preservedkillick Posted April 6, 2014 Share #1 Posted April 6, 2014 Haven't posted in here since the forum's previous incarnation, but starting a large new build, so here goes.... I've previously completed a static display HMAV Bounty in 1:64, and have the completed hull of a (huge!!) 1:64 Agamemnon on the shelf Unexpected windfall and a hankering to have a go at R/C sidetracked me (again!) in the direction of this kit. I wanted something Naval (ish) and at a decent scale, as I like lots of detail. After a bit of research and "umming and ahhing", plumped for Caldercraft's "Resolve", which fits the above bill, and both my static builds are Jotika/Caldercraft jobs, so I know and trust them. Excellent service from Cornwall MB, as ever on delivery of the box. Size was no surprise, as it has to have a single piece hull in there somewhere, which "aint going to be small" at this scale. Well packed, as ever - quantity of contents not too scary, as Agamemnon is considerably more complex. Spent a good week (of available time) checking the contents, especially the enormous number of castings - only found two small problems (one missing porthole, and a couple of brake drums that clearly are a different part), which I shall need to get onto CMB about - not bad really - I think packing that lot would drive me nuts ! Also invested in the "Tugboat Book", which has a review of a build of this kit by Brian Peach - I think I'm going to need all the help/clues I can get on this one ! Next spent a day or two researching and head scratching over power plant, R/C etc. - never done any R/C so all new to me (which is partly the point). Steam would be nice, but *way* too pricey (the windfall wasn't that big !), so electrickery it is. There is virtually *no* guidance in the manual on powerplant, coupling, props beyond "its designed for twin Decaperms and you can buy a complete add-on kit", however these motors seem to be outrageously expensive. My one-and-only-reference (Brian Peach) used 65mm props on his build - looks a bit big to me, so I opted for 50mm - learning in the process that the props on a twin screw rotate in opposite directions so have to be "handed" Looked into brushed vs brushless motors - brushless, though generally lower cost, seem to be for the powerboat fraternity and revving much too fast to direct drive props on a tug. Useful chart on Raboesch site giving max RPM against prop size suggested 7000 max for 50 mm props. Either gearing down brushless, or using a geared motor would be options. Not comfortable with trying to construct some sort of reduction gearing, so eventually plumped for MFA Torpedo 800's, which whilst still not cheap, do come with mountings. These are 12V nominal Batteries is a whole other issue - NiCd, NiMH,LiPO or good 'ol lead-acid ? Lead-acid for now as its low cost - will see how it goes Decided budget would stretch to Electronic Speed Controls - twin Viper 15's. Whilst my trade is electronics, I'm not keen to spend too much spare time on it (spare time is for modelling !), so off-the-shelf it is. Briefly looked into controlling both motors from a single ESC, but there are a few horror stories out there, so I've gone for two. Next problem - how to actually physically connect motors to propshafts (the shafts are the only bit of the drivetrain that actually come with the kit) - lots of things called "coupling inserts" available - took a while to realise these are meant to go into some kind of miniature universal joint (I told you I was new to this...) - apparently something as simple as a piece of suitable rubber tubing can also work, but I don't fancy it at 5000 RPM :-o Finally a suitable RC system - a Futaba 3PRK with two proportional channels and a third on/off switch channel. I might want to upgrade to something with more channels if I get into controllable sound and lighting in the future, but this will do for now Phew! Unfortunately I commiited the cardinal sin at this point of ordering all the above running gear (about £250 worth all told) from a supplier I had not previously used - Westbourne Model Centre. Sadly they failed to so much as acknowledge the order, and when I checked on the web, there are some quite adverse comments about them. After several days, and multiple unanswered emails, I eventually telephoned them, cancelled the order (which they'd apparently been sitting on due to the RCS being out of stock), and re-ordered the whole lot from CMB (who acknowledged immediately, as I would expect, and the whole lot is currently in transit via tracked UPS for delivery tomorrow). Anyone else have trouble with Westbourne recently ? Wouldn't want to flame them based on one bad experience, but failing to even acknowledge an order is unique amongst suppliers in my experience, as is utterly ignoring emails. The moral is - if you haven't used a supplier before, place a *small* order first, and see what happens - guess I got blase about web ordering - never had this sort of problem before. Lesson learned. Quote Link to comment Share on other sites More sharing options...
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