Schumacher MI4CX/CXL

149 posts in this topic


Unknown to most was the fact that some of the team were running a later version of the Mi4, the new Mi4CX. Full details on the replacement for the Mi4LP are due out shortly but we expect the car to be out around November time.


Share this post

Link to post
Share on other sites

Schumacher MI4CX Due early November Price to be confirmed. Much more info below.

After perusing Chris Craingers Mi4CX touring car at Newbury indoor track(UK), below are the facts and some additional changes that Chris actually runs with.

* Black lightened T6 Aluminium Bulkheads front and rear.

* Extra stand on front and rear bulkheads screwed to chassis to compensate for lightened bulkheads.

* New drive shafts with wider pins and no blades. Proven to last an exceptional period of time before replacement.

* New rear diff outputs. Also in black.

* New Chassis to allow newer bulkheads.

Other facts.

* No dual crank steering system.

* No changes to the anti-roll bar mounting positions.

* No big bore shocks.

Changes that Chris solely runs with but not on production Mi4CX

* Counter sunk screws where possible including on hinge pin holders, shock mounts, etc

* No countersunk screws on top deck but rather just button head hex screws to allow for movement(no countersunk washers used, as supplied in kit anywhere!)

* Much thicker shock mounts/towers front and rear(5mm approx).

Only other thing to add is that the car looked very consistent around the twisting indoor track.

Share this post

Link to post
Share on other sites


The NEW Schumacher Mi4CX is the ultimate high performance electric touring car.

It is developed from Chris Grainger’s 2010 British championship winning Schumacher Mi4LP and incorporates the latest innovations from Schumacher’s multiple championship winning engineering team.

The Mi4CX is fast! With an efficient transmission and ultra precise CNC machined components, it handles like a dream. The superb suspension and pro shocks enable the Mi4CX to carry fantastic speed through the corners, helping you to reduce your lap times. The Mi4CX is a pleasure to work on with a range of easy adjustments and option parts. If you are serious about winning, it’s time to get serious with the Schumacher Mi4CX.


* New - Ultra lightweight front spool with plastic 'sliders'. Improved durability.

* New - Dedicated front & rear, reverse cup, high tensile steel, CVD driveshafts. Improves all round traction. Incorporating larger pins and joints, improves strength and durability.

* New - Differential and spool plastic inserts “sliders”. Offer a lightweight, efficient driveshaft interface.

* New - Ultra lightweight Black 7075-T6 transmission housings.

* New - Ultra lightweight eccentrics and differential posts.

* Clamp motor mount to adjust side to side weight distribution. The car can be perfectly balanced with lipo batteries.

* Split rear transmission housing with options to adjust the chassis stiffness.

* Quick release layshaft design for ease of maintenance.

* Carbon fibre upper link design with options to adjust roll centres.

* Centre point steering with forward facing balls to fine tune geometry. Fully adjustable Velocity Ratio, Ackermann Angle and Ackerman Rate.

* Anti roll bar mounts with precise vernier adjustment to minimise play.

* Wide offset O ring retained wheel hexes.

* Lightweight moulded pivot blocks. Optional twin pivot block system allows infinite adjustment of roll centres, toe-in, anti-squat, and track width on front and rear.

* Fully adjustable, suspension geometry, wheelbase, caster, camber, roll centre, track width, ackerman, droop, anti dive, anti squat, front toe in/out, ride height and much more.

* 2mm Aerospace carbon fibre chassis and long top deck with optimised flex.

* Efficient transmission with twin Kevlar belts and precision CNC pulleys.

* Alloy eccentric adjusters for optimum belt tension. Easy diff height adjustment to allow changes in drive shaft plunge. This can be used to increase or decrease traction.

* Quick release diffs – Just 2 screws!!

* Super easy to work on design.

* Symmetrical chassis layout with few screws minimises tweak.

* Ultra smooth Nickel-Teflon plated threaded alloy shock absorbers for extreme smoothness and durability.

* Stiff 3mm shock towers with optimised shock positions.

* Lightweight machined diff pulley, Ceramic diff balls, aerospace thrust bearing.

* Narrow efficient thin back belts.

* Ultra Low Anti roll bars.

* Lightweight foam bumper.

* High tensile spring steel pins.

* Purple alloy M3 nuts.

* Battery fixing with tape or optional battery strap.

* Medium Flex wishbones for increased traction and better impact absorption.

* Speed secret parts available to fine tune to all track conditions.









Share this post

Link to post
Share on other sites

quelqu'un a-t-il testé ces nouvelles sorties de diff et de spool, c'est quoi, bague alu sur plastique et la sortie en elle même, celle fixée sur le spool ou le diff est en quoi?

Share this post

Link to post
Share on other sites

les nouvelles sorties sont beaucoup plus fiable que les anciennes version!

les blades et les sorties de diff (et spool) étaient le gros point faible de la MI4, maintenant, tu ne casse plus de blades, ni de sorties

Share this post

Link to post
Share on other sites

Ah oui, merci de ta réponse car je n'aurais pas cru,

un copain a d'origine je crois les sorties de spool acier sur sa MI4 LP, les sorties impec ne bougent pas par contre il bouffe du blade, tous les 4 packs!

Je ne comprends pas un truc sur la photo du spool, voir le photos en haut,

sur la sortie droite du spool, la fente est plus large que sur la partie plastique qui va venir s'insérer autour, avant la bague alu, mais rien ne semble bloquer la partie plastique en rotation, donc elle va venir bouffer la sortie de spool?

Share this post

Link to post
Share on other sites

ça me parait léger aussi

Share this post

Link to post
Share on other sites

ouais et pas d’huile non plus dans les amortos

Share this post

Link to post
Share on other sites

je viens de me rendre compte que sur la X ils ont repris le système de fixation d'axes en alu!!bien fait de garder les miens,par contre je comprends toujours pas l'utilité des bigbore sur le touring,quelqu'un aurais une réponse technique

Share this post

Link to post
Share on other sites

Perso, j'utilise toujours les supports alu depuis bien longtemps!

Les bigbore sont pas mal sur les pistes a faible grip, c'est plus constant sur 5min

Share this post

Link to post
Share on other sites

Christophe,dans tes archives,est-ce qu'il y aurais un kit prévu pour passer ma LP en CX ???

Share this post

Link to post
Share on other sites

Wahou un diff a pignon sur la Choum super c'est une adapatation d'un spec-r X-ray ou tam?????

C'est un truc que je tenterais bien!!!! juste pour voir!!!:grin:

Share this post

Link to post
Share on other sites

Ah ben je suis super content pour toi!

tu vas voir tu seras conquis! ;-)

à savoir maintenant la provenance de ce diff et s'il nécessite des ajustements ( petits usinages ou autres ) pour prendre place.

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now