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View Full Version : Help me pick a prop for my BJ29



98Corvette
02-09-2016, 05:14 PM
I am looking to upgrade my prop on my BJ29V2. It has a Swordfish 120 esc and the Dynamite 1800 motor. I am going to be running a 5S setup. Reason being is that 4s is a bit slow for me and 6s seems a bit risky with getting the motor hot and a bit hard to control at max speed.. I just feel that 5s is plenty of safe power... Im using Turnigy 2s + 3s 65/130C 5000 Nano-Tech batteries. I am running a Miss Geico rudder setup (center instead of offset rudder) and a custom dual pickup setup with large water hoses.. Any ideas on which prop will give me the best performance and gains without the risk of too much stress or overheating on 5s???
In a friends boat, we changed the stock BJ 29 prop and gained an average of 2mph on 4s and didn't have enough speed tests on 5s or 6s. Went with a Grim Racer 42x55 AQUB9725 for around $21. I was thinking of going with this prop because it proved a gain, but I am open to other props as well and willing to spend the extra money on a sharpened and balanced prop. Soooooo, any ideas on what to get????

rw442
03-13-2016, 10:00 AM
Contact Dasboata and pickup octura x642 balanced and sharpened run them props on both my mystic 29 and miss Gieco mystic pulls 48mph on 4s with leopard 4074 2200 kv miss Gieco is still stock and runs around 42 on 4 s 55 on 6 s with timing lowered on motor to 7.5 instead of factory default 15. Degrees you won't regret it watch you temps though when you run bigger props I never run more than 3.5 minutes when I run the 642.

kfxguy
03-13-2016, 12:56 PM
I ran a abc 1615-17-45 (40.5mm, 1.5 pitch) on a geico last weekend and it ran very well. The boat not tuned in at all went 48mph on 4s with no problem. This prop is just more efficient than the octura x642 or the Grimm prop. Your boat would likely be in the 50's with it on 4s

rw442
03-14-2016, 12:52 PM
Thanks for the info never ran any of those props yet just bought a x440 3 blade will for my Gieco based on Raefel Lopez test with the Gieco gonna pm Dasboata on that 1615-17-45 for pricing and give it try.