.maybe this should be made a sticky so some of u guys dont have to write a page every week explaining how they cant work. cause it seems to come up every week or 2 cheers
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Old 09-24-2007, 04:08 AM
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Default RE: supercharger for RC nitro engines?

Care to specify your post a bit Ozzie?

Superchargers USUALLY do not work well at all with 2-stroke engines. Reason for that is that side (and intake) ports are open at the same time with exhaust ports and therefore the targeted boost blows to the exhaust chamber.

Naturally there are exceptions to this but as said before, the standard induction type engines (that rc 2T engines are) are not originally designed to uphold boost. They would require a completely different port location setup in the cylinder walls. Other opportunity is to have a controlling unit for back pressure.

So in the end you CAN supercharge or turbocharge a 2T, but dont expect the results to be astonishing since likely you will gain nothing but increased cost and a wow-factor. For the first minute

Fourstrokes are a completely different ballgame then. They have opening and closing valves. When you compare for instance my supercharged engine to the same engine without a blower you can find the difference in outputs to be about 40% in favour of the supercharged one.
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Old 09-24-2007, 04:27 AM
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Default RE: supercharger for RC nitro engines?

If you really would like to increase the output of a 2T then look closely to the 2T dirtbike engines starting from the early 1990s. Study the exhaust port controlling unit and the efficient port areas in percentages and compare closed/open situations. Those systems can be adapted to rc world and they can operate solely on spring rate and exhaust pressure.

This yields the possibility to use bigger exhaust which results in higher horsepower output. And with the exhaust port controller closed in idle and lower rpm you will gain more torque to the bottom end.
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Old 09-24-2007, 06:06 AM
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Default RE: supercharger for RC nitro engines?

was just trying to say that super charges for rc engines comes up every couple of weeks and people have been writeing long explanations why they give little or any gains.it was good to see someone who actully brought one and tryed it and it did not work as was expected.that is not to say they do not work on other 2 stroke motors . but the normal engines used in rc cars do not work with super chargeing.note i said normal as yes with modifiaction u could probably get a abc type engine to see some sort of gain.but as for people just bolting one on and expecting big horse power gains i say save ure money .just my 2 cents
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Old 09-24-2007, 06:11 AM
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Default RE: supercharger for RC nitro engines?

Couldn't agree more to that.
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