_GOTOBOTTOM
Яusso-Soviэt Forum
Russian or Soviet vehicles/armor modeling forum.
Hosted by Darren Baker, Jacques Duquette
1/35 . KV-1 & ChTZ S-65 Tractor With Cab
Hoa_ro
Visit this Community
Ho Chi Minh City, Vietnam
Joined: November 01, 2011
KitMaker: 50 posts
Armorama: 50 posts
Posted: Thursday, September 26, 2013 - 04:22 AM UTC
_ Hello...

_ 1/35 KV-1 Trumpeter & Russian ChTZ S-65 Tractor with Cab.

_








Hoa_ro
Visit this Community
Ho Chi Minh City, Vietnam
Joined: November 01, 2011
KitMaker: 50 posts
Armorama: 50 posts
Posted: Thursday, September 26, 2013 - 04:24 AM UTC
_



Blackstoat
Visit this Community
England - East Anglia, United Kingdom
Joined: October 15, 2012
KitMaker: 568 posts
Armorama: 561 posts
Posted: Thursday, September 26, 2013 - 06:30 AM UTC
Yep. Can't say a lot other than nice job mate

Always fancied doing a gas Stalinetz towing some big 'ol artillery
Minsk94
Visit this Community
Wisconsin, United States
Joined: June 16, 2008
KitMaker: 418 posts
Armorama: 408 posts
Posted: Sunday, September 29, 2013 - 09:36 AM UTC
I know everybody hates rivet counters, but unfortunately, S-65 would not be able to move KV tank. It could tow not more than 10 metric tons. Even the empty up-armored KV-1 would weight almost 50.
Just a reality check
cassshay
Visit this Community
West Virginia, United States
Joined: September 17, 2013
KitMaker: 55 posts
Armorama: 52 posts
Posted: Sunday, September 29, 2013 - 10:39 AM UTC
Hey maybe they are waiting around for more help?

Mark

Jacques
Visit this Community
Minnesota, United States
Joined: March 04, 2003
KitMaker: 4,630 posts
Armorama: 4,498 posts
Posted: Sunday, September 29, 2013 - 02:51 PM UTC

Quoted Text

I know everybody hates rivet counters, but unfortunately, S-65 would not be able to move KV tank. It could tow not more than 10 metric tons. Even the empty up-armored KV-1 would weight almost 50.
Just a reality check


Nicely put Alex. I prefer this form of constructive criticism.

That said, totally correct. The S-65 would blow the transmission before it would move the KV-1...BUT, it could help something else. With the crew sitting idly by, that sure seems to make sense. Nice work on a fun diorama.
165thspc
#521
Visit this Community
Kentucky, United States
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Wednesday, October 16, 2013 - 05:45 AM UTC

Quoted Text

I know everybody hates rivet counters, but unfortunately, S-65 would not be able to move KV tank. It could tow not more than 10 metric tons. Even the empty up-armored KV-1 would weight almost 50.
Just a reality check


Sorry man but towing ain't the same as lifting. On a 45 degree slope a 50 ton tank would take 25 tons+ of force to pull it up the hill.
But on a gentle 5 degree slope it would only take 2.5 tons of pull to move the tank up the hill. Something the WS-65 was more than capable of!

So these guys are just goofing off having lunch. As long as there arn't any steep hills in their future they are good to go.
165thspc
#521
Visit this Community
Kentucky, United States
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Wednesday, October 16, 2013 - 11:55 AM UTC
Also those tank tracks are in good shape, not broken so we are talking about towing something that ROLLS not a dead weight! Regards
PantherF
Visit this Community
Indiana, United States
Joined: June 10, 2005
KitMaker: 6,188 posts
Armorama: 5,960 posts
Posted: Friday, October 18, 2013 - 11:08 PM UTC
Beautiful work Thanh on both vehicles.

Maybe the KV can be pulling the tractor out of a ditch?




Jeff
JamesL27
Visit this Community
United States
Joined: June 02, 2013
KitMaker: 202 posts
Armorama: 199 posts
Posted: Sunday, October 20, 2013 - 09:54 AM UTC

Quoted Text


Sorry man but towing ain't the same as lifting. On a 45 degree slope a 50 ton tank would take 25 tons+ of force to pull it up the hill.
But on a gentle 5 degree slope it would only take 2.5 tons of pull to move the tank up the hill. Something the WS-65 was more than capable of!

I'm going to have to correct some math here, half the angle does not mean half the force. sin(45) = 0.707, 0.707 x 50 tons = 35.35 tons. Likewise, at 5 degrees it's about 4.35 tons.
I'm guessing you linearized it to get a ballpark figure, but it's still a 30% error at 45 degrees.
Getting ahead of myself, to lift the Kv-1 at 50 tons the maximum angle would be ~11.5 degrees.

Anyway, I'm not sure how they rated the towing limit. Pulling versus lifting would make a huge difference. Even pulling 10 tons on treads versus dead weight on the ground is a big difference.

But it's shown on the box art and it's a cool diorama so I like it
165thspc
#521
Visit this Community
Kentucky, United States
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Monday, October 21, 2013 - 04:20 AM UTC
Whatever - The point is that it doesn't take 50 tons of pull to tow a 50 ton tank it only takes a small fraction of that on level, dry ground with an easy rolling vehicle to be recovered.

This Russian tractor is more than up to the task at what probably amounts to roughly 5 to 8 tons of drawbar pull on dry, level ground. (Todays tractor drawbar pull can easily exceed 100% of the vehicle's gross weight based on ground conditions - so this drawbar estimate is not out of line for a 1940's era tractor.)

Can we at least agree on that much?

p.s By-the-way Thanh, GREAT work! Just your weathering on the tractor makes me want to go out and buy one!
 _GOTOTOP