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All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> HPI Racing >> HPI On-Road >> HPI DVD break in instructions?
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HPI DVD break in instructions? - 3/2/2007 11:28:08 AM   
Test005



Posts: 1044
Joined: 4/28/2004
From: Ţo, FINLAND
Status: offline 		I bought the RS4 18ss kit today and it comes with a dvd.
Checking the dvd there's some break in instructions that I don't really agree with. I'm new to car engines, but aren't these standard ABC lined?
Flying model airplanes, you definately don't let a new 2stroke/abc engine idle at rich setting to break in, the ABC liner need heat to expand and running to cool will rather damage it than break it in.

I would prefer to load the engine at a middle setting, not too rich, but not too lean for 3-5minute cycles or should I follow HPI advice and break in slobbery rich with no load?

       Post #: 1

RE: HPI DVD break in instructions? - 3/2/2007 12:25:39 PM   
HeLLsGoD



Posts: 719
Joined: 2/10/2007
From: hellJP, ANTARCTICA
Status: offline 		umm i dont know plane engines that well but they have different cooling methods and fuel/oil mix dont they? They might function a little different because on every onroad nitro engine all engine manufacturers recommend to be on the rich side at break-in. Plus dont you break-in plane engines on one of those stands with a prop?

Its best you run it slightly rich just to be on the safe side, plus your covered by warranty this way. You can either do heat cycle method or the dvd instructions which ever your more comfortable with. The heat cycle method proves successful for most people/engines.

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- HPI RS4 - HPI sprint 2 -
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(in reply to Test005)
       Post #: 2

RE: HPI DVD break in instructions? - 3/2/2007 12:31:22 PM   
Test005



Posts: 1044
Joined: 4/28/2004
From: Ţo, FINLAND
Status: offline 		Yes, I meant to break it in rich, but not slobbery rich and with load to get the temperature up.
An airplane ABC that is too rich and just idle won't get warm at all = the ABC liner won't expand, causing premature wear.

Disclaimer: New at car engines

(in reply to HeLLsGoD)
       Post #: 3

RE: HPI DVD break in instructions? - 3/2/2007 1:13:52 PM   
hpi apollo



Posts: 2639
Joined: 5/13/2006
From: Georgetown, KY, USA
Status: offline 		http://www.johnnycoolguy.com/JCGR/main/tech_break-in.html


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RE: HPI DVD break in instructions? - 3/2/2007 2:15:19 PM   
iexion


 

Posts: 795
Joined: 8/1/2006
From: Sioux Falls, SD, USA
Status: offline 		I want to throw in the traxxas dvd way to break in an engine. It bassicly says to run at low rpm's ( 1/8 to 1/4 throtle ) for 2-3 seconds on the fisr tank. then 1/4 for 3-4 sec on the 2nd tank .then half throttle for 4-5 sec on the 3rd tank, 3/4 open on the 4th tank for around 5 sec. then 5th tank wide open for 5 seconds, Im not 100% correct but i know its really close (83.46%)

http://youtube.com/watch?v=jbyLmcGRnlw < 1st tank
http://youtube.com/watch?v=FQ5ewz5ujxs < 2nd
http://youtube.com/watch?v=gKO1S3K5_Ak <3
http://youtube.com/watch?v=0HY7W4NezwQ <4
http://youtube.com/watch?v=5lJtsA0vkeI <5
http://youtube.com/watch?v=pEGjExP9GkM < tuning
This way of tuning did wonders for my 12rss engine (hpi)

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RE: HPI DVD break in instructions? - 3/30/2007 5:16:08 AM   
kh15



Posts: 608
Joined: 5/6/2004
From: gales ferry, CT, USA
Status: offline 		on that 4th tank video posted above he says dont let it shift into 2nd gear. should i not let me hpi evo shift as well? what if it shifts before i can get the trigger to half throttle?

(in reply to iexion)
       Post #: 6

RE: HPI DVD break in instructions? - 3/30/2007 10:51:18 AM   
HeLLsGoD



Posts: 719
Joined: 2/10/2007
From: hellJP, ANTARCTICA
Status: offline 		Some cars shift early, some dont so dont be alarmed. Just keep it at a appropriate speed like on the video

_____________________________

- HPI RS4 - HPI sprint 2 -
Dream, Drive, Drift.

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       Post #: 7

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