E-T tools
The right tool for the job: The frame jigI 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. |
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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. |
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First frame build from scratch was this Van Veen replica. Sold of to Germany when completed. |
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Did a second Van Veen type chassis destined for 4stroke power. Project was abandoned and sold of to a Kreidler enthusiast. |
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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! |
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Two of these DeJager Kreidlers were made - second one I made for a friend - has never been raced though. |
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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. |
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In 2012 the Honda got converted to Kreidler power - raised the downtubes to aquire better streamlining with a lower ride height. |
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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. |
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To adapt the Cobra engine into a DeJager type chassis was another challenge. |
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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. |
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Another Minarelli powered racer - this time in a modified Gilera Touring frame. Resides in Sweden. |
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My current racebike - Sachs engine in the proven DeJager type chassis! Also a race winner. |
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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! |
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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. |
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