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  • admin uploaded 2 photos in the album Kapunda Test and Tune June '25
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  • admin uploaded a new video
    My Aussie built Cycle Kart Walk-around
    This is a walk-around video of Tim Bowtell's Aussie built Cycle Kart. He explains how he went about this low-cost build using a secondhand go-kart, scrap materials and simple tools for a total cost of around $1,000 AU.

    Thanks for the share Tim
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  •   Pursang commented on this post about 6 months ago
    Hi Admin, Where can I discuss with the committee the details of the exemptions for the rear wheel of a 3 wheel (morgan style) Kart.
    Cheers, Daryl
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    • I would like to use a 14" pit/minibike wheel. The shorter spokes will resist the side loads better. The economical tyre options, other than MXI would like to use a 14" pit/minibike wheel. The shorter spokes will resist the side loads better. The economical tyre options, other than MX knobbys, are scooter tyres of 90/90 or 90/100 profile, ie. slightly wider than 3.25 Overall diam is close to 17" postie and is not seen under the rear bodywork.  More ...
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    • Hi Daryl. It seems like a reasonable change. Let me look in to this and get back to you.
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    • Thanks.....I will keep working on the front!
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    • Hi Daryl.

      Looking at other Morgan interpretations they generally use a 17" rear wheel. However, the guidelines are really there to ensure thatHi Daryl.

      Looking at other Morgan interpretations they generally use a 17" rear wheel. However, the guidelines are really there to ensure that (apart from safety) the overall aesthetics are consistent across all builds. The use of a common wheel diameter, wheelbase and track, is partially used to ensure that the scale of all builds are visually similar. The use of similar dimensions for wheel base and track also ensure similar handling characteristics.

      The use of a smaller diameter rear wheel in this case should not impact the overall aesthetics, because as you state, the rear wheel is mostly hidden. The additional stated benefits are also noted with the additional comment that the reduction in tyre contact area due to the smaller wheel diameter, is offset by the use of a wider tyre. An exemption for the use of a smaller wheel with a larger tyre in this case is therefore granted.

      Track and wheelbase rules still apply unless there is a specific reason to change them for the case of a three wheeler. Happy to discuss that further should the need arise.

      Thank you for reaching out. I will email you out a formal exemption for your records.
        More ...
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    • Thank you, Track and wheel base rules are fine for me. Onward and Upward! Cheers, Daryl.
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  • admin started a new discussion, How to make bonnet louvres
    How to make bonnet louvres
    After reading Kingshill's post on making bonnet louvres for his 1930's Amilcar Build I thought it a good idea to capture it here in the forums for future reference.

    https://cyclekarts.org.au/build-pages/1930s-amilcar

    Screenshot 2024-10-30 at 8.39.04 am.png

    Thanks for sharing :)
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  • admin posted a new article
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  • admin posted a new article
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  • admin posted a new article
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  • admin posted a new announcement
    SAVSA Event invitation
    Hi All. The club has been invited to attend a number of events by The South Australian Speedcar Association. The invitation is to help boost numbers and participation in SAVSA organised events which also include track time as part of test and tune events held by SAVSA at the Kapunda Track. Whilst SAVSA are SA based, the invitation was made to...
    Hi All. The club has been invited to attend a number of events by The South Australian Speedcar Association. The invitation is to help boost numbers and participation in SAVSA organised events which also include track time as part of test and tune events held by SAVSA at the Kapunda Track. Whilst SAVSA are SA based, the invitation was made to the club and so is extended to all members. I have posted details over in the main forums - https://cyclekarts.org.au/forum/cyclekart-club-events. You will also find the events in the calendar right here in the website. Clive from the Adelaide Cyclekarts group has already attended one event at Murray Bridge with his Cyclekart. The next event is at The Bend on the 27th October. It would be great to get as many attendees as possible. Please check out the forum post for more details
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  • admin liked the page, 1930s Amilcar
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  • admin likes a discussion post
    Engine mount vibration insulator
    For you guys with 3D Printers, this engine mount vibration insulator may be of interest.
    It needs to be printed from flexible PLA with high percentage infill (I used 100% although better results at the expense of crushability can be acheived at...
    For you guys with 3D Printers, this engine mount vibration insulator may be of interest.
    It needs to be printed from flexible PLA with high percentage infill (I used 100% although better results at the expense of crushability can be acheived at 75%).
    This has worked really well on the Chinese clone engine I have.
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  • admin started a new discussion, 100mph in a CycleKart...
    100mph in a CycleKart...
    •   General
    •   Tuesday, 02 April 2024
    434072841_10161635537915879_8367746743007344937_n.jpg

    Don't forget that the UK is a day behind us here in Aus ;)
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  • admin replied to a discussion, Reverse gearbox
    Interesting that this discussion popped up in my feed. The guidelines that we are looking at adopting from Cyclekarts Great Britain specify that a hand brake is fitted. The intent of this is to prevent a runaway Cyclekart.

    Seems that runaway...
    Interesting that this discussion popped up in my feed. The guidelines that we are looking at adopting from Cyclekarts Great Britain specify that a hand brake is fitted. The intent of this is to prevent a runaway Cyclekart.

    Seems that runaway Cyclekarts are a common occurrence at meetings, mostly as to start the Cyclekart you have to get out of it and stand next to it to pull the start cord. The issue arises when the throttle is not closed properly, the revs pick up which is enough to engage the centrifugal clutch and so the Cyclekart takes off without the driver under its own steam. This has been identified as a big problem in the US too, where every major meeting has one or more runaway Cyclekarts.

    Different proposals have been put forwards in the US. One is that when the Cyclekarts are started they need to be 'tethered' to something solid, like a car tow bar or lamp post. Whilst this sounds good in principle and may work for certain events, in practice it's not a great solution as it does not scale very well and still leaves a residual risk from when the driver untethers the Cyclekart to when they get in it. There is also a potential trip hazard from the tether.

    A different solution has been proposed at some events where the driver wears a safety lanyard, similar to the ones worn by Skidoos and jet skis. if the driver becomes separated from the vehicle, the lanyard becomes detached and a safety switch stops the engine. The issue here is that whilst this is fine for things like motorcycles, skidoos or jetskis, as the lanyard port is adjacent to the hand grip, Cyclekarts do not use handlebars, so the hands are constantly moved around the steering wheel, often crossing over with the opposite hand. This is cumbersome and introduces the risk of the lanyard getting tangled, which in turn could lead to the driver losing control of the Cyclekart in normal operation.

    The other issue with the lanyard solution is that it is not technically a valid safety control as it is still possible to start the Cyclekart without the tether being attached to the driver. It is completely reliant on the driver remembering to put the lanyard on, which makes it an administrative control at best. Solutions such as these are often seen as an inconvenience, which means that they are statistically much more likely to be defeated or ignored.

    In my opinion the fact that both of these solutions introduce a secondary risk means that they simply should not be considered in the first place.

    Which leaves fitting a handbrake as the most logical and safest solution. Technically you could argue that it is still possible to start the Cyclekart with the Handbrake off, but that could be remedied with a simple switch. However I think that this is not necessary as integrating it with the electrical system also acts as a barrier to people installing the handbrake in the first place. Handbrakes are common enough that a majority of people are already familiar with them.

    With all of this considered, the handbrake clause is likely to stay as it most elegantly addresses what is an identified risk.
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