LarryConrad
Well-Known Member
- Joined
- Jan 20, 2007
- Messages
- 2,773
14% KL100 Klotz with from 50 to 70% nitro. It burns clean and provides plenty of lubrication.
Can you tell us "how low did you go" in percentage oil? What motor(s) were you running?that weird z.
i tried it must have been 8 different gallons of of oil VISCOSITY's in the same oil percentages and no real noticable difference. this was done not changing anything on the boat.. only fuel.. and a radar gun in hand.. ( take that for what it is )
now when i went to different oil PERCENTAGES.. ya i did find some very noticable difference.. i suppose there is a chance that the lower percents flow better.. but you would think that would be true for say a HIGHER oil percentage with a THINNER oil.
who knows..
heck i would just like to go 100mph once. lol
good topic
There ya go Chris, get your 100 mph patch, Terry makes it sound easy, I know it's not.Can you tell us "how low did you go" in percentage oil? What motor(s) were you running?that weird z.
i tried it must have been 8 different gallons of of oil VISCOSITY's in the same oil percentages and no real noticable difference. this was done not changing anything on the boat.. only fuel.. and a radar gun in hand.. ( take that for what it is )
now when i went to different oil PERCENTAGES.. ya i did find some very noticable difference.. i suppose there is a chance that the lower percents flow better.. but you would think that would be true for say a HIGHER oil percentage with a THINNER oil.
who knows..
heck i would just like to go 100mph once. lol
good topic
Put an 80 in that 60 Crapshooter of yours, slap a 2170 on the back and come to Flint in the Fall, you'll go 100+!
Can you tell us "how low did you go" in percentage oil? What motor(s) were you running?that weird z.
i tried it must have been 8 different gallons of of oil VISCOSITY's in the same oil percentages and no real noticable difference. this was done not changing anything on the boat.. only fuel.. and a radar gun in hand.. ( take that for what it is )
now when i went to different oil PERCENTAGES.. ya i did find some very noticable difference.. i suppose there is a chance that the lower percents flow better.. but you would think that would be true for say a HIGHER oil percentage with a THINNER oil.
who knows..
heck i would just like to go 100mph once. lol
good topic
Put an 80 in that 60 Crapshooter of yours, slap a 2170 on the back and come to Flint in the Fall, you'll go 100+!
The oxygen bond in ehtylene is broken much more easily than the bond in proplylene. When I tested high nitro fuels with large amounts of proplylene (12 to 14%), they would not burn properly. Ethylene works properly in high nitro fuels of 78 to 82 %.80% nitro
12% ethylene oxide
8% oil (2/3 Klotz super techniplate, 1/3 Blenzall racing castor)
Needles like 40% nitro with 40% menthanol alcohol.
Jim Allen
Mr. Jim, what are the advantages of the ethylene oxide over propylene oxide?
Have you ever tried acetone in your fuel mixture?
Thanks, Charles
ah terry i wish.. lol i want to go 100 with a 67.. we will see.. maybe some day
i went at low as 6% total oil.. motors were fine but like i said.. for a fuel to be sold for everyday use.. i suggested they not move that direction.
that was with both 21 motors and bigger motors like 67's
the oil content they are currently producing IS NOT that low.
chris
The oxygen bond in ehtylene is broken much more easily than the bond in proplylene. When I tested high nitro fuels with large amounts of proplylene (12 to 14%), they would not burn properly. Ethylene works properly in high nitro fuels of 78 to 82 %.80% nitro
12% ethylene oxide
8% oil (2/3 Klotz super techniplate, 1/3 Blenzall racing castor)
Needles like 40% nitro with 40% menthanol alcohol.
Jim Allen
Mr. Jim, what are the advantages of the ethylene oxide over propylene oxide?
Have you ever tried acetone in your fuel mixture?
Thanks, Charles
I never tested acetone as an ignitor for nitro methane.
Jim Allen
I hve tried most of the commercially available fuels over the years and have found none better than Cooper fuels (available from S&W Hobbies). I have been running 70% nitro with 6% percent oil,without a lubrication related failure. Brian Cooper explained to me how all the products in his fuel worked. The combustion process in our engines require at least 6% oil to keep the "flame lit". I have run this fuel in all my engines from .12 up to .82 and they love it .My .12 Orion CRF engine will turn over 40k rpm, my K&B .45 29k rpm and my OPS .80 25k+ rpm. The fuel is also easy on glow plugs. (Odonnell #9)
Bob Kensill
I hve tried most of the commercially available fuels over the years and have found none better than Cooper fuels (available from S&W Hobbies). I have been running 70% nitro with 6% percent oil,without a lubrication related failure. Brian Cooper explained to me how all the products in his fuel worked. The combustion process in our engines require at least 6% oil to keep the "flame lit". I have run this fuel in all my engines from .12 up to .82 and they love it .My .12 Orion CRF engine will turn over 40k rpm, my K&B .45 29k rpm and my OPS .80 25k+ rpm. The fuel is also easy on glow plugs. (Odonnell #9)
Bob Kensill
Bob:
I agree with what you are doing....
I don't run that low a percentage of oil (I run 12% Morgan Synthetic).
BUT, here is the bottom line: If you have 12oz of fuel in your tank. How much of that mixture is BURNABLE? For you all but 6% is burnable. For those that are running 18% 18% is not burnable. What a difference and what a difference in performance that equals.
I would think that the answer to all of this is to run the least amout of oil that you can and still not have adverse effect on parts and bearings.
I am interested in what oil the Cooper Fuel uses as I would sure like to be able to reduce my oil content some more.
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