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Magicshine Front Light Adapter Mount for Cateye Flex Tight Band

Securely mount a Magicshine front light to a 31.8mm dia bar with a Cateye Flex Tight band.


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Designed to be fitted to Magicshine front light model HA-III SSC P7-C in place of the standard o-ring style mount block. May also fit newer Magicshine front light models such as MJ-808E - please let me know how you get on!

Print instructions
Tested using PLA, 0.3mm layer height and 45% linear infill, though 30% infill is probably sufficient. No support material is required.

1. Remove the original o-ring style mount block from the base of the front light by unscrewing the single screw.

2. Fit the Adapter Mount using the same screw.

3. Into the grooves on the underside of the Adapter Mount, fit a piece of Cateye brand 'square u-section' rubber strip* (23mm long x 14mm wide x 1mm thick). If the length of strip is correct, no adhesive should be necessary and a snug fit should result. Alternatively, glue a similar size piece of old inner tube in the same position.

Before inserting a Cateye brand Flex Tight band - or a large tie-wrap - through the mounting hole in the Adapter Mount, first gently bend a radius into the last 50 mm of the band. If you find the threads of the Flex Tight band catch on inside of the mounting hole, try bending the end of the band a little more. Also, continue easing the band into round as you draw it through the hole.

Although the Flex Tight band will function correctly when inserted from either end, it is easier to insert it from back to front of the adapter block. Doing so also places the free end of the band towards the front where it won't be able to annoy your knees.

Nice to know
The adapter has undergone successful field testing at night over some gentle-moderate single track on the Malvern Hills, UK.

Although the rubber piece applied to the underside of the Adapter Mount does improve rotational friction-grip, during night testing I found the light held its position just as securely either with or without the rubber piece fitted - and much more securely than the original o-ring style mount block.

Although the Magicshine front light can get warm during use, after disassembling the Adapter Mount from my front light after each of the hour long night rides, I found no evidence of any molten PLA. The cooling fins of the light housing did bite into the Adapter Mount, but no more than they bit into the original mount block, as the photos show.

All trademarks mentioned remain the rightful property of their respective owners, of course.

* Somewhere, you still have all the left-over bits of the cycling accessories you ever bought.



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5424d2f8126ec6f06ebaec770ff766d2?default=blank&size=40DonNH added this to the Mine collection ago
35b5cfad492eb76efe60c7a4794cc5eb?default=blank&size=40DirtyThirty added this to the Bicycle collection ago
Mini 9b7727ab386fef2f7cb207d59ed0357aHamish Mead published this design ago