h&m fast cat

[roussos.p.antonios]

Hi i am reading this forum for a few months now and you have help me a lot. I have build few boats. this cat is my last project.Sorry for the photos are not goods.
This is my first video:

http://www.youtube.com/watch?v=wha33t6kxBk

I will post an other one.
I need your help about wich prop is best 2blade or 3blade for hi speed?
thank you
Antonios

[ChaKane]

Two blades will give a higher speed than a similar sized 3 blade but the 3 blade gives better bite on takeoff and coming out of a corner.

[roussos.p.antonios]

The props i have use are 437/3, 440,442 and i have also 640,642 the props are all sharpened and balanced.
Thank you
Antonios

[roussos.p.antonios]

ChaKane thank you for your replay,
for that project i need the best prop only for hi speed.
Thank you

[video200]

that looks like a drifter S. not shure on the motor. but on a feiago 8XL the x640 and x642 have given the best speed on my drifter S (with some help from prochopper)

[Avanti]

great looking boat

[roussos.p.antonios]

the boat is the agitator from h&M and the motor is lehner 1950.
i have run with a feigao 9xl 5s lipo and 642prop.
here is my last video with lehner motor 1950 hi amp. 5s lipo 25c and 442prop.

http://www.youtube.com/watch?v=BXJkEYu_JqA

if i run the same set up with 640prop.it would be faster? with lower amp.


x442:total pitch 2,310".........................x640:total pitch 2,510"

[video200]

the x640 should be faster then a x442

but after looking at that vid. are you shure you realy whant it to be any faster ?
seems like you need a bigger lake

[Eyekandyboats]

nice boat
i used to have a coupler 1950's. what turn is yours. that way i can have a better idea to help you out.
your boat will like a larger diameter prop rather then more pitch
442 or a M445 D/T would be very user friendly. But it depends on the turn of your motor

nice cat. I just bought the same one running twins
check out my thread "more power"

[roussos.p.antonios]

the x640 should be faster then a x442

but after looking at that vid. are you shure you realy whant it to be any faster ?
seems like you need a bigger lake

thank you for your answer, i realy want to go faster at least 125km.
what about the amps they will drop down? the lake is big very big.

[Eyekandyboats]

your not going to run that speed with that hull.
sorry.

[roussos.p.antonios]

nice boat
i used to have a coupler 1950's. what turn is yours. that way i can have a better idea to help you out.
your boat will like a larger diameter prop rather then more pitch
442 or a M445 D/T would be very user friendly. But it depends on the turn of your motor

nice cat. I just bought the same one running twins
check out my thread "more power"

thank you for your reply.the motor is 1950 6T (2090kv)hi amp.
why you think a larger diameter prop it is better for my boat.
i think m445 is to big but i'm waiting your opinion.
sent pics.from your cat and when you finish it a video.
thank you
antonios

[roussos.p.antonios]

your not going to run that speed with that hull.
sorry.

why???
i think i will try!!!!!
how fast you think it can go? in my last run the top speed was 98.6km on 5s.
i will try 6s.

[bonewar]

Antonio's what was the fastest 2 blade prop you use, maybe go back to it and try advancing the timing on the motor to get the speed your chasing , just a thought , as you get to the top reaches of advance the motor and esc become less efficient , the idea being two go back and bump up the prop diameter and pitch to use up your spare amps on low timing, then wind up the timing to give you extra kick. this might help you with a little more speed. bye the way nice boat mate.

[Eyekandyboats]

98 km'H is just close to 60 mph which is doable.
but i do think seeing 70+ mph with that hull might push it over its limit.
as for 6S. you could try. but a small prop is necessary..
don't go for timing on Hi. with your motor that is a bad idea. The lehner does not like HI timing and will not run efficient or yield any better speeds.
i have used this motor ( not the same turn but same motor) for a couple boats a while ago LOW normal 0 timing was great and i used the 8 turn are and ran a 447 on 4s. go for a large diameter and lesser pitch 4 serise or M6 serise props.