Topic: new springer-cat build (Read 8353 times)

john44 · « **on:** July 17, 2012, 09:25:59 pm »

Hi Guys, I liked my first build Springer so much I decided do build another one.
It is different in the fact I have made the hull 1" longer & 2" wider and twin hull
So it ( hopefully ) does not dig down too much. So I can rescue boats quicker.
I have 2 model motors direct 555 motors & 2, 777 motors.
I intend to run 50mm props. Tornado 50a ESC
Has anyone used these motors or know what amps they draw at 8.4v

john

6705russell · « **Reply #1 on:** July 17, 2012, 09:31:16 pm »

Any pictures John?

john44 · « **Reply #2 on:** July 17, 2012, 11:40:23 pm »

Not as yet Russ, I will be posting some later.
I am only at hull glassing stage at the minute.Its plywood
I gave it a coat of resin, then close weave mat and 3 more coats of resin.
Just the wonderful job of flatting it all off now.

john

john44 · « **Reply #3 on:** July 18, 2012, 03:43:52 pm »

Just for you Russ, and anyone else interested.

As I said very little work done yet.

john

6705russell · « **Reply #4 on:** July 18, 2012, 03:45:57 pm »

Now thats a novel idea John, well done

rmaddock · « **Reply #5 on:** July 18, 2012, 05:07:29 pm »

Super! It looks like you've carved it from some solid exotic nut.

john44 · « **Reply #6 on:** July 18, 2012, 06:39:14 pm »

SWMBO would agree that I am the nut.

john

john44 · « **Reply #7 on:** July 19, 2012, 10:18:12 am »

After reading some of the mixed reviews concerning MMD 555 & 777 motors
I dont think I will bother with them and I will look for an alternative.

john

big bill · « **Reply #8 on:** July 22, 2012, 09:36:58 am »

gday john , motors , you will find w 777 on 50mm props the Amps draw will be high, the 555 are a loverly motor , but onlly 4000/5000 rpm ,will drive 50 mm props , but not a lot of HP in reserve , i like the 555 ,in a slimmer hull , will go all day on one charge .
I stroungly recommend a 545 motor , running through a tooth belt g/box , 2.5/3:1 reduction , this will drive up to a 75/100mm prop , in my super springer , im fitting twin jaycar 545(2718) w 3:1 t/belt transmission , turning 65 mm brass scale props , this will provide enough thrust to water sky behind hull.
in Australia we are very limited to what motors we can get
regards bill s

Timo2 · « **Reply #9 on:** July 22, 2012, 12:17:34 pm »

Hi

From what i have seen "DARKE HORSE" Model & Marine Motors look a very good range from Australia

Timo2

P.S.

but John your twin hull look good for a pair of 555 on 12v ( 3 cell LiPo )

john44 · « **Reply #10 on:** July 22, 2012, 06:17:24 pm »

Cheers bill, timmo, I am going to wait untill i attend the boat show at Haydock next month
and see what I can pick up there.

john

big bill · « **Reply #11 on:** July 23, 2012, 09:13:58 am »

side note-
i may have the bull by the tail , but i tried too contact darke horse models at xmas , and did no good , so i guessed that he was no longer tradeing , has any-one got a contact for him ??
regards bill

john44 · « **Reply #12 on:** July 31, 2012, 12:48:24 pm »

Progress so far.

I havent decided what superstructure to use yet. Perhaps a Sea Helper workboat or something like that.
I dont think anyone has done that version yet.

john

6705russell · « **Reply #13 on:** July 31, 2012, 01:59:42 pm »

Very nice John, looking well....Give me a shout when you have time regarding this weekend....

Russ

Arrow5 · « **Reply #14 on:** August 03, 2012, 10:38:40 am »

A Spratamaran ?

john44 · « **Reply #15 on:** August 12, 2012, 07:45:31 pm »

Picture update,
Still WIP.

just a couple more,

What would you call it now arrow.

john

6705russell · « **Reply #16 on:** August 12, 2012, 08:14:32 pm »

Indestructible by the looks of it John!

Russ

john44 · « **Reply #17 on:** August 12, 2012, 08:56:30 pm »

Think I might call it(Indy) for short Russ, well it is a short boat.
Thanks for that one Russ, best name upto yet.

john

Arrow5 · « **Reply #18 on:** August 12, 2012, 10:16:52 pm »

Yep "Indy" sounds good

Hope to see it in rough water.

Tug Fanatic · « **Reply #19 on:** August 13, 2012, 08:18:16 am »

Which motors did you decide to use?

Very interesting.

john44 · « **Reply #20 on:** August 13, 2012, 09:53:46 am »

I ended up using 2 540s that 6705 Russ had spare.
They are not fast so should be o/k.
First trial Wednesday.
The rudders need finishing and the finish colors apllying
some more finger plate and job done.
I might add another esc and have the motors work independent.

john

john44 · « **Reply #21 on:** August 20, 2012, 10:49:52 pm »

Hi guys, the springer cat had her maiden voyage on Sunday she was excellent, instead of digging in on full
forwards she started to plane, which my fellow boaters thought was brilliant.
The maneuverability was very good indeed.
Arrow5, her stability in the rough water was a lot better than the mono hull, she just bobs up and down like a cork.
I will post photo,s after Wed, sail as I forgot my camera on Sunday.

john

john44 · « **Reply #22 on:** August 22, 2012, 03:37:18 pm »

Wed. photos

Note no digging in even at full throttle.

john

Martin (Admin) · « **Reply #23 on:** August 22, 2012, 03:41:19 pm »

Well done sir.... we want a wigio!

News:

Author Topic: new springer-cat build (Read 8353 times)