Newbie Nitro Question

[tucfaz]

Hi,

Have some question about Nitro fuel.. Some of the bro here said we have to run at least 20% Nitro on an OS 50 Hyper Engine.

I did a search on the web and found the below.

http://www.curtisyoungblood.com/faqs/search.php?id=451

Seems that it's ok even to run 15% on an OS 90 engine.

Really blur here..

Can some expert kindly please throw some lights on this.

Thanks.

[ammo]

Nitro levels is dependent on your own demands and hence preference.

Higher nitro = more power
Low nitro = less power

Do remember when you change in between nitro levels, a retuning is required

[tucfaz]

Hi Ammo,

Thanks for the input. Is it true that we can start with low nitro, and move up to higher grade, but not from high to low?

BTW. What do you mean by "Returning is required"?

Thanks again.

[awesome]

Hi Ammo,

Thanks for the input. Is it true that we can start with low nitro, and move up to higher grade, but not from high to low?

BTW. What do you mean by "Returning is required"?

Thanks again.

its Re-tuning. means tune your engine again.

[ammo]

I personally choose a nitro level and use it all the way without changes.

Re-tuning, gotta re tune the engine so that it runs well with the different nitro level as before. Low and high nitro require slightly different needles settings to extract optimum performance.

[tucfaz]

Oh!!... "Re-Tuning" Sorry, having fever here.. Hence, a little blur now..

its Re-tuning. means tune your engine again.

[baby_zyklon]

you can run 10% or 30%. The difference will be amount of power and temperature of engine. By right, more nitro will give more heat, but because having more nitro give you a bit more power, so you can run richer to compensate for the extra heat without seeing any power decrease. If you don't need power, running 15% and 30% will not make any difference, other than smoke and wallet.

You can go up and down with nitro %, just retune engine. Some say if you up the nitro % and then go back down again, you get lesser power with the lower nitro than initially, but I think it is actually more of a got used to good power on higher nitro. I have gone between 15%-30% nitro on the same engine and doesn't seem to be adversely affected by the nitro change.

[vintcs]

be careful when choosing nitro. U need to check the lube content. not all 20% nitro has the same lube content in it. OS50 recomd at least 17% lube. Got a friend who actaully gotta 25% nitro but the lube is only 16% and must be for heli use.

[CKS]

er? how do u verify the lube content?

be careful when choosing nitro. U need to check the lube content. not all 20% nitro has the same lube content in it. OS50 recomd at least 17% lube. Got a friend who actaully gotta 25% nitro but the lube is only 16% and must be for heli use.

[jack_mav88]

er? how do u verify the lube content?

You can check this website for Coolpower Fuel:

http://www.morganfuel.com/cp_blends.htm

Cheers!

Joining us this sat???

[CKS]

haha
see how.. maybe fernvale if theres ppl.. closer to where i stay actually

You can check this website for Coolpower Fuel:

http://www.morganfuel.com/cp_blends.htm

Cheers!

Joining us this sat???

[Ghostfit]

haha
see how.. maybe fernvale if theres ppl.. closer to where i stay actually

I think Jack is refering to Tampinese Ave 5 (pardon me if I'm wrong )
....If you're flying on Sun afternoon, I volunteer go fetch you lah !

Coming back to the topic of nitro content, I agree with baby_zyklon that going up and down with the nitro % will not harm the stock engine but I must add that if you have "optimised" your engine's head clearance for low nitro content fuel (eg: 15% & below) and you switch to 30% nitro without adding shims back to the head .....there will be a risk of damaging the engine.
....It really shocking to see how much power those guys (competing in the FAI F2A speed events) can squeeze out of their engines by "optimising" everything ......considering that the rules only allows them to run straight fuel meaning 0% nitro .....just 80% Methanol and 20% caster oil !

Tucfaz ......I think you would want to select a nitro % you're comfortable with (Power wise and wallet wise ) ...and than tune and optimise your engines based on that rather than switch and have to deal with inconsistency.

vintcs got a VERY valid point ! .....I'll be more concern with the oil content (and type) than Nitro content. ......be aware that synthetic lubes dun give the same protection as caster oil !

[CKS]

haha sure.. and THANKS!
where will u be flying on sunday afternoon?
think we shall PM

I think Jack is refering to Tampinese Ave 5 (pardon me if I'm wrong )
....If you're flying on Sun afternoon, I volunteer go fetch you lah !

Coming back to the topic of nitro content, I agree with baby_zyklon that going up and down with the nitro % will not harm the stock engine but I must add that if you have "optimised" your engine's head clearance for low nitro content fuel (eg: 15% & below) and you switch to 30% nitro without adding shims back to the head .....there will be a risk of damaging the engine.
....It really shocking to see how much power those guys (competing in the FAI F2A speed events) can squeeze out of their engines by "optimising" everything ......considering that the rules only allows them to run straight fuel meaning 0% nitro .....just 80% Methanol and 20% caster oil !

Tucfaz ......I think you would want to select a nitro % you're comfortable with (Power wise and wallet wise ) ...and than tune and optimise your engines based on that rather than switch and have to deal with inconsistency.

vintcs got a VERY valid point ! .....I'll be more concern with the oil content (and type) than Nitro content. ......be aware that synthetic lubes dun give the same protection as caster oil !

[abner]

haha sure.. and THANKS!
where will u be flying on sunday afternoon?
think we shall PM

Haha.. GHOSTFIT flying at Tampines Ave 5 afternoon 1530H-1600H onwards...

You can see the thread "DHPHF spotted at Tampines..." in the post picture forum

[ammo]

I need a nitro....