ESE's works engine tuner

[katinas]

Hartog riding style very different. Thanks Rob.

Maybe it would be interesting, found T. Harada TZ-M 1993 championship engine chart: head volumes 8,2cc from first to last 14 round, but fuel from 5 to 11 round ELF 130 ( all fast tracks). ELF 124 from 1 to 3 round and last part from 12 to 14

Add Yamaha OWH1 rotary valve engine pic, angle 60 and looks like firing is at the same time in both cylinders.

[guyhockley]

Yes, good idea, I will try that.

Have scoped things before but the rapid changes in Frequency (read RPM) makes it hard to adjust the time base so I can see the trace properly.

It is very hard to hold the RPM steady and synch the scope. Maybe I need to work it the other way around by setting the time base for 200 Hz and then revving the bike around 12,000 RPM. That way the trace will steady up at the target point instead of continuously running to the left or right across the screen. Either way its hard work and the trace is only readable over a narrow RPM band. Synchronization becomes a continuous moving target and has me working like the proverbial one armed paper hanger.

Anyway your suggestion makes very good sense and I will try it. Maybe there are more suitable scopes ........

Maybe you should give up all this nonsense and go to the next stage of induction technology...

[TZ350]

.

........ well it is tempting because we do have some of those Tillotson pumper carbs.....



Like this the old Suzuki GP125 made 28 rwhp. Just need to attach another two and we would be onto a winner. ....

[chrisc]

Took 6th and 5th at Assen this weekend in the Freetech championship which I'm over the moon with considering the pace of the bikes around me. And met some more really awesome Dutch racers. A number of the 2 stroke nuts have commented on visiting the kiwibiker forums when they hear I'm from New Zealand. For both this thread, the chassis thread and the foundry thread which I think is so damn cool.

[F5 Dave]

That looks fun Chris.

[chrisc]

It really, really was Dave. I drove up from Croatia where I missioned down to in the long June break between events and the whole drive back I thought maaaaan I'm going to get my ass kicked. You see how much of that track is full throttle? And there are some faaaaaast 50s in that field. The challenge was fun and blowing my low expectations to pieces made it even more fun. Tonight we pulled an old Honda MB 50 out from under a shelter style shed which had been shitting for around 5 years. It has the paris dakar style body work to it and my team mate Roland rallied it around a grass track circuit back in the day. Started 3rd push! Thought about you and Malcolm the whole time. The only nuts still willing to fettle one of those slugs.

[husaberg]

It really, really was Dave. I drove up from Croatia where I missioned down to in the long June break between events and the whole drive back I thought maaaaan I'm going to get my ass kicked. You see how much of that track is full throttle? And there are some faaaaaast 50s in that field. The challenge was fun and blowing my low expectations to pieces made it even more fun. Tonight we pulled an old Honda MB 50 out from under a shelter style shed which had been shitting for around 5 years. It has the paris dakar style body work to it and my team mate Roland rallied it around a grass track circuit back in the day. Started 3rd push! Thought about you and Malcolm the whole time. The only nuts still willing to fettle one of those slugs.

MT50?

[chrisc]

Unsure what the original pipe looked like as this one has been raced. I think it might have been a Holland only fairing model. But yeah probably MT50 not MB50. Same turd of a thing which only a wellingtonian would polish

[Muhr]

Unsure what the original pipe looked like as this one has been raced. I think it might have been a Holland only fairing model. But yeah probably MT50 not MB50. Same turd of a thing which only a wellingtonian would polish

MB5 was quite popular when I grew up here in Sweden

http://japan.webike.net/moto_news/honda-mb50/

[F5 Dave]

Ha. I had a few MB50s. Went real well.

[SwePatrick]

This new 50cc cylinder from Bidalot has reached 20hp according to this videoblog:

https://www.youtube.com/watch?v=LIk7...ature=youtu.be

[TZ350]

Took 6th and 5th at Assen this weekend in the Freetech championship which I'm over the moon with considering the pace of the bikes around me. And met some more really awesome Dutch racers. A number of the 2 stroke nuts have commented on visiting the kiwibiker forums when they hear I'm from New Zealand. For both this thread, the chassis thread and the foundry thread which I think is so damn cool.

Hi Chris, great to watch your adventures in Europe.

Awsom video, thanks, and it is interesting to hear that people are reading some of the Bucket threads and enjoying them.

[husaberg]

Took 6th and 5th at Assen this weekend in the Freetech championship which I'm over the moon with considering the pace of the bikes around me. And met some more really awesome Dutch racers. A number of the 2 stroke nuts have commented on visiting the kiwibiker forums when they hear I'm from New Zealand. For both this thread, the chassis thread and the foundry thread which I think is so damn cool.

Hydraulic clutch as well? tre chic......

Unsure what the original pipe looked like as this one has been raced. I think it might have been a Holland only fairing model. But yeah probably MT50 not MB50. Same turd of a thing which only a wellingtonian would polish

that pic is def a MB5
well at least, wheels, forks. and shocks
but the bodywork is all its own.

[Grumph]

Hartog riding style very different. Thanks Rob.

Hartog's riding style was indeed very different. Mike Sinclair in his book mentions that they could use very hard brake pads on Will's bike as, coming from an agricultural background, he had exceptional hand strength. To the point where he bent brake levers. They put a wide 16in front on his RG to get the most out of his braking ability.
Apparently when Sheene tried Wil's bike he couldn't get on with the high lever pressures needed.

[chrisc]

This new 50cc cylinder from Bidalot has reached 20hp according to this videoblog:

https://www.youtube.com/watch?v=LIk7...ature=youtu.be

One of the Freetech racers is a test and development rider for Bidalot. Given what I’ve seen on track and spoken with him, I’d believe that. Keep in mind it requires all the other parts balanced properly to make it happen too.