Tamiya releases the Astute in 1989. The first tamiya buggy where you can beginning to race with. This 2wd was designed to obtain great performance.
Ball differential, suspension adjustment, low profile tires, FRP chassis, roll bar, bell crank steering, everything is present to compete.
Tamiya has develop a new technology for the rear drivetrain. The Z point suspension as named, permit to increase toe -in when the damper is compressed.
The ball differential can be adjusted by adding spacers, there is no spring in outdrive like usual.
A clever idea from engineers was to create a door below the transmission gear case to facilitate access to the differential through a hole in chassis.
All electronics are planted in right place (for a competition buggy) and well protected thanks to the body and his under cowl
Even if others manufacturers use ball cup, Tamiya ajust the upper links with bushing.
I didn’t have the time to drive this freshly refurbished buggy by me. Someone bought it before I put the wheels on track!
Moreover, I remembered when I was a kid and beginning RC with my Tamiya Falcon, my neighbor was offered for his birthday an Astute with Futaba Attack radio.
He was the “king of the hill” with that car, it look so much modern compare to my Falcon. Fast and silent, the low ground clearance and lack of roll was impressive in the park.
After few years, I bought his used Astute and make some run with it on a backyard track. The car wasn’t so impressive on my bumpy track, turning without understeer was really hard.
All the weight is concentrate at the rear. and the front drivetrain were totally overwhelmed.
Although I keep good memories, the Z-Point suspension and bushing in links were not really a good innovation. As you can imagine it was not a success and racers easily swapped them with Tamiya Madcap parts to obtain a rear drivetrain without play in assembly.
David from RC4ON
Here some interesting documents from my collection:
Even if they are not vintage, Scales cars are also a hobby of mine and I want to share those ones on website.
This is a Man 6×6 from Cross-rc a newborn chinese manufactured. It’s a permanent locked six wheel drive without speed gearbox. Delivered as a kit but some parts are assembled like the transfer case and axle. The light kit, the motor are included.
The manual is well detailed but there is no translation.
The transfer case is epicyclic.
It’s a ladder type frame chassis.
The suspension look like the real one.
Follow the manual and you will obtain this in few hours.
The body take times many more. You should assemble all the parts with glue like a model kit.
The kit is sold as a military truck. But I’d rather to do something different.
A lot of work, some stickers and scale accessories, and here it is, a Truck from the Breslau Rally.
All the suspension parts are reduction of the real Man 6×6. You apreciate the work of them when the truck climb a rock. The wheel travel is not overstate as a crawler or rock racer.
The tire looks scale but lake of grip. They are not sticky as those we found as aftermarket tires. You take your time when you drive, to not damaging the body. This one is pretty weak and will not support rollover as a lexan body.
This heavy truck is fantastic, looks like a real one when you drive it. This Man climb everywhere if you keep in mind its 1:12 scale.