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Classic Bike Trackdays

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Diff'rent Strokers Forum Index
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  Topic: Eastern European's Infiltrate
Dave B

Replies: 85
Views: 46239

PostForum: Other Strokers   Posted: Fri Sep 11, 2020 8:36 am   Subject: Definitely Diffrent!
Not mine, or belonging to anyone I know, but this MZ special is certainly different.

https://www.ebay.co.uk/itm/1972-MZ-Lowrider-Bobber-ETS250-ETZ301-Hardtail-Springers-May-P-ex-WHY/164346017480?_ ...
  Topic: The invention of the REAL two stroke engine.
Dave B

Replies: 3
Views: 437

PostForum: Petrolhead Chat   Posted: Fri Apr 10, 2020 8:57 am   Subject: The invention of the REAL two stroke engine.
We all did!
  Topic: The invention of the REAL two stroke engine.
Dave B

Replies: 3
Views: 437

PostForum: Petrolhead Chat   Posted: Tue Apr 07, 2020 12:52 pm   Subject: The invention of the REAL two stroke engine.
This is the basis for the entry in Wikipedia. If you want to see all the pictures, you can find the in my book:- Two-Stroke Motorcycle Engine Maintenance and Repair
by Dave Boothroyd.
  Topic: The invention of the REAL two stroke engine.
Dave B

Replies: 3
Views: 437

PostForum: Petrolhead Chat   Posted: Tue Apr 07, 2020 12:46 pm   Subject: The invention of the REAL two stroke engine.
This is an article I wrote about ten years ago about Joseph Day.
Forgotten Hero

The man who invented the two-stroke engine

By David Boothroyd
You would think that the man responsibl ...
  Topic: Reg The RV125 175 200
Dave B

Replies: 26
Views: 6479

PostForum: Suzuki   Posted: Wed Jan 08, 2020 10:04 am   Subject: Reg The RV125 175 200
What a great story. Obvoiusly a lot of work and problem solving, but in a very good cause. Thanks for telling us about it.
  Topic: Eastern European's Infiltrate
Dave B

Replies: 85
Views: 46239

PostForum: Other Strokers   Posted: Fri Nov 29, 2019 10:27 am   Subject: Eastern European's Infiltrate
It's a shame you gave up on the ally monocoque. I have a friend who lives Bedford way who made several LCR copies for 80cc race bikes when that class was running. Just like the Louis Christian frames ...
  Topic: YZ/RD 80 Race bike
Dave B

Replies: 3
Views: 1256

PostForum: Yamaha   Posted: Sun Nov 03, 2019 9:10 am   Subject: YZ/RD 80 Race bike
Hi James,
I seem to be constitutionally incapable of leaving things standard, so I can tell you that there were a lot of changes to the porting. To some extent I was a bit ahead of my time in that, e ...
  Topic: YZ/RD 80 Race bike
Dave B

Replies: 3
Views: 1256

PostForum: Yamaha   Posted: Sun Oct 27, 2019 10:14 am   Subject: YZ/RD 80 Race bike
This is my 80cc race bike in its final configuration. It has a YZ80 engine, a cold air box for the carb, an MBA fairing and a CBR600 front brake. At the time I was making computer designed exhaust pip ...
  Topic: Then and Now
Dave B

Replies: 2
Views: 462

PostForum: Petrolhead Chat   Posted: Fri Oct 25, 2019 10:19 am   Subject: Then and Now
They changed the golf balls for a giant toaster!
 
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