80+ mph 32" rivercat

[Chrissharp]

Out of curiousity did you do the barr cut the prather prop. Also does the prather prop have more rake angle or the octura cant really tell from the pics?

[kfxguy]

Out of curiousity did you do the barr cut the prather prop. Also does the prather prop have more rake angle or the octura cant really tell from the pics?

I think your asking if i did the back cut to it. yes i did. Honestly the look preety much the same (they have the same pitch supposedly) except the hub is 10mm on the prather and 8mm on the octura. my back cut is probably too small and i didnt bend the blades on any of them. i dont even know where to begin with bending blades.

[flraptor07]

Cupping blades is really touchy I made a little jigg with different size balls from some scrap bearings and I have a mini ballpeen hammer with the faces polished and you lightly tap the back side of the blade as it's laying on the ball. It takes a while to get the feel/ hang of it to know how hard and where to hit the blade. Once you get it figured out you can whip a prop out pretty quick.

[kfxguy]

I just ordered a X648 from dasboata and ordered a matching cell for my better batteries. Hopefully pick up a few mph. I want to try a neu 1521 1870kv motor still. I'm looking for one if anyone has one.

[iridebikes247]

so I take it the etti 150 is working well?

[kfxguy]

so I take it the etti 150 is working well?

I havent tried it. Im using the t180 with my billet cooling block. I got the etti so i could run on 7s, but since i was told a trick how to run the t180 on 7s, it works fine.

[olwarbirds]

Travis, a 1521 is alot of motor for that hull. If you dont have prop torque probs, its going to be a boat wheelie monster. Im fighting torque roll in my 37" cat (genesis) I can pull full 360 torque rolls if I try and thats with just a 642 prop 1515 2200kv 6s, fun to watch though. ..... DJ

[kfxguy]

Travis, a 1521 is alot of motor for that hull. If you dont have prop torque probs, its going to be a boat wheelie monster. Im fighting torque roll in my 37" cat (genesis) I can pull full 360 torque rolls if I try and thats with just a 642 prop 1515 2200kv 6s, fun to watch though. ..... DJ

It had a 1520 in it before. Its barely bigger than my 1518, just puts out 500w more (like .7hp). If i nail it all at once, it jumps about a foot into the air. I mean it completely leaves the water, If i ever have to jump a log or something...no problem lol. Torque roll is a non issue. I suspect my boat is heavier than yours too. Mine is reinforced everywhere, tips filled with epoxy. transom is more than a 1/2" thick. The sponson floors have been flooded with epoxy until they are flat. its probably over a pound extra from just reinforcing it. Try to add some stick on wheel weights in the bottom of the sponsons on yours. If it helps, then remove them and add epoxy to the floor for weight and strength. Just an idea, you may know more about it than me tho....you've helped me more than ive helped you lol.

[kfxguy]

Update: new best!

Only changes I made was better batteries on 7s. I bought an x648 and it went slower. Maybe motor don't have enough tq to turn it. I dunno. I made a few passes and even went farther and all I could get was 80.5mph. Put the m645 back on and went.......

[srislash]

Any chance you have a 646? I find a difference in that change on my DF

[kfxguy]

Any chance you have a 646? I find a difference in that change on my DF

I don't but I'm gonna order a few more props. Maybe I need to raise the strut? Maybe not enough power?

[flraptor07]

Travis, did you find a 1521 1870kv yet?

[srislash]

I don't but I'm gonna order a few more props. Maybe I need to raise the strut? Maybe not enough power?

You never know what very fine line of prop depth works Trav. That 1.5mm up May be the ticket for the 48.

[kfxguy]

Travis, did you find a 1521 1870kv yet?

No....I still want one tho.....

[kfxguy]

You never know what very fine line of prop depth works Trav. That 1.5mm up May be the ticket for the 48.

I think it must be the strut. I'm moving it and trying again tomorrow. Batts on charge right now. I'll report back in the morning. Stay tuned....I better break 85mph!