ESE's works engine tuner

[Lightbulb]

Neil, I did some more digging and found experimental pipe #3. Forget about #2.
Attachment 317393

Thanks Frits, What do you suggest to go from the 11.5mm exhaust stack to the 9mm header diameter ?

I was thinking of some sort of high temp epoxy, but if particles come loose, it will ruin a good engine.
Neil

[Jvenni]

First off all..thanks for this super thread, at page 700 now.. trying getting 70 hp out of our 125 cc

There are two rumours about the ryger around here:
It has reliability issues, seizing when revs cq power went up
They never put the thing on a test bench, the 70 hp is just an best calculated guess.

But rumours..( and all local karters are kicked off the ryger facebook site..probably talking too much :laugh )

[F5 Dave]

Welcome to the site. Yes there will always be detractors and I would be surprised if there weren't some issues early on to feed those detractors. A new tech needs development.

[peewee]

hey wob do you normally use locating pins on these heads ? was thinking to drill through at the red mark and use some ktm pins then i could machine the combustion chamber exactly to the bore

[jonny quest]

Use a few dowels around studs. You already have a reference hole

[tjbw]

First off all..thanks for this super thread, at page 700 now.. trying getting 70 hp out of our 125 cc

There are two rumours about the ryger around here:
It has reliability issues, seizing when revs cq power went up

...

Anyone developing an engine would want to find ways to improve performance. Sometimes they push beyond the limits, and learn from the failures.

[Frits Overmars]

Thanks Frits, What do you suggest to go from the 11.5mm exhaust stack to the 9mm header diameter ?
I was thinking of some sort of high temp epoxy, but if particles come loose, it will ruin a good engine.

I would not use any filler there. I'd rather slide the pipe into the exhaust duct.

[Lightbulb]

Thanks Frits, I'll give it a go and make one and see what happens.
Neil

[JanBros]

looking for a christmas gift ?

http://www.ebay.co.uk/itm/2T-TWO-STR...431&rmvSB=true

[seattle smitty]

Yeah, but is it a castor-oiled 2-stroke candle?

[TZ350]

.

2015 Mt Wellington 2 Hour.



first place went team to Team GPR



Once again the 4T boys get to give us 2T guys the learn ....



Fish and Andrew took second place. They each did it the hard man way by riding at race pace each for a whole hour non stop. The difference between 1st and 2nd place was just 10 seconds.



The only 2T to finish took third place. This was an amazing result after being knocked of in the horseshoe and having to push the bike back to the pits for repairs and re inspection before they could re join the race. They had lost four laps as a result of the off.

Attachment 317446

2 hour results ......

[TZ350]

The 2T's ran hard and fast at the front for most of the race.

Some of the hard luck stories.



TF125 engine with a TS gearbox and pumper Tillotson carb. This team were serious contenders.

After some brilliant riding by both riders and with only 10min to go the bike high sided exiting the sweeper dumping its rider at the fastest part of circuit.



Air cooled Kawasaki, possibly the fastest bike out there, lost its charging system and the battery expired with 5 minutes to go.




Another front running 2T until it dropped its pipe with about 15 minutes to go.



Seriously hard luck for 88. Nathaniel was fast from the get go on his 2T and within 35 minutes had lapped pretty much the whole field before bringing the bike in. Later, Jacob the other team rider went out on the backup bike and was cleaning up in fairly authoritative style. These guys would definitely have taken the win but for the fickle finger of fate.

[TZ350]

.

Some of the interesting bikes at the 2 Hour.



An old school classic Honda 4T twin.



Scott and the Team GPR 2T. This has to be one of the very best examples of a Bucket racing special.



Mike and Dave with Speedpros Team Shanny special.



Young Stroud is 13 and took fourth place in the forty lapper, just plane natural talent.

[TZ350]

Two Hour - D

[Lightbulb]

A great report, thanks for the posting and the pictures, wish them all better for next year.
Neil