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Hi Kim,Another thing that may be relevant is the number of floats per wheel...I have a set of 1:48 wheels from Waverley Models, I purchased them when they came on the market several years ago.These wheels have 9 floats, and I personally feel that is to many, and the wheels look to "busy", or cluttered.
I am going to use the rims as a kind of template and make 7 float versions for my "Marchioness of Lorne" model, maybe try plastic or thinner brass or aluminium sheet, I want my wheels as light as possible.This is not a criticism of the Wav. Models wheels, just personal preference for 7 floats (as the real ship had) and a lighter wheel.
Hi Kim,A few comments based on my own experience, no doubt some will disagree, but these are my feelings on the matter....
Scale - Certainly in the UK, 1:32 or 1:48 are the most popular scales to build at.
Rimless or rimmed - If designed carefully, a rimmed wheel can have the outer rim cut off to produce a rimless wheel, saving the cost of manufacturing both types.
Feathering or none feathering - At model sizes feathering makes little if any noticeable difference in performance, but a feathering wheel does look good.... A none feathering wheel with dummy feathering mechanism available as an extra would again save costs and complexity.
Cost - There is a lot of wasted material when producing a paddlewheel, so cost is always going to be an issue. An average screw boat with twin props may cost £30 or £40 for two nice cast props, and your never going to compete with that for two paddlewheels! But you do need to keep costs to a minimum or you'll never sell any!Just my two-penneth worth, so don't shoot me down in flames!RegardsEddy
Well - my two pence worth!
Every time I make a set of wheels they are scale ones to suit one particular ship and no other. The present set will have 14 floats - disasterously innefficient, but SCALE. So being absolutely true to scale is number one for me, and if the real vessel had feathering floats then that's what I'd make. BUT, and it's a big but, commercially available wheels, especially for a working model would tempt me.
I have to say that I have often wondered whether it would be possible to produce a set of components in kit form and vary them according to the wheel required. For instance a universal hub to accept 6, 8, 10 or 12 spokes. Spokes of say two patterns in various lengths. Wheel rims of various diameters etc. Then one could vary the contents of the 'kit' to produce many different wheels. Material waste would be minimal because one could use the waste say from the rings to produce spokes or other components..
PVC or ABS would be an ideal material to make the components from and certain components like paddle float arms and trunnions could be standard but one could offer perhaps 3 different paddle float sizes. Once the initial design had been worked out production would, I think be relatively straightforward..
Just some thoughts. Stuart
Kim,I have to admit that I've thought about producing paddlewheels myself many times, but my own opinion is that it could only be viable if I bought my own laser cutter (expensive!) and wrote off that cost, perhaps by producing other items to make it pay for itself?.
Your never going to sell huge volumes of paddlewheels, even though it's the one item that puts most people off building a paddler!.
Having said that, Graupner have sold thousands of their wheels - But at approx 1:40 scale they are too big for some models, and not big enough for others!! Why did they pick that scale? It's beyond me!!!.
Barry in Oz has produced some great styrene wheels - I know I bought a set from him, and was more than happy with them, but I think even he will admit that demand isn't fantastic. Yes you can make some money with the right product, but your never going to be a millionaire!
I have a paddletug that I'd like to build, and I'd be the first to buy a set of paddlewheels from you if the right ones were available, but I do want to be realistic, and not say that there would be a huge demand when there wouldn't!
I'm sticking my oar in here where I should fear to tread. Over the years there has been quite a bit of success with photo etching/chemical milling and there is an entire aftermarket for model airplane builders and recently model ship builders. I am assuming some are familiar with this process. Fr Prasky the Austrian modeller and engineer wrote an article in Model Shipwright, there are several in the American journal Nautical Research Journal and Brian King from the UK wrote a very good chapter in Modelling Late Victorian Warships on the "wonderfulness" of photo etching. The value lies in the fact that one only needs on set of drawings duplicated n number of times on a sheet of brass via a photo transfer that is made but the chemical miller, and voila. The cost as I understand it is not prohibitive and a sheet of brass could contain several variations and or scales. King also wrote a smaller book on photo etch and another chapter in Advance Ship Modelling. Where laser and cnc require doing one part at a time, etching does an entire sheet in 15 or 20 minutes depending on the thickness of the brass and the speed of the etchant. This is an idea that can certainly be shot down , but you'll need a 12 pounder at least.
Hi all,Photo etching is an oft overlooked resource by most modellers, unless interested in very small scale building.Photo etchers can etch upto at least 1mm, just have to allow for the undercut when doing your artwork, same as you have to allow for the width of the cut for laser work. Also can part-etch designs into the surface at the same time.Well mentioned greateasterncheerskiwi