One of Dave Briggs Gilera runner twin engine conversions, as well as the exhausts we also designed and fabricated a pair of reed block housings and manifolds for the oversize reed valves

 

                                   Lambretta Auto conversion Exhaust Systems

                             Examples of our TDR Auto Conversion Systems where the criteria is to design a system that

                              works for the commonly used Malossi 172cc Cylinders but needs to look like the traditional

                              Lambretta exhaust. Cone dimensions and spec is similar to our TDR "Tyga" system

                             so it is a true performance system!

        .

Another one -off exhaust construction, this time a Vespa Small Frame with a twist. . . it`s running a reversed cylinder from a Rotax Aprilia powervalve 125. One of the most challenging builds to date due to the dimension of the exhaust necessary for it to perform but the very limited space available.

  

                                               

  Again something different. A modern twist on the classic Suzuki GT380 using modern running gear such as rising rate rear suspension

   and upside down front forks, this as always means the original (and any aftermarket ) exhaust systems wont fit the modified chassis.

   We had to construct a set of expansions that not only improved on the performance of the original system but fitted precisely and looked

    good. The silencers were supplied by the customer and we would have prefered our own choice of Tyga end cans these being slimmer 

     and lighter than the Aprilia units supplied.

 

   

 

 

 

The development of an expansion chamber for a Dac-Tek Lambretta, once the parameters have been set and specifications of the 

engine accertained, the cones are printed out onto card to allow a mock up of the exhaust as it develops.This is done stage by stage

and cone by cone to ensure the system fits without fouling bodywork or other parts.Each pattern is cut out of the steel and hand 

rolled then tack welded.The exhaust progresses until the final design takes shape, this is test fitted before being fully TIG welded

and pressure tested. The ancilleries such as mounts etc are then fitted with the system on the scooter to ensure a perfect fit.

This is a very long drawn out and labour intensive process, not to mention expensive! but ensures  a system with no issues. 

 

As well as the above we can also offer  MIG TIG and aluminium welding and have contacts that can offer milling and machining work, we can supply Pro-x pistons and have barrels re-lined and re-ported to customer specs 

One of the most powerful systems available.

      

Priced at £310 inc vat and courier delivery to the UK mainland .

These systems are for "race use only" they are not "e" approved and have no warranty given or implied.

All parts are bare metal  clear lacquer finish.

 Your carburettor may need up jetting, suggested roller weights 13.5g (not supplied).

The new TDR "Tyga" version now available in 2011, same price but now featuring the spun alloy "Tyga" silencer with revised mounting, quieter operation and a sleeker look.