RE: 1/18 RC Sherman  
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RE: 1/18 RC Sherman - 5/10/2008 7:55:49 PM   
borealis



Posts: 528
Joined: 1/11/2007
From: , ITALY
Status: offline
quote:

ORIGINAL: Leon01

Wow nice one of a kind Sherman. Do the 1/18 scale and 1/16 scale Shermans have a big scale size difference?


It should be about 1.6 inches in lenght, more or less.

(in reply to Leon01)
       Post #: 51

RE: 1/18 RC Sherman - 5/10/2008 9:10:43 PM   
971wright


 

Posts: 459
Joined: 12/17/2007
From: nelson, UNITED KINGDOM
Status: offline 		Hi Borealis very nice job it looks great always wanted a sherman but cant afford tamiya prices this is a good way for me to go. You say your having problems with throwing tracks have you thought about tamiya tracks .

keep up the good work and the tank is great



regards pete

(in reply to thebronze)
       Post #: 52

RE: 1/18 RC Sherman - 5/10/2008 9:56:27 PM   
borealis



Posts: 528
Joined: 1/11/2007
From: , ITALY
Status: offline 		The Tamiya sherman is a HVSS bogie type, and its tracks are similar to those of the Pershing. The one I made has VHSS bogies, therefore the tracks are completely different.
Unfortunately I have tried several combinations but there is not a track compatible.
However I will try to find a way to buid one with existing parts (I cannot cast parts myself).

(in reply to 971wright)
       Post #: 53

RE: 1/18 RC Sherman - 5/11/2008 12:06:00 AM   
thomasjohnmurphy


 

Posts: 504
Joined: 10/30/2007
From: St Catharines, ON, CANADA
Status: offline 		I found the same thing with a 1/18 panther I had converted to HL RC. My next one is using the Tamiya Panther tracks and it works flawlessly. A suggestion to keeping you tracks on is buidling a guide on the outside of the chasis that would prevent them from slipping far enough to fall off. While not perfect solution it would allow you to use your tank.

(in reply to borealis)
       Post #: 54

RE: 1/18 RC Sherman - 5/11/2008 7:45:52 AM   
borealis



Posts: 528
Joined: 1/11/2007
From: , ITALY
Status: offline 		Hi Thomas,
with the Sherman the problem is that on concrete, when you try to turn, the tank steers, but the thread stays there, like glued to the surface. Too much friction. The result is that the external thread (as to the steering direction) is thrown outward, the internal one is thrown inward, almost simultaneously for all its lenght. But the throwing begins mainly in the bottom and sprocket area, due to the track side horns being rubber too, and they bend sideways, throwing themselves.
If I would be masochist, I could fabricate a couple hundreds track 'horns' in some stiff material. and assemble them on half-width Pershing tracks.
Maybe when I retire

(in reply to thomasjohnmurphy)
       Post #: 55

RE: 1/18 RC Sherman - 5/11/2008 8:38:47 AM   
calvinlo


 

Posts: 321
Joined: 4/19/2006
From: Singapore, SINGAPORE
Status: offline
quote:

ORIGINAL: borealis

Hi Thomas,
with the Sherman the problem is that on concrete, when you try to turn, the tank steers, but the thread stays there, like glued to the surface. Too much friction. The result is that the external thread (as to the steering direction) is thrown outward, the internal one is thrown inward, almost simultaneously for all its lenght. But the throwing begins mainly in the bottom and sprocket area, due to the track side horns being rubber too, and they bend sideways, throwing themselves.
If I would be masochist, I could fabricate a couple hundreds track 'horns' in some stiff material. and assemble them on half-width Pershing tracks.
Maybe when I retire


Hi Borealis,

Your effort is really inspirational! I've just ordered a bbi sherman, and will be borrowing a lot of your ideas.

Just a question - When you said that the tracks has too much friction, is it because of the stickiness of the track material itself? If it is, I wonder whether the problem can be solved by using some means (I'm not sure yet) to lessen this friction...

_____________________________

1/16 HL Pershing, HL Panzer IV, HL Tiger late (Elmod), Torro T-34 (Elmod), Tamiya Tiger

(in reply to borealis)
       Post #: 56

RE: 1/18 RC Sherman - 5/11/2008 9:08:15 AM   
grompix



Posts: 101
Joined: 12/2/2007
From: Newcastle upon Tyne, UNITED KINGDOM
Status: offline 		Outstanding work!
Looks like it runs very well.
I love the volume control and lightswitch ideas.
Chris

_____________________________

"A Sherman can give you a very nice edge."

(in reply to borealis)
       Post #: 57

RE: 1/18 RC Sherman - 5/11/2008 10:08:07 AM   
971wright


 

Posts: 459
Joined: 12/17/2007
From: nelson, UNITED KINGDOM
Status: offline 		Hi Borealis You could cut the rubber chevrons of the tracks and glue plastic ones on or even metal. just a thought this would reduce friction .


regards pete

(in reply to grompix)
       Post #: 58

RE: 1/18 RC Sherman - 5/11/2008 11:11:02 AM   
wackywheelz



Posts: 2051
Joined: 4/20/2006
From: Launceston, AUSTRALIA
Status: offline 		A lot of work and I doubt the glue would hold up long. Does the BBI have suspension (doubt), another contributing factor...

_____________________________

Tamiya Sherman | Matorro KT | Bandai Hummel | HL Tiger (x3), Pershing, PzIII, Bulldog | T34/76 | 1/12 M1A2 | T34/85 (x2)

(in reply to 971wright)
       Post #: 59

RE: 1/18 RC Sherman - 5/11/2008 2:54:34 PM   
thomasjohnmurphy


 

Posts: 504
Joined: 10/30/2007
From: St Catharines, ON, CANADA
Status: offline 		Another option is (as I did with my Panther, I put the Tamiya Panther drive sproket/ and tracks on) I know its a little out of scale but in the end, its hard to notice. I just picked up a 1/18 M48 wich I plan to RC. I will be using the HL Pershing sproket and tracks becaue I know the problem you are facing is the same problem I faced with my first Panther tank. Its not a perfect solution but it will work.

(in reply to borealis)
       Post #: 60

RE: 1/18 RC Sherman - 5/11/2008 4:21:25 PM   
borealis



Posts: 528
Joined: 1/11/2007
From: , ITALY
Status: offline 		The problem is the combination of rubber friction with the ground, plus rubber horns which do not offer enough resistance sideways and bend, letting the wheels jump over them.
Replacing the rubber chevrons alone would not be enough, while strenghtening the rubber horns could be, but how? Maybe inserting small plastic or metal 'U's between each couple of horns...
Replacing the sprocket with something compatible borrowed from the 1/16 scale would have been fine, but there is nothing compatible among the RC tanks I know about.

About the missing working suspension, the existing bogies seem to be strong enough to last. The connection with the lower hull is bullet proof, and the wheels have metal pins.

Thomas, keep me informed about the M48 Patton: it was something I was considering to do and I would be very interested in a build thread upon the subject. The IR pointer (or thermal or whatever it is) on the barrel would be a great place to put a pinhole cam or a IR battle emitter.

(in reply to thomasjohnmurphy)
       Post #: 61

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