Oddball engines and prototypes

[Niels Abildgaard]

Hello tjbw and Grumph

I have found a rough guide in specifications for a cbr 600 rr.
Exhaust valve must be around 25 mm,made of steel and engine rpm limit at 15000.That is 7500 rpm for a Twostroke.
The thread here is not racing but odball-engines,so I just dream on.
The limits in racing was always so and so many ccms but for common people engine mass ,compactness,noise,fuel consumption and price was more important.
Chain saw engines comes to mind.Does some here know internet sites addicted to tuning chain saws?

[husaberg]

Chamberlain 2 stroke
http://justacarguy.blogspot.co.nz/20...ylinder-8.html
http://primotipo.com/2015/07/24/cham...d-mark-bisset/

[WilDun]

Chamberlain 2 stroke

Found this in Husa's second link, seems like it's a quote from the Bible :-

That which hath been is that which shall be; and that which hath been done is that which shall be done; and there is no new thing under the sun. Is there a thing whereof men say ‘See, this is new?’ It hath been already in the ages that were before us....
- Ecclesiastes.

Have they found the Ryger yet? - bet it was buried somewhere in Holland and Harry just happened to stumble across it!

[ken seeber]

Thanks for that Husa, another couple of hours spent getting distracted, one youtube leading into another youtube.

Welcome back Willy, you obviously made a successful escape back into NZ from Oz, the home of the Chamberlain and many other great and dumb things.

Now fellers, don't tell Fletto (alias Uniflow) about the chamberlain, he's got enough on his plate.

[Frits Overmars]

Now fellers, don't tell Fletto (alias Uniflow) about the chamberlain, he's got enough on his plate.

I don't think Flettner will be too distracted by the Chamberlain uniflow engine; he already built a much better version some time ago.

[WilDun]

Welcome back Willy, you obviously made a successful escape back into NZ from Oz, the home of the Chamberlain and many other great and dumb things.

Thanks Ken, was on my way over to see you but I got as far as Canberra and decided to call it a day (was I on the right road?).
Enjoyed my short visit, ie till my left hip (of three and a half years) decided to play up big time seemingly by too much walking.
That sure as hell stymied things a little! - just managed to get back on the plane and needed a wheelchair at both ends, still hurts but will have to wait for up to 6 weeks to get back to how it was (are you listening Flettner?).
Luckily it seems that everything is still intact and the bad pain is caused by scar tissue on the tendons.
Beside all that Aussie was fine (if a little hot!).

No more workshop for a while!

[Flettner]

Thanks Ken, was on my way over to see you but I got as far as Canberra and decided to call it a day (was I on the right road?).
Enjoyed my short visit, ie till my left hip (of three and a half years) decided to play up big time seemingly by too much walking.
That sure as hell stymied things a little! - just managed to get back on the plane and needed a wheelchair at both ends, still hurts but will have to wait for up to 6 weeks to get back to how it was (are you listening Flettner?).
Luckily it seems that everything is still intact and the bad pain is caused by scar tissue on the tendons.
Beside all that Aussie was fine (if a little hot!).

No more workshop for a while!

You need a ceramic / titanium unit like mine Good for 25 years they say. NOT if I keep doing enduros.
I'm about to see a physio about my hip tomorrow, too much gym and it does hurt a bit, best I LISTEN to what they say. Wife wonders why I'm wasting my time as "you know it all anyway" , do you think thats a dig at me?

[Grumph]

You need a ceramic / titanium unit like mine Good for 25 years they say. NOT if I keep doing enduros.
I'm about to see a physio about my hip tomorrow, too much gym and it does hurt a bit, best I LISTEN to what they say. Wife wonders why I'm wasting my time as "you know it all anyway" , do you think thats a dig at me?

No, it's a generic thing, they all say that. I just say, "yes dear, you're right as usual...."
Your mate Nev stayed the night last week on his way to the Burt...it turned into a very late night indeed...

Re the Chamberlain, I first saw that written up in the 60's. Thought at the time that WA in the period was probably devoid of much of interest so occupying yourself building a GP car made an interesting hobby. If Burt Munro had TV would he have built what he did ?

[J.A.W.]

Last point to add re the 90* even fire scenario, is that if the vibration issue could be addressed,then we have the grip and rider feel advantages
with this setup that is seen in a 90* V4 and the crossplane M1 that fire 4 times every 2 revolutions.
As two pistons are at TDC or BDC the other two are at 1/2 stroke, thus the inertia torque from the crank is virtually cancelled out.
As this inertia torque is of greater magnitude than the combustion forces below 4000 and above 14,000 in a big 4T, having this effect removed from
the forces acting on the rear tyre will have the same advantages in a 4 cyl inline 2T firing 4 times every revolution as well.

Cheers for the considered feedback on the even-fire 'crossplane' subject Wobbly, (which concurs with the views Frits had, earlier on).

& AFAIR, the 4 cyl 1000cc unit cobbled from the Kawasaki H2 also used a 90`crank, so I expect the 5 cyl was at 72`, for
a 5-star 'crossplane' even-fire crank configuration, like-wise.

[tjbw]

http://carzz.co/roadog_190195.jpg

At 17 feet (5.2m), 3280 pounds (1.49 tonne), is this the longest, heaviest bike ever?

[WilDun]

You need a ceramic / titanium unit like mine Good for 25 years they say. NOT if I keep doing enduros.
I'm about to see a physio about my hip tomorrow, too much gym and it does hurt a bit, best I LISTEN to what they say. Wife wonders why I'm wasting my time as "you know it all anyway" , do you think thats a dig at me?

I thought for three and a half years that they were perfect for me and would see me out! That was not to be unfortunately - one completely seized up when it became infected - that was that, so they removed the ball, cleaned it out and replaced it giving me a horrendous one and a half weeks in hospital! (just got back home) - nothing mechanically failed in the joint, still perfect but infection is another thing entirely!

Dunno about your hip joint but apparently they are all suceptable to infection - although relatively rare, it can happen (as in my case) and is causing me to consider closing up my little amateur workshop, which even a month ago would have been totally unthinkable!

My advice to you is, be careful because even small infected nicks and knocks anywhere on the body, which you will easily get around the track and workshop can cause BIG problems!

[ken seeber]

Hey Willy, yung fella, good to have you back.
Yes, the key thing to life is staying alive. So if you put things on hold (I didn't say get rid of ) for a bit that's ok.
I'm sure Fletto will keep you interested until you get back into it.

[Flettner]

I thought for three and a half years that they were perfect for me and would see me out! That was not to be unfortunately - one completely seized up when it became infected - that was that, so they removed the ball, cleaned it out and replaced it giving me a horrendous one and a half weeks in hospital! (just got back home) - nothing mechanically failed in the joint, still perfect but infection is another thing entirely!

Dunno about your hip joint but apparently they are all suceptable to infection - although relatively rare, it can happen (as in my case) and is causing me to consider closing up my little amateur workshop, which even a month ago would have been totally unthinkable!

My advice to you is, be careful because even small infected nicks and knocks anywhere on the body, which you will easily get around the track and workshop can cause BIG problems!

Now you are just frightening me, I thought I was told after about a year and a half the thing sort of grew a sealed cover over it to protect it? Then, I can really cut loose

[WilDun]

Now you are just frightening me, I thought I was told after about a year and a half the thing sort of grew a sealed cover over it to protect it? Then, I can really cut loose

Well, you do that!
Me? - back into hospital again - this time the medication went totally awol! just got out again yesterday evening,with my fingers crossed.
Unlike you, I'm now a fragile old man (at least that's how it appears at the moment) and I won't be pushing the boundaries anymore!
Three months of intravenous medication ahead!

[WilDun]

Hey Willy, yung fella, good to have you back.
Yes, the key thing to life is staying alive. So if you put things on hold (I didn't say get rid of ) for a bit that's ok.
I'm sure Fletto will keep you interested until you get back into it.

Thanks Ken, will just have to bide my time.