It is a well known secret that modern scooter or Derbi cilinderkits offer great performance for little money.But on a classic racer they just look wrong.Therefore a lot of scooterparts are hidden inside "fake classic cilinder" covers.
We dislike this solution : The double wall means your cilinder will have to transport all its heat through its water. Also a lot of these double wall cilinders leak around the exhaust ,or get out of shape when hot.
We stick to our solutions ,they are expensive - but proven.  And on top of that ,our cilinders are constantly improving. At this moment they can keep up with the best kits from the well known makes. And we are pretty sure we will develop cilinders that beat all of them in the very near future.

 EMOT/Grohmann cilinderkit.

This is our running project that we proceed together with a former racing engine tuner. 
We have casted Van Veen type and looks cilinders for two years now ,but different to the Van Veen design ,this cilinder has a bridged exhaust for longer pistonring life and 5 scavenge ports for more power.
A spinoff of the above project is a special casting that allows for a reed valve intake.  This cilinder is available in 50 and 60ccm ,and can even be used on Kreidler RS streetbike modifications.

Meanwhile around 10 bikes are equipped with the cilinder ,and 17-18+hp on the dynobench is reported repeatedly by different owners.

Due to the fact that the outside mould is not our own it is planned that we will switch to a new design during 2010.  We want to improve the cooling flow at the same time and reduce the weight. This made us choose the DRM-Jamathi type barrel to be replicated. Reliability and power output are expected to rise even more.

 
Prices on request. Available as rough casting ,machined ,or raceready nikasilled with piston ,with or without head.  Prices start at 180 euro for a rough casting ,400 euro for a machined cilnder ,to around 800 euro for a really raceready kit with head and piston.

2009 EMOT racing moved from the little village of Koekange to a more modern location in Assen.
Here you find some pictures.

picture1: shop
picture2: shop
picture3: fast movers stock
picture4: metal working
picture5: workshop
picture6: coffeecorner
picture7: worktable electronics and manufacturing
picture8: cilinder tuning
picture9: testbench
picture10: how it once looked.....

We offer a fine selection of exclusively made racing pistons.
The pistons are made at Barikit using the best CNC machines. Material of the pistons is same as Mahle M138.

Our pistons are used by a large number of racers all over the world.

We have pistons for Yamaha 125 cc twins ,both versions.
The short version is also on duty in museumpieces like the last  MZ 125 tandem.

Further we have 44 and 45mm pistons for Kreidler and Zündapp overbore specials.
For Zündapp we also have a racing variety of the stock bore 39mm piston.
For Kreidler we also have a tuning piston with stock 40mm bore size.

Latest additions are a replica of the 40mm Sachs racing piston for Brehm/Sachs and Perego/Sachs motocrossers.  

And a improved version of the first special piston we ordered. The Kreidler-Van Veen rotary 50cc racer piston.
This piston has become standard fitment in the majority of 50cc rotary inlet racers.
It is a proven part that never causes problems.
But we managed some small improvements:
The latest 2010 version is 24,5mm compression height ,instead of the old 24mm.
The new thin wall piston saves weight. it is 9 grammes (15%) lighter than the older versions.
It has received a stronger piston crown with a inner shape that promotes better heat transfer.

Even the old racebikes have a lot of electronic parts on board.
In the old days they mostly came from the famous Kröber brand.
These electronics are still obtainable in small quantities through Herbert Pitsch in Germany.

We sell other makes ,because we want to serve our customers with "in stock parts" and sometimes there are just better working and cheaper solutions available. Why not use those..?
If you want a Kröber part ,please contact us for availability.

PVL :
We sell the raceproven and value for money PVL self generating internal rotor CDI ignitions in 1 and 2 cilinder version.
The PVL has a built in ignition curve of 12 degrees. 

Ignitech:
We sell the Ignitech programmable batterypowered ignition as a modern alternative for Kröber.
It is a strong CDI ignition with options like programmable curve ,shiftlight ,speedshift ,2nd curve for a extremely competitive price.

Kinphy:
Our cooperation with a huge Chinese instrument maker shows lots of possibilities for the future.  check: www.kinphyshop.com for more info.

Bo1:
This very small battery ignition system is still a great seller. Its advantage is its simpleness. It is totally easy to understand and to adjust. No computers or strobelamps needed.

For years we have been searching for a competent partner to have rev.counters with induction feed produced at a reasonable price.
This is how we finally came across the Kinphy factory.
They were the first to say: "Yes we make that ,no problem."
And so they did.
So now EMOT can offer a induction feed analogue revcounter  with a classic timeless design and at affordable prices.

But Kinphy offers more dashboard technique ,so we decided to start a webshop for them.
EMOT is official Kinphy sales representative.
We can sell meters per one via our shop ,but for bigger quantities , special designs or developments you can also ask us.

Besides this EMOT plans to develop a range of mounts ,combination dashboards and accesoiries for the Kinphy meters.

The webshop:
www.kinphyshop.com
 
 

We have a new webshop:

www.emot-oldparts.nl
Loads of new old stock and used parts that are discovered while moving the EMOT shop and workshop to the new location in Assen.
On this site you will find pistons,cilinders ,engineparts ,ignitions ,carburettors ,frameparts ,etc.
Large amounts of Sachs parts (50s,125cc) are waiting to get photographed and placed on the net.
But also Minarelli ,Morini ,Zündapp ,Simson ,Kreidler ,etc.

It takes time ,but in future over 300 items will be listed with photo and price.
EMOT's private EBAY will be something to keep checking.

Besides  rotary inlet making and cilindertuning  (please read the topics about these below) ,we can provide a lot of other services.

-Crankshaft and conrod service.
We can press your new conrod in ,this service costs 30 euro.

-Honing unround nikasil liners into shape.
Let us hone your halfworn liner straight so you can use it once more before having to replate.
40mm bore only.  Price 30 euro.

-Nikasil plating service.
A friendly priced Nikasilservice of high quality. Welding and bigboring possible too.
Pricerange starts at 115 euro for a small bore.

-Small items powdercoating.
We can powdercoat small items in our own workshop. In black and other colours.
Pricerange starts at 5 euro per piece.

-Ultrasonic cleaning.
Our cleaning bath is big enough for every motorcycle carburator.
A normal carburator internally cleaned for 20 euro.
 


 

Great news for people who want to build their own dyno-testbench.
You can buy the needed electronic hard- and software via EMOT.

The FOS box measures torque and acceleration time of the driven mass (flywheel) and calculates the engine performance from that.
It has five line-in.
One is for the revcounter ,which is standard supply.
The other four can handle input from standardised Lambda ,EGT ,pressure ,or temperature sensors.
The box has also four line-out which can be used to thrigger waterpumps ,fans ,safety shutoff or similar devices.

FOS software is very flexible ,and can be extended with various calculation programmes for high-end engine tuning and racing use.

If you have questions about how heavy the dyno flywheel has to be ,please contact us.

We are the official Dutch importer for Heidenau racing tyres.
From the very early beginning of EMOT-racing ,Heidenau has always been with us.

In the years past the German Heidenau factory established quite a name in the field of small motorcycle tyres.
The line of racing tyres expanded from a few moped racing tyres to the still growing diversity they produce now.

Heidenau racing tyres are developed by hobby racing drivers ,and are based on road tyres with compounds derrived from the Heidenau Karting tyres.
This is a successful approach.
Heidenau tyres are the most reliable allround racing performers.
They give confidence in wet slippery conditions ,on normal pavement ,or on racing asphalt.
We are always in close contact with the factory's development department.

Please check our webshop for the latest line of HEIDENAU racing tyres for classic racing ,scooters and modern small racebikes.

We can also deliver all other Heidenau tyres like road motorcycle ,cross ,tubes ,scooter ,moped ,wintertyres ,kart.
factory site: www.reifenwerk-heidenau.de

We tune all sorts of two-stroke engines.
But our main field is tuning classic type 50cc engines for  racing ,motocross or road use.
We do porting ,reed valve conversion ,bigboring ,conversion to rotary inlet and so on...

Some of the projects in the past:
-Commercial sales of Sachs tuningcilinders for motocross use type 1,2,3 and 4.
-Simson SOBW moped racer. Winner of TT Assen 3 hour race.
-Puch maxi rotary disc valve inlet engine.
-Sachs 125ccm racing engines with 4 scavenge ports and 25 hp on the rear wheel.
-Sachs 125ccm rotary inlet engine with 30+hp on the rear wheel.
-Kreidler Van Veen cross rotary inlet conversion engine ,team Cologne.
-Sachs 72ccm rotary inlet 6 speed racing engine for USA.
-K-O bicycle engine racing version for races in Estonia.
-Solo mofaracing bike for 6 hour race.
-Chinese minibike fancooled engine high end tuning. (7,4hp on rear wheel)
-Sachs motocross tuning team Hoppe. www.youtube.com/watch?v=rlaFV98PWjg
-Morini T6 enduro tuning with reedvalve conversion.
-Morini/Gilera rotary inlet sprinter engine.
-Laura-Anker/Batavus moped engined racebike for 5 hour race ,reedvalve conversion.
-Pannonia P20 engine for classic racebike ,conversion to alloy cilinders and tuning.
-Morini/TGM rotary inlet ,watercooled,dry clutch conversion for classic race.
-Simson rotary inlet ,6 speed ,dry clutch ,watercooled conversion for classic race.
-Kreidler road use optimizing Athena or Parmakit cilinders.

Our newest project we are working on:  tuningkit for german 80cc bikes (Sachs,Kreidler,Zündapp) with exhaust and converted 90ccm reedvalve inlet cilinder.

In the 70's a real racing engine had to have a dry clutch.
Today a lot of people are looking for parts to make one on their engine.
a study of what was available before made some things clear:
-The biggest market is a clutch to fit Kreidler engines.
-But also Minarelli ,Simson ,Morini ,Maico and other make riders would want one.
-There are some Kreidler clutches on the market already ,but they are a bit weak ,superexpensive ,or spareparts are very hard to get.
-There are some Minarelli clutches on the market too ,but they use too much stock Minarelli stuff.
-Other make riders or riders with bigger engines like 80cc cannot buy anything fitting.
-Customers hate bad availability of spares.

We created our clutch bearing these points in mind.
Our clutch is big in diameter and simple in design. We use quality materials to keep the weight down.
The wear parts are interchangeable with certain MZ and Kawasaki parts ,so spares are available when in need.
The inner and outer cage are made of alloy ,the outer one of superstrong aircraft quality material.
Clutch discs are alloy too ,100mm diameter.

The clutch is available as a Kreidler kit ,that requires only mounting and a few last adjustments.
And also as a half-kit with all parts that are useful when building a dry clutch yourself on another engine brand.
Price for the Kreidler kit with straight gears and engine cover is 850 euro. (both axle types available)
Half kit is 400-500 euro ,depending on the type of parts you choose.

Our test-bike is a 90cc sprint racer with 25+hp on the rearwheel.
Driver is my teammate in the design of this clutch project : Wiebe Plantinga.

We offer a large range of parts for making rotary disc valve inlet systems in most 50cc engines and bigger engines.
The most popular choices are in our webshop.
Should you want to know more about making a rotary inlet yourself on a certain engine ,don't hesitate and ask what you want to know.

We also offer "build in service".
You send your casings over ,we make it in and send it back to you.

We offer a variety of frames for 50cc and 125cc bikes.

Our own universal early 70's style frame is a raceproven design ,built more than 30 times.
It is made of 1,5mm steel tube and has a swingarm that pivots on ball bearings.
The wheelbase is aprox. 1260mm and the steering head angle is 23,5 degree.  Together with the high rigidity of the frame ,this layout gives a well handling bike that can be braked into the corner.
The frame fits engines of : Minarelli ,Sachs ,Simson ,Morini ,Puch ,Benelli ,Zündapp ,Casal ,and many others.

Our 125cc frame is the bigger sister of our 50cc frame.
Its great for engines like Yamaha twin ,Malanca ,Sachs ,Zündapp ,Aspes ,Maico ,Rotax ,etc.

Frames are made on request.
This means you can incorporate your own wishes like engine mounts ,or such.
Price ranges from 650 euro upwards.

Of course we offer bodyparts like fueltanks ,various seats and fairings ,fork yokes ,footrests ,shocks ,etc, to complete your bike.
EMOT 50cc tank: 195 euro
Jamathi model fairing: 140 euro (foto)
Shark model fairing: 150 euro (foto)
Contact us for other parts prices........
And if we don't have what you need ,we might know where to get it ...(4ls brakedrums ,alloy rims ,etc..)

For Kreidler we can offer the known shapes Van Veen model 1971 and 1978.
And also the bodyparts like tank ,seat ,fairing.

In development is a variation on our universal 50cc frame that has more modern looks of around 1978 -1980.
It fits most engines like Minarelli ,Simson ,Casal ,Derbi ,etc.
Rear suspension can be both cantilever monoshock or classic twin shock.
Another development project is a variation  of our frame for Kreidler engines.

This is not our core business ,but I have a lot of racefriends who own Yamaha racebikes.
So when there is a problem with the availability of parts I help wherever I can.

This is why we had the pistons for both 125 twins types remanufactured at Barikit. (exclusively made)
And this is why we offer conrods for the 125 twins ,the 250/350 TD3/TR3/TZ and even for the TD2 we have a solution.
The PVL twin cilinder ignition is very wanted as a cheap and reliable replacement for old OEM Yamaha parts.
And the Heidenau tyres 4.10-18 ,110/80-18 and 90/90-18 are a popular choice for the 250and 350 of early '70s.

Still the most stressed part of a tuned twostroke engine : the conrod and its bearings.

We have a lot of experience with various makes ,types and sizes of conrods.

At the moment we have found a great partner in the spanish Samarin company.  They are a small factory with very high quality standards.
And they are able to produce "specials" for us too.  Samarin uses only the best materials (bearings ,etc) for their rods ,and their machinery is all state of the art CNC type.

Besides the conrods you find in our webshop we stock a lot of other types ,and are able to tell you as customer if a certain size is available or not.  So if you need a certain size of conrod for a project or restauration ,please contact us first... We tell you if it exists.

The much wanted Kreidler racing conrod with 12mm pistonpin bearing and machined silver cage is available at EMOT.  Samarin makes them to our specifications.

Crankshaft service is also possible. You send your crankshaft to us ,we repair it and send it back.
We also sell parts like bearings,pins,washers ,etc