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Old Nov 15, 2012, 07:29 PM
NeverAgainVolunteerYourse lf
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Australia, QLD, Regents Park
Joined Mar 2007
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Hi Bruce, the tube has a brass bush at each end and the centre is filled with marine grease, the top of the tube is slightly higher than the waterline as well which helps, Its built the same as a prop shaft

cheers
Nick
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Old Nov 16, 2012, 01:19 AM
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Adelaide,Australia
Joined Dec 2009
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Thanks mate!!
I am thinking about having working stabs in my 1/72 Type23 HMS Iron Duke.....when I find the bench space to build her!

Cheers Bruce

PS George Sitek is the go to man for custom stuff!! How did ya prop come off ?? I Loctite mine on after losing one off CGN9 on early trials!!
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Old Nov 16, 2012, 02:53 AM
NeverAgainVolunteerYourse lf
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I think I hit a hazard of the lake being in a lower socio-economic area

shopping trolley or bike or safe, all of these have been dragged out of the lake in the past It could have also been construction debris from the building of the boat ramp, it was neat that area

Prop was lock tighted on and had a really long thread as well, should have learned from Peters experience and put a grubscrew or pin

Cheers
Nick
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Old Nov 17, 2012, 12:34 AM
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Adelaide,Australia
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That's a big chunk of metal to lose mate! If it was ferrous(iron based/alloyed) you could have searched with a metal detector.... Oh well someone may find it one day (probably by stepping on it!)
Cheers,
Bruce
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Old Mar 06, 2013, 05:05 AM
NeverAgainVolunteerYourse lf
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Australia, QLD, Regents Park
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SPS-49 reflector

Long time no update and no real progress, I've been working for the last few days on this


Next warship will have a phased array

Cheers
Nick
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Old Mar 06, 2013, 05:08 AM
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Australia, WA, Garden Island
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Quote:
Originally Posted by nick_75au View Post
Long time no update and no real progress, I've been working for the last few days on this


Next warship will have a phased array

Cheers
Nick
THAT is real Art
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Old Mar 06, 2013, 05:14 AM
NeverAgainVolunteerYourse lf
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Thanks
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Old Mar 27, 2013, 03:23 AM
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Australia, WA, Garden Island
Joined Nov 2010
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Had a debate with someone at work today re: brushed vs brushless.

Nick, I know you advocate brushless motors to some extent with scale models, however you've used a Brushed scooter motor for your FFG? what were your reasons behind that, purely to fulfill my curiosity
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Old Mar 27, 2013, 06:37 AM
NeverAgainVolunteerYourse lf
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Quote:
Originally Posted by Deckie View Post
Had a debate with someone at work today re: brushed vs brushless.

Nick, I know you advocate brushless motors to some extent with scale models, however you've used a Brushed scooter motor for your FFG? what were your reasons behind that, purely to fulfill my curiosity
Firstly, I already had the motor and doing the calculations on it it turned out to be a near perfect fit for the prop, I do under-volt it by running on 4 Cell Li-po. It has a very low 100 Kv and sufficient torque.

A suitable brush-less would either need to be as low KV, and expensive or a much smaller one geared down,similar 400 Kv motor with a 4:1 reduction has enough power, like this,
http://www.hobbyking.com/hobbyking/s...arehouse_.html

Cheers
Nick
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Old Mar 27, 2013, 07:08 AM
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Australia, WA, Garden Island
Joined Nov 2010
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Quote:
Originally Posted by nick_75au View Post
Firstly, I already had the motor and doing the calculations on it it turned out to be a near perfect fit for the prop, I do under-volt it by running on 4 Cell Li-po. It has a very low 100 Kv and sufficient torque.

A suitable brush-less would either need to be as low KV, and expensive or a much smaller one geared down,similar 400 Kv motor with a 4:1 reduction has enough power, like this,
http://www.hobbyking.com/hobbyking/s...arehouse_.html

Cheers
Nick
Alright, two more questions then based on the above:

(1) Would the scooter motor and propeller combo above fair well with just 12 volts?

(2)
This motor on 12 volts could achieve a very similar outcome?

http://www.hobbyking.com/hobbyking/s...ner_Motor.html
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Old Mar 27, 2013, 07:14 AM
NeverAgainVolunteerYourse lf
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(1) Yes though a bit slower
(2) Yes

Of course this would depend on having a similar size prop.
cheers
Nick
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Old Jan 15, 2014, 01:45 AM
NeverAgainVolunteerYourse lf
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Australia, QLD, Regents Park
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What resin to cast prop blade

I built a Silicone mould for my prop blades, I no longer have access to the foundry and I NEED a prop,

Oh and I'm a tightarse so want to do it myself, What should I use to cast the blades.

Cheers
Nick
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Old Jan 15, 2014, 08:23 AM
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United States, MI, Howell
Joined Jul 2012
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Could you use the molds to cast lost wax. Check your local college they may have an art class that will do small bronze casting
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Old Apr 04, 2014, 04:07 AM
NeverAgainVolunteerYourse lf
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Australia, QLD, Regents Park
Joined Mar 2007
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I've just brought some Smooth cast 385 to have a try with, the plan is a brass hub and secure the resin blades to it with small bolts, in planning for a future CCP

http://www.smooth-on.com/gallery.php?galleryid=183
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Old Jun 04, 2014, 05:47 AM
NeverAgainVolunteerYourse lf
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Australia, QLD, Regents Park
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Im in between work ATM so decided to make a bit of progress with the boat, And installing cabinets and benchtop into our laundry
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