Prop ? on Genesis boat

[lenny]

Ok,
I did realize you new your boat was running at a saw setup. 2075kv x 22.2v = 46065 rpm
I run a neu 1515 1y 2200kv / sk 180 / 187 flex / x442 / 4s2p 30c 5000mah cells,
Also setup with a offset rudder and run pretty nice at 45mph.
Good luck with yours and get some video of it running please.

[viper1]

Viper1 when you machined it do you mean you drilled out a 1/4 " through the strut and then used 3/16" inner by 1/4" bushings? My concern if I were to do that is if I can get it perfectly straight. Did you use a drill press? I think it might be easier for me to just buy a strut a flex shaft and a coupler. Thank you also for explaing the prop for me. I just need to do the 3/16 conversion before I can get that prop. What 1900 motor where u using? Thanks again everyone!!!

Not 'through' as the orig tube is smaller then 1/4" O.D., it's 6mm so only the part for the bushes are drilled. Yes I used a lathe. Buying is always easier
I used this motor .
It's a ripper, try it and I promise you won't regret it.

[martin]

Not 'through' as the orig tube is smaller then 1/4" O.D., it's 6mm so only the part for the bushes are drilled. Yes I used a lathe. Buying is always easier
I used this motor .
It's a ripper, try it and I promise you won't regret it.

Did you machine the strut slightly under 1/4" so the bushes were a push in fit or use loctite to hold the bushes.

[viper1]

1/4" , they are a press fit then. If you see the bushes they have a axial slit in them

oct-oc4lt_small.JPG

(ignore size on those)

[martin]

Were these Octura bushes or one of the many others around.

[TristanJones]

I've just done the 3/16 upgrade on my genesis.
If you swap the strut out you will need to make sure the one you get fits the stuffing tube or you will need to replace it also. I got a 3/16th octura strut with skeg from OSE which would not fit the original stuffing tube and was to suit an odd size of brass tube I couldn't get locally. I recommend you make sure you get the right one with your order from here or just get the upgrade strut that fits straight up. save yourself a bunch of work.
3/16 .187 is defo the way to go. dont waste your time with 3/16 .150 and buy assembled
I ran mine with the stock motor on 5s with a TFL 440 prop, it did 80km/h but got a bit hot. (60degC)