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Re: M1A1HA, 10-25 Update. Lower Hull Details
Posted: Mon Oct 26, 2020 10:24 pm
by BarryC
Thank you Jarlath!
Your find makes perfect sense based on their location. I was sure they were for some type of maintenance action and now we know.
Barry
Re: M1A1HA, 10-25 Update. Lower Hull Details
Posted: Sun Nov 08, 2020 10:47 pm
by BarryC
11/8/20 Update
Finalized the Auto Track Tension Setup for the mounting for the Idler Arm.
I used a Ball Bearing at the Idler Arm hull penetration. Then another to allow the mount screw to turn with the Idler Arm. I used a spacer soldered to a plate (brass parts) to transfer the loads on the Idler Arm to a larger area of the hull. It was flexing too much under loads. I was able to use the original Tamiya mounting part (aluminum colored part).

Pictorial diagram of the assembly.

Pics of the installed assembly.
Thanks for looking in!
Barry
Re: M1A1HA, 11-8 Update. Auto Track Tensioner Completed
Posted: Mon Nov 09, 2020 11:33 am
by seanmcandrews
Hi Barry,
Here's some additional insight on those unidentified brackets on the lower hull sides, they accept the ends of a "track torque binder"(item #9) that appears to be used to support and guide the track as it's passed over the return rollers when attaching the track.
HTH,
Sean
Re: M1A1HA, 11-8 Update. Auto Track Tensioner Completed
Posted: Tue Nov 10, 2020 12:27 am
by BarryC
Thanks Sean!
Great info!!
Barry
Re: M1A1HA, 11-8 Update. Auto Track Tensioner Completed
Posted: Tue Nov 10, 2020 12:07 pm
by seanmcandrews
Sure thing ! Let's see some paint on this beast !
Sean
Re: M1A1HA, 11-8 Update. Auto Track Tensioner Completed
Posted: Tue Nov 10, 2020 4:35 pm
by HERMAN BIX
Nah! Clear coat only so we can see the extraordinary work this thing has undergone.!
Re: M1A1HA, 11-8 Update. Auto Track Tensioner Completed
Posted: Tue Nov 10, 2020 4:54 pm
by PainlessWolf
Good morning, Doc,
An inhuman level of work and attention to detail as always! Looking at the type of hex head fastener that you used on the inside of the lower hull, you could cut down a long hex key and have a -solid- hull brace or even, a powerful torsion rod for the idlers.
Regards and following along,
Painless
Re: M1A1HA, 11-8 Update. Auto Track Tensioner Completed
Posted: Wed Nov 11, 2020 8:02 pm
by BarryC
seanmcandrews wrote:Sure thing ! Let's see some paint on this beast !
Sean
Getting closer, I've been tiding up different parts of the build and completing others.
Barry
Re: M1A1HA, 11-8 Update. Auto Track Tensioner Completed
Posted: Wed Nov 11, 2020 8:04 pm
by BarryC
HERMAN BIX wrote:Nah! Clear coat only so we can see the extraordinary work this thing has undergone.!
Hi Herman,
I am considering a clear primer if I can find one that will at least allow me to photograph it in it's "natural" state before actual painting.
BArry
Re: M1A1HA, 11-8 Update. Auto Track Tensioner Completed
Posted: Wed Nov 11, 2020 8:08 pm
by BarryC
PainlessWolf wrote:Good morning, Doc,
An inhuman level of work and attention to detail as always! Looking at the type of hex head fastener that you used on the inside of the lower hull, you could cut down a long hex key and have a -solid- hull brace or even, a powerful torsion rod for the idlers.
Regards and following along,
Painless
Thanks Painless!
I had thoughts of just that but had not considered a hex key. I'll have to "noodle"

on that for a while.
Barry