@Tango: It's my 'race flag'... I like to go to the Petit Le Mans
(used to go every year); every year that I'm there, I get the Ferrari
drivers to sign my flag, which then goes on a longish PVC pipe
flagpole at turn 10 where they can see it during the race :) Got
several years' worth of sigs on it :)
@Chrys: Hehe... I love how long the Sherman has served; still in the
Chilean Army, armed with a high velocity gun from Israel. With all the
variants, I can do lots of different things, too; the way I am joining
the upper and lower hull, I can swap out the combat section for an
engineer vehicle upper :)
I don't have a local machine shop to cut aluminum for me and I'd
have to order the aluminum itself unless I cut it from 1/32" (.8mm)
sheet stock, which would take a while with 6 suspension stations, each
30mm thick...
In theory, I can cut aluminum up to 1/4" (6.4mm) with my jigsaw,
although it's a very slow cut. I have heard that it is possible to
cut aluminum with a tablesaw, although with the short cutting
distances involved, I'd worry about kickback of the work piece. I
have an old bandsaw but no metal cutting blade for it (although I
could buy one), and no assurance that it works. I'd like to improve
my shop, but that will have to wait until September when I begin
working full time as a nurse and make more than my part time medical
tech job does now. Then I can get a proper freestanding bandsaw.
I think the shortest-path to completion (with acceptable materials
strength) is to go with the laminated plywood (since I have enough
1/4" 5-ply marine grade plywood on hand) for the mounts. I appreciate
everyone's help and advice! Chrys, lest you think that I don't value
your input, the M60 IS going to run the 4" wide hinge tracks. Sending
out to get the drive sprockets made was just too expensive at the
moment :)
The current plan for the springs on this suspension is to drill the
swingarms for a screw to mount heavy springs on between the arms, as
you suggest.
On 7/3/09, Chrysanthos Kanellopoulos <[email protected]> wrote:
>
> Clark,
>
> Sherman was my absolutely favorite a few years ago. Good to see one here. I
> will have to agree with Steve. Perhaps you want to re-cut the keystone bogie
> blocks out of successive aluminium sheets?
> Also, what holds the swing arms in place? How are the springs mounted on
> them? It seems you could add a piece of very strong rubber or a plate spring
> in the little area where they join, though the leverage is huge there. Or
> just connect the swing armplates from underneath with very strong springs.?
>
> Chrys
>
>
> ----- Original Message -----
> From: "Steve Tyng" <[email protected]>
> To: "R/C Tank Combat" <[email protected]>
> Sent: Friday, July 03, 2009 3:32 AM
> Subject: [TANKS] Re: M4 suspension progress
>
>
>>
>> Clark,
>>
>> You may want to consider making those keystone shaped pieces your
>> swingarms are attached to out of laminated plywood. The fast growth
>> timber you used isn't particularly strong the way you have it
>> oriented. I can see the the bottom section snapping off where the
>> bolts go through with a strong side impact.
>>
>> Steve
>>
>>
>>
>> On Jul 2, 7:49 pm, Clark Ward Jr <[email protected]> wrote:
>> > I had a minor "failure to measure twice, cut once" incident, resulting
>> > in 24 pieces of tool steel that were 1/2" too short in a critical
>> > dimension. These will be saved for 1)another project and 2) a
>> > reminder of said incident. I substituted in a larger section aluminum
>> > bar for the suspension arms, measured thrice and cut once. It works
>> > well and is a heck of a lot easier to work with than tool steel... I
>> > have 1/3 of my suspension done, minus the spring mounts. The linked
>> > pics show the two forward port-side stations. The black material the
>> > tank is on is the treadmill belt that will soon be cut...
>> >
>> > http://i169.photobucket.com/albums/u224/tugboat706/Susp01.jpg
>> >
>> > http://i169.photobucket.com/albums/u224/tugboat706/Susp03.jpg
>> >
>> > http://i169.photobucket.com/albums/u224/tugboat706/Susp02.jpg
>> >
>> > --
>> > Clark in Georgia
>> > M4 Sherman
>> >
>>
>>
>
>
> >
>
--
Clark in Georgia
M4 Sherman
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