Honda-SOHC

SOHC.co.uk Forums => CB350/400 => Topic started by: Bodd on May 16, 2015, 11:31:22 AM

Title: V8 !
Post by: Bodd on May 16, 2015, 11:31:22 AM
The guy who built this posted it on the Japanese Vintage Bike Club FB page this morning, he hasn't started it yet but i would like to hear it when he does.

[attachimg=1]

Title: Re: V8 !
Post by: LesterPiglet on May 16, 2015, 11:34:00 AM
Yeah, I'm following it. I'll believe it when I hear it run.
Title: Re: V8 !
Post by: Norniron on May 16, 2015, 11:37:09 AM
Wheres the carbs?
Title: Re: V8 !
Post by: Trigger on May 16, 2015, 11:39:24 AM
Wheres the carbs?

like any V, between the cylinders  ;D
Title: Re: V8 !
Post by: Norniron on May 16, 2015, 11:40:35 AM
Wheres the carbs?

like any V, between the cylinders  ;D

Micro carbs then
Title: Re: V8 !
Post by: LesterPiglet on May 16, 2015, 11:41:46 AM
It would need to be FI.
Title: Re: V8 !
Post by: Trigger on May 16, 2015, 11:44:32 AM
Wheres the carbs?

like any V, between the cylinders  ;D

Micro carbs then

Or one carb with a 8 bank manifold  ;D ;D
Title: Re: V8 !
Post by: mike the bike on May 16, 2015, 12:38:34 PM
Is that one of Alan Millyard's creations?   Regarding the carbs, there's barely enough room to wedge 4 carbs in as it is so perhaps it's fuel injected.
Title: Re: V8 !
Post by: matthewmosse on May 16, 2015, 01:10:01 PM
Awesome. One issue as a daily rider though, the carb(s) or injection kit are doubtless in the tank spacd so the fuel capacity is probably much reduced, and economy worse - I wonder what economy it gets? Still looks well engineered and very clever or very good photoshop.
Title: Re: V8 !
Post by: Bodd on May 16, 2015, 01:19:57 PM
Is that one of Alan Millyard's creations?   Regarding the carbs, there's barely enough room to wedge 4 carbs in as it is so perhaps it's fuel injected.

The builder is called Dominic Labelle.
Title: Re: V8 !
Post by: LesterPiglet on May 16, 2015, 01:39:30 PM
And the extra coils jammed in there somewhere as well.
Title: Re: V8 !
Post by: royhall on May 16, 2015, 02:07:52 PM
Must have hollowed the tank out to take the necessary, probably down to about 1 gallon. Either that or its a really good Photoshop job?
Title: Re: V8 !
Post by: Johnwebley on May 16, 2015, 02:30:58 PM
I hope its a practical build,

 and not a photoshop,
http://thekneeslider.com/honda-cbx-v12-by-andreas-georgeades/
 see these links,the Kwacka I have seen on a tv show,and it looks and runs well,the Honda just looks bulky


http://www.vintagebike.co.uk/pictures/kawasaki-v12-2300cc/#.VVdGaPlViko


Title: Re: V8 !
Post by: Bodd on May 16, 2015, 04:38:51 PM
If it is photoshop he has spent a lot of time at his computer as there are a few photos.

[attachimg=1]
Title: Re: V8 !
Post by: royhall on May 16, 2015, 08:30:49 PM
What about these two babies then.


[attach=1]


[attach=2]
Title: Re: V8 !
Post by: Bodd on May 16, 2015, 09:42:44 PM
What about these two babies then.

I appreciate the engineering but not my type of bike.
Title: Re: V8 !
Post by: LesterPiglet on May 16, 2015, 10:02:23 PM
What about these two babies then.

I appreciate the engineering but not my type of bike.
Great for filtering through traffic.
Title: Re: V8 !
Post by: Bodd on May 16, 2015, 10:57:33 PM
What about these two babies then.

I appreciate the engineering but not my type of bike.
Great for filtering through traffic.

Would be better off in traffic with this.

[attachimg=1]

Title: Re: V8 !
Post by: LesterPiglet on May 16, 2015, 11:33:53 PM
I'd like to buy a chain for my Pugeot please.

What clever dick decided white tyres was a good idea?
Title: Re: V8 !
Post by: Drew400 on May 18, 2015, 02:54:37 PM
I wonder if air cooling is sufficient for this little CB 800 F V8.
Title: Re: V8 !
Post by: Lobo on May 18, 2015, 06:20:29 PM
I'm no engineer, but am just left wondering, "what's the point" of the V8s. I say this because (eg) the 400F frame, clutch, gearbox, wheels, gearbox.... EVERYTHING is bloody designed / stressed for 37BHP / 170Kg & not double that....
So, within a mile or two I guess the clutch will burn out, the rear cylinders overheat, and the frame crack. (sure he'll have beefed up a few extra bits, but I bet a lot of it not)

Hmm...

Nonetheless, Very, very impressive engineering.
Simon
Title: Re: V8 !
Post by: mike the bike on May 18, 2015, 06:40:52 PM
I would have put an extra disc on the front as well
Title: Re: V8 !
Post by: tom400f on May 18, 2015, 09:18:48 PM
Guess the brakes are waiting to be done  ::)
Title: Re: V8 !
Post by: JamesH on May 18, 2015, 10:40:39 PM
I guess the point is...because he could and fancied the challenge. I imagine it has a bespoke crank and uprated internals but who knows...still a superb bit of engineering. Would love to hear it running....
Title: Re: V8 !
Post by: rockvegas400 on May 18, 2015, 11:08:49 PM
The rear bank might have some cooling issues!
Title: Re: V8 !
Post by: Johnwebley on May 19, 2015, 10:56:25 AM
I am guessing,but most of these wonderful projects are to prove they can be done,

 I would guess if it was ridden at around 50 ish,it wouldn't get to hot,

 and the frame,transmission and brakes would cope perfectly well,

 just think of the smile it would produce ,


PS,back around 1970,I thought of fitting two Yamaha YAS1 motors together,a twin crank V4 250 cc

my skill was way below my intention
Title: Re: V8 !
Post by: LesterPiglet on May 19, 2015, 11:11:00 AM
video of the beast.
https://www.youtube.com/watch?v=C_A6A53YMHI&feature=youtu.be
Title: Re: V8 !
Post by: Bodd on May 19, 2015, 11:31:21 AM
Doesn't sound great but I really like that some people have the ambition to take on something like that, I love Allen Millyard's creations and I especially like this RD600 triple engineered by Harry Hawkins.

[attachimg=1]
Title: Re: V8 !
Post by: Drew400 on May 19, 2015, 12:40:22 PM
Wow, I wonder what the power band is like on that. I had an RD400 and hitting 6k was like feeding in a turbo!

D.
Title: Re: V8 !
Post by: Bryanj on May 19, 2015, 04:56:24 PM
Sounds good, except for tickover rattle but as people seem to think the single disc is not up yp a standard 400 not sure about stopping!
Title: Re: V8 !
Post by: Lynx on May 19, 2015, 09:02:54 PM
Superb  :).
Title: Re: V8 !
Post by: florence on May 20, 2015, 08:29:06 AM
what fun!  I think I would have routed the second set of exhaust pipes out the other side. 

Also, I would have started with two 750's because if you are going to be that silly you may as well be extremely silly.
Title: Re: V8 !
Post by: fisjon on May 28, 2015, 04:48:56 PM
Back in the 70's some guy just stuck two CB750 motors in a frame one behind the other and went drag racing!
cool, as they used to say............
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