e-etc rpm

[OspreyVic]

I attached the best picture I could find that also shows my motor. Hope this helps.

[Whitto]

The 21in Viper was very slow out of the hole ... it sucked some air on tight corners even when the motor was trimmed all the way down.

Top end was great but the motor struggled. The 17in is much better right through the rev range.

It's a case of trial and more trial until you find what works best for you ... Good Luck Glehav

[glehav]

i took my boat back to the lake this weekend and it ran 42mph at 5200 rpm now thats almost there. i am happy with that. you know one thing i was not taking in to account was the wind was i runing with the wind or against it.and i did move some stuff out of the front storage locker. to make the bow lighter. whitto do you know if viper makes a 18" 14 1/2 prop that might be the ticket a little less bottom end and some more top end. i might go to one if any thing ever happens to the one i am running now.. my motor ran great. and we had a great time.... thanks whitto

[Whitto]

Originally Posted by glehav

whitto do you know if viper makes a 18" 14 1/2 prop that might be the ticket a little less bottom end and some more top end.

Here is a list ...


150-250 HP Evinrude® E-TEC®; 25” - 90 E-TEC®, 115 E-TEC®

Std. Rotation Counter Rotation Type Blades Dia. Pitch 763453 Aluminum 3 151/2” 13”
763471 Aluminum 3 15” 15”
763467 Aluminum 3 147/8” 17”
763468 Aluminum 3 141/2” 19”
763469 Aluminum 3 141/4” 21”
763470 Aluminum 3 141/4” 23”
763959 SSP TBX 3 157/8” 11”
763960 763961 SSP TBX 3 157/8” 13”
763962 763963 SSP TBX 3 15” 15”
763910 763911 Viper TBX 3 15” 14”
763912 763913 Viper TBX 3 1 43/4” 16”
763914 763915 Viper TBX 3 14 3/4” 17”
763916 763917 Viper TBX 3 1 43/4” 18”
763918 763919 Viper TBX 3 14 3/4” 19”
763920 763921 Viper TBX 3 1 43/4” 20”
763922 763923 Viper TBX 3 14 1/2” 21”
763924 763925 Viper TBX 3 1 41/4” 22”
763936 763937 Cyclone TBX 4 14 1/2” 15”
763938 763939 Cyclone TBX 4 141/4” 17”
763940 763941 Cyclone TBX 4 141/8” 18”
763942 763943 Cyclone TBX 4 14 1/8” 19”
763944 763945 Cyclone TBX 4 14” 20”
763946 763947 Cyclone TBX 4 14 ” 21”
763948 763949 Cyclone TBX 4 14 ” 23”
177264 Raker II TBX 3 141/2” 22”
177265 Raker II TBX 3 14 1/2” 24”
177299 Raker II TBX 3 14 1/2” 25”
177266 Raker II TBX 3 14 1/2” 26”
177267 Raker II TBX 3 14 1/2” 28”
763933 Renegade Bass TBX 4 13 1/2” 23”
177129 Renegade Bass TBX 4 13 1/2” 25”
177130 Renegade Bass TBX 4 13 1/2” 27”
763984 763985 Rebel TBX 3 153/4” 15
763986 763987 Rebel TBX 3 151/2” 17
763988 763989 Rebel TBX 3 153/8” 18
763990 763991 Rebel TBX 3 151/4” 19
763992 763993 Rebel TBX 3 151/8” 20
763994 763995 Rebel TBX 3 15 21
763996 763997 Rebel TBX 3 147/8” 22
763998 763999 Rebel TBX 3 143/4” 23
764000 764001 Rebel TBX 3 141/2” 25

Whew ... now the hard part Glehav ... pick ONE !

[glehav]

wish i had the money to buy 2 or 3 of them to check them out thanks whitto

[Putershark]

No need, just buy one and swap untill you find the one that works best Merc has a demo program that does just that...

Mercury Propellers | Mercury Advantage