Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Topics - K2-K6

Pages: [1] 2 3 4
1
Misc / Open / interesting engineering story
« on: October 24, 2024, 08:31:49 PM »
Interesting content

https://youtu.be/kO0YsSqGsv8?si=uu0pBKGrpwf3y7ap

Don't think its been brought to forum previously, but possible  :)

2
Anorak's Corner / Carburettors with more depth of discussion
« on: October 03, 2024, 09:16:11 PM »
To discuss and, hopefully inform, with more in depth discussion of carburettor function and how it relates to these SOHC bikes along with their setup.

3
Misc / Open / Technical but not bike.
« on: May 31, 2024, 07:26:31 PM »
Interesting channel, engaging couple, good skills but funny outcome

https://youtu.be/-OKADykW3io?si=F8-GcVfo3Lb-Drc-

Takes a while, but good story and conclusion, if you've some spare time to watch.

4
Anorak's Corner / Brake, brake, brake ... a missing link
« on: May 28, 2024, 11:48:36 AM »
Topic debated before, assembly of front brake caliper and the lubricant to use in this assembly.

From 1970 CB 750 Honda workshop manual;- Verbatim  "Note : Use silicon sealing grease (temperature range of -67~ 392 F (-55 ~ 200C). Do not use molybdenum grease known as brake grease. "     

This accompanying a schematic of caliper showing the application point as both recess that accomodate active and fixed pads.

Also from Honda workshop manual 1978 CB 750 (last of SOHC bikes, with illustration of the K7 caliper in arrangement parallel to all the previous 4 cylinder motorcycle  calipers;- verbatim "Install a new piston seal. Coat the piston with silicon grease and install it. Apply silicon grease to the brake pad outer circumference and install."

This, in my appreciation of it, is that Honda direct the use of this grease only in assembly of the caliper.

Anecdotal view, I've  been using silicone grease in this way for some time. Part of this is that it appears to be the only common one I can use in system with mineral oil, or conventional dot fluid or silicone based fluid.

Interestingly, I dont get brake squeal in any system when using this method. It seems to offer the most competent piston return over significant period of use, being all but impervious to water ingress when exposed to poor working conditions too.

Both cycle disc (working on two four and six piston  calipers) that have very concise demands in preventing drag by piston contraction when releaesd, also cars & bikes when placed on mot rollers to test, these having notably extremely low drag before brake application.



5
Misc / Open / Engineering interest
« on: January 28, 2024, 11:30:35 AM »
For those interested in engineering thinking, design and application, this is a really really good watch

https://youtu.be/m7uZu_Wsdis?si=6lJopnvW44Uqvx11

A very lucid walk through of race car design engineering, Honda powered  :)  with many gearbox and clutch component design shared with bikes.

Quite long, but very worthwhile viewing.

6
Misc / Open / CB 750 On't telly
« on: April 14, 2023, 02:13:19 PM »
Anyone see the eposide, last night, of Mike Brewer dream cars (or something like that) in which they trade their way upwards to give someone their dream car.

One of the vehicles bought and sold was a CB 750 partly built by a restoration expert "Andy" as he didn't want to complete for reason of, too much work.
Usual description, motor gone through, new tank and painted bits to go with it. The show "fall guy" for drama was most of a 4 into one system, without silencer.
Que explanation by Mike as, rare as hen's teeth, impossible to buy, no replacement made of the 4 pipe system needed to complete. He'll get on the blower to "World wide" contact network to see if he could locate such unicorn items  :)
Cut to later round up, he'd located a chap called David Silver no less !! and found none available to supply for another 5 months  :-\ but good news, customer had returned a set he didn't need  ;D that could be purchased for a reduced £900 yay, pipes arrived, Elvis fitted them,  set final drama of the " will it start, won't it start" shenanigans just for the punters you'll understand. 
On the button, first time........but looks like a lot of throttle Elvis is using to keep it going there :o

Sold via bidding to happy new customer.

Cut to real target, Caterham super 7 for happy ending. Aaaaaah.

Oh, and the alignment of #4 downpipe looked, ahem, not quite matching other pipes, that's just from a quick look in telly land editing.  Probably why they were returned to DS if that's definitely there.

Reg no PMF 115R and thought they said a 1972 model, painted fork ears too, likely a bitsa. Thought it had K2 top yoke and clocks, possibly.

7
Misc / Open / Technical appreciation
« on: March 28, 2023, 12:00:30 PM »
For those interested in deeper examination of mechanical parts within some engines

https://youtu.be/F39gjxxGHfY

Warning, for the impatient it may not be for you  :) slow delivery but a very lucid look at this element of engineering from Brian Garvey.


8
SOHC Singles & Twins / Replacement fork triple clamp
« on: March 13, 2023, 07:35:09 PM »
Unsure if posted already https://youtu.be/9mj7plpnemw as title with someone making available new part to substitute for damaged/ no longer available items.

9
CB750 / CB 750 Profile
« on: March 02, 2023, 07:50:28 PM »
https://youtu.be/s6SzJsHOR9o

Looks interesting,  haven't watched it through yet.

10
I love this era superbike racing, pretty good looking modern build

[ Guests cannot view attachments ]

Link to site https://ultimatemotorcycling.com/2014/10/17/freddie-spencer-tribute-cb1100-benefit-ride-kids/ as its built for charity auction.


11
The Black Bomber Board / Bike for sale
« on: January 18, 2023, 10:37:23 AM »
Possibly of interest to someone https://youtu.be/wCpd_yaw5OI no connection to me, but came up on associated interests while listening to music.

12
Misc / Open / Electric bikes discussion.
« on: January 09, 2023, 09:18:53 AM »
It's a fairly short article, but does illustrate just how much of a challenge it is to match combustion fuels in numbers that attempt to operate in the same performance field https://www.crash.net/motogp/feature/1018665/1/triumph-electric-power-let-s-not-kid-ourselves

In an ideal situation these developments and consideration would have happened 20~30 years ago, in which case decisions wouldn't be in such a forced state now and with more evolved solutions to accomplish differences in end user profile.

I've put the race link here as I believe it offers more open comparison of raw capabilities in direct numbers than alot of the consumer facing fluff that's put out currently. 

13
Misc / Open / 1974 Grand Prix racing photography
« on: January 06, 2023, 08:00:40 PM »
Some really cool images from French GP

https://youtu.be/17g6xTsIM9Y

 :)

14
Misc / Open / Monster posting.
« on: September 22, 2022, 02:22:56 PM »
Looking at Ken's thread on disc brake material, I was doing a little digging in such topic and came across this on the  .net Honda forum http://forums.sohc4.net/index.php?topic=109502.0  :o :o :o ;D

It's about the thirteenth post in the thread, quite an adventure by all accounts  :)

15
Misc / Open / Bimota HB1
« on: April 26, 2022, 04:41:58 PM »
As title, thought this was a lovely looking bike from 750 motor start point.

[ Guests cannot view attachments ]

From this published review https://www.classicbikeguide.com/bimota-hb1/  :)



Pages: [1] 2 3 4
SimplePortal 2.3.5 © 2008-2012, SimplePortal