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Search: Posts Made By: DesignMan
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09-10-2010, 01:52 AM
Replies: 6
Views: 1,917
Posted By DesignMan

RE: 1/2A Snapper earliest date?

I have a kit from Minnesotamodeler, and plans are available from Barry Baxter ( bareneked.com) . So documenting the model is no problem, only establishing the date of the design to make it clear if...
09-08-2010, 10:18 PM
Replies: 6
Views: 1,917
Posted By DesignMan

RE: 1/2A Snapper earliest date?

Yes, I have the plans for the Reinhardt one, but a KIT for the good one from Southwestern. :D
09-07-2010, 10:55 PM
Replies: 11
Views: 3,331
Posted By DesignMan

RE: Teeny Valentine Diesel

Thanks, guys. I kind of figured the Cox .010 prop or cut down .020 props would work. I have run a 4.5x2.5 cut to 4" on my Bambi .009, but the Valentine is rated to turn over 20K, so I figured I'd...
09-07-2010, 11:46 AM
Replies: 11
Views: 3,331
Posted By DesignMan

Teeny Valentine Diesel

I have this .0061 Diesel from Valentine motors. I am wondering what prop it will swing. Anyone out there with experience on this size engine?
09-07-2010, 10:58 AM
Replies: 6
Views: 1,917
Posted By DesignMan

1/2A Snapper earliest date?

I am trying to find the earliest date that Southwest Models 1/2A Snapper existed. Anyone out there have information on this? I had one in 1956, but I am hoping it existed before Dec. 1952, so it...
Forum: RC Sailboats
08-12-2010, 09:30 PM
Replies: 9
Views: 2,126
Posted By DesignMan

RE: Keel question

I think you didn't read my entry carefully enough. I HAVE 5/32" stainless rod which is .156 compared to .1575 for 4mm. It fits perfectly with no noticeable slop, and I have successfully tapped it...
Forum: RC Sailboats
08-09-2010, 11:13 PM
Replies: 9
Views: 2,126
Posted By DesignMan

RE: Keel question

OK, I have the Stainless rod in hand if anyone wants some. I tried threading it today, but the cheezy Chinese die turned out not to even handle soft Aluminum. I will go get the real McCoy of a die...
Forum: RC Sailboats
08-06-2010, 12:56 AM
Replies: 9
Views: 2,126
Posted By DesignMan

RE: Keel question

I haven't found 4mm Stainless rod, but I did score some 5/32" which is within .002" of 4mm! I have 6 feet of it coming (about $15, so not too bad). If anyone needs some, I will sell it for $3 a...
Forum: RC Sailboats
08-03-2010, 09:38 AM
Replies: 9
Views: 2,126
Posted By DesignMan

RE: Keel question

Again, thanks for the input, guys! Yes indeed, water ain't air, and that is why I am asking questions. If it was an airplane, I would already know the answers. The dynamics and hydrodynamics of...
Forum: RC Sailboats
08-02-2010, 08:16 PM
Replies: 9
Views: 2,126
Posted By DesignMan

RE: Keel question

Thanks for the input, but I am asking about the shape of the keel, not the ballast. My ballast is a torpedo shaped, 16 ounce fishing weight, so that is fixed. I want to know about the area...
Forum: RC Sailboats
08-01-2010, 05:46 PM
Replies: 9
Views: 2,126
Posted By DesignMan

Keel question

I am building a new keel for an Aquacraft Paradise. The original keel has about .7 taper ratio. It seems to me that having even more of the area up near the hull will tend to give better "lift"...
Forum: RC Sailboats
07-19-2010, 11:01 AM
Replies: 13
Views: 5,800
Posted By DesignMan

RE: Aquacraft Paradise - modifications

What did the extra ballast do to the floatation? Is there enough hull displacement to leave a good margin?

Also, has anyone tried to make better sails for this boat? The stock ones seem to be...
12-10-2005, 09:31 PM
Replies: 17
Views: 2,689
Posted By DesignMan

RE: Galbreath head and Nelson plug questions

I have done comparison testing of the Galbreath/Nelson combination and find it better in every way than any other plug/head combination on every engine tested. I am SOLD on this combination. I even...
Forum: Control Lines
12-10-2005, 09:21 PM
Replies: 23
Views: 2,316
Posted By DesignMan

RE: Diesels for controline?

My experience with diesels in CL is pretty extensive. I campaigned a Super Clown with an OS 25fp/Davis conversion. I was very satisfied with the performance, but never conquered the variability...
Forum: Control Lines
09-13-2005, 10:56 AM
Replies: 22
Views: 2,618
Posted By DesignMan

RE: Magician

For those of you who want to build the Magician, buy the plans for the 1/2A Magician from Flying Models and scale it up to .35 size at your local copy shop. The version I published is Classic Legal...
Forum: Glow Engines
08-25-2005, 06:07 PM
Replies: 17
Views: 1,334
Posted By DesignMan

RE: Nitro - hotter or colder run?

An excellent site. However, I don't have much clue as to the nitro content of the various fuels. Did I miss that somewhere?
Forum: Glow Engines
08-24-2005, 03:55 PM
Replies: 17
Views: 1,334
Posted By DesignMan

RE: Nitro - hotter or colder run?

The Hampton information is great stuff, but still just numbers on paper. What I am after is real, measured temperatures with a real engine. Guess I'll have to do the real-life testing myself!

...
Forum: Glow Engines
08-24-2005, 12:40 PM
Replies: 17
Views: 1,334
Posted By DesignMan

Nitro - hotter or colder run?

A rather knowledgable friend of mine contends that higher Nitro content makes an engine run cooler. His argument is that you are running more fuel through the engine, so it has better heat...
08-18-2005, 12:37 PM
Replies: 27
Views: 4,336
Posted By DesignMan

RE: Cox .049 Killer Bee and TD .09 SALE

The only timing difference on the KB was that we added sub-piston induction to the slit exhaust cylinder, and as I recall, it had the extra bypass flutes too. I would have to haul one out and look...
08-18-2005, 12:25 PM
Replies: 6
Views: 1,579
Posted By DesignMan

RE: New (non-Wankel) Rotary Design

OK, how about making the vanes two parallel panels sprung to slide towards the ends. Only one edge of each panel hits the cylinder wall and the spring is centered by the tracking pin. You now have...
08-16-2005, 05:44 PM
Replies: 27
Views: 4,336
Posted By DesignMan

RE: Cox .049 Killer Bee and TD .09 SALE

The only Cox engine that ever had a higher power to weight than the Tee Dee .09 was the Conquest .15, but then it was a flat-out ball-bearing, Schneurle fire-breather. The Tee Dee .09 at the current...
08-16-2005, 05:40 PM
Replies: 27
Views: 4,336
Posted By DesignMan

RE: Cox .049 Killer Bee and TD .09 SALE

The Medallion .09 is an excellent engine, and the sleeve throttle works well. Use it if you can get away without a muffler.
08-16-2005, 05:39 PM
Replies: 27
Views: 4,336
Posted By DesignMan

RE: Cox .049 Killer Bee and TD .09 SALE

I really hate to tell you this, but the Killer Bee as sold currently is essentially the same as the Sure Start. No "Killer Crank", no taper grind to the piston and cylinder, probably no high...
08-16-2005, 12:39 PM
Replies: 6
Views: 1,579
Posted By DesignMan

RE: New (non-Wankel) Rotary Design

You can avoid the binding problems by simply having each vane be 2 pieces, sprung apart in the center. They will allow float to cover the manufacturing tolerances.
08-12-2005, 12:23 PM
Replies: 1
Views: 605
Posted By DesignMan

RE: diesel/glow fule resistant paint

So far as I know, Minwax "Helmsman Spar Varnish" is totally fuel proof. It will at least stand up to high nitro. I guess I haven't tested it with diesel. Should be OK, though.

I use it as an...
Showing results 1 to 25 of 280
 


 
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