ESE's works engine tuner

**TZ350** · 30th September 2013, 18:42

Originally Posted by Drew

Should the gasket surfaces be clamped straight in the vice?

Click image for larger version.

Name: vise_bench_4.5_in.jpg
Views: 53
Size: 55.0 KB
ID: 288081

The vice is fitted with Soft Jaws, like this one and I expect it was not cranked up all that tight either, just enough to hold the job without marking it.

**F5 Dave** · 30th September 2013, 18:57

Bit of space in those 350 barrels I guess. Now try a 40mm 50 barrel and still see what yer doin

. Nice idea I admit.

**Flettner** · 30th September 2013, 19:03

I ascertain my port timing by fairy dust and magic powder. This tool is just the wand that applies that magic

Special soft, "soft jaws"
Yes I admit there is a truck load of room in the 350 barrel. A smaller version of this could be made with the smaller high speed die grinders.

**Grumph** · 30th September 2013, 19:40

Originally Posted by Flettner

I ascertain my port timing by fairy dust and magic powder. This tool is just the wand that applies that magic

Special soft, "soft jaws"
Yes I admit there is a truck load of room in the 350 barrel. A smaller version of this could be made with the smaller high speed die grinders.

Yes, not hard to miniaturise. Also not hard to put stops on the handle so as to cut to a defined limit.
Where did you dig that barrel up from. It lends a whole new meaning to the term "green casting"

**wobbly** · 1st October 2013, 10:02

Seems perfectly reasonable Neil - to spend 500,000 on CNC gear then 50 on porting gear.
But I think the fairy dust has gone up your nose - not into the cylinder.

**Flettner** · 1st October 2013, 10:54

No NO, not the fairy dust, that's what magic powder is for!
To be fair, I haven't used this tool for many years now. It's ultimately easier to cast a new cylinder with exactly what you want inside, no compromises.
I'll take a few photos of this new cylinder as I build it up ( the patterns ) if you like, you will see it's so easy everyone will be building their own cylinders soon!

**F5 Dave** · 1st October 2013, 12:16

oh yeah. I'll whip some up for the van for the heck of it. Might give it some decent overtaking ompph.

**Forgi** · 1st October 2013, 22:12

Originally Posted by TZ350

Hi Forgi, I enjoyed the video, sounds good. I liked the photos of making the sleeve and fitting it to the cylinder because its the sort of work that I would like to do too, I hope to make my own special alloy sleeve for the Beast one day.

We are lucky to have the F4, F5 (Bucket) racing class here because it allows a whole range of different people to participate. Someone can take a stock FXR150, fit it with secondhand slicks and have a good bike while others might like to try their hand at modifying something more exotic, which is what I like to do. Our racing class rules pretty much keep everything on a level playing field and that's good.

If you have other pictures of modifying Simson engines I would love to see them posted here.

**Muciek** · 2nd October 2013, 03:37

Originally Posted by Forgi

You are not allowed there to weld the crankcases and cylinder base to get bigger transfer ports?

**husaberg** · 3rd October 2013, 13:13

Originally Posted by husaberg

*Please Note the cankseals on the DKW3

I guess no one did.......

Teflon might be as efficient nowdays of course........
But has anyone such as Jan Frits or Wob tried?

Originally Posted by Flettner

No NO, not the fairy dust, that's what magic powder is for!
To be fair, I haven't used this tool for many years now. It's ultimately easier to cast a new cylinder with exactly what you want inside, no compromises.
I'll take a few photos of this new cylinder as I build it up ( the patterns ) if you like, you will see it's so easy everyone will be building their own cylinders soon!

Yip i reckon

but its the Crankcases i am having trouble getting my head around.
I seen your stuff on TSM very neat....

**wobbly** · 3rd October 2013, 15:43

We have discussed seals on here before and Lozza put me onto the non contact type that will fit such things as RS125.
The dyno certainly tells me they use alot less power than the friction prone spring loaded lip seal type.

**husaberg** · 3rd October 2013, 17:16

Originally Posted by wobbly

Ceramic bearings do exactly as they say - I have always used Micro Blue versions so can only speak about those.
A 50 Hp 125 will make around another 1.5 to 2 Hp with a full set, they last forever and work a treat.
In wheel bearings, a bike or kart will roll easily twice as far in neutral, after a plug chop.
Riders love not having to push back to the pit, and I love plug chops.
One thing I would like to try is to Micro Blue the surface of the sleeves where the seals run.
Seal friction is probably way bigger than the balls rolling friction, so this could be useful too.

Originally Posted by husaberg

Thanks Wob
Re seals
I am pretty sure i posted the Greeves solution to the seals a while back Std Honda Parts too.(only used on Works bikes and factory supported racer mind you.)
I can't remember what they were worth in HP.... something along the lines of 1.5-2 HP out of 30 i think. Lasted forever as well though.
This was pre admittedly Teflon days though.
Teflon ones from 2tinsitutes site he found include[/SIZE][/B]

HS_30 Seal crank clutch side R/H Honda 125 Carbon Teflon
Honda CR 125 right hand crank seal Carbon / Teflon 30x45x7mm low drag best seals available $10.00
HS_22 Seal crank clutch side R/H Honda CR80 / 85 Carbon Teflon
Honda cr 80/85 right hand crank seal Carbon / Teflon 22x40x7 mm low drag best seals available $10.00
HS-20 Seal Crank Ignition side L/H CR 125 & 80/85 Carbon Teflon
Seal Crank Ignition side L/H CR 125 & 80/85 Carbon Teflon 20x32x7mm best seals low drag available not legal in spec stock moto $10.00
HS-17 Seal output shaft CR 80 & 85 Honda Teflon Carbon
Honda CR 80 / 85 counter shaft seal 17x28x6mm Teflon carbon best seal available low drag $10.00
HS-26 Seal output shaft 99 CR 125 Honda Teflon Carbon
Honda CR 125 counter shaft seal 90 to 06 motors 26x37x6mm Teflon carbon best seal available low drag not spec stock legal $12.00
You can't argue with the price i guess.Cheaper than std Honda
RS125 oil seal and crankcase seals sizes attached below [/SIZE][/B]
forgive any errors it bloody late Wob.
Source they have all sorts of parts manuals and service manuals etc.
http://www.rscycles.com/pdf_partsbooks.htm
I do not part centre code 166 is CR80 the air cooled of around 1980 which shares parts with the MB5 and MB100 series.

Originally Posted by wobbly

Are the teflon seals for the RS125 kit, available in a range of sizes ie where do they come from..

Originally Posted by 2T Institute

Hey Wob, looks like finaly found that one thing you haven't heard about.
http://sharkshifter.com/zc/index.php...roducts_id=810
Most seal manufacturers can make them, seal friction is very high these make a massive difference

Originally Posted by wobbly

We have discussed seals on here before and Lozza put me onto the non contact type that will fit such things as RS125.
The dyno certainly tells me they use alot less power than the friction prone spring loaded lip seal type.

Mmm they are not available in too many sizes though.

Originally Posted by husaberg

Yamaha OW54
I remember TZ showing a pic of a Cagiva's inline disk many 100's of pages ago.

and someone saying the Yam was a similar set up i guess this was it.
Only on a twin crank vee set up.

Kind of Konig like only bent and contra rotating twin cranks

Found these extra pics it was a little more ugly in the inlets than i imagined.

**marsheng** · 6th October 2013, 09:31

250 single. I made a toroidal combustion chamber for the head. How far should the plug electrode be from the piston. Just missing it or 1/2 way between the piston and top of head chamber or other. ?

New Framewww.marshland.co.nz/ftp/MaicoBimota/Build/FramePainted.JPG

**TZ350** · 6th October 2013, 09:58

Originally Posted by marsheng

250 single. I made a toroidal combustion chamber for the head. How far should the plug electrode be from the piston. Just missing it or 1/2 way between the piston and top of head chamber or other. ? New Framewww.marshland.co.nz/ftp/MaicoBimota/Build/FramePainted.JPG

Hi Marsheng, I like the frame. Plug electrode gap, 6mm I think but that may only be for a 125 with a toroidal combustion chamber, you may find the answer for a 250 in the links below. If you click on the link you will find there are a few relevant posts quoted.

Originally Posted by TZ350

Here you go .....

And if you left click on a posters name then click "View Forum Posts" you can search back and find all the interesting stuff they have posted.

Originally Posted by RomeuPT

Ok TZ350, I kind a remember those post's, but those 6 mm are for a toroid. I wonder if the hemi is the same, thinking if the toroid brings to the flat piston the same height of the a 2mm dome piston. Thanks for your research...

**2T Institute** · 6th October 2013, 13:45

Jan Thiel was due to work for Cagiva when that inline was around, despite being highly compromised Jan said that when they tested it at Mugello it was a rocket. I think Jan said Garelli came up with a offer or something, what might have been eh.

Thread: ESE's works engine tuner

Thread Tools

Thread Information

Users Browsing this Thread

Bookmarks

Bookmarks

Posting Permissions