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Homemade stuff/top bodges


DAMON WATSON.

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After realising I love a good customized part/top bodge/ fabricated part I wondered what else is out there?

Keep its trials, or atleast trials related :) interested to see what the creative mind of a rider can rustle up

This is mine, set of rustled up vbrake adapters, the prices of these things made me think I could probably make a set for pittance, rather then fork out £20/30.

Pleased with the outcome of these, not threaded in the brake bosses, just welded the back and tac'd the front edge.

Show me youres!post-37711-0-82653600-1431190760_thumb.j

Edited by DAMON WATSON.
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Yeah I've made a few bits. Made some bearing cups to adapt a Echo/BMX Spanish BB to take shimano through axle cranks. Made some spacers to adapt a cannondale headtube take a normal headset. Made a bolt in rear axle for a hope bulb hub. When I was at college I made a 50mm cnc stem from a solid lump of ally for my mtb. Easy to do with access to a lathe

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Not incredible, but I lostall my bashring spacers, so I took a disc rotor spacer and filed it out a bit, and because it has the 6 holes for the rotor bolt, the bashring sort of "locked" into the holes and didn't rotate when i tightened the freewheel. That or the immense amount of tape wrapped around my barends so they actually stay in place :P

I found the bashring spacers a week later, but this one is better. It's a perfect size so that it completely covers all of the freewheel bar the rotating cog itself.

post-37174-0-53903400-1431339945_thumb.j

Edited by Herbertlemon102
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How about what the BB i made up out of bits off the 'shelf o' sh*te' over last christmas that I've dubbed the 'frankenbracket'

Truvativ ISIS axle

Drive side onza bearing

The centre tube section is from a shimano un54 square taper

NDS bearing is try-all

The BB cups are onza and try-all

The spacers the cranks butt up against are filed down onza ones, then faced on some wet n dry, as it's a 118mm axle

And the bolts are Trialtech m12.

5 manufactures, one BB! Works just fine.

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Forrteh, that tensioner is sick! I'm going to make something similar, iv bin thinking through ideas similar actually as I need a hub mounted setup but I need lots of chainwrap, exactly like youres, we're the pivot is did u use a bolt? Or a bearing? Interested to know how you got it to pivot freely

Edited by DAMON WATSON.
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I'll do a drawing later when I get to work, it mounts of the standard mech hanger bolt. Weighs about 48g, tensions perfectly and cannot be hit unless something physically goes between the spokes and chainstay :)

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Quick autocad drawing of the tensioner, I made up the dimensions/proportions as I don't have it here to measure but it's about right.

The carbon frame pivots around the top bolt whilst the tension spring pulls the rear pulley upwards. The chain wrap over both jockey wheels gives a perfect natural chainline with 18:15.

post-6335-0-55868400-1431509318_thumb.gi

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Quick autocad drawing of the tensioner, I made up the dimensions/proportions as I don't have it here to measure but it's about right.

The carbon frame pivots around the top bolt whilst the tension spring pulls the rear pulley upwards. The chain wrap over both jockey wheels gives a perfect natural chainline with 18:15.

looks perfect, i hope it will work with 18-14 just as well (A) thanks pal

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Yup will work fine with smaller sprockets, to accommodate a larger rear sprocket the tensioner arm needs extending which can then start clashing with the inside of the chainstays.

Mine fitted just perfectly in the triton frame but there shouldn't be so much difference between frames that a little design work won't get around.

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  • 2 weeks later...

post-37303-0-62390600-1431204917.jpg

Mine. :P

Hope mono trial lever blade on an upside down 04 maggy body, because that's what I had and I wanted to ride the next day. :lol:

Worked really well, ran it on that bike for a few months.

Edited by Muel
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My first tensioner I made. Worked awesome and was super light.

th_IMG_1946.jpg

My homemade v adapters. It uses the bottom 4 magura mount as the pivot point. One long 4mm bolt clamps the arm and adapter down.

IMG_3101.jpg

Edited by toyota200x
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  • 2 weeks later...

Not a pic of the my bike, but I did this once just to keep tension for a group ride. Its called a 'ghost tensioner.' Snapped my hanger the night before and couldn't get the spoke tensioner to work out. This made things extra sketchy fun :) had it fall out a few times, but for the most part it worked.

post-29867-0-21420300-1433278107_thumb.j

Edited by cwtrials
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