Topics

Hi guys,
how long is the RD400 1A1 fork spring please?
We have a discussion over here as the owner of a USA 1A1 thinks that the fork inners are different to the European 1A3 model.
Regards Uwe

Hi,
a few years back I had a RD400 with a 297mm TZ brake disc. So there was an adapter for the use of the genuine RD caliper installed. Sadly the bike is long gone.
So my question is. Has anybody a drawing or a STL-file of such an adapter plate?
I would like to build a bike with such a combo.
Regards Uwe

Hi guys,
stumbled over an interesting RD this summer. After a bit of thinking, bike stood in the Netherlands, I decided to have a go an buy it. After a 14hrs roundtrip I had it at home......
It is a complete homebuilt. The clever guy did everything himself. Converted RD engine into a 3 cylinder. Frame is a roughly built after a Bakker twinshock TZ frame he used as an inspiration. Fairing, mudgard,tank and seat he made of alloy. Engine is only blueprinted as he used it at parades only.
Everything was fabricated and built in a 2,5m x 4m garden shed





Regards Uwe

Hi all,
a guy on a german Facebook site has bought a YR3 and is a bit struggling to find data for that bike. Very rare bike overhere.
How much gearbox oil to fill in that engine please?
Regards Uwe

Hi guys,
a friend of mine in the UK stumbled over a very unique bike in spring 2021. A friend of him built and developed it. It was up for sale as soon as everything will be 100%. My friend got first option to buy it for me till all is sorted. Well this worked out now last weekend. Everything is running as it should. Very fast bike and handles really well.
An all homemade monocoque frame, 6-speed YZ250 engine converted to disc-valve induction, self engineered and then casted cylinder, Astralite 18" wheels, 35mm fork, Lockheed brakes, tank and plastics homemade also. Many hours in head scratching in this bike.I am very pleased my friend found this for me.






Regards Uwe

Hi all,
I thought it would be nice to start a thread about aftermarket swingarms for the Yamaha DS7/R5/RD's.
Here a few arms I own. It would be nice if you add info of swingarms you have or know of.
First I will show you a period, german made swingarm. Out of steel and made for the 1A2/1A3 range. Company is called K+J and is still in existence and still make them by inquiry. Weights in at 4kg.
The one on the right side




The one in the middle in the first of the above pictures is a Motolanna superlite alloy one made in Thailand. Not really for a RD but easy to adapt. Weight in at 2,95kg



Here installed in a 1976 RD250 race bike of a friend of mine



The black one in the first pic above is from Webike in Japan. Made by the same company who do the Motolanna ones. Alloy also. Weight in at 2,96kg.


Here a UK made JMC alloy swingarm for an european RD/E-F and US spec Daytona one. Massive profiles with excenter. But weights only 3,2kg inclusive the rear axle.



German period made swingarm by Fischer. Normally Fischer made frame kits for japanese 4cylinder engines end of the 70tees till mid/end 80tees and swingarms for stock 4cylinder framed japanese bikes. They did only a bit more of a handfull for the RD range. Very heavy at 6,6kg. Definately one more for the look than function.



Regards Uwe

Hi guys,
got 2 new race bikes. Swapped with 2 friends for 2 of my bikes.
First one is a Uk built Hejira PE250 from around 1980/81. The PE Suzuki engine is converted to disk valve induction.



The second one is a bike I formerly owned and came now back to home. Built back in 1977 behind the iron curtain in eastern Germany. It is a copy of an Egli TZ frame. In the pics there is a TZ250 engine in it. Now equipped with a TD3 one




Regards Uwe

Well guys,
I own one false stroke bike
In fact I own it after I crashed with it the day after the picture was made...... Before it belongs to a friend
It is a Yamaha FZ750 with 1000ccm engine. At the moment the bike is being rebuild after years in the shed.


Regards Uwe

Hi guys,
pics of a few of my bikes.
Honda RS125 1989. Was bought for my daughter a couple of years ago. But she decided to do what is in the second pic.....


Aprilia RS250 with kit spec engine. Dry clutch and short transmission

Suzuki RGV250 with much Tyga parts, VHM heads. The yellow Honda NSR250 MC21 behind mit RGV will get mine when my friend retire

Yamaha TZ250 from 1975 but was much modified back in period as it was raced till 1983. Than stood for 27 years till I got it. Raced then a couple of years by me and friends. Now under restoration

Yamaha RD250. My first race bike I ever built. Now very tired. Need a resto also


Regards Uwe

Hi guys,
let's start to fill the forum.
Here a few pics of my latest project.
A bike which was built back in 1981/82 in the UK and came to me to Germany in the winter 2017/18.
Bike is based on a YZ250H engine from 1981, frame a modified Honda MB5 one, fork, wheels and fairing of a Honda MT125R. Tank homemade.
Around 40hp, weight is 84,8kg.
A friend solved a few minor and bigger problems and it is now ready to race.





Regards Uwe