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Henseleit 3DNT - Rocket - 3DMP > Fuel Question - OS91 HGL & Lotterle Carb
 
 
CEB
Heliman
Location: Ireland

I need advise !

I've read various forums regarding the OS 91 and the Lotterle carb and the specific fuel requirements (no nitro & 12% oil). What brand(s) of fuel have been tried with this combination.... That Work well!!

I ask as I am about to take ownership of a new 3DNT with OS91/Lotterle Carb...... bearing in mind the only fuels I can get are
Morgan blends i.e. Coolpower (which seems to have 17 - 22% oil)
and various Flair mixes!!!!!!!!!....

Any one mix their own brew/mix's, if so what oils do you use?


I'm sure this question has been answered before... I can't find an answer on the web!

Thanks,

Christian.
10-22-2003 Over year old.
 
 
Pascal
Senior Heliman
Location: Paris, France

Hi,


To be safe I mix my fuel myself :

20l of methanol.
3.0l (for ease of measuring it) of MicroMotul.
Done.

However, if you really want to use a given fuel, ie CP 0%, find its % of oil, and you can oder directly from Lotterle the appropriate needle for this %.
This carburator can be adapted easily to a variety of % of oil and therefore of fuel by just changing a needle.
Needles are available for fuel with 8% of oil to up to 25%.
So you can use it with CP30% if you really want to do it.
But :

It is a bit more expensive than the fuel I use.
You will be surprise by the power delivered by an OS91 with 0%, an Enya4 and a Tuned pipe, as in my 3DNT...


To discover the % of oil of a given fuel, put a quarter of liter in a large bowl, wait a week, what is left is only oil...

Pascal
10-23-2003 Over year old.
 
 
thierry
Senior Heliman
Location: Paris FRANCE

12 % synth glow
1% nitro

very powerfull and clean
10-23-2003 Over year old.
 
 
garry keogh
Senior Heliman
Location: Wicklow, Ireland

Wildcat fuel?

Hello all,
I know Christian (we fly in the same club) and I suggested to him in a PM that one solution is to take 0% WIldcat and dilute with methanol to get the oil % that he requires. Yes I have a good reason to suggest this as I import Wildcat fuels to Ireland.
Do any of you have experience of using Wildcat in this engine/carb combo?
10-28-2003 Over year old.
 
 
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Henseleit 3DNT - Rocket - 3DMP > Fuel Question - OS91 HGL & Lotterle Carb
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