RE: Scratch Build - 29" Balsa Stepped Cat  
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RE: Scratch Build - 29" Balsa Stepped Cat - 5/4/2008 8:17:42 PM   
detox



Posts: 191
Joined: 4/21/2008
From: Oxford, GA, USA
Status: offline 		Spraying the thin CA will take your breath away literally, so spray it outdoors. After applying your thin fiberglass cloth with 3M spray tack adhesive spray on the CA using your paint sprayer much like paint (CLEAN GUN WITH ACETONE AFTERWARDS). The capillary action of the superglue with make boats surface very hard so make sure surface is smooth because it will be hard to sand afterwards. Fill, prime, sand, then paint.

< Message edited by detox -- 5/4/2008 8:19:24 PM >

(in reply to SV27dayton)
       Post #: 101

RE: Scratch Build - 29" Balsa Stepped Cat - 5/19/2008 1:20:15 AM   
SV27dayton



Posts: 1371
Joined: 12/28/2006
From: Centerville, OH, USA
Status: offline 		An up date: Armor plating is complete. The boat is ready for water proofing and then hardware. The rudder is going to run deep, and I think she'll like that. Any one know a good place to pick up some steering rod and bellows? I need to do this right as I expect the bellows to be 1/2 submerged when the boat is idle. I have the servo and reciever and will order the motor soon, and the SC when I get back from china.

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       Post #: 102

RE: Scratch Build - 29" Balsa Stepped Cat - 5/20/2008 1:39:00 AM   
SV27dayton



Posts: 1371
Joined: 12/28/2006
From: Centerville, OH, USA
Status: offline 		Stopped by the UPS store today with the hull. It's 476 grams (just over a pound). It will be intresting how much weight the urithane will add. Funny thing: It was breazy out when I went in there and the wind came close to twisting it out of my hand I'm not too upset with the weight. I have a feeling the SV will doing some recovery duty.

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Scott Custom Graphics (vinyl graphics for your boat)
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       Post #: 103

RE: Scratch Build - 29" Balsa Stepped Cat - 5/20/2008 2:03:10 AM   
SV27dayton



Posts: 1371
Joined: 12/28/2006
From: Centerville, OH, USA
Status: offline 		How big of a difference would i see between other wise identical setups between an 8XL and a 9XL. Looks like a 200rpm/volt difference, what else can I expect? I can get the 9XL for about 20 bucks cheaper.

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       Post #: 104

RE: Scratch Build - 29" Balsa Stepped Cat - 5/20/2008 1:11:30 PM   
ryan_t888



Posts: 4311
Joined: 7/24/2005
From: Hamilton, ON, CANADA
Status: offline 		Run the 9XL on 5s and that hull will sing! No more NiMh right?!?!

Ryan

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       Post #: 105

RE: Scratch Build - 29" Balsa Stepped Cat - 5/20/2008 2:01:15 PM   
SV27dayton



Posts: 1371
Joined: 12/28/2006
From: Centerville, OH, USA
Status: offline 		No probably not. I'm thinking of making the jump to Lithium with this boat. I may run it on 12 cells for some testing but Lipo is the future. Why do you ask? 9XL going to hurt the Nimh batts for some reason? Saw OC's old mean machine doing 55mph with a 12XL so I'm a bit scared as to what I'm going to end up with here.

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       Post #: 106

RE: Scratch Build - 29" Balsa Stepped Cat - 6/4/2008 2:02:33 AM   
wlrottge


 

Posts: 4
Joined: 3/16/2004
From: Montgomery, AL, USA
Status: offline 		Ok, so I'm soooooo going to ask a noobie question.

I got a copy of the originals for this boat (the original shockerman plans). They're in PDF. I have access to a plotter at work... how did you get them to print full size?

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       Post #: 107

RE: Scratch Build - 29" Balsa Stepped Cat - 6/4/2008 3:27:27 AM   
dicko



Posts: 2520
Joined: 2/4/2004
From: Adelaide, AUSTRALIA
Status: offline 		Set your page size to A0 and send it to the plotter. It works for me with our plotter. If you forget to reset the page size it comes out A4 though.

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       Post #: 108

RE: Scratch Build - 29" Balsa Stepped Cat - 6/4/2008 3:49:05 AM   
wlrottge


 

Posts: 4
Joined: 3/16/2004
From: Montgomery, AL, USA
Status: offline 		THANK YOU!!!!

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       Post #: 109

RE: Scratch Build - 29" Balsa Stepped Cat - 6/4/2008 4:08:14 AM   
SV27dayton



Posts: 1371
Joined: 12/28/2006
From: Centerville, OH, USA
Status: offline 		I have a plotter at work too. I took the 8.5 x 11 to kinkos and had them upsize it until I was happy. Cost me $0.80. Then I physically modded the cross beams with scisors and glue. I know I'm slow but I am working on it.

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RE: Scratch Build - 29" Balsa Stepped Cat - 6/5/2008 6:17:47 PM   
wlrottge


 

Posts: 4
Joined: 3/16/2004
From: Montgomery, AL, USA
Status: offline 		I started the build last night. This is my first 100% scratch build and I've already got a second build planned (1/10th crackerbox).

I'm learning a LOT very quickly a/b how and how not to cut balsa. Any tips?

I'd love to find a scratch builder tutorial/primer out there.... too many little nuances...

(in reply to SV27dayton)
       Post #: 111

RE: Scratch Build - 29" Balsa Stepped Cat - 6/5/2008 7:25:09 PM   
jdoug


 

Posts: 1284
Joined: 1/18/2005
From: Nampa, ID, USA
Status: offline 		I use a scroll saw for cutting all the wood I use for boats. Works perfect. A little tip on cutting out your parts...I always cut a little oversize and sand the rest. Then, if there is a matching peice, clamp together and sand until it is the same.

(in reply to wlrottge)
       Post #: 112

RE: Scratch Build - 29" Balsa Stepped Cat - 6/6/2008 1:41:21 AM   
SV27dayton



Posts: 1371
Joined: 12/28/2006
From: Centerville, OH, USA
Status: offline 		I probaby didn't do it the easiest way. I printed the drawings to size. I taped all the parts down and used a needle to make a dotted line to show me where to cut. Removed the prints and cut everything with a modelers knife. Like Jdoug said, cut oversizded and sand. Balsa sands very quickly with 220. I glued the whole frame together and then sanded all the intersections until everything was even. Another tip is to sand the angle on the stringers especially up front. I used alot of CA. I bought an oz of great planes Medium (any thiner and it will run too much). Anyway I had to get more. I'd take your time and finish this one before you start the next. You'll learnd soo much on the first one and the second will be better as a result. Later

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RE: Scratch Build - 29" Balsa Stepped Cat - 6/10/2008 6:08:01 PM   
wlrottge


 

Posts: 4
Joined: 3/16/2004
From: Montgomery, AL, USA
Status: offline 		Yeah, I did it the hard way as well. I glued them to my balsa then cut them out with a dremmel.

I have started the skinning and will post some pics soon.

I think (not sure) that I'm going to put glass or carbon on it instead of ply.... carbon would look coolest

(in reply to SV27dayton)
       Post #: 114

RE: Scratch Build - 29" Balsa Stepped Cat - 6/11/2008 6:54:22 AM   
SV27dayton



Posts: 1371
Joined: 12/28/2006
From: Centerville, OH, USA
Status: offline 		Wow that would look cool.

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RE: Scratch Build - 29" Balsa Stepped Cat - 6/23/2008 12:51:28 PM