Aerox build up

may be stupid question but whats "hot tanking" and why did you do it
should be intresting to see what you use for a reedblock and im also looking forward to seeing what your reshaping does as atm im slightly skeptical...dont the bearings and crank need the oil in the oil petrol mix for lubrication which you have now directed away from it and also would this not change the timeing of things as i would of thought now the petrol will get to the head alot quicker or as long as the crank is still spinning at the same time will it not make a difference? and if it doesnt change this then what will the gains be?

 

Ok hot tanking is a process that removes all oil and dirt from the parts

Watch for the updates and you will see what I am doing for a reed block
But its a custom manifold

The oil for the bearings goes through the bearings before it goes up the hole
So it really doesn't matter where they are , except that if you lay them flat the scooter will tend to smoke for a few secs on start up
Having them vertical like mineralli do is an emission thing and infact goes against the flow and thus are worse for crank wear than changing them like i have

Changing the timing ??
Im not sure how to answer you there with out sounding condescending

The gains are that the air has a more direct path to the transfers and it helps reduces windage from the crankshaft disrupting the flow

 

yes

Yes

YES!



this is getting good wax!
wanted to do the same work on my engine, but tbh was alot of work i wasnt ready to do

 

Ok well this is the idea for the flow
I was just putting it together after spaces had been made as a dummy assemble to see where I needed to grind

As you can see here I am starting to shape the diverter on the shallow case

Ok more devcon going in to help the deep case diverter shape

One 28mm kehin d slide carb for the engine


Tomorrow the case will be close to finished and then its just the smoothing out and sandblasting , cleaning
Dummy assemble next week for the measure up and also the finial assemble

 

Sicck. you sure it clears the crank aswell?
You said you filled in the hole for the bearing lube, where is that now ?

 

Yeah it will clear the crank
If you look up into the trasnfer port area you can see where i have redrilled them to allow the bearings to breath the way they want

 

all my previous questions have been answered :good: some nice work there get it built back up and test it out let us no how much gains you get from this

 

Thanks
Still alot of work to do on the cases yet, at the moment they are still very rough
When its all finished it will look alot better

 

Here is the intake shaping pretty much finished

Im using a 4.5 degree angled reed spacer to aim the reed down the port as best as i can

Just have to work on the surface finish now and a bit more blending

Hours go into getting this stuff right to make sure the flow is as best as you can get





He is a picture of some stock Honda rs125 cases

Arguably the most powerful 125 two stroke engine out there

you can see the similarities between this case and my redesigned scooter case

 

Ok short block is together

Sorry but you dont get to see the cases in there final state I have to keep some secrets

But think about flow diverters and you will have a clue

Tomorrow I will set the squish clearance and complete the long block

 

looking good

 

your a pool of knowledge :lol:

and my question is why am i seeing alot of square exhaust ports now cratch: what do they benefit??

 

Thank you and the exhaust ports scavenge better than a round one so they say
Im not actually sure on that its just what they claim

 

Today finished setting the squish clearance, ended up having to run a different spacer as it was enough before but this one works well
Lucky i have a good supply of alloy to make these out of.
Blended in the exhaust port to the yasuni pipe so good to go there.
Tomorrow I will make a plate for the intake so i can pressure test the engine

 

is ur engine clamped in a vice?

 

yes

 

was gna say looks like its floating does that not damage cases and looks good you gona get it on the dyno?

 

No its fine
Its being held in a non critical area
Yes i hope to dyno it , hard to get a dyno small enough over here in australia

 

i look forward 2 seeing it