Tuesday, July 14, 2009

Why do so many companies have trouble with tracks?




Tracks... All armoured vehicles over a certain weight have them. They come in endless styles, narrow ones, broad ones, cleated tracks, padded tracks, live track, dead track... Amtracks with ‘swimming grousers,’ Shermans with ‘snow grousers,’ Panzers with Ostketten. The fascination with modelling tanks brought with it the challenge of companies producing realistic tracks, and most modellers would say they’ve never really achieved 100% accuracy no matter what approach they’ve taken.

There are traditional flexible vinyl tracks, single-piece, to be joined around the running gear, and they do a generally good job. In the early 1970s they tended to be poorly detailed and possibly undetailed on one side, though today molding technology and computerised machining of the molds means they can be highly detailed both sides. The ones above are from Tamiya’s 1:35th scale King Tiger, Ardennes. The drawback is that the relative stiffness of the vinyl means the tracks don’t develop a sag between the return rollers, or lie along the top of large diameter wheels, like real tracks do. 
 



 Then there are individual-link or link-and-length tracks, which call for cleanup and assembly. For some modellers these are the best, though for others they are a nightmare whose tedious nature more than forgives the lack of sag in the vinyls. Above are the indie links made by Academy to compliment their issue of the early Tamiya Panzer IV-derived tanks (all the models on the box are of Tamiya origin). And below are ModelKasten’s set for the above-mentioned King Tiger. 



If sag is your thing, Trumpeter got ambitious a few years ago and produced superbly machined link-and-length tracks for their KV-1 series of kits in which the sag over the return rollers was molded right in, and even the most die-hard anti-L&L builder must feel tempted by these amazing pieces of injection work:  



Then come the workable tracks from AM companies, whitemetal, plastic or resin with wire pivots taking the place of the real track bolts, and which will hang, sag and roll like real (dead) track -- for a price.  



Dragon came up with Magic Tracks, a soft styrene type in which the links click-fit and will hold their shape until you can hit them with liquid cement, lending themselves to being shaped to any configuration of suspension. This is a neat idea and probably the most innovative. Vehicles with skirts tend to make that perfect hang and sag of the return length superfluous though: you can’t see it, so why sweat blood on it? And tight tracks don’t sag anyway. But tightness raises the question of why some companies don’t seem to be able to get it right in the most profound sense. 




I’m talking about early Trumpeter. I was really attracted to the Chinese Type 89 tank Destroyer, and was building along quite satisfactorily -- until I came to the tracks. They were half an inch too short (below) to link up around the running gear, and no amount of coaxing was going to change that: snapping off the portside idler wheel convinced me to give up. I tried heat treatment, stretching them by heating them with a hair drier, and hanging them with weights, but after half a dozen exhaustive treatments, using all the heat my hands could tolerate, one track had grown about one link’s worth, as the vinyl shrank again upon cooling. I was fed up and shelved the project. That late-mold Tamiya StuG III I reviewed last time was both a pleasure and a relief to build instead.
 



 Of course I didn’t give up entirely. The Type 89 shares the same chassis with the 122mm MBRL and the Type 83 SP artillery, I have them all, and all I would need is a single extra length of track to complete them. Cut out a few links and splice them in with superglue and thread as necessary, and suddenly the tracks will go round the running gear and meet as they should. I emailed Trumpeter, seeking to buy a spare length of track, got a reply asking me to forward photographs of the parts involved... Then nothing. Hey, I tried, but their aftermarket support at this point is as dodgy as their English, which is curious given their truly ambitious products and their dedicated assault on the affluent end of the Western marketplace. Their more modern products are of higher quality, I would certainly hope the tracks are the right length given the price they charge for their new armour.

And what about Dragon? That other Chinese company often considered to have eclipsed Tamiya as king of 1:35th scale? Early Dragon is beset by far too many microscopic parts which vanish into the carpet, and by the sort of over-thought engineering that has Dragon airplane models glide into waist bins beside the benches of grown modellers sobbing with frustration at their sheer unfriendliness and inaccuracy of fit. This is the antithesis of Tamiya’s philosophy, and while Tamiya’s earlier products may not be acceptably accurate or sufficiently detailed for today’s more mature taste, you can mostly rely on them to build well. “Buildability” was Mr. Tamiya’s watchword, and is sure to have contributed to the company’s historic success.




My only experience with early Dragon is in the reboxing of their classic Russian armour models when the molds were obtained by Zvezda. Their BTR-70 built fine, only a few grab handles needed to be replaced with brass because they broke before I could remove them from the sprue (because the parts were finer than their sprue attachments!) But their T-72 is another matter. It may be Zvezda’s plastic: the link and length tracks are brittle and the plastic really does not like to react with superglue (a bit like Chinese plastic in that respect). Thus trying to piece those tracks together promised to be an exercise in frustration. The Zvezda T-72B with Explosive Reactive Armour is easily the most detailed tank model I have ever built, and it sits unfinished in its box because there is no way I’ll mess around with that job, and the only AM T-72 tracks I can locate are far more expensive than the kit was. My prayer, thrown to the gods of styrene, is that AFV Club will finally produce high quality vinyl replacements in their expanding range of sell-alone tracks.

Which brings me back to my lament, why can’t companies with all the expertise and the million-dollar computer-assisted design and manufacture, get the tracks right? Properly detailed, that fit the sprockets exactly, articulate with each other, and take a realistic paintjob? If it has to be link-and-length, then the plastic had better respond well to glue, you certainly can’t stitch them together. And if they’re vinyl then is it too much to ask that they be the right length?

These criticisms don’t apply to modern Tamiya products, modern Dragon, or, as far as I know, current Trumpeter or Revell-Germany. But they can all be criticised for their sometimes exorbitant prices. I know, I know—I want it all ways, tracks that fit and an affordable price. I’m just out of touch with reality...

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