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Topics - K2-K6

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Announcements / Peter Williams
« on: January 10, 2021, 11:16:00 AM »
Peter Williams 1939 ~2020

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One of the finest motorcycle engineers ever.

Thought the picture was appropriate as that era was amazing.

Misc / Open / Non bike but mesmerising engine.
« on: June 27, 2020, 07:25:14 PM »

As title,  engine note like nothing else.

Misc / Open / Historic scramble footage
« on: June 19, 2020, 10:25:50 PM »
Really good quality filming of 1960s motorcycle scrambling,  with some terrible engine noise dubbing  ::)

Worthwhile to watch though.

Misc / Open / Wishing a Happy New Year
« on: December 31, 2019, 10:15:11 PM »
Happy new year to all

Something to get started with  :)

Project Board / Stainless exhaust
« on: October 17, 2019, 08:37:15 PM »

Misc / Open / 1970s road racing
« on: August 10, 2019, 09:59:25 PM »

For those that like this era of road racing this is a really good short film,  principally Agostini but so many other characters also.

Good footage of Phil Read on MV some great sound track too on surely one of the best looking bikes on the planet.

Anorak's Corner / Carb setting for pod filters etc
« on: May 10, 2019, 05:23:52 PM »
Found in an old magazine,  it's carried out on different engine but clearly shows what happens when removing the std airbox and then to compensate via rejetting to run correctly.

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Clearly shows with test data why it is difficult to sort out just by changing existing jets when it's really a response curve mismatch that is the root cause.

CB350/400 / Neat 400 based racer.
« on: March 25, 2019, 04:16:59 PM »
Thought this was a good looking race adaption of 400,  more practical than stylised with very neat details.

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More details on the link above.

Humour / 1970s music!
« on: January 20, 2019, 08:39:40 PM » to go with our 70s era bikes.

Some genuine 1970s glam-rock with an update twist.


CB750 / unusual modded engine SOHC?
« on: December 08, 2018, 06:17:07 PM »
Have a close look at the bottom, then the top.

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See what's been done?

Other Bikes / Airbox and intake
« on: October 05, 2018, 09:32:47 PM »
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Looking at this arrangement that you don't usually see opened like this.  Lorenzo crashed his Ducati moto gp bike and made a real mess of it this morning which allowed a view into something that's generally covered.

It uses an airbox,  the top of which is to rhs of picture. Intake bell mouth which are retracted and extended to affect engine combustion, they raise and lower on that frame which also has the fuel injectors travelling with them.
Interesting that with all the ecu control available and virtually unlimited R+D resources, it still has to use something that is fundamentally the same as our old road bikes to make the inlet system flow properly. 
If they need this stuff to run properly,  then how difficult does that make it look to strip off the original Honda kit from these SOHC and have a realistic shot at getting them to run without glitches.

Other Bikes / 550 K3 Diesel!
« on: July 18, 2018, 05:06:50 PM »
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Found this which amused me, bit far to go in getting rid of those pesky PD carbs though.

I like the ad hoc diesel badge as well. What style ;D

The Black Bomber Board / 450 road test (+ others)
« on: March 28, 2018, 09:53:37 PM »

Interesting write up with some technical details from contemporary road test of 1970.

Site is live so you can look up other bikes on there too.


Misc / Open / Anyone seen this before?
« on: March 01, 2018, 07:24:37 PM »
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Found it in a recent 2011 bike mag,  never seen it before but interesting.

Misc / Open / aggregated honda site?
« on: March 01, 2018, 06:57:13 PM »

I've not seen this before,  maybe others have. Some interesting bikes.

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