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Old 10-04-2006, 04:55 AM   #1
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Default Running in LRP .18 on 20%?

ok me n my mate are having a little arguement about how to run in a .18 size LRP engine......i say u should run in the engine with wat u plan on using in it.....in this case run it in on 20% and use 20% in it......hes saying run it in on 5% and then use 15%

who is right and who is wrong?
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Old 10-04-2006, 06:34 AM   #2
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i've run all my .18 in on 10% then jumped up to 20% with no problems at all, now i'm using 16% as i'm starting to race with it and haven't had a drama, you just need to retune them for the nitro content, but i did run my .28 in on 25% with i was running at the time and dropped it back to 16% with a retune and works fine (only because that's all the fuel i had at the time 16%)
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Old 10-06-2006, 06:37 AM   #3
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Both ways are fine. Breaking in with lower nitro content, saves a little money (since you waste a lot of fuel during break-in & lower nitro fuel is cheaper).
The main thing is how it is tuned.
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Old 10-07-2006, 06:38 AM   #4
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Quote:
Originally Posted by duneland
Both ways are fine. Breaking in with lower nitro content, saves a little money (since you waste a lot of fuel during break-in & lower nitro fuel is cheaper).
The main thing is how it is tuned.
dude.....wasting a few buks more on your fuel isnt realy gona hurt if u got a 300 or 500 dollar motor.....like seriously........i wouldnt wreck a 500 buck motor ujst because im tight not to spend a few bucks more n get some more content nitro
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Old 10-07-2006, 06:59 AM   #5
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usually most experienced racers that i have talked to about this have recomended that the same fuel is used at runin as you use for racing
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Old 10-07-2006, 08:01 AM   #6
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Quote:
Originally Posted by itchy b
usually most experienced racers that i have talked to about this have recomended that the same fuel is used at runin as you use for racing
been told both versions and read both versions, so i guess no one right or wrong then, as long as you get the heat cycle right
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Old 10-07-2006, 08:54 AM   #7
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Quote:
Originally Posted by ProudSavageOwnr
dude.....wasting a few buks more on your fuel isnt realy gona hurt if u got a 300 or 500 dollar motor.....like seriously........i wouldnt wreck a 500 buck motor ujst because im tight not to spend a few bucks more n get some more content nitro
There is NO way that running lower nitro fuel will 'wreck' an engine. It's perfectly safe.
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Old 10-07-2006, 05:09 PM   #8
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Quote:
Originally Posted by duneland
There is NO way that running lower nitro fuel will 'wreck' an engine. It's perfectly safe.

err yes it can wreck an engine because running different nitro percentage = different temps which affects the way the sleeve and piston expand and contract........
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Old 10-08-2006, 01:36 AM   #9
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Quote:
Originally Posted by ProudSavageOwnr
err yes it can wreck an engine
Absolute twaddle

Thousands and thousands of glow engines have been running over the years with NO nitro in the fuel,just a methanol and oil mix.
In some racing applications nitro in the fuel is banned.
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Old 10-08-2006, 01:59 AM   #10
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Quote:
err yes it can wreck an engine
that is complete bullsh**,i have changed nitro in my engines with no dramas.i have gone from 20-30% nitro without problems.
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Old 10-08-2006, 05:56 AM   #11
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Quote:
Originally Posted by ProudSavageOwnr
err yes it can wreck an engine because running different nitro percentage = different temps which affects the way the sleeve and piston expand and contract........
Absolute bull. Temp is determined by how you tune.
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