E-T tools

The right tool for the job: The frame jig

I made this tool some fifteen years ago and it has proven to be invaluable whether
building a frame from scratch or altering an excisting frame.
More than fifteen frames, most for 50cc race- use, has been lined up herein. The frame jig.

Fantic frame prepared for Honda engine.

Supercharged 4stroke in tubeframe.

One of the first was converting this Fantic TX96 frame to accept a Honda CD50 engine.
The challenge here was to get a proper line for the drivechain and have room for the
supercharger as well.
The dimension of the motocross frame, 20x2mm tubing, made for a heavy but sturdy chassis.

First attempt of making a Van Veen replica frame.

1980 Van Veen replica with 6speed engine.

First frame build from scratch was this Van Veen replica.
Sold of to Germany when completed.

Van Veen type frame prepared for Honda engine.

Honda 2

Did a second Van Veen type chassis destined for 4stroke power.
Project was abandoned and sold of to a Kreidler enthusiast.

The second Kreidler frame.

Race- winning design this one.

I really took a liking to this type of chassis designed by dutchman Dick DeJager!
The ingenious DeJager Kreidler frame with monoshock rear suspension is one well- handling
design. Took the liberty to incorporate the gastank into the main frame tube as the short
nature of our races - around 15minutes of track time - demanded less than 2litres of fuel.
My calculation for the capacity were just on the money - no more than 1.85litres of
racegas could be crammed into this tube. Not easy filling this as the filler neck was
placed one third down the top of the tube, so I had to raise the rear of the bike to get
the air out!

The second DeJager Kreidler frame.

Mopedspeed DeJager

Two of these DeJager Kreidlers were made - second one I made for a friend - has
never been raced though.

Difficult layout - raceframe for the 6speed Puch engine.

Puch Cobra chassis.

The six-speed Puch engine demanded a different layout, as the half-lying cylinder,
made it difficult to design a frame with nice flowing lines. A kink in the front down-tubes
seemed to do the trick and supports the quite heavy engine nicely. Good overall result!

Converted for Kreidler- power.

In 2012 the Honda got converted to Kreidler power - raised the downtubes to aquire
better streamlining with a lower ride height.

Recreating a legend.

Re- creating this legend couldnt be done without a proper jig setup!
Juggling the heavy prototype 6speed factory Puch engine around when establishing a complex
line of chain required special tools. Legendary Dan Jeppesen and the Puch special.

DeJager type chassis for the Cobra engine.

DeJager Puch.

To adapt the Cobra engine into a DeJager type chassis was another challenge.

Everton chassis converted for track use.

Everton

My first chassis for the venerable Minarelli P6 engine.
This sixties style danish- made mopedframe was initially outfitted with 3 and 4speed
Minarellis. A rather tall frame that demanded some modifications to get the aerodynamics
correct. Had to raise engine as well as swingarm pivot point to re-establish line of chain
- also the headstock had to be lowered considerably.

Minarelli engine in Gilera touring chassis.

Gilera-Minarelli

Another Minarelli powered racer - this time in a modified Gilera Touring frame.
Resides in Sweden.

Sachs engine in DeJager type chassis.

My current racebike - Sachs engine in the proven DeJager type chassis!
Also a race winner.

Emot frame kit.

Simson racebike.

My biggest regret - not having the chance to try out this dutch- made chassis
before selling it of! Looked forward to finally test the Emot chassis after being run
over by many of these on the tracks:o) Designed by Martijn Stehouwer, produced in high
numbers and resembling a Simson raceframe - if I remember correctly.
This sturdy race-chassis were outfitted with a much-modified Simson S51 engine and was
destined to be my spare racebike - bummer!

Raceframes for Puch engines are in high demand.

Puch raceframes are in high demand! Frame for the 3L Ferrari engine.

Good thing I made the jig a little oversized - and rigid enough to support a 3L
Ferrari V8 engine while designing a custombike frame for it.

Adding engine mounts to the California made frame.

The right tool for the job: The engine dyno.

A dyno is an essential tool when optimizing engines. I built this unit for testing
50cc race engines mainly, but also to evolve supercharging on small fourstrokes. That
meant that the construction should allow for mounting many different engine layouts each
with its unique mounting hardware. My initial plan was to use a PTO coupler axially to
the outgoing axle, but that meant that engines with PTO exiting on right side,
should mount pointing in the opposite direction. Space limitations within my garage did
not allow this option, so a lesser favorable option was chosen - a short chain.
Mostly spanish components were chosen for the actual brake,controllers and software.
A high inertia Klam Eddy Current retarder controlled by hardware and software from
Sportdevices.

Sachs

Kreidler

Engine mounting hardware for most 50cc race engines, Kreidlers, P6 Minarellis,
Puch Cobras, Sachs, Simson has been made, as well as CB and CD type fourstrokes.

The right tool for the job: The frame jig I made this tool some fifteen years ago and it has proven to be invaluable whether building a frame from scratch or altering an excisting frame. More than fifteen frames, most for 50cc race- use, has been lined up herein.

One of the first was converting this Fantic TX96 frame to accept a Honda CD50 engine. The challenge here was to get a proper line for the drivechain and have room for the supercharger as well. The dimension of the motocross frame, 20x2mm tubing, made for a heavy but sturdy chassis.

First frame build from scratch was this Van Veen replica. Sold of to Germany when completed.

Did a second Van Veen type chassis destined for 4stroke power. Project was abandoned and sold of to a Kreidler enthusiast.

I really took a liking to this type of chassis designed by dutchman Dick DeJager! The ingenious DeJager Kreidler frame with monoshock rear suspension is one well- handling design. Took the liberty to incorporate the gastank into the main frame tube as the short nature of our races - around 15minutes of track time - demanded less than 2litres of fuel. My calculation for the capacity were just on the money - no more than 1.85litres of racegas could be crammed into this tube. Not easy filling this as the filler neck was placed one third down the top of the tube, so I had to raise the rear of the bike to get the air out!

Two of these DeJager Kreidlers were made - second one I made for a friend - has never been raced though.

The six-speed Puch engine demanded a different layout, as the half-lying cylinder, made it difficult to design a frame with nice flowing lines. A kink in the front down-tubes seemed to do the trick and supports the quite heavy engine nicely.

In 2012 the Honda got converted to Kreidler power - raised the downtubes to aquire better streamlining with a lower ride height.

Re- creating this legend couldnt be done without a proper jig setup! Juggling the heavy prototype 6speed factory Puch engine around when establishing a complex line of chain required special tools.

To adapt the Cobra engine into a DeJager type chassis was another challenge.

My first chassis for the venerable Minarelli P6 engine. This sixties style danish- made mopedframe was initially outfitted with 3 and 4speed Minarellis. A rather tall frame that demanded some modifications to get the aerodynamics correct. Had to raise engine as well as swingarm pivot point to re-establish line of chain - also the headstock had to be lowered considerably.

Another Minarelli powered racer - this time in a modified Gilera Touring frame. Resides in Sweden.

My current racebike - Sachs engine in the proven DeJager type chassis! Also a race winner.

My biggest regret - not having the chance to try out this dutch- made chassis before selling it of! Looked forward to finally test the Emot chassis after being run over by many of these on the tracks:o) Designed by Martijn Stehouwer, produced in high numbers and resembling a Simson raceframe - if I remember correctly. This sturdy race-chassis were outfitted with a much-modified Simson S51 engine and was destined to be my spare racebike - bummer!

Puch raceframes are in high demand!
	Good thing I made the jig a little oversized - and rigid enough to support a 3L Ferrari V8 engine while designing a custombike frame for it.








The right tool for the job: The engine dyno.
A dyno is an essential tool when optimizing engines. I built this unit for testing 50cc race engines mainly, but also to evolve supercharging on small fourstrokes. That meant that the construction should allow for mounting many different engine layouts each with its unique mounting hardware. My initial plan was to use a PTO coupler axially to the outgoing axle, but that meant that engines with PTO exiting on right side, should mount pointing in the opposite direction. Space limitations within my garage did not allow this option, so a lesser favorable option was chosen - a short chain. Mostly spanish components were chosen for the actual brake,controllers and software. A high inertia Klam Eddy Current retarder controlled by hardware and software from Sportdevices.


Engine mounting hardware for most 50cc race engines, Kreidlers, P6 Minarellis, Puch Cobras, Sachs, Simson has been made, as well as CB and CD type fourstrokes.