how many weeks,months,years do you generally work on a Tank

I take about 8 week in dog years.  (1 human year = 7 dog years),,,you do the math

Usually between 4 and 8 weeks. Mainly depends on how complex the diorama is.

It varies according to the complexity of the kit, availability of paints etc., and enthusiasm level.  Revell 1/76 Challenger took about 3 weeks, Tamiya 1/35 Churchill about 4 weeks This is working mostly at weekends - I can't usually be bothered after work during the week. But my Tamiya 1/35 Challenger 1 took about 6 months - definitely a temporary drop in enthusiasm level (down to about 1.5).

My minimum time for a "real" model has been a solid month for an easy one, like the Slammer I just finished, but I normally take about three months to actually finish something. I don't count shelf queens like the ancient Tamiya T-62 I pulled out last week and added some more bits from the three pounds of Verlinden resin I have for it. I'm pretty sure I started it more than five years ago.  I'll know for sure when I did up the build thread I started on it. On the other end of the scale, I can do a Meng Toon Tank in a couple of evenings.

Some years ago I would have said 2 to 3 weeks, but then I dropped out of the hobby for a few years. I actually have a panzer IV that has been on the shelf of shame for 4 years.

However! I have now started, (today), on a Dragon Stug III, so I will report back.

Since last Christmas I have built, or started building five models. One Academy with a full aftermarket interior - finished, one Asuka - finished, three AFV Club - one finished and the other two ready for paint or final assembly. One of the three AFV Club has a full aftermarket interior. On average I'm running about 6 to 8 weeks, if you look at the total, but that is because I'm working on more than one at a time. I want to slow down in the future and only do one start to finish every three months. The truth is I like to get up early in the morning, about 6:00 and my wife doesn't get up until 9:00, so I have three good hours almost every morning to work in private with nothing to distract me but a nice hot cup of coffee.

Harold

Months... anywhere from one to at least six nowadays. My time estimates for this or that step are always off. I lose interest. Things go wrong. Days turn into weeks for researching the details. The modeling muse comes then leaves...

My 1/35 scale Sherman's take 5-6 months. My Takom jeep took me 8 months. I get delayed a lot due to "painting season" which I do in my garage. The season runs from June to Ocober. The rest of the time it's just too cold.

I take forever.  Almost literally.  I have been working on a tank kit for about a month now, a kind of simple one, and I am at the primer-fixy-primer-fixy stage.

But my tank is fight!  

   If I can stay focused, motivated and undisturbed by outside pressures ,I can build and finish a Tamiya tank in a few weeks. The more complex the kit is for me seems to drag out for several months. This has nothing to do with the quality of the kit,whomever manufactured it, but more of a statement of my skills and attention span. As a note I have kits that are over 10yrs old still on the shelf in some stage of completion.

I used to one in two weeks.  Now it takes me two or three months.  I lost my enthusiasm  with models.  I've done many over the decades.