ESE's works engine tuner

[TZ350]

I could perfect the balance factor for each situation, using titanium slugs opposite the pin…………I did drill out the center of a crank pin a year ago.... essentially the same effect as adding Titanium to the opposite end ...........

Your statement is not actually true.................

I am gob smacked….Wow, you clearly still have no idea of what you are talking about.……....

Thanks to Thomas this subject has been well covered, by Team ESE posts in the ESE and 2-Stroke tuners thread, they included facts and figures, formulas and pictures demonstrating the method and technique of measuring and changing the balance factor of a single cylinder crankshaft

In the interests of robust debate and to quote yourself:-

There is no malice intended.
It's just in the interests of accuracy.
Some people follow this thread in the hope of building a fast bucket, and if some information is wrong, it is prudent to mention it.

[Yow Ling]

Your statement is not actually true.................

I am gob smacked….Wow, you clearly still have no idea of what you are talking about.……....

Thanks to Thomas this subject has been well covered, by Team ESE posts in the ESE and 2-Stroke tuners thread, they included facts and figures, formulas and pictures demonstrating the method and technique of measuring and changing the balance factor of a single cylinder crankshaft

In the interests of robust debate and to quote yourself:-

There is no malice intended.
It's just in the interests of accuracy.
Some people follow this thread in the hope of building a fast bucket, and if some information is wrong, it is prudent to mention it.

Haha shows what u know TZ350, everyone knows that in the German hemisphere that when you need to add weight to a crankshaft weight you remove steel and replace it with much lighter Ti, the real skill however (this is what paybands are set on) is making everyone belive you are right and everyone else is wrong.

SS90 nobody round here gives a flying fuck about your old vespas, the laws still allow us to modify and pollute as we please. So did you copy the wholesalers cranks , or they yours?

[aircooled]

i have a aircooled 125 which has 27.5 rwh, has full circle cranks. but no 4speed box.
i also thought ti was lightweight metal?

[SS90]

Haha shows what u know TZ350, everyone knows that in the German hemisphere that when you need to add weight to a crankshaft weight you remove steel and replace it with much lighter Ti, the real skill however (this is what paybands are set on) is making everyone belive you are right and everyone else is wrong.

SS90 nobody round here gives a flying fuck about your old vespas, the laws still allow us to modify and pollute as we please. So did you copy the wholesalers cranks , or they yours?

Ok, so I meant to type Tungsten, not Titanium, I have already covered Mallory Metal (A Titanium alloy) with a density of 2:1 to steel.

Was I the first to make cranks of this design? Of course not, no more than anyone who designs a new expansion chamber can claim they invented the concept.

[SS90]

i have a aircooled 125 which has 27.5 rwh, has full circle cranks. but no 4speed box.
i also thought ti was lightweight metal?

Yes, I meant Tungsten, not Titanium.

[Yow Ling]

Ok, so I meant to type Tungsten, not Titanium, I have already covered Mallory Metal (A Titanium alloy) .

Still confusing, Mallory metal is an alloy of tungsten not Titanium

[SS90]

Still confusing, Mallory metal is an alloy of tungsten not Titanium

Wow, yes, you got me again.

Tungsten alloy.

[TZ350]

i have a aircooled 125 which has 27.5 rwh, has full circle cranks. but no 4speed box.
i also thought ti was lightweight metal?

I am interested in how you have found your dyno. Have you been able to use it very much?

We have got a drum and bearings from a scrap pile for ours now, just need to clean it up.

The drum is a bit rusty but we will skim and knurl it, so long as it runs true it should be good.

I think it has a rotational inertia of about 400Kg, will have to brush up on the math, and I already have an idea or two about calibrating it.

[Yow Ling]

I am interested in how you have found your dyno. Have you been able to use it very much?

We have got a drum and bearings from a scrap pile for ours now, just need to clean it up.

The drum is a bit rusty but we will skim and knurl it, so long as it runs true it should be good.

I think it has a rotational inertia of about 400Kg, will have to brush up on the math, and I already have an idea or two about calibrating it.

The dyno mite software has a wizard for entering the mass. you just enter the material the diameter(s) and a few dimensions of the roller and it figures it out. Its about $US500 with a data logger ignition pick ups etc http://performancetrends.com/dtm-dyno.htm bottom of the page for hardware

[TZ350]

.

Thanks for that, I will have a good look at it........

[Pumba]

Its about $US500 with a data logger ignition pick ups etc http://performancetrends.com/dtm-dyno.htm bottom of the page for hardware

Sounds like a legitimate business expense to me

Infact I was just thinking I would happily chip in, in compensation for some dyno time. Saves me potentially paying it to a shop somewhere.

[TZ350]

.

Yep........it would be good to have dyno handy...........

Can anyone tell if the DynoMite basic software can pickup engine rpm directly from the engine or is the basic software limited to calculating the rpm from drum speed and bike gearing.

I can't really see anything definitive about it...........

[Yow Ling]

Yes it does, in the hardware part there s a USB box that has 3 or 4 inputs , drum speed and ignition are the minimum but you can log egt or cht or maybe O2. if you want more you need to buy the next box up I think it has 8 inputs

[Buckets4Me]

Sounds like a legitimate business expense to me

Infact I was just thinking I would happily chip in, in compensation for some dyno time. Saves me potentially paying it to a shop somewhere.

one of the thinks said about this dyno is

CAN WE BUILD IT AS A TRAILER ????

and as I work at a trailer factory I cant see a reason why not
just need somewhere to park and a power point to plug into

.
Can anyone tell if the DynoMite basic software can pickup engine rpm directly from the engine or is the basic software limited to calculating the rpm from drum speed and bike gearing.

BB2-IPUH Inductive Pickup Cable (with clip) $30 us

[Moooools]

I haven't posted on this thread before, but the talk of dyno and physics gets me all excited.

$500 sounds pretty steep for a straightforward set of equipment.

All that is really needed is an rpm readout for the engine and one for the barrel.
Just a hall effect sensor or even a light gate on the sensor would work just fine.

Then all is needed is a program to read it and output the data. This could be easily achieved in a C# windows form application. It would need a serial input to take samples of the rpm. And the time can be gotten from a timer in the program.

Then the physics is pretty straight forward:

Inertia could be closely modeled by a hollow cylinder, but it would not be perfect. It will do for an explanation.

Inertia= mass x radius^2
Torque = (Final angular velocity-Initial angular velocity) x Inertia
Power(in watts) = Torque x angular velocity

That is all very easy stuff for a computer to do.
Then a little bit of graphics to make a graph.
And export the data on a CSV (text File) for further use on excel or another graphing program.