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Tamiya M1025 Hummer from 1995

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Tamiya M1025 Hummer from 1995 Empty Tamiya M1025 Hummer from 1995

Post by laneboysrc Mon 3 Dec 2012 - 21:14

Recently we acquired a Tamiya M1025 Hummer. It came RTR (ready-to-run) with an old Acoms 27 MHz radio, a rather new NiMH battery, a charger and this vintage car that was first released in 1995.

Tamiya M1025 Hummer from 1995 8240291967_42aa085e9f

The Hummer is a 1/12 scale vehicle, but it runs on a standard 1/10 scale chassis -- Hummers are pretty massive cars, hence the scale difference works out well.

Tamiya M1025 Hummer from 1995 8241360262_9c77a2d66b

In typical Tamiya fashion the scale details of the car model are very nice.
The rear view mirrors are made from a rubberized plastic and stood up well to the test of the time.

Tamiya M1025 Hummer from 1995 8241360016_355ac15523

The windows are tinted. The 1.55" wheels and tires are the same that are sold to date in CC-01 based kits like the Unimog or Toyota Land Cruiser.

Tamiya M1025 Hummer from 1995 8240292237_299f7a909c

The body is held on with two body clips at the back -- which are missing on our vehicle due to damage to the rear shock tower. The front is secured by hooks on the body that mate up with a bar spanning the front shock tower.

Tamiya M1025 Hummer from 1995 8240290627_887ebfe607

The body accessories like the windows, lights, roof-latch, hooks and air intake are bolted on with screws, which makes it easy to repaint the body. Thanks Tamiya!

Tamiya M1025 Hummer from 1995 8241359722_5dc94b521f

The chassis is a mixture of TA01 and TA02. The TA01 chassis was a 1/10 scale touring and rally chassis released first in 1990 for the "Manta Ray". It is four wheel drive with a ball differential (!) in the back and a gear differential in the front. The traditional silver-can is mid-mounted directly into the rear gear box housing.
The steering servo lies flat in the front as it is usually seen in buggies. The middle section is occupied by the rather large receiver, throttle servo and mechanical speed controller.

Tamiya M1025 Hummer from 1995 8241359184_87fc18215f

Most of the chassis pieces are from the TA01, but the rear arms are from the TA02. They are angled backwards, giving the chassis the longer wheelbase needed for the Hummer.

Tamiya M1025 Hummer from 1995 8241358944_8a20ed54b2

The 4WD chassis is shaft driven, with a thin metal shaft linking bevel gears in the front and rear gear box. The shock absorbers are Tamiya CVA mini shocks with 60mm length.

Tamiya M1025 Hummer from 1995 8240291199_65ae3038d0

On our car the rear shock tower was repaired, making the body sit a bit too low. We will replace the broken pieces with original spare parts which surprisingly can still be found at on-line retailers.

Tamiya M1025 Hummer from 1995 8240291387_87220b6f1c

A blast from the past: 3-step mechanical speed controller (MSC). At full speed the battery is directly wired to the motor. At the slower speeds a resistor (the metal-caged device with the sticker) is placed between the battery and the motor. This reduces torque and therefore speed. Actually while torque is reduced by quite a bit, it has not so much effect on the top speed of the car when run on smooth surfaces. As side effect the resistor gets very hot very quickly.

It is a fun experience driving such a vintage car. The glitchy-ness of an old 27 MHz AM radio system and the crude response of the 3-step MSC make for quite a thrill ride when there are obstacles around.

Here is a short video from a test run before repair work started:


We are very happy to have the Tamiya M1025 Hummer as part of our ever-growing fleet. Spare parts are already in transit. Most likely we will re-paint the car white, like an UN peace vehicle. The electronics will be upgraded to an ESC and a 2.4 GHz radio system -- but we will certainly keep the old parts for future "museum" use. We will swap the differentials (ball diff to the front, gear diff to the back) and lock the rear differential to allow for mild trailing.

Stay tuned for when our M1025 Hummer is reborn!
laneboysrc
laneboysrc
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Posts : 877
Join date : 2012-05-21

http://laneboysrc.blogspot.com

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Post by Wrigleys Mon 3 Dec 2012 - 21:30

What a gem! Be sure to bring it along for the trails. Smile
Wrigleys
Wrigleys
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Location : Outback

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Post by boolean21 Mon 3 Dec 2012 - 23:57

nice updates bro!
show us the baby during the trails!
Twisted Evil
boolean21
boolean21
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Posts : 5035
Join date : 2011-08-18
Location : Deep inside the Jungle

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Tamiya M1025 Hummer from 1995 Empty Re: Tamiya M1025 Hummer from 1995

Post by wyetuck88 Tue 4 Dec 2012 - 0:50

I love old school retro rigs!!! Smile
wyetuck88
wyetuck88
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Join date : 2012-05-26

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Post by Sabretooth_aw Tue 4 Dec 2012 - 20:56

Nice.... yeah... but glad it went to a good home... If you want, I still got the tamiya battery. Very Happy
Sabretooth_aw
Sabretooth_aw
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Join date : 2012-12-03

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Tamiya M1025 Hummer from 1995 Empty Re: Tamiya M1025 Hummer from 1995

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