ESE's works engine tuner

[jasonu]

Is there any patent information allready available? (Ryger offcourse )
If not, I may have found something.

Post what you have. Doesn't matter if someone has already posted it.

[bjorn.clauw.1]

http://worldwide.espacenet.com/publi...C&locale=en_EP

inventor is also person who requested the ryger trademark.

http://trademark.markify.com/tradema...yger/014093306

[Lightbulb]

That was posted here before sometime in October I think.
Supposedly there is a newer patent, but I have not found it yet.
It may well be that the technology can't be patented or else it is something
that they do not want to patent but protect from another means.
Neil

[TZ350]

Sorry Henk, didn't catch the first "three way". However, got the second bit of "passing on the German autobahn" later on.

Great racing, hot action, it's what Bucket racing is all about, and the race was led by a bike running a tuned Suzuki TF125 farm bike engine, in fact there were two front running 2T's with home tuned TF125 engines. Go the 2T's.

[AndreasL]

A "70cc RSA by Jan Thiel"!

https://www.facebook.com/photo.php?f...9594953&type=3

[TZ350]

here's some footage of the second session

And some more Bucket Racing from Team GPR.

To cheer you up, here comes the first A-Grade race. https://youtu.be/vTIuLYigUfg

Here we go folks, another video. I thought I was uploading the third B-Grade race, but it looks more like a game of pinball... https://youtu.be/Fdk7YUwSfK4

And photos.

The 2 hour! Album here: https://www.flickr.com/photos/sonscc...57659118320303

[kel]

Caution, bucket racing can be hazardous to your health
Hopefully Brian was OK

[TZ350]

Photos are up from round 1. Click here for the full album

Round 1 of the 2015 North Island Series. Mr Bucketracer from Team GPR leads the pack.

[mr bucketracer]

i don't know if i want to race again after seeing this picture

[Tim Ey]

Hey there everyone.
I have a Problem. I have calculated some exhausts for a friend with a 50ccm engine.
Aircooled, 30mm Carb, 196° Exhausttiming, 128° Transfers

I have calculated the exhaust using blairs lenght formula and my gut feelings for the exhaustgas temperature.
After several exhausts and times of dynoing the engine, the former endresult is this


Not bad for a 50cc engine. The Problem is: This exhaust has a tuned length of 578,5mm which equals a Exhaustgas Temperature of 430°C. (edit 400°C)
Insane low...
Can anyone tell me where my mistake is? Is this normal for 50cc engines?

cheers
Tim

[JanBros]

I have calculated the exhaust using blairs lenght formula
Can anyone tell me where my mistake is? Is this normal for 50cc engines?

can't realy help you, but I have a feeling Frits will answer that the answer to your question lies in the other sentence I quoted

[sonic_v]

Hey there everyone.
I have a Problem. I have calculated some exhausts for a friend with a 50ccm engine.
Aircooled, 30mm Carb, 196° Exhausttiming, 128° Transfers

I have calculated the exhaust using blairs lenght formula and my gut feelings for the exhaustgas temperature.
After several exhausts and times of dynoing the engine, the former endresult is this


Not bad for a 50cc engine. The Problem is: This exhaust has a tuned length of 578,5mm which equals a Exhaustgas Temperature of 430°C.
Insane low...
Can anyone tell me where my mistake is? Is this normal for 50cc engines?

cheers
Tim

That is very short for an engine peaking at 14,600 rpm. 660 mm would be closer to the mark. What sort of ignition timing are you running?

[peewee]

has anyone tried this process for transmission gears and shafts ? http://www.cryoheat.com/motorsports/

[wobbly]

Cant help with the pipe question because of insufficient collateral info, apart to say its miles too short.
What is the ignition curve.
What is the egt in the header.
Does the Blowdown STA match with the Transfer STA for peak power at 14660.
The pipe is well out of sync with the port, as is shown by the huge torque hole at 12,000, so something is seriously wrong.
Post a pic of the pipe design, as who knows what the the length % are after the usual cut and try on the dyno scenario, where the tuned length
that you found to "work " was only "right " as it was fighting elements of the design that were not remotely right for the peak rpm.

Edit - and 18 Hp at 14660 is only 11Bar BMEP so its hardly "good " for an engine reving that high - again pointing to something being very wrong.

Re Cryo treatment
Works very well for Jap gearboxes where for production purposes they do the absolute minimum heat treat required for the hardness needed.
As it helps to complete the martensite conversion process.
Also helped the old Rotax 256 twin that liked to spit out the small diameter 3rd gearwheel that was way over-stressed for the application.
And done it for years in aircooled KT100 racing, where it helps to stabilize the bore shape when they get very hot - especially when we used clutch pipes and
were up against that engines thermal limit the whole time.
But in my opinion micropolishing and the microblue process would achieve more if you are confident in the gear strength and heat treatment.

[TZ350]

Morgan Engineering and Sheetmetals :- http://www.morganeng.co.nz/ here in Penrose Auckland is setting up to do Micro Polishing and there is another process too, maybe its MicroBlue.