Two-stroke performance tuning?

[TZ350]

The Steadman mods from 2 decades ago, no doubt they are still very competitive bikes but there's better material to work with if going for the water cooled 100.

Better material for a water cooled 100, I was going for a sleeved down RGV250 cylinder complete with power valves etc for mine. RGV250 or TZR were these what you had in mind?

Chambers is going the RG400 cylinder way, and we would be very interested in how the Steadman's went about it and how they moded the RG400 cylinders for their engines. We would love to know more about what Pete Sales did with his too, if anyone has any information on them.

[jasonu]

Better material for a water cooled 100, I was going for a sleeved down RGV250 cylinder complete with power valves etc for mine. RGV250 or TZR were these what you had in mind?

Chambers is going the RG400 cylinder way, and we would be very interested in how the Steadman's went about it and how they moded the RG400 cylinders for their engines. We would love to know more about what Pete Sales did with his too, if anyone has any information on them.

I purchased Ken Steadmans Rat motor, complete with a car (HQ Holden I think) heater coil for a radiator, a few (lot of) years back. The word agricultral comes to mind. However, it did show me it can be done.
Jimmys and Peters motors looked a lot nicer from the outside.
Anyone know what happened to Jimmys bike?

[F5 Dave]

Nothing 'happened' to it. It's where it's always been ready for him to pull it out & scare a few people. He's a bit scared of doing another collarbone & time is against him (in the sense of finding any) I think.

[speedpro]

Jim's bike is stored away all ready to go. Being a one-man farm sort of guy he can't afford to damage himself so even if he came out for a play he'd be a bit subdued. Though . . . . . if anyone can remember him riding at the Hamilton track round the polytech(?) he was taking it easy , and still sliding it up to the curb every lap on one corner. That old thing does handle good that's for sure though and the brakes are brilliant.

[bucketracer]

Some supercharged 50's and others, any guesses which one is supercharged with a Turbocharger............

There is also a supercharged and water cooled British 1936 2-stroke Scott and a supercharged air cooled 1937 DKW racer............

Now would water cooling on the British bike be a more advanced option for a supercharged 2-stroke?.................

[Gigglebutton]

That is your Google search, internet based assessment …… the difference between the theory and experience is massive.

It’s pretty obvious no one knows it all and someone who won’t research things is bound to keep repeating his old mistakes.

If there are any factory workshop manuals for common modern road bikes of any era or even an exotic one that insists on a Torque Plate during rebuilding/reboring/reconditioning I would truly love to see a quality post about it complete with a PDF scan and/or a link or two.

No, .... a fretted imprint maybe and a very good example of what Bucket has been talking about.

Attachment 247179 Click the picture to read the text.

SS90 this is the page you quote in your reference, and no doubt it’s the combined real life experience of a lot of people who work in the automotive industry who have analysed many engine failures and determined their cause.

Now tell me, does your page say melted appearance and misaligned (bent) rod as a possible cause just like Bucket has been saying, yes it does.

And do you see any reference to a jammed clip, nope you don't do you.

SS90 I too would like to know if there are any factory manuals that require torque plates and what is your take on that page you quoted, does it say melted appearance, possible misaligned rod and I can’t see where it says jammed clip, can you please point me to it.

[bucketracer]

That is your Google search, internet based assessment ....... Many is the spotty little kid that comes into a workshop, fresh from his education, that soon realises the difference between the theory and experience is massive.

What you say is true, although not very nice or smart.

I have spent a lot of time with dad in the workshop and I am smart enough to know my limits, so in my posts as well as writing about what I have learnt, I like to research and reference other people with real industry experience and something credible to say, if I get stuck TeeZee or Thomas are always able to point me in the right direction.

TeeZee's Suzuki GP125 Bucket.

I don't require people to believe me and figure that anyone who is inquiring enough to follow the links is also intelligent enough to make their own judgment.

Posts on the internet are like talk anywhere, some people are full of it, others have something worthwhile to say, and by now you should know from personal experience, people can usually figure it out.

[koba]

people can usually figure it out.

Sadly it often takes a while, bullshitters generally get quite good at their craft through years of experience.

[bucketracer]

I have been looking through this old thread again.

[crazy man]

l might restart on my 2 stroke l started 15 years ago. tf100,water cooled , reed block, short stroked. may stick with the centre hub steering frame don't know yet

[bucketracer]

It would be very great to see the center hub out there, Buckets is getting a great mixture of bikes, definitely the most interesting RR class.

[crazy man]

It would be very great to see the center hub out there, Buckets is getting a great mixture of bikes, definitely the most interesting RR class.

thats what a like about buckets even f3 was not to bad but rulzs keep changing and puts you of spending alot of time on building somthing that may not be alowed a year or two down the track

[jasonu]

l might restart on my 2 stroke l started 15 years ago. tf100,water cooled , reed block, short stroked. may stick with the centre hub steering frame don't know yet

Are you the guy from the south pole that ran a center hub steer in the early mid 90's?

[crazy man]

Are you the guy from the south pole that ran a center hub steer in the early mid 90's?

l borrowed one in 2001 and raced it at the gp and is still in the shed lol started making 4 off them but well of finshing. not from the south pole. think this one was build in 1980

[speedpro]

think this one was build in 1980

In a farmhouse out the back of Ohakea by a bloke named Colin Wheeler. He was later "2 Wheels Engineering" in Palmy North I think. He cast the hub and other bits in a tin heated by a LPG burner of some sort. Very back yard Kiwi sort of thing.