Search found 28 matches

by lraymond
Wed Nov 06, 2013 9:34 pm
Forum: Power Boats
Topic: 200hp Zip....sort of.
Replies: 20
Views: 4135

Re: 200hp Zip....sort of.

Yep, batteries have a long way to go...but when they get there I'll be ready :)
Priced out a new outboard lately though? It's getting out of control! $15,000 for a new 200hp mercury verado? Robbery I say...
by lraymond
Tue Nov 05, 2013 12:07 pm
Forum: Power Boats
Topic: 200hp Zip....sort of.
Replies: 20
Views: 4135

Re: 200hp Zip....sort of.

Not sure what a new outboard costs but for 5k I got a new motor, new controller and enough A123 battery modules out of a wrecked eV sports car with 3000 miles for 2+ packs the way I have it configured. But I got an amazing deal on the batteries. Replicating this pack in new cells would cost a ton I'...
by lraymond
Mon Nov 04, 2013 7:41 am
Forum: Power Boats
Topic: 200hp Zip....sort of.
Replies: 20
Views: 4135

Re: 200hp Zip....sort of.

Mostly just very determined :). I actually got many ideas from your build Chris so thanks, very nicely done. I thought briefly about an electric outboard at one point...I converted an 8hp evinrude to electric (video on youtube) and it works great. The torque of an electric motor just can't be beat f...
by lraymond
Sun Nov 03, 2013 6:16 pm
Forum: Power Boats
Topic: 200hp Zip....sort of.
Replies: 20
Views: 4135

Re: 200hp Zip....sort of.

I had the hardest time finding a design that seemed right. All the inboard styles I could find just seemed a bit to beamy for my taste. I kept coming back to Zip and its classic lines but it was a bit too small for an inboard. So I finally decided I would just go for the Zip plans and wing it :). Th...
by lraymond
Sun Nov 03, 2013 12:01 pm
Forum: Power Boats
Topic: 200hp Zip....sort of.
Replies: 20
Views: 4135

Re: 200hp Zip....sort of.

The motor is a netgain warp 9 which weighs about 150lbs and is often used in ev drag racing. The motor controller is a zilla 1000amp controller. For example the below car uses 2 impulse 9 motors, a smaller version of the warp 9: http://www.plasmaboyracing.com/whitezombie.php So far its looking like ...
by lraymond
Sat Nov 02, 2013 5:51 pm
Forum: Power Boats
Topic: 200hp Zip....sort of.
Replies: 20
Views: 4135

200hp Zip....sort of.

I finally finished my boat based loosely on the Zip design. The underwater profile is very similar to a zip although it has been stretched to 16 feet. Above the waterline was tweaked quite a bit. Power is via an inboard electric motor capable of producing 200hp. It has about twice as many frames as ...
by lraymond
Tue Oct 02, 2012 12:22 pm
Forum: Small outboards
Topic: Zip performance Video
Replies: 15
Views: 3615

Re: Zip performance Video

Nice build Ted! I'm working on a version of zip myself and am located in Ann Arbor. I know Travis on this forum is working a zip and lives in the southeast michigan as well. We might have to have a zip get together next summer or maybe our own little gathering... I bet 34 feels fast that low to the ...
by lraymond
Fri Aug 03, 2012 10:15 pm
Forum: Electric Power
Topic: Golf Cart Motor overheating
Replies: 18
Views: 19507

Re: Golf Cart Motor overheating

Also ev builders sometimes use a blower to force air through the motor by placing a custom band around the inlet ports with great results. Not sure if your blower is currently blowing air through or simply around the motor. If your motor has separate inlet and outlet ports for air like mine this mig...
by lraymond
Fri Aug 03, 2012 10:00 pm
Forum: Electric Power
Topic: Golf Cart Motor overheating
Replies: 18
Views: 19507

Re: Golf Cart Motor overheating

This is Luke, building the electric planing boat. I finished attaching the copper to the motor and will post some pics soon. Good contact is definitely going to be important I think...I tried this method on a golf cart motor on a lawn mower years back and didn't get much cooling due to the round pip...
by lraymond
Thu Aug 02, 2012 7:32 pm
Forum: Power Boats
Topic: 16' double cockpit mahogany inboard runabout-electric
Replies: 8
Views: 2661

Re: 16' double cockpit mahogany inboard runabout-electric

Thanks for the support guys. Its been a longer project than I hoped and its been easy to be discouraged lately another summer flies by. I finished all the rough sanding of the deck today and put the cooling jacket on the motor with conductive epoxy (I mixed in atomized copper) which seems to work pr...
by lraymond
Wed Aug 01, 2012 8:34 pm
Forum: New Members, Please Introduce Yourself
Topic: Bullet build. What material to use for framing
Replies: 16
Views: 3473

Re: Bullet build. What material to use for framing

I used mahogany as well and the boat was amazingly light until I put the white oak motor stringers in :). I used white oak in locations that will take the most stress and I can tell you that working with mahogany is much nicer. The oak is so ridiculously strong though. No problem mixing to have a hy...
by lraymond
Wed Aug 01, 2012 8:22 pm
Forum: Power Boats
Topic: Builder's experience with clear fiberglass layer
Replies: 9
Views: 1682

Re: Builder's experience with clear fiberglass layer

Cool. It would be nice to not have to mess with the fiberglass on the deck at least. I would think the mahogany and teak should be pretty stable. Did you use mahogany for the planks of your deck chris?
by lraymond
Wed Aug 01, 2012 8:07 pm
Forum: Power Boats
Topic: Horsepower required vs. speed
Replies: 5
Views: 2124

Re: Horsepower required vs. speed

Nice. People have found the formula to work within single digit percentage accuracy once hull number is obtained (below 50 knots at least). Anyone with an inboard have weight and speed data? Maybe a crackerbox?
by lraymond
Wed Aug 01, 2012 8:02 pm
Forum: Small outboards
Topic: Shortened TNT
Replies: 3
Views: 1129

Re: Shortened TNT

Hi arcadius, I built the clark craft racing ok design with my grandfather about 20 years ago and it is an amazing little boat. I have a 15hp mercury on it and it its fast and extremely stable. I have never been able to flip it even with full lock turns at wot..although I did throw my cousin out once...
by lraymond
Wed Aug 01, 2012 2:56 pm
Forum: Power Boats
Topic: Builder's experience with clear fiberglass layer
Replies: 9
Views: 1682

Re: Builder's experience with clear fiberglass layer

Thanks guys thats really helpful. Im now leaning toward 4or 6 oz on the sides and nothing on the deck. The sides would be easier and they might take more abuse. they are also not as close to your eye so they dont have to be quite as perfect. The only thing that worries me is checking. I built a kit ...