desmo16 wrote:Hello, I had a problem like that with my tiger1 Taigen with the 4: 1 ratio. In the end I replaced an engine that does not work well, basically a copper filament had been broken inside the engine, until it broke completely on the transmission shaft. If I were you I would try to reverse the engines and see if the problem is actually the engine.
43rdRecceReg wrote:In Britain, we have had news reports in the past of Trains not being able to run properly, or at all, when we had the 'wrong kind of snow' on the tracks.The network can also grind to a halt, with leaves on the tracks in the Fall.
On this basis, maybe you had the 'wrong kind of mud'.. The really abrasive kind.
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As an incidental, do you oil or grease your gearbox bearings/gears regularly? Dry PTFE works well, and even the Tamiya grease that comes with kits. seems to keep wear down.
In general, however, 'Pro' is added to many product descriptions these days- even face creams, to give a reassurance of quality.
Taigen steel gears seem to garner good responses, in the main. They should, as they are not 'gut und billig'- cheap. As with all things made in China these days, quality control is variable. So, it may have been a case of bad luck. The basic plastic gears often give good and trustworthy service, at a fraction of the price.
In the last two years, or so, I've dipped my toes into the Tamiya 'full-option' pool of tanking options. To me, the gearboxes feel, and look, better made. That is, with tighter tolerances, and the feel of precision.
That said, I think the King Tiger units had a known problem at one time. In all, though, they do tend inspire one with a little confidence that they will get through 'thick and thin', (mud, snow, and so on) season after season.
You're English is fine, by the way.
Son of a gun-ner wrote:Oh, this wasn't one of the cheaper Taigen boxes?
Like I said, I haven't looked into the reasons why. But if your tank still drives in a straight line like it did before you changed boxes, I wouldn't worry too much about it, the boxes should smooth out over time and use.
Sadly straight cut gear teeth are inherently noisy, made worse because they don't run in oil.
Car gearboxes gears are usually helical for two reasons, one, more tooth contact area for gear width, and two, less noise. But then again, the teeth on those gears are also smooth faced.
General Jumbo01 wrote:Personally, l wouldn't use the HengLong metal gearboxes as they are rather low on material quality. The Taigen boxes use better metals, reflected in their prices, but l guess you can always be unlucky and get a defective one. Why not send it back?
The HengLong nylon geared boxes run quite well and, unless you can't live with their gear ratios, I'd suggest you use them until they break. The Taigen model names, although they sound like gear ratios, are not (yes, l was fooled too).
Generally, all of the HL/Taigen/Torro motor and gearbox units are of basic quality. It may be possible to simply replace the motors with a quality 'can' with lower turns that would provide lower speeds and more torque but l'm not yet familiar with smaller sized units yet.
Always add a tiny spot of oil on both ends of the armature shaft bearings and then feel free to grease liberally the gearbox gears. Try to use a light weight grease that doesn't attack plastics - if you can find a Teflon grease this will be perfect but otherwise some model train greased do a good job.
Unfortunately, cheap brushed motors without ball races will always be noisey but l don't know the smaller brushless cans yet so cant recommend one, but with two brushless escs you'd have to get an 'open' spec MFU. Hope this helps.
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General Jumbo01 wrote:When you consider that in other forms of RC hobbies it is common to spend over £200 on just one motor and ESC to get two motors and two gearboxes for £12 - 100 is very cheap.
jarndice wrote:Hi,WD40 make a Dry PTFE spray which is ideal for lubricating Gearboxes
(WD-40 Specialist. Anti Friction DRY PTFE Lubricant) .
You mentioned Axle Support bearings, I am a firm believer in them and it is one of the first modifications on every Tank I purchase,
They prevent excess stress on the gearbox mountings and stabilise the gearbox output shafts which reduces the chance of Tracks being "Thrown".
I was surprised that the Taigen Gearboxes were so disappointing,
If you did buy them from DOM at http://www.rctank.de He would certainly want to hear about the problems you are having with them,
I would advise against buying Heng Long Metal Gearboxes, Yes they are much cheaper BUT they really are RUBBISH,
Whereas the Nylon Heng Long Gearboxes are very good value.
Ok, thank you.General Jumbo01 wrote:"Can", sorry, a term used for can style motors, not open frame type. Cheap, low quality versions of these motors are sealed, the brushes cannot be replaced and the commutator cannot be cleaned. If you replace them with more high spec "cans" you should also be able to select the number of turns /wind of the motor. When you consider that in other forms of RC hobbies it is common to spend over £200 on just one motor and ESC to get two motors and two gearboxes for £12 - 100 is very cheap.
If that gearbox has ball races on each end of every turning shaft and the frame is precision drilled then you should be fine there. Use a light oil on the ball races. Do not grease the motor shaft ends - just the smallest amount of light oil! Teflon grease is for the gear teeth. I'll take a look around 380 sized cans (for my own benefit too) and get back on that one.
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seb4 wrote:jarndice wrote:Hi,WD40 make a Dry PTFE spray which is ideal for lubricating Gearboxes
(WD-40 Specialist. Anti Friction DRY PTFE Lubricant) .
You mentioned Axle Support bearings, I am a firm believer in them and it is one of the first modifications on every Tank I purchase,
They prevent excess stress on the gearbox mountings and stabilise the gearbox output shafts which reduces the chance of Tracks being "Thrown".
I was surprised that the Taigen Gearboxes were so disappointing,
If you did buy them from DOM at http://www.rctank.de He would certainly want to hear about the problems you are having with them,
I would advise against buying Heng Long Metal Gearboxes, Yes they are much cheaper BUT they really are RUBBISH,
Whereas the Nylon Heng Long Gearboxes are very good value.
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