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Rat Fink II Razor - 9/9/2012 5:28 AM   
mistycreekboats


 

Posts: 682
Score: 105
Joined: 11/10/2009
Last Login: 6/19/2013
From: Prince George, BC, BC, CANADA
Status: offline 		Here is my version of my Rat Fink ......... part II
J&G
MHZ gear box
CC 1" Pipe
Twin HOR drives with SS prop shafts

will post as I finish - just need last pieces (Cables from Thomas) to finish

many little things I'll show in a while

designed to spin smaller props

anyway u get the idea

Thanks

Randy

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Randy Danchuk
Misty Creek Boats Canada

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RE: Rat Fink II Razor - 9/9/2012 7:46 AM   
jvdd


 

Posts: 128
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Joined: 6/27/2011
Last Login: 6/15/2013
From: Canberra, AUSTRALIA
Status: offline 		look very nice
can't wait for the vid.

jim


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RE: Rat Fink II Razor - 9/9/2012 8:07 AM   
Justaddwata



Posts: 5613
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Joined: 2/24/2005
Last Login: 6/16/2013
From: RI-USA, RI, USA
Status: offline 		someones been doing a whole lot of thinking and working!! Looking good Randy - be looking forward to updates on this one!

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RE: Rat Fink II Razor - 9/9/2012 3:12 PM   
lipdaddy


 

Posts: 121
Score: 100
Joined: 8/10/2008
Last Login: 6/12/2013
From: las vegas, NV, USA
Status: offline 		This is without a doubt one of my favorite boats! Great job.

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http://lipgensfabrication.com

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RE: Rat Fink II Razor - 9/10/2012 3:39 AM   
danielplace


 

Posts: 568
Score: 120
Joined: 12/28/2008
Last Login: 6/15/2013
From: Pompano Beach, FL, USA
Status: offline 		Gotta install a 57cc twin in front of the gear box and you'll be flying.

Really cool Randy. I love it.

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RE: Rat Fink II Razor - 9/11/2012 3:17 AM   
mistycreekboats


 

Posts: 682
Score: 105
Joined: 11/10/2009
Last Login: 6/19/2013
From: Prince George, BC, BC, CANADA
Status: offline 		Thanks for the compliments + Yes Daniel but the recoil would be under deck ........ maybe for part III

The Razor
  • (Rat Fink) is serial number 6 
  • it is 3 colors of green on hull
    • Candy Apple Green over white base for bottom
    • Candy Apple Green over metallic for Deck
    • Key Lime Green stripe and 3M Carbon Fiber stipe
    • Cleared 2 x and RF decal added
  • Hatch is made from 1/8" Baltic Birch and is Key Lime Green and 3M CF - the alum vents on rear open and weight very little
Drives come from HOR and stainless propshafts with square inputs come from PMB in UK
Props shown are 2 from MHZ and are 'starters' Billet Alum

Wing is made from sheet CF (The real stuff) with hand made alum brackets
The struts are 4/40 threaded rod with 4/40 ball joint ends and carbon fiber rod with shrink sleeve ends over the rod .  4/40 stainless bolts
The strut is adjustable to various angles

The Rudder is a 6" Speemaster with a custom made 'control arm block' - so I can have arms both sides
No water pu on rudder comes from hull
CF Rod supports the 4/40 rods to the rudder

The inside stuff tubes are 11/32 and are epoxied and glassed in the ends are cut to clamp the 5/16
The clamps are made from McMaster Carr clamps - resized to 11/32

The gearbox is a MH$ 1572
Width: 112mm (4,4")
Height: 48mm (1,9")
Weight: 19,33 oz (548 g)
Diamter inlet shaft to motor: 7mm
Gear up: 18,5%

I added 'fill level' hose (just mocked up for now) but added vent to top
I will look at box over winter as I think its kind of heavy

I used the MHZ box because the width of the 2 out put shafts lines up with rear spacing for drives and I don't have length to play with bending tubes .  This way makes the tubes almost straight to drives

Anyways thats todays

Cheers

Randy

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Misty Creek Boats Canada

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RE: Rat Fink II Razor - 9/12/2012 5:29 AM   
mistycreekboats


 

Posts: 682
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Joined: 11/10/2009
Last Login: 6/19/2013
From: Prince George, BC, BC, CANADA
Status: offline 		Had some nice cable (very well done - thanks Matho) come in today so did a little more

made some 't-bars' to go with clamps for front and made clamps for rear - should work

looks kinda like this

shows somewhat why I picked the MH$ box as keeps stuff tubes pretty straight ........ works for me on short boat



Cheers

Randy

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Misty Creek Boats Canada

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RE: Rat Fink II Razor - 10/15/2012 7:28 AM   
mistycreekboats


 

Posts: 682
Score: 105
Joined: 11/10/2009
Last Login: 6/19/2013
From: Prince George, BC, BC, CANADA
Status: offline 		Well few pics of some work
- I'm basically cheap so make my own stuff -

the servo box is from Tom at Expresscraft (HOR) - I changed to bolts thru bottom and MHZ 4mm Blue Knurled Nuts
- Battery is seperate as tubes take up bottom
- battery box seal is hi temp silicone - used to mount gear box too
- I ran gearbox for while but still not impressed - will need to look at over winter
- I made servo plate - mini t bars and battery box
- CC 1" pipe (I rewelded  changed angle) on TIG 
- Walbro 1048 - Ron Buck ss shaft and GZ cover

more to come cheers

hope to start on next weekend

Randy



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RE: Rat Fink II Razor - 10/15/2012 7:36 AM   
mistycreekboats


 

Posts: 682
Score: 105
Joined: 11/10/2009
Last Login: 6/19/2013
From: Prince George, BC, BC, CANADA
Status: offline 		couple more pictures

ps

Daniel I need me one of them Daniel Place "Killer SX Motors" 



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RE: Rat Fink II Razor - 10/24/2012 2:56 AM   
mistycreekboats


 

Posts: 682
Score: 105
Joined: 11/10/2009
Last Login: 6/19/2013
From: Prince George, BC, BC, CANADA
Status: offline 		couple pictures and Yep it run's

http://youtu.be/mok6Qtgl9Gw

TY 

Stock Zen for now - running out of time before ''hard water ''

RD

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RE: Rat Fink II Razor - 10/25/2012 6:20 AM   
mistycreekboats


 

Posts: 682
Score: 105
Joined: 11/10/2009
Last Login: 6/19/2013
From: Prince George, BC, BC, CANADA
Status: offline 		Well it floats - was very late and dark already. Split fuel line so ended after one trial run

It's a start anyways

D-m dog wouldn't stop barking sorry for sound

http://youtu.be/Wv2ygCGRB8Q




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RE: Rat Fink II Razor - 10/26/2012 6:42 PM   
crrcboatz


 

Posts: 365
Score: 100
Joined: 3/3/2003
Last Login: 2/27/2013
From: Oologah, OK, USA
Status: offline 		Was that full throttle?

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RE: Rat Fink II Razor - 10/26/2012 6:54 PM   
mistycreekboats


 

Posts: 682
Score: 105
Joined: 11/10/2009
Last Login: 6/19/2013
From: Prince George, BC, BC, CANADA
Status: offline 		No
Just  under 13000 rpm (SenDec tach)  and small 62 mm 2 blades and stock from the box Zen 26

 I discovered a split in fuel line after filled it two times  - boat was full of alot of gas (I have a cold and couldn't smell all the gas leaking seen puddle inside and wondered where water came from .. it was gas)  ....  explains why it wouldn't rev up

I ported a V2 J&G last couple night so I will try Saturday (already freezing and snow here so will be last time I'm sure)

Will try to pound it a little if I get to run .......... Might need snow shoes ........... LOl

Later Curt

Randy


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Misty Creek Boats Canada

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RE: Rat Fink II Razor - 10/26/2012 7:00 PM   
crrcboatz


 

Posts: 365
Score: 100
Joined: 3/3/2003
Last Login: 2/27/2013
From: Oologah, OK, USA
Status: offline 		Hey good Randy. That thing is one of my favorite builds EVER to keep up on. U have done a super jog as always. A JG should get it done with 2 props. Is the dual drive a gear up unit? By that I mean say a ratio of 1/1.25 or is it 1/1? Where did u find the drive unit? Like to try that myself on a larger boat.

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RE: Rat Fink II Razor - 10/26/2012 7:32 PM   
mistycreekboats


 

Posts: 682
Score: 105
Joined: 11/10/2009
Last Login: 6/19/2013
From: Prince George, BC, BC, CANADA
Status: offline 		Curt
 18% overdriven - running through set 62 mm ..... I have 3 sets of small 2 blades and two sets of small 3 blades to try - idea is to try to spin two smaller props at higher rpm

 so if I can get say 18 or 17, 500 from engine  then I get around 21, 000 at props ....... Well see how she goes I need to play with gear box and change to some ceramic sealed bearings (to cut leaks out) and need to machine some excess weight out of the box.

Later Bud

Randy

the gearbox

http://shop.mhz-powerboats.com/IC-Engines/Gear-Box/Gear-Box-with-Square-Shaft.html




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Misty Creek Boats Canada

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