[JMay]

Update on the steering option this is now available either as an option on existing chassis (WB dependent) or as an adjustable chassis as shown in previous post. Andy Broster who helped and inspired the development has kindly created a video of the new chassis in action complete with crash testing.

https://www.youtube.com/watch?v=tGyWWVC5r_E

Cheers
             JMay.

[JMay]

Little go do it project involved in recently. 

   

MRRC guide for wood that takes modern 4mm braid and ferrules. Guide blade is 22mm long (matches our VIP guide) and 1.8mm thick. The guide has 2 slots as per the original MRRC to take the tang from the steering unit. 

Cheers
             JMay

[JMay]

Something that has been on the workbench/CAD for while is the JGTC RX7. This is now available with rear wing, chassis & interior  (glazing to come later) with IL or AW pod and boxer or S can motors configurations.

Below is a WIP  (thanks go to Nigel for the pic) with its IL S can chassis.

   


Cheers
               JMay

[JMay]

Elsewhere in the 3dp section have been showing some pics of my Lola T333CS full width nose in its off the printer status, below is the finished article on its maiden race meeting at the Avon slot car club.

   

(Thanks to Danny for building this up for me).

Some compromises made in the design to get a slot car chassis under with AW boxer but it has the look of the full size car. The version shown is a wood track specific race version with lightweight carbon fibre body and chassis utilising a jet flag guide. Available now via the FB page or IM on this forum.

Cheers
            JMay

[Bazzer]

JMay

Nice work there.

B.

[JMay]

Thanks Bazzer.


Also in the works the later Lola 530VDS.

   

   

I started designing the T333 first that sort of meandered around whilst trying to work out the CAD geometry, so started the 530VDS then car parked that in favour of going back to the T333 as it would be easier to park the AW boxer chassis under...

Will get back to the 530 at some point and redo the cockpit rear and intake as the T333 came out a lot better in that area so can apply the lessons learnt back into the 530.

Cheers
              JMay

[JMay]

Sidewinder chassis for the 1/24 BRM/TT A112 Autobianchi.

   

   

And the chassis in carbon fibre PLA.

   

Chassis mounts using the original 4 point BRM body posts and has the centre spine flex system where the guide holder is connected to the pod. 

Cheers 
             JMay.

[JMay]

For a variety of reasons been on a shut down in Q1 of this year, but slowly ramping back up now, and the designs I have been dabbling with are now getting to be printed and finished off. Below is a 1980s generic F3 car in 1/24 scale (draft version shown alongside a SCX 1/32 F1) as this is small enough to still fit on most tracks (overall width is 70mm). 

   

Next picture is the evolved version with numerous tweaks for ride height, chassis to shell fit, driver too small, print issues and utilising 1/24 BRM IL cogs to give a higher ratio to off sett the wheel diameter and ensure reasonable brakes. 

   

Chassis has a 3 point pod separate from the chassis and can be mounted tight /loose or sprung and the rear axle is on 3mm ball races.

IM either here on Slotracer or the FB page for further details.


   

Front wheels are carbon fibre with TPU printed tyres which with the TPU rear wing (virtually tear proof) will be included in the kit with the driver. Rear wheels and tyres are the BRM Escort/Kaydett. 

Cheers

           JMay

[Kevan]

That's an interesting chassis John, looks pretty stiff, should handle well.

[JMay]

Kevan,
The chassis is something been working on over the break taking the SW chassis I did for the A112 and removing the torsion arms where I wanted a chassis that could meet the no suspension rule for club racing, yet have springs added if so required. The other advantage is that the same chassis will take a range of IL pods for different motors so quicker to come up with motor permutations. The chassis is a fork design with the pod tucked in secured on 3 points, front and sides and have used a ‘bridge’ to stiffen the whole assembly secured with 6 screws.


Ran the ‘production’ F3 around the GT Raceways Battlesbridge Ninco track last night and pleased with the performance using the 10:36 ratio and the NSR 25K evo. The draft version running 9:28 was hopeless on brakes, changing to 8:30 was too slow so redesigned the chassis to take the larger BRM IL cogs (34 & 36T). Need to spend time tweaking the set up (front axle ride height, & pod screws) but the design is working well, so will leave as is for the time being.


The front tyres work well as the TPU is naturally ‘greasy’ so zero grip. Using my own wheels (based on BRM dimensions) with a single lip gets round the issues of getting the tyres on/off and the tyres were designed to have zero clearance to the hub and hence are a tight slide fit.


Cheers
JMay.