26 Апр 2015 | Author: | Комментарии к записи Tesi отключены
Bimota Tesi 2 D

Bimota Tesi


Picture is the ad of those days.

Appeared with its characteristic mechanism the front wheel, which is not a telescopic fork, but a swinging arm of for a rear wheel. Steering is build in the front wheel hub hub steer) and the handle bars are through a few link joints.

is the liquid cooled type of

Its name Tesi is a italian means thesis, or proposition. because the BIMOTA chief MARCONI made its basic as a theme of his graduation thesis of Univ.


Picture is from the ad of days.

It was a marvelously impressive

Test riding course was in a it didn’t match to the radical of that bike. But it made impact from the first of a small corner.

Front works so hard. It makes thrust force.

That situation can be figured as the big angle of front wheel a sudden full braking and with a telescopic fork You can push front tire

You may say, gee, that’s on rental bike in town !

it is.

But I didn’t feel any fear.

fat radial front tire is against a too much thrust But there’re no fear. Just a like, ah, front tire is now, that’s all.

kind of amazing feel is at a upright braking too. force is conveyed horizontally front axle towards the It makes no rotating force.

of braking with conventional fork can be said like of steering head with rod named fork, complying the of lever. We all bikers are familiar this kind of frame twisting feeling, maybe though.

Tesi differs. of the force from front just conveys straight, it not twist the body at all.

That brings a innovative

Which is, liberation from the of a front wheel lock up

A slip of the front tire not make the bike tumbling just slips transversely. all.


Progresses of motorbikes its force limit, and that high speed comfort for the But there are two antinomies.

One. limit is much higher the range of usual situation. difficult to estimate for normal

Two. When the tire down, the speed is very already exceeds normal ability.

When you feel that’s the end, maybe.

New wouldn’t break in good ex, fine weather, plain etc. You can ride them easily. But there’re many that may make you tumble in public road, ex, rain, gap or on road, etc.

High speed comfort not contribute to the safety in that of bad situation. High performance may not you safe. That’s an ambivalence of progress of motorbike.

Tesi had a answer for it.

Transverse joint of wheel makes high front tire familiar to a riders’ safety.

That’s the which Tesi showed.

Of hub steer is not the only answer. steering head can contribute to the for a normal rider. And the optimization of the elements is the must (ex, chassis, hopeful engine, rear suspension setting to its traction fine, etc.).


however, Tesi was not good for a road. It had a inferior around a hub mechanism. It might be no problem for that can change parts by one but it would be difficult to maintain as a road bike.

Sure, that was the BIMOTA like quality certainly.

So, is it for racer then. No. It’s too old. Tesi‘s manner is based on a thrust of chassis balance rather traction control of engine or

Bimota Tesi 2 D
Bimota Tesi 2 D

Fast racer of these has much higher efficiency and which is optimized for much tire force, stronger higher sheet, etc. of fat twin tube frame and down forks will its advantage still for a while.

And we also have problem.

How was ? I’ve asked to a few riders who it at the same time. Almost of said that it’s not One says that front grip felt poor, and the said the joint from bar to front wheel had too much They were right. felt its characteristics of mechanism.

system does not connected to front wheel, so it should be through the body rather handlebar. It can make some feeling for riders who are familiar conventional fork system.

Motorbike hub steering still some homework for both of the and the riders.


It’s still though, we have expectation

As a matter of safety, it can be applied with some resent features, like ABS or air-bag. a optimization of gravity center or alignment, it can contribute to establish the new motorbike.

But Japanese big makers no movement. It’s very

HONDA has much properties the developments of ELF racers. (Properties. It may though.)

elf-5 ( from magazine RIDERS CLUB No. 128 )

GTS 1000 ( Picture is from of those days )

YAMAHA its example only once. It was a luxury cruiser, but not any more. It be appreciated as a meaning of the study above.

I’d like to hope progress of hub steer system. will make a real of motorcycle from its technical bicycle.

There ware prototypes of hub steer system.

MC2, James Parker has it, who also designed GTS1000

Its base model is FZ750. so cool!

(from Japanese RIDERS CLUB 1987.9 No.

Tony Foale made a bit example.

Project QL, uses BMW OHV as power source.


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