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RE: Holy S**t - 3/10/2007 5:08:12 AM   
arlo1


 

Posts: 183
Joined: 1/29/2007
From: Nanaimo, BC, CANADA
Status: offline 		The very guy whos car has the link to see at the start of this very thread says it worked for him! You can have a milion people who dont know like you and it doesnt meen nothing thay might be more work and hard to tune but they do work. If I had the money I would do It my self But it is cheeper to buy 33% nitro instead. I dont need some guy who sits on the computer thinking he is learning something with out trying it to tell me it cant work to know if they can or not it can work. People who have done it say it does the theroy is simple the amount of work is too much for most people to get the bugs worked out because they dont have the patience, but the people who have had the patience have goten them to work.
quote:

ORIGINAL: ehroof

read the other 500, lol, bro i am done with this, it doesnt work on a nitro, i am sorry , it does work, it gives you a 3% gain in power, wow, definately worth the $150+. LOL. Much better than a tuned pipe or higher nitro fuel. I did the research the end of last summer, i was going to put one on my hpi rs4, i started to do the research, not just on this forum but on the rest of the internet, for every person who had said something good, about 1,000 said something bad, not to mention the guys at my lhs. buy it, put it on your car and you can race your snowmobiles and 440. i see you said you used one and it works, you used it on your nitro? you have pictures?? if not, how can you say it works, if you read 98% of the information on them, you will read they dont work.



< Message edited by arlo1 -- 3/11/2007 6:52:03 PM >

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RE: Holy S**t - 3/10/2007 5:10:45 AM   
HimotoRacingUSA



Posts: 13167
Joined: 2/27/2006
From: howard beach, NY, USA
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quote:

ORIGINAL: arlo1

Posts: 1
Joined: 3/5/2004
From: Boca Raton, FL, USA
Status: offline adamshowtime, hello.
First time to the forum, I'm the owner of the blue skyline with twin supercharger s w/ intercooler, these pictures were submitted to HPI website. (Previously was a single supercharger on the supra) Please note that the supercharger is a research mark-up for R/C product development. the SC that you saw was hand-crafted. meaning less precision and tolerance on the casing, tubine and shaft. I have tested them up to 20,000 rpm. the SC itself does not boost pressure but increase a lot of CFM. the intercooler was spreaded with CO2 to lower the intake temp. the A/F ratio need to adjust to a slightly richer setting....

Bottom line: the Supercharger does help but not a lot on a 2-stroke engine. I have seen a big improvement at the top end (where CFM is at its highest level) but at low end, it is just almost inpossible to tune without pressure regulator.

Keep your eyes out on the hpiracing.com gallery. I will be posting new pictures for my RUF porsche with rear mounted intercooler and lancer EVO V. Both supercharged and intercooled. I'm also working a chassis dyno bench. it will read Hp, engine speed and wheel speed.

Any one interested in my development, please email me taoarcdesign@aol.com

PS. the supercharger is a registered design.
This is the guy who owns the car you are arguing about!



arlo, this is what you just posted:

Bottom line: the Supercharger does help but not a lot on a 2-stroke engine. I have seen a big improvement at the top end (where CFM is at its highest level) but at low end, it is just almost inpossible to tune without pressure regulator

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RE: Holy S**t - 3/10/2007 5:47:22 AM   
arlo1


 

Posts: 183
Joined: 1/29/2007
From: Nanaimo, BC, CANADA
Status: offline 		yup meaning it works

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RE: Holy S**t - 3/10/2007 5:48:19 AM   
HimotoRacingUSA



Posts: 13167
Joined: 2/27/2006
From: howard beach, NY, USA
Status: offline 		By the way, this guy who sits behind the computer has more years experience in nitro Rc than you do X2 in your motorcycle mechanics. There is no reason to be nasty, i am just stating the facts that i have done in my research, no matter how angry that makes you. Even in the post you just made above, i quoted what the guy says, it does not help much on a 2 stroke engine. what more proof do you need? Its almost comical.

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RE: Holy S**t - 3/10/2007 5:57:37 AM   
arlo1


 

Posts: 183
Joined: 1/29/2007
From: Nanaimo, BC, CANADA
Status: offline 		You started by saying that it does "not work on a nitro engine because they have no compresion" I have acurate experiance with the real world and have been around nitro engines for a long time as well but I base my experiance on just that. experiance that I and others have gathered! not some crap people want to spew off because they are to afraid to actualy try it them selfs. Your claims are less than credieable. If it only made one percant more power it worked case closed. it can be imporved on.
quote:

ORIGINAL: ehroof

By the way, this guy who sits behind the computer has more years experience in nitro Rc than you do X2 in your motorcycle mechanics. There is no reason to be nasty, i am just stating the facts that i have done in my research, no matter how angry that makes you. Even in the post you just made above, i quoted what the guy says, it does not help much on a 2 stroke engine. what more proof do you need? Its almost comical.



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RE: Holy S**t - 3/10/2007 6:07:01 AM   
HimotoRacingUSA



Posts: 13167
Joined: 2/27/2006
From: howard beach, NY, USA
Status: offline 		this is my last comment to you, dont twist my words around, i stated there was no compression stroke, only a compression/ignition stroke meaning that the "compressed air" that the supercharger is making just goes out the exhaust port or at least 90% of it, the other 10% needs to be compinsated by richening the mixture thus cancelling any power gain, these nitro motors dont have reed valves so its just a waste. bro, go buy one, make it boost the power 50% and you can be the king of nitro. as for now, they dont work (1% to me is not working if that is even true). Do you own one, do you have proof that it work? All i can say is that the overwealming comments on this subject are negative, even from the post from the guy you posted earlier who has it. i wont waste another keystroke on you or your comments.

< Message edited by ehroof -- 3/10/2007 6:12:05 AM >

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RE: Holy S**t - 3/10/2007 6:14:15 AM   
Nathan9492



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Joined: 12/22/2005
From: Perth, AUSTRALIA
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RE: Holy S**t - 3/10/2007 6:17:42 AM   
arlo1


 

Posts: 183
Joined: 1/29/2007
From: Nanaimo, BC, CANADA
Status: offline 		One of the sled engines I worked on was a 300hp 670cc running 18psi They work and this perticular engine uses a rotary valve the same way a crank is used as a rotory valve on these engines. The losses out the pipe can be tuned for by changing port durations and pipe caracteristics. You say there is no compresion stroke, there is it is when the piston goes up and it happens every time. The tuning in the pipe is the same tuning on a motorcycle or sled engine it still looses air fuel out the exhauste port but you need to tune that out. Adding a tubo or supercharger will most likely make you want to change you pipe. If you say it is a 3% gain then it works even if it is only 3% it is a gain the fact is there is other people who read this and they will think the engine wont run when you say it wont work so you need to be carefull with what you say.

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RE: Holy S**t - 3/10/2007 6:18:08 AM   
HimotoRacingUSA



Posts: 13167
Joined: 2/27/2006
From: howard beach, NY, USA
Status: offline 		good one, lol

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RE: Holy S**t - 3/10/2007 6:20:10 AM   
arlo1


 

Posts: 183
Joined: 1/29/2007
From: Nanaimo, BC, CANADA
Status: offline 		Awsome i'll get my bacon stained wifebetter lol
quote:

ORIGINAL: harawong





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RE: Holy S**t - 3/10/2007 6:20:13 AM   
RoadBurner



Posts: 132
Joined: 5/8/2006
From: Mount Pleasant, UT, USA
Status: offline 		JERRY.....JERRY......JERRY.....JERRY!!! I think I need to take apart RC motor and really check out what is going on I never paid any attention.....I now I wished I would have.

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RE: Holy S**t - 3/10/2007 6:21:44 AM   
Nathan9492



Posts: 1391
Joined: 12/22/2005
From: Perth, AUSTRALIA
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quote:

ORIGINAL: arlo1

Awsome i'll get my bacon stained wifebetter lol
quote:

ORIGINAL: harawong





I'll get steve onto you

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RE: Holy S**t - 3/10/2007 6:22:30 AM   
arlo1


 

Posts: 183
Joined: 1/29/2007
From: Nanaimo, BC, CANADA
Status: offline 		I have mine apart right now and I am porting it it is a pretty good buit little thing for the price we pay for sure.
quote:

ORIGINAL: RoadBurner

JERRY.....JERRY......JERRY.....JERRY!!! I think I need to take apart RC motor and really check out what is going on I never paid any attention.....I now I wished I would have.



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RE: Holy S**t - 3/10/2007 6:28:47 AM   
RoadBurner



Posts: 132
Joined: 5/8/2006
From: Mount Pleasant, UT, USA
Status: offline 		Hey arlo1 is begining of the intake and exhaust ports exactly the same distance from the top of the sleeve? measuring from the inside of the sleeve! My assumtion would be that the intake would be lower!

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RE: Holy S**t - 3/10/2007 7:31:11 AM   
arlo1


 

Posts: 183
Joined: 1/29/2007
From: Nanaimo, BC, CANADA
Status: offline 		yes the tranfer/intake ports are lower than the exhauste port. I have a mesurement for my exhauste port duration it is 154.5 deg duration. I dont have the tranfer deg but it is probably around 125-130 deg duration I am not going to change that. This engine is probably not worth to much time porting just some blending, it is to fast for this lil car anyway lol.
quote:

ORIGINAL: RoadBurner

Hey arlo1 is begining of the intake and exhaust ports exactly the same distance from the top of the sleeve? measuring from the inside of the sleeve! My assumtion would be that the intake would be lower!



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