Honda C-100
Dream
   
Honda CBF 250
Twister
    
Classic &
Rare Bikes
Sundown Hunter 90 Sundown STX
Motard
Yamaha Ténéré 250

   Sites's Map

Bookmark and Share

Português

Yamaha 250 cc, 1971 make (model YDS7)

In 1973, already living in Brasilia - DF - BRAZIL and attending the University of Brasilia (UnB), doing Economics, I decided to buy a  Yamaha 250 cc, 1971 make (model YDS7).  This motorcycle hadn't been well cared for and I bought it without noticing a problem that wasn't apparent: the cylinder head was cracked.  During one of my constant weekend trips, travelling from Brasilia to Goiania, due to the hot weather the crack became wider and the action of outside air coming into the combustion chamber produced a hole in the piston head. The two-stroke engine immediately lost power and because of that I spent hours that day to complete my trip, counting on one cylinder only.

Historic perspective:

Matchless 250 cc (British) tuned by "seu Andre" (Andrea Martelli - in this photo he is fixing the bike's engine), this bike won that race at Interlagos International Autodrome -SP in 1952. The racing driver at his right side was his friend and business partner Erwino Boettcher (Paulistinha). This was an international meeting, and had the participation of European racing drivers.

Matchless 250 cc (British) tuned by "seu Andre" (Andrea Martelli - in this photo he is fixing the bike's engine), this bike won that race at Interlagos International Autodrome -SP in 1952. The racing driver at his right side was his friend and business partner Erwino Boettcher (Paulistinha). This was an international meeting, and had the participation of European racing drivers.

"Seu Andre" (first standing up at the left side) among European racing drivers and mechanics (Italians, French and German) whith whom he competed and won, at the mentioned event of the above photo.

"Seu Andre" (first standing up at the left side) among European racing drivers and mechanics (Italians, French and German) with whom he competed and won, at the mentioned event of the previous photo.

Consequently my destination wasn't a surprise: I went straight to MIL workshop (MIL - Mecanica Importadora Limitada - a very famous Yamaha dealer at that time) in Goiania - GO; there Paulistinha gave me the "verdict" - only a complete engine overhaul would fix my bike's problem.  He would have to order all parts from Yamaha Japan, and I would have to wait - as simple as that.  Unfortunately the ship that was carrying a huge stock of parts from Japan to Santos (the main Brazilian port close to Sao Paulo) caught fire, and because of that I had to wait three months to have my bike fixed.  In spite of this delay the service was done by "seu Andre" and Arildo (one of the best Yamaha mechanics in Goiania that time).  They used parts (pistons and piston rings) of the Yamaha RD 250 recently unveiled by then, and my bike became much better than before.

Historic perspective:

Erwino Boettcher (behind the counter at the left) serving a client at Mecanica Importadora Limitada (MIL) in Goiania - GO in the sixties. The bikes seen in this photo are European bikes (brand new Jawa, BMW and Mondial).

Erwino Boettcher (behind the counter at the left) serving a client at Mecanica Importadora Limitada (MIL) in Goiania - GO in the sixties. The bikes seen in this photo are European bikes (brand new Jawa, BMW and Mondial).

"Seu Andre" working on an engine, at MIL workshp in the sixties. Appearing partially behind the engine is Paulistinha, business partner and friend of "seu Andre".

"Seu Andre" working on an engine, at MIL workshp in the sixties. Appearing partially behind the engine is Paulistinha, business partner and friend of "seu Andre".

In this motorcycle I did many trips (Goiania - Brasilia - Goiania).  This bike was very fast indeed, and at that time it was an up-to-date and very sought after motorcycle.  For me it was a far trek from my little 50cc - the Yamaha YF5 that I had owned previously.

aautorule.gif (377 bytes)

When this page was first published in Portuguese, in May 1999, I couldn't find any picture of this bike.  Then I left a note, where those lines are being written, asking for help.  I asked for help even from Yamaha Japan, and they replied to me saying that they would do an extra effort in order to digitalize photos of their early bikes.  Unfortunately that didn't happen.  Despite my initiative of contacting even Yamaha collectors in the USA, New Zealand and England I couldn't on that occasion to get a photo of a bike like mine.  However my message was seen by a young man from Belo Horizonte - MG - Brazil, and due to his initiative I got the photo below.  Many years later I could find another photo - this time a photo showing a bike exactly like mine - through my own research at Google;  this photo is the second shown below.

"With a little help from my friends":

Yamaha YDS7, 1972 make.

Yamaha YDS7, 1972 make.

This photo was kindly sent to us by Robinson Matos from Belo Horizonte - MG, in 04/04/2001. My bike was similar to that, except for the "drop" painted on the fuel tank: in my bike the drop was white in colour.  But my bike was identical to that shown below.

Lateral sight, left side - Yamaha YDS7, 1971 make.

Lateral sight, left side - Yamaha YDS7, 1971 make.

Alternatively you can access the following link in order to see many models of this bike - a classic and quite rare Yamaha nowadays, according to my humble opinion:  http://perso.wanadoo.fr/motocollection/photos_yds7.html#

Another very useful link for the enthusiasts of this motorcycle is:
http://www.motorbike-search-engine.co.uk/classic_bikes/yamaha-yds7-road-review.php

This is a very complete and detailed evaluation report indeed.

Yamaha YDS7 1971: my bike was identical to that.

Yamaha YDS7 1971: my bike was identical to that.

Last, but not least, I would recommend: http://www.classicyams.com/for the Yamaha lovers.

During the Megacycle, in São Lourenço - MG, on the 21st of November, 2009 I had the wonderful surprise of coming across a Yamaha YDS7, 1971; identical to that I had during 1973 / 1974.  Thirty six years had gone since I last saw a bike like that - since I sold mine. The lucky owner (Waldir) bought this motorcycle recently, and it is in a very good original condition.  He is intending to restore it to a pristine condition.

I praised his initiative. For me this "close encounter of the third kind" was a lucky event that brought joy and happiness to me, as you can see at the photo below.

A very happy encounter: me, Waldir and his Yamaha YDS7, 1971. São Lourenço - MG, during the Megacycle 2009 (21st of November, 2009).