Frank, Dont tell that to the R2 builders that all use a Lazy Susan to turn 
their 
domes or the B9 builders that turn their waist's with this method as they all 
think it works great.

Do a google search for r2 dome rotation for many videos and tutorials on how 
this is accomplished with either a gear set or a friction wheel.

Andy




________________________________
From: Frank Pittelli <[email protected]>
To: [email protected]
Sent: Sun, June 5, 2011 8:02:46 PM
Subject: Re: [TANKS] turret rotation

Forget the lazy susan approach ... it just doesn't work.

For the sturdiest, most reliable turret mount:

1) Get a 1" OD pipe or tube and mount a flange on one end.

2) Get two 1" ID bearings and mount one above the deck and one below the deck 
at 
the center of turret rotation.

3) Place the pipe/tube through the bearings and attach to the turret base at 
the 
center of rotation.

4) Mount 4 ball-bearing casters to the top of the deck (or bottom of the turret 
base) on a circle large enough to support the turret.  See:

http://www.wttool.com/index/page/product/product_id/15667/name/Ball+Bearing+Casters+WT


for an example (although that particular one is probably too large).

The ball-bearing casters support the weight of the turret and the two center 
bearings ensure that it turns properly.  The 1" pipe allows plenty of room to 
run cables between the hull and turret.  Best of all, the turret can be taken 
off simply by pulling it up. Gravity usually suffices to keep it in place, but 
you can always add a set-screw, pin or collar below the deck to lock it in 
place.

    Frank P.

On 6/5/2011 2:59 PM, Andy_Basildon wrote:
> Still making my M1A1 1/6 and its huge, problem I have is the turret
> rotation, many others have used a lazy susan but my turret will be to
> large for it, looking for a dia of about 12" any suggestions?
> 

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