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RE: Nitro Guide and FAQs - 9/29/2007 7:33:07 PM   
hpi apollo



Posts: 2639
Joined: 5/13/2006
From: Georgetown, KY, USA
Status: offline 		i would advise not to crush the can, they can tear and leak air, if you happen to have a 1 gallon fuel jug that other fuel comes in then that would work too, or those 1 gallon windsheild washer fluid containers will work too, just wash them out and make sure they are completely dry


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RE: Nitro Guide and FAQs - 9/30/2007 12:05:10 AM   
madmax22


 

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From: Greentown, PA, USA
Status: offline 		k thanks

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RE: Nitro Guide and FAQs - 10/10/2007 4:21:38 AM   
hpi apollo



Posts: 2639
Joined: 5/13/2006
From: Georgetown, KY, USA
Status: offline 		has anyone been sharing this guide with other people? im trying to keep it near the top of the forum for all to see


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RE: Nitro Guide and FAQs - 10/10/2007 8:47:32 AM   
ozzie-crawl


 

Posts: 269
Joined: 5/11/2007
From: gold coast, AUSTRALIA
Status: offline 		excellent job guys i do a bit of work in a hobby shop fixing and tuneing cars and have found this thread very helpful not only to myself but to others i tell to have a look

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RE: Nitro Guide and FAQs - 10/13/2007 1:55:47 PM   
hotjoe


 

Posts: 1
Joined: 10/13/2007
From: , AUSTRALIA
Status: offline 		Hi, im new to Nitro r/c. can some one please help me. i have a 1/8 scale 4wd buggy with a 21 motor. i have run it in. i have tuned it in, it takes off like a bullet on half thrott, when i give it full thrott the buggy sounds like its going to die out on me?? when i back off on the thrott its OK. can some one please tell me whats wrong and how i can fix this problem.

Thanks: Hotjoe

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       Post #: 105

RE: Nitro Guide and FAQs - 10/14/2007 11:32:53 PM   
hpi apollo



Posts: 2639
Joined: 5/13/2006
From: Georgetown, KY, USA
Status: offline 		sounds like it might be tuned close to correct on the lsn but on the hsn its lean


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RE: Nitro Guide and FAQs - 10/15/2007 1:19:32 AM   
SAVAGEJIM



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quote:

ORIGINAL: hpi apollo

has anyone been sharing this guide with other people? im trying to keep it near the top of the forum for all to see


I try also, as a matter of fact, this thread just appeared because this great thread has not yet been turned into a sticky

http://www.rcuniverse.com/forum/m_6490016/tm.htm

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RE: Nitro Guide and FAQs - 10/24/2007 11:51:22 PM   
Da Smak


 

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quote:

ORIGINAL: Slo-V Flyer

hpi apollo,

If you read my post you'll see that I understand how cold air is denser and all and warm air is thinner. What I was trying to say is that if I run in cold(er) weather say 45-50'F, the engine may warm up, but it will simply not run at optimum rpms, meaning it will run like it's too rich and just not have acceleration and speed. It's after a turn it a 1/8 - 1/4 turn leaner that it really starts to work right (smoke trail is just right, sound is just about crisp). In fact I seem to have better luck in cooler weather with respect to the engine running consistantly, while in warmer weather (65+) I'll usually have to go in and richen it as the tank gets low and it gets above 270'F if I don't. So I'm not disputing the "rules of r/c nitro tuning," but simply pointing out an interesting observation. BTW my truck body does not have open windows/windshield, but simply relies on the cooling hole I cut above the engine to shed the heat out, so at least that much is not keeping the engine from heating up in cold weather.

However, next time out in cold weather (whatever of it we have left here in Texas ) I'll try to cover some of the heat sink and see which way I end up tuning the needle, and the effects on performance. Again I don't try to use the HSN as a thermostat, but usually try to strike a balance between power and heat. Maybe I'm still wrong but hey can you blame a nitro novice for trying? I mean the Pro .15 manual says to keep it at 225, which I can agree is is kinda low, and here you guys are saying that engines *can* be run as high as 270'F range. Who do you suggest I trust with my $110? I think I'll strike a balance of both (if possible).


I would have to agree with you there, on colder days you may need to lean out a little as fluid dynamics will allow the cooler thicker air to travel faster and it is possible to get more air through when cold than thinner air when warmer due to boundry layers being formed on the surfaces of materials they pass. Though in theory it should work the other way, sometimes it just doent for another reason.

P.S. I have always tuned the LSNfirst and in 25years it's never failedme yet, It doesn't matter which way round you do it, but I like to have a fat HSN so if I go too far on the bottom I will always counteract it in the mid - top whilst tuning.

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RE: Nitro Guide and FAQs - 10/25/2007 1:31:24 AM   
hpi apollo



Posts: 2639
Joined: 5/13/2006
From: Georgetown, KY, USA
Status: offline 		well to sum it up, denser air (colder) burns more fuel therefore it needs to be richer


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RE: Nitro Guide and FAQs - 10/29/2007 6:04:42 AM   
Reiko



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From: Liverwurst, CA, USA
Status: offline 		And a sticky it becomes. Nice work, hpi

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http://www.rcuniverse.com/forum/m_377662/tm.htm

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RE: Nitro Guide and FAQs - 10/29/2007 6:12:14 AM   
hpi apollo



Posts: 2639
Joined: 5/13/2006
From: Georgetown, KY, USA
Status: offline 		thank you very much Reiko


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RE: Nitro Guide and FAQs - 10/29/2007 4:13:47 PM   
nothinbetr2do


 

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From: elkton, MD, USA
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quote:

ORIGINAL: hpi apollo

has anyone been sharing this guide with other people? im trying to keep it near the top of the forum for all to see

i have been posting links to it for all the newbs i come across, cause i know that they will ask

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RE: Nitro Guide and FAQs - 11/3/2007 6:37:43 AM   
mtbkym01



Posts: 787
Joined: 4/10/2007
From: BrinsmeadQueensland, AUSTRALIA
Status: offline 		Just a quick question about fuel storage, what is it's shelf life like in unopened containers? Reason I ask is that I can get a pretty good deal on some 25% buggy fuel, but I am required to buy 4x 4 litre containers, and want to know if it will keep for a few months until I use it all. Thanks in advance

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RE: Nitro Guide and FAQs - 11/3/2007 8:19:58 AM   
ttoks



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From: leongatha,VIC, AUSTRALIA
Status: offline 		finely a mod pulled there finger out and sticked this, good thing they gave you the mod wand reiko.

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RE: Nitro Guide and FAQs - 11/3/2007 12:03:50 PM