Prop help

[135pilot]

Hey all,

I’m looking for some input on a magic Scepter prop size. I got a 525EFI, bravo XR (1:50 ratio), currently has a 26P for a prop. Was wondering if anyone has used a 28P or even a 30P, or experimented with the three?

Thanks!

 

[Shlbyntro]

Hmmmm, try a new prop he says??

what Rpms are you running at WOT bud?

 

[135pilot]

Hmmmm, try a new prop he says??

what Rpms are you running at WOT bud?

83mph @ 5800 WOT. Bimini down, three people and half tanks.

 

[Shlbyntro]

ya, I think a 28 would put you where you want to be. it will knock your rpms down 2-300 and prolly give you a boost of a couple mph

 

[135pilot]

ya, I think a 28 would put you where you want to be. it will knock your rpms down 2-300 and prolly give you a boost of a couple mph

Yeah that’s the goal, less RPMs at a cruise speed and some top end. You think a 30p would be too much for it to get on plane?

 

[02HoWaRd26]

I got a Max5 26, as well a B1 28 I’m looking to sell.

 

[Runs2rch]

83mph @ 5800 WOT. Bimini down, three people and half tanks.

Stock 525? If so 5250 is the limiter if I remember right.

 

[02HoWaRd26]

Stock 525? If so 5250 is the limiter if I remember right.

Yea it’s gotta have the tuned ecu

 

[Shlbyntro]

I think it would handle a 30 np if thats ur tru rpm currently. id verify the actual rpm tho before stepping up 2 sizes. tachs are more there for reference and arent always super accurate. i

 

[robby dmax]

Stock 525? If so 5250 is the limiter if I remember right.

I believe it is 5450 RPM on the 525

 

[135pilot]

Yea it’s gotta have the tuned ecu

How would one check if it has been tuned? Take it to a shop and download the map from the engine computer?

 

[02HoWaRd26]

How would one check if it has been tuned? Take it to a shop and download the map from the engine computer?

Simple part is the rpm, over 5450 and it has to be. But typically there will be a small sticker on the back of the pcm that will have 91octane only and a shop name.