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Front mudguard - nylon bolts?

Posted: 29 Aug 2021, 9:02pm
by David9694
So the unfaded gold ESGE mudguards I brought a whole bike to get have a single set of stays a the front. The pop-off systems all assume single-piece double front stays.

I’ve ordered some nylon bolts in the hope that these will break should the front mudguard ever jam.

Am I a totally original mechanical genius?

Re: Front mudguard - nylon bolts?

Posted: 29 Aug 2021, 9:21pm
by Jdsk
Nylon *bolts are used on wings on trackday cars. Some people even saw halfway through them to weaken them further.

Jonathan

Or, indeed, screws. ; - )

Re: Front mudguard - nylon bolts?

Posted: 30 Aug 2021, 5:32am
by pwa
This sounds to me like one of those "great ideas" that may in reality need more fine tuning than is practical. You simply won't know how much force it takes to free the stays until you need that to happen, so you will end up riding around not knowing for sure whether you have a safe system.

Re: Front mudguard - nylon bolts?

Posted: 30 Aug 2021, 7:45am
by Steve O'C
These are designed for front guards with a single stay
https://www.bikemonger.co.uk/pdw-safety ... 9840-p.asp
PS I am sure you are a genius :)

Re: Front mudguard - nylon bolts?

Posted: 30 Aug 2021, 7:47am
by colin54
How about getting some double stays and cutting one leg off leaving the fixing eye intact and using the standard plastic quick release block ?

Re: Front mudguard - nylon bolts?

Posted: 30 Aug 2021, 9:24am
by 531colin
Single stay plastic mudguards are too floppy for me....if it was me, I would add the extra bridge and use a full set of SKS (double) stays and the quick release block.
The Velo Orange Q/R system for their single stays comprises a straight stay clamped in a clip with the friction adjusted by a nyloc nut....thats probably the least floppy single stay Q/R system.....but theirs are metal guards, which are more rigid.
The things Steve linked are also for metal guards.
These are cheap enough, but bits are plastic and they are designed for wide guards, which are again more rigid. https://www.amazon.co.uk/SKS-U-Stays-Ve ... B008ZTLQ92

Re: Front mudguard - nylon bolts?

Posted: 30 Aug 2021, 4:59pm
by David9694
colin54 wrote: 30 Aug 2021, 7:47am How about getting some double stays and cutting one leg off leaving the fixing eye intact and using the standard plastic quick release block ?
I’m cleverer still, it turns out, or rather Mr SKS is. I did some swapping around of plastic fork eye attachments - the SKS Secu-clip 3.0 accepts the end of a single stay because a single stay forms the same round shape as the end of a double.

I wouldn’t be averse to adding a second clip and running double stays.

Maybe I’m using the wrong eye bolts at the mudguard end, but because the eye bolts will pass through the hole in the clip, I find myself having to run the eye bolt nut on the inside, so the stay passes outside the clip. The clip doesn’t have a hole allow the (excess) stay to pass through.

Re: Front mudguard - nylon bolts?

Posted: 30 Aug 2021, 5:09pm
by David9694
pwa wrote: 30 Aug 2021, 5:32am This sounds to me like one of those "great ideas" that may in reality need more fine tuning than is practical. You simply won't know how much force it takes to free the stays until you need that to happen, so you will end up riding around not knowing for sure whether you have a safe system.
I wondered if it was an original thought. They might not break, or they might break too soon.

Don’t you wince a bit though when you see a cheap bike running a one-piece stay on alu guards, stay bolted to the forks?