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Offline chuckxc

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Made a better chain guard
« on: November 17, 2017, 11:11:47 PM »
The XC plastic chain guard broke too many times off-road, flimsy, so I made a new one using aluminium. Here it is.
Laterally unstable unless moving.

Offline KildareMan

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Re: Made a better chain guard
« Reply #1 on: November 18, 2017, 08:12:22 AM »
Looks good. You could sell those.
Stupid is as stupid does.  Look Dad... No hands!!

Offline digger06

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Re: Made a better chain guard
« Reply #2 on: February 19, 2018, 09:34:11 PM »
as long as the 2 pop rivets in the middle don't fret under use

Offline chuckxc

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Re: Made a better chain guard
« Reply #3 on: February 20, 2018, 02:02:02 AM »
Never ceases to surprise me how some people bother to make useless posts without a clue as to what they are writing about. Such is the Internet I guess.
Better they study inertial mass, metallurgy,   shear, tension, and compression forces before they feel compelled to post.
(Btw, 7 yrs and 100k km, half dirt, and my pop rivet attachment is as good as new.)



Laterally unstable unless moving.

Offline digger06

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Re: Made a better chain guard
« Reply #4 on: February 20, 2018, 04:01:51 AM »
Wow touchy. Obviosly you jumped the gun and took it as an attack. Sorry but it wasnt..
Iv only been a mech engineer for over 34 yr. What would i know.i was merely pointing out the weakest point were someone to make one less than accuratly.folk tend to drill slivhtly too large for rivetts. .looks pretty new for 7 yrs. Still shiney as new rivetts n paint for 50000 k offroad use. You will have to point me to your supplier.
« Last Edit: February 20, 2018, 04:07:15 AM by digger06 »

Offline chuckxc

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Re: Made a better chain guard
« Reply #5 on: February 20, 2018, 04:34:50 AM »
Apology accepted :001:. Perhaps a bit touchy because I designed and made it myself and posted it only to share if anyone was interested. Just trying to make a contribution to the forum. (Looks shiney because I recently re-painted it to tidy up some stone chips.)
If you look closely you will note two bracing triangle forms, and also redundant rivets. The inertal mass of the alloy guard is minimal. I.e- built like a brick sh#*house. Heaps better than the plastic OEM.
And yes, I do have degrees in Physics and Engineering, since 1972--but who's counting.  :180:
« Last Edit: February 20, 2018, 04:41:32 AM by chuckxc »
Laterally unstable unless moving.

Online Bikertone7

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Re: Made a better chain guard
« Reply #6 on: February 20, 2018, 08:14:12 AM »
 Really good - can you maker a hugger??  :002:

Sick of repairing one I got from Powerbronze
Other Bikes: 1968 Triumph TR6 650cc (american export model), 1991 Transalp XL600V (everyday runabout), 1979 Kawasaki KL250 Trail Bike project.

Offline chuckxc

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Re: Made a better chain guard
« Reply #7 on: February 21, 2018, 12:03:53 AM »
re: the hugger...Suggestion only, if it were me I'd probably use your old Powerbronze as a form and lay up some carbon fibre cloth with resin. Probably plenty of technique hints on youtube/web. Either make a new one, or reinforce your original.
 
Laterally unstable unless moving.

Offline Paulhere

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Re: Made a better chain guard
« Reply #8 on: February 21, 2018, 08:08:42 AM »
That chainguard - Top job there chuck, thanks for sharing. The stock one is useless. Got me thinking there.
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Offline Derchef1962

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Re: Made a better chain guard
« Reply #9 on: February 21, 2018, 09:16:45 AM »
there is one like this already on the market https://sw-motech.com/Produkte/Schutz/Schutzprodukte/4052572009741.htm I am using this one since 2013 works perfect
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