Here is a bunch of info I found on another forum.. Some good comparisons..
Got a couple hundred liters of the 100LL Hope it goes well!
Bunch of info I scrounged up on Avgas. Just to get the facts out instead of everyone not knowing.
Heres some info from conoco phillips. Look down to the octane lean. That is the MON rating.
http://www.experimentalaircraft.info/doc/Avgas-specs.pdf
Additives - AO Antioxidants mg/gal 45.4
Additives - Conductivity Conductivity Improver 842
Additives - Dye Blue Dye mg/gal 10.2 805
Additives - General Note General Note 878
API Gravity (60 Deg F) D 4052 Density & Rel Dens API Report
Appearance D 4176 Wtr & Part Cont, Proc 1 Pass 841
Color, Visual D 2392 Color of Dyed Av Gas Blue
Copper Strip Corrosion D 130 Cu Str 2 Hr @ 212 F Rating 1b
Dist 10 Vol% Evap D 86 Dist at Atm Press Deg F 167
Dist 10%+50% Evap D 86 Dist at Atm Press Deg F 275
Dist 40 Vol% Evap D 86 Dist at Atm Press Deg F 167
Dist 50 Vol% Evap D 86 Dist at Atm Press Deg F 221
Dist 90 Vol% Evap D 86 Dist at Atm Press Deg F 275
Dist End Pt, corr D 86 Dist at Atm Press Deg F 338
Dist IBP, corr D 86 Dist at Atm Press Deg F Report
Dist Loss, corr D 86 Dist at Atm Press Vol% 1.5
Dist Recov, corr D 86 Dist at Atm Press Vol% 97
Dist Residue D 86 Dist at Atm Press Vol% 1.5
Freeze Pt D 2386 Freeze Pt by manual Deg C -58 808
Lead (Pb) D 5059 Lead by X-ray Spec gPb/gal 2.12
Lead as TEL eq D 5059 Lead by X-ray Spec ml TEL/gal 2.00
Net Heat of Combustion D 3338 Net Heat of Comb BTU/lb 18,720 835
Octane, Lean Number D 2700 Knock Charac by Motor 99.5
Octane, Performance No. D 909 Knock by Supercharge 130.0 809
Ox Stab, Lead Precip D 873 Ox Stab, 5 hrs aging mg/100ml 3 851
Ox Stab, Potential Gum D 873 Ox Stab, 5 hrs aging mg/100ml 6 851
Sulfur D 2622 S by X-ray Fluo Spec Wt% 0.05
Vapor Pressure (ASTM D 5191 VP Grabner (ASTM eq) psi 5.5 7.1
Water Rxn Vol Change D 1094 Water Rxn by manual ml + or - 2
Other - See Note Referee Methods 826
Other - See Note Test Tolerances
From Shell
http://www.docstoc.com/docs/7671746/ASTM-D-910-(Grades-Avgas-100-and-Avgas-100LL)
Typical Properties
Property
Max Value
Min Value
Knock Rating, Lean Mixture (Motor Method) Octane Number 99.5
Knock Rating, Rich Mixture (Supercharge Method) Performance Number 130
Freezing Point ºC -58
Distillation end point ºC 170
Reid Vapour Pressure @ 38ºC kPa 49 38
Sulphur content %m 0.05
Tetraethyl lead content gPb/l Avgas 100LL 0.56
Colour Blue
From BP, Though I have found other literature from BP stating that the Motor octane is 99.5 minimum, this is what is shown.
http://www.bp.com/liveassets/bp_int...s_pdfs/a/air_bp_products_handbook_04004_1.pdf
BP AVGAS 100LL
Specifications
British Def Stan 91-90
USA ASTM D910
Typical Properties
Knock rating
Lean mixture, aviation rating 105
Rich mixture, supercharge method 133
Tetraethyl lead, gPb/l 0.52
Colour Blue
Specific energy, net, MJ/kg 43.73
Density at 15ºC, kg/m3 715
Distillation
Initial boiling point, ºC 41
10% vol. evaporated at ºC 58
40% vol. evaporated at ºC 92
50% vol. evaporated at ºC 101
90% vol. evaporated at ºC 128
Final boiling point, ºC 156
Sum of 10% and 50% evaporated temperatures, ºC 164
Recovery, % vol 98
Residue, % vol 1
Loss, % vol 1
Vapour pressure, kPa 41.6
Freezing point, ºC below -60
Sulphur, % mass 0.0003
Copper strip corrosion (2h at 100ºC) 1
Existent gum, mg/100ml 1
Oxidation stability
Potential gum, mg/100ml 0.5
Lead precipitate, mg/100ml 1.0
Water reaction
Volume change, ml Nil
Interface rating 1
devilrmk
02-04-2010, 11:27 PM
Just to compare here.
Pump gas "87" octane regular is 82-83 MON or motor octane
Super or "92,93" octane is 87-88 MON.
The only race gas that I know is Sunoco 110 which is 105 MON
Jim
02-05-2010, 08:28 PM
This was a post by hammer on totally yamaha a few years back. Now I wouldnt argue with this gentlmen about much.
Tuesday, 31 January 2006
The following results were compiled by Intertek (fuel testing service)
OBJECTIVE:
To establish the RON (research octane number) and MON (motor octane number)
MON number is a better indication of fuel quality because it is more representative of high rpm, high load, conditions. The closer the RON and MON are the more stable the fuel is.
METHOD:
Use of CFR research engine with variable compression.
All test work carried out to ASTM D2699/D2700 standards.
RESULT:
100LL (Avgas) 100.5 MON and 103.2 RON (101.5 AKI)
91 premium unleaded 86.7 MON and 95.8 RON (91.2 AKI)
75% Avgas + 25% premium unleaded 92.9 MON 101.5 RON (97.2 AKI)
50% Avgas + 50% premium unleaded 91.6 MON 100.3 RON (95.9 AKI)
25% Avgas + 75% premium unleaded 88.5 MON 98.8 RON (93.6 AKI)
===============================================
Examples of fuel properties:
Sunoco 110
Specific Gravity 0.72
Research Octane 115
Motor Octane 105
Reid Vapor Pressure 8.0
Boiling Point (liquid to vapor)
10% Evaporation 160
90% Evaporation 260
100LL (Avgas)
Specific Gravity 0.67
Research Octane 103.2
Motor Octane 100.5
Reid Vapor Pressure 7.0
Boiling Point (liquid to vapor)
10% Evaporation 75
90% Evaporation 135
Torco 100 (Unleaded oxygenated)
Specific Gravity 0.75
Research Octane 101
Motor Octane 100
Reid Vapor Pressure 8.0
Boiling Point (liquid to vapor)
10% Evaporation 133
90% Evaporation 205
VP C10 (Unleaded non-oxygenated)
Specific Gravity 0.76
Research Octane 104
Motor Octane 96
Reid Vapor Pressure 1.9
Boiling Point (liquid to vapor)
10% Evaporation 212
90% Evaporation 266
_________________
Riding Yamaha Since 1978
Military Background:
B-52 Aerospace Maintenance
Precision Measurement Equipment
F-16 Avionics Systems
F-15 Avionics Systems
Information Management
devilrmk
