Just asking if you go from a 3/16 bore prop octura and open it up to 1/4, in a saw type setup would it still be strong enough?
has anyone done this ?
Just asking if you go from a 3/16 bore prop octura and open it up to 1/4, in a saw type setup would it still be strong enough?
has anyone done this ?
I would think you would weaken the prop hub substantially, and introduce all sorts of balance issues.
0.187 flex is plenty strong, Especially the welded ones from Wholt RC.
http://www.rcraceboat.com/
Cheetah, Super Rio, (Mod) Starship (Mod and sold),
very very hard material to cut,,,with what equipment I have ,,, I will not do it for customers I'have ruined a few props that way
If you just have to use 1/4” cable, get one with a steped-down stub shaft. I would NOT drill out a prop, especially for high rpm SAW-type running.
https://www.offshoreelectrics.com/pr...?prod=ose-1290
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I was going by your post #6.
I have broken the stub off a step down cable using a 3/16"dog. If you decide to go with the cable Fluid linked to consider using a 1/4" dog. While it is still possible to break the stub off (although I haven't) it is less likely since you won't be removing material from the 3/16 portion of the stub for the flat for the dog.
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Here is the problem with the OSE shaft for me, mine is 5 1/2 inch before the flex OSE one is 4 inch.
It will not work with my drives
Mine , my bearings are at about 2 and 5 and it's 8mm thick shaft.
1553852644590653879627.jpg
OSE , 3/16 to 1/4
ose-1290_shaft.jpg
Last edited by Speedfreek; 03-30-2019 at 06:59 PM.
HMmmmmmm.......
After all the advice from very experienced people, those who have tried and also from dasboata, the prop guru, it's not advisable to do it. . . then perhaps he needs to find out for himself and go ahead and do it. . .Maybe he will be successful and we can all learn something new!. . .It's like telling a driver not to go through a red light as you might get caught and get a ticket . . .even worse get into an accident. So the driver does it a couple of times and gets away with it, finally on the third time he goes through the red light he gets hit by another car. . .the results are devastating, not just a ticket but perhaps lives lost. I apologize for the very harsh analogy but same principle.. .take the advice and save yourself the trouble. I too have tried it with no success as I ruined the prop before I could even put it on and break it during use. ..
Using a 1/4 drive dog is a brilliant idea.
This puts all the stress on the outer diameter, and is not transferred through the step down.
I can't say for sure, but I'm willing to bet that the step down has a square corners at the step, which will lead to stress concentrations.
Going with the 1/4 drive dog eliminates all of that. That would be a much more robust setup.
Cheetah, Super Rio, (Mod) Starship (Mod and sold),
[QUOTE=Speedfreek;733986]What can you recommend in a two blade in a 1/4 Shaft ABC, and a little more aggressive then a Octura X57 ?
Need CR too !
[/Q 2214 2215 ish
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