[felix21685]

hey guys,

Im about to start covering my burrito (yes still, i had to move into the dorms)
and i test ran a few 3d props on my easy sport with my tt 46 pro.

here are the results..

11 x 5 prop = 12600 RPM this is what i use to just fly it around normally.it spools up pretty ok..
11.5x4 = 12300 RPM this prop was ok but wont have too much thrust..
12.25x 3.75 = 11000 RPM this prop was the worst in spool time..i really dont think this will be a winner.
12x 4 = 11700 RPM this prop was the fastest in spool up time..and i think will be the winner.

These are the props i tried using the stock tt muffler. which i am going to upgrade to the Tower muffler which should boost the rpms a little bit.

Do you guys think i should try the 12.25 x 3.75 after i get the new muffler or stick with the 12 x 4..??

Thanks
-Felix

 

[ChuckAuger]

If you have them both already, try them both. Different folks like different things from their props....you might find that what somebody else likes might not necessarily be just exactly what you like. In fact, try all the props you have, you might find that one of the others might fit your needs better right now.

 

[PaulSwany]

hey guys,

11.5x4 = 12300 RPM this prop was ok but wont have too much thrust..

Actually... I've run that motor... and it really likes the 11.5 x 4... Max rpm isn't really the most important number here.. Throttle transition and spool up are pretty important as well as good low end torque... That's what gets you out of a jam when you are hovering low and things start to go south....

 

[capncrunch]

yes! a better-breathing engine will transition and accelerate (spool up) more easily. I had an os46 on a full pipe and it would do a 12.75/3.25 well, but then the pipe fell off its mount and i swapped in a stock muffler, and it had terrible transition.

I went to the 11.5x4 and then after i put the pipe back on I decided that it actually was the better prop with the pipe.

uh long story short, I'm a big advocate of testing out different props, as long as you are willing to be patient and objective.

-barrett

 

[McDDD]

My old (R.I.P) Sledge had a TT 46 at one time. My favorite props were the APC 11.5x4 and the APC 12x4. The inflight differences between them were very subtle. I've never been fond of the 12.25x 3.75 due to the slow spool up time.

 

[rcam]

Sorry to hear about the Sledge Dave.

I like the 12X4 on my TT .46. I think the spool up time is much quicker than with the 11.5X4.

 

[446]

I've been using the 12-4 lately on my s.t. was using the 11-5 but the 12-4 spools as quick and has faster thrust response- costs a little more, though; guess they sell them by the inch?

 

[felix21685]

thanks for the replies.

now the strange thing is my 12x4 i tried looked like a skinny or narrow prop compared to the 12.25x3.75 which had bigger "paddles" if you know what i mean is this the correct 12x4 to use or is there one for something else and one for 3d to scoop more air ???

-Felix

 

[Quicker]

My favorite is the APC 11.5x4.

Here is a thread with the results I had adding a MCP. Thanks for the hlep, Dave!

http://theprofilebrotherhood.com/forum/viewtopic.php?t=593

I'm now swinging it at 14,000+ with INSTANT spoolup. It's a whole new plane, now!

 

[ChuckAuger]

thanks for the replies.

now the strange thing is my 12x4 i tried looked like a skinny or narrow prop compared to the 12.25x3.75 which had bigger "paddles" if you know what i mean is this the correct 12x4 to use or is there one for something else and one for 3d to scoop more air ???

-Felix

Yeah, that's the way they are. The 12X4 will turn faster and spool up faster since it has the skinny blades. The 12.25 X 3.75 is a control line stunt prop that caught on for 46 sized 3D.

 

[felix21685]

hey guys

have you seen anyone with a macs muffler on their TT 46 pro ?
how many more rpms will it give me compared to the tower muffler?

-Felix