ESE's works engine tuner

[Yow Ling]

you sure you wernt using that tub of vaselene in the background, its lubrication properties are best known in other sports

[Bert]

Er siezeures are boring was it to subtle
btw if you can show me a oil that actually works better "as a lubricant" than a Castor based oil i would be keen to see it.
Maxima 927 has supposedly the same smell.(mmmmm....Sweet) is less dirty and gummy yet still retains the unique castor properties.

I tried this stuff (mainly to re-live the smell of Castor); i was really happy with it:
http://www.klotzlube.com/techsheet.asp?ID=44
and the slightly better version:
http://www.klotzlube.com/techsheet.asp?ID=48

Castrol R30 is still available at most Kart stores.

[husaberg]

you sure you wernt using that tub of vaselene in the background, its lubrication properties are best known in other sports

.........Fork oil?

I tried this stuff (mainly to re-live the smell of Castor); i was really happy with it:
http://www.klotzlube.com/techsheet.asp?ID=44
and the slightly better version:
http://www.klotzlube.com/techsheet.asp?ID=48

Castrol R30 is still available at most Kart stores.

I actually prefer A747 as it still has a little Castor.and is made for rs125 and similar But i will try the Maxima
There was a thread somewhere here where someone talks about being at the Castrol test centre running ac 125 flat out on a dyno at silly oil ratio's The A747 survived the best.

[Yow Ling]

btw if you can show me a oil that actually works better "as a lubricant" than a Castor based oil i would be keen to see it.
Maxima 927 has supposedly the same smell.(mmmmm....Sweet) is less dirty and gummy yet still retains the unique castor properties.

tricky wording there "as a lubricant" what does that mean, Castor bean oil forms waxy varnish like deposits in the engine so the engine can run for a short period without lubrication, but those deposits also gum up powervalves, not a big problem in 1982 but a bit of a problem now. if you switch over oils while the engine is running it will likley pick up rpms on idle when going to modern oils this would be an indication of less stickyness or better lubrication

Which GP teams were using castor oil untill moto3 took over?

Ill just keep with old faithfull TTS for now. What you going to run in the Vanessa Honda Superbucket?

[husaberg]

tricky wording there "as a lubricant" what does that mean, Castor bean oil forms waxy varnish like deposits in the engine so the engine can run for a short period without lubrication, but those deposits also gum up powervalves, not a big problem in 1982 but a bit of a problem now. if you switch over oils while the engine is running it will likley pick up rpms on idle when going to modern oils this would be an indication of less stickyness or better lubrication

Which GP teams were using castor oil untill moto3 took over?

Ill just keep with old faithfull TTS for now. What you going to run in the Vanessa Honda Superbucket?

Yeah it is tricky wording but i was meaning as a lubricant the resistance to seizing.
The vanish is a red herring for the motor should be stripped often for it is a competition bike after-all. Not a road bike

Er which GP team was using the sponsors oil at all. That you will have to ask them.
Mind you it was odd that they had castor oil around to coat the pipes with?

Castrol A747 for vanesa and then maxima 927. That is assuming it ever gets it finished mind you.

TTS i use in my son's bikes (mx).

Ram Air
Yes practically useless on a bucket but topical on the Pitlane thread.
This follows on from the other stuff i posted a couple of weeks ago regarding air boxes.
If you recall it mentioned an interesting rig Leon Moss built up with a Ford motor and turbo charger.

OK i am not really sure how much actually applies to the two strokes but it is interesting nevertheless.

[Kickaha]

Castrol A747 for vanesa and the maxima 927.

A747 doesn't seem to have any problem with gumming power valves but isn't full castor, pretty pricey oil to be running though

[speedpro]

.........There was a thread somewhere here where someone talks about being at the Castrol test centre running ac 125 flat out on a dyno at silly oil ratio's The A747 survived the best.

Which is all good if you want to try running 100:1 or expect to add plain 100 octane to a tank of premix and then try for some hot laps.

What some people overlook is if they decide to run "lots" of oil in the fuel then when that thicker mix tries to get through the main jet a slightly lower volume will get through plus within that volume a smaller % will be petrol.

So they add "heaps" more oil, and immediately seize because it's now lean. Only a problem if the motor is close to the edge anyway. Going from 40:1 where fuel is 97.56% of the mix, to 20:1 where fuel is only 95.24% of the mix, with no other changes results in a slightly more than 2% leaner fuel mixture. That's a miniscule jet size change, but . . . .

The only time I think you need lots and lots of oil is if you are revving the motor heaps and the oil is being blown out. At smaller throttle settings and lower revs you can reduce the amount of oil added to the fuel. When my son got his KX80 I mixed it at 80:1. When checked the motor was plenty oily because he was just puttering around in a paddock.

[Sketchy_Racer]

When I used to run the air cooled MB100 motor, I found that it ran much better and cooler using a 20:1 mix with motul 800. If I ran 40:1 and jetted to suit it would run great for the first two laps then get to hot, with 20:1 it would make what felt like the same amount of power but wouldn't suffer the heat issues as much. FWIW

[speedpro]

Extra oil would have helped piston sealing, probably. My old air cooled MB used to fade a bit as well.

[TZ350]

We use 20:1 for a different reason, it cuts out mixing mistakes.

We buy a 12 box of 1L oil packs and our gas in 20L drums. As soon as we get a new drum of gas in goes 1L of oil, no calculations or messing about.

20L drum of gas 1L pack of oil, job done no mistakes, anyone can do it and get it right.

[husaberg]

Which is all good if you want to try running 100:1 or expect to add plain 100 octane to a tank of premix and then try for some hot laps.

What some people overlook is if they decide to run "lots" of oil in the fuel then when that thicker mix tries to get through the main jet a slightly lower volume will get through plus within that volume a smaller % will be petrol.

So they add "heaps" more oil, and immediately seize because it's now lean. Only a problem if the motor is close to the edge anyway. Going from 40:1 where fuel is 97.56% of the mix, to 20:1 where fuel is only 95.24% of the mix, with no other changes results in a slightly more than 2% leaner fuel mixture. That's a miniscule jet size change, but . . . .

The only time I think you need lots and lots of oil is if you are revving the motor heaps and the oil is being blown out. At smaller throttle settings and lower revs you can reduce the amount of oil added to the fuel. When my son got his KX80 I mixed it at 80:1. When checked the motor was plenty oily because he was just puttering around in a paddock.

Gee did you read my post's Mike?
i seriously doubt there is anyone on this thread who isn't aware of the viscosity change with oil fuel mixes.
So i am not sure of your point but suffice to say the Castrol oil test centre is aware of it at least.
For Reference the 'silly" oil ratios were up to 300:1 and the life expectancy was minutes. But i guess Castrol was always going to be a little biased towards their own products.
I always in the buckets ran 20:1 A747 has it was getting a thrashing negligible oil build up in pipe bugger all carbon.

Anyone care to actually say what the Gp bike ran and their were ratios they certainly smelled Castor Bean sweet....Wob..Frits.. Jan... Lozza?

[TZ350]

Mt Welly today was showers wet and cold with a very slippery track.

After some frustration in the pits with the Beast Kel had to start of the back of the grid but he still managed a 3rd and a 4th in the A grade points races, a good effort by anyones standard. The handling changes worked and the motor held together, so all in all a good start to the new season.

[Yow Ling]

Gee did you read my post's Mike?
i seriously doubt there is anyone on this thread who isn't aware of the viscosity change with oil fuel mixes.

its not the viscosity that changes, just the volume of petrol as a percentage of the total volume going through the jet

[husaberg]

its not the viscosity that changes, just the volume of petrol as a percentage of the total volume going through the jet

Disagree with you Mike my understanding is the increased amount oil makes the mixture leaner, as it allows a smaller volume of petrol to pass through the jet.But could be both?
One simple way to see is to get 1 ltr of fuel mix at 20:1 and run it through a mainjet at the bottom of the container and then compare it to 1 ltr of fuel mix at 100:1 time the results and see.

A typical example: you go from a 50:1 ratio to a 20:1 ratio. Your engine will now run leaner, and you’ll have to make jetting changes. You’ll need bigger (in number) jets because the oil molecules are thicker and the flow rate (the amount coming through the jet) is less.

Aha! The volume of fuel has changed. The oil takes up some volume that the gas used to occupy, so your engine is getting less gas and needs to be richened up.

http://www.off-road.com/dirtbike/tec...ios-20502.html

[bucketracer]

Mt Welly today was showers wet and cold with a very slippery track.

After some frustration in the pits with the Beast Kel had to start of the back of the grid but he still managed a 3rd and a 4th in the A grade points races, a good effort by anyones standard. The handling changes worked and the motor held together, so all in all a good start to the new season.

It was a very strong cold wind and wet at Mt Wellington, but it was funny to see TeeZee getting all excited as Kel cut through the field on the Beast.

In the first points race the winner was only just ahead, in the second, working their way through the back makers spread the leaders out a bit, maybe half a lap at most between the eventual winner and Kel at the chequerd flag.

If TeeZee can make the Beast a bit easier to ride then it should be a real weapon.