ESE's works engine tuner

[gav]

Huh? How could a four stroke NR500 ever sound like a two stroke NSR? If any thing it would sound like 2 VFR400's

[husaberg]

Huh? How could a four stroke NR500 ever sound like a two stroke NSR? If any thing it would sound like 2 VFR400's

I guess because it was because it was running at 22-28000rpm depending on who you ask fredy say 22 some net stuff says way more 28 .
It still only had four cylinders . I just assume its a frequency and pitch thing.Or it could be crap I don't really know. Not sure of the firing order they ran or the pipe configeration either.The valves I would think would take the sharpness out too maybe this is less with a 8 valve head. Crikey I don't know, but a cbr250 at 18000 don't sound like a nsr250 at 9000 either.I looked on the net and can find nothing about the sound of it other than most resembled a nr500. Maybe try playing a audio of V four for victory at 2x speed as an experiment as the NR500's are a bit thin on the ground around here. Mine needs a rebore but I cant find any o/s rings for it. The Honda dealer says........

I did find this so have a listen sounds like a bit of both to me but the nsr pre big bang sounds so much better it makes the nr sound like an old nail, shit nice site.listen to the videos of the bikes and check out the forks and radiator on the nr500

http://world.honda.com/MotoGP/histor.../02/index.html

[F5 Dave]

I was implying that the cheater supercharged 2 stroke I eluded to would sound like a 4 stroke as it was breathing through valves at the top of the head rather than holes in the bore being opened by a piston.

While we are off topic & on cheating engines; does anyone remember that turkey that was doing the water into fuel scam in NZ a couple of years back when petrol reached $2? Typical TV journalist couldn't see the sleight of hand. He had some GSXR engine he'd converted to run on this processed water mix. Of course when they did get someone to put it on a gas anayliser it seemed to produce emissions not too dissimilar to a petrol engine. I think he explained it away as oil usage.

Straight away I'd assumed he'd pulled a gear or two out & jammed a can of ether in the cases with a tiny jet to the inlet ports, but now I think I remember him crash starting it & riding it down the road. About as far as one might get on a can, but I now think he lazily stuffed under the starter motor cover. Wonder if he got many investors in his save the world get rich quick business?

[Grumph]

Phil Irving told a good story....Melbourne in the 30's. ecomomy runs were big - and betting as usual for Aussies pretty good too. All the smart money for the Spring competition was on Ausin 7's and similar. A guy with a Sidevalve Essex won it outright with somewhere round 90mpg....Phil said he only found out many years later how it was done. Slack valve guides and petrol in the sump....carb had been leaned out to the max to compensate. And the rules said that on the alloted route you could top up the "oil". Petrol in an oil can obviously.

The bookies took a hammering.

[F5 Dave]

Nice. wouldn't have done much for the condition of the engine & that's be worth a bob these days. Still, initiative has to be admired, much as I deplore cheating.

[koba]

Phil Irving told a good story....Melbourne in the 30's. ecomomy runs were big - and betting as usual for Aussies pretty good too. All the smart money for the Spring competition was on Ausin 7's and similar. A guy with a Sidevalve Essex won it outright with somewhere round 90mpg....Phil said he only found out many years later how it was done. Slack valve guides and petrol in the sump....carb had been leaned out to the max to compensate. And the rules said that on the alloted route you could top up the "oil". Petrol in an oil can obviously.

The bookies took a hammering.

Fantastic!

My Grandad had examples of each of those, he said the Essex was a real hot bit of kit at the time...

[wobbly]

Guess where that piece of brass will be sitting next week, when I get a jig to machine the cover.

[TZ350]

I got a bit of a look around Wobblys workshop today when I picked up some motor parts, interesting place.



Wob here is the photo of my 2 channel SE amp that I made from scratch, the drivers are not quite in the same league as your 300B's but they have carbon plates and were made in Russia, copy of RCA 813's. The black finning is heat sinking for the DC filament supply, so no balancing for hum required. The meter is for setting bias current. Being pentodes the drive for the grids is less than 1 Watt, so only a small driver valve required.

[husaberg]

Attachment 246593

Guess where that piece of brass will be sitting next week, when I get a jig to machine the cover.

Nice Work Wob
Out of interest did the Gp bike run this configuration and do you have and pics of the Yamaha years.
The first engine I seen with similar design head (not Brass) was the RR250 Hardly Davidson (Aermacchi)

Below is the Chocolate fish crankshaft of the day anyone keen to name it?
Hint its out of a 500 GP bike engine pm your answer

http://motorcyclephotooftheday.com/category/konig/
http://www.gyfootwear.co.uk/gy_hobbi...%20kneeler.htm
http://www.google.co.nz/imgres?q=kon...3&tx=102&ty=31
http://www.apriliaforum.com/forums/s....php?p=1790145

[Yow Ling]

I got a bit of a look around Wobblys workshop today when I picked up some motor parts, interesting place.



Wob here is the photo of my 2 channel SE amp that I made from scratch, the drivers are not quite in the same league as your 300B's but they have carbon plates and were made in Russia, copy of RCA 813's. The black finning is heat sinking for the DC filament supply, so no balancing for hum required. The meter is for setting bias current. Being pentodes the drive for the grids is less than 1 Watt, so only a small driver valve required.

Nice work TZ , its got that "Lost in Space" look about it, Is that little tube at the front gassed, looks like the getter has gone white in the picture.

[TZ350]

Yes tube is gassed, bumped it and must have damaged it straightening the pins, it was a Telefunkin Diamond .......

[wobbly]

Crank is a flying web, the only one I can think of is the original Swiss Auto - that became the Pulse 500 several years later.
But the Pulse crank/rods looked alot different.
The first skull insert head I saw was a 100cc Parilla kart engine about 30 years ago.

I had thousands of pics I took when Sinclair and Benson would let me into the closed garages, but they were all lost when my laptop was stolen at Buckleys.

Here is a pic of my current amps.
Scratch built Atmasphere OTLs,32 bit Twisted Pear Buffalo CD with Philips Pro drive player and Bastanis Atlas open baffle speakers.

Edit - would never have guessed it was Newcombs Konig - I didnt know that was a flying web, no wonder they had huge dramas keeping the crank together.

[kel]

Wobbly is currently working on Yowlings RG125 hybrid so thought I'd drag out the RG150 for comparison. As far as I’m aware the bottom end is the same between the 125 and 150. First thing I like about the 150 is the centre plug so no fancy machining required. Surprisingly the transfer ducts aren’t overly large, thought they would require some serious filling but maybe not. Also like the wider exhaust port bridge with the water duct passing through it plus the 3 piece exhaust valves. What’s not so cool is that the cylinder has an iron liner (not sure if its coated), to replace it for 50mm bore would mean a seriously thick iron liner. Maybe that hybrid is the way to go.
So whats the copper coating in the port ducts?

[jasonu]

So whats the copper coating in the port ducts?

Are you sure it isn't dried up coolant spooge from sitting in a box under someones house for 100 years?

[TZ350]

MAHLE engine failure manual

http://www.mahle.com/C12572E60048082...5ULLE756STULEN