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Author Topic: Girder Forks.  (Read 77972 times)
Olds
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« Reply #30 on: June 11, 2013, 09:28:24 AM »

Doh ! Like a complete fool I forgot to drill the pinch bolt hole before radiusing the top slab. After breaking three bits trying to drill into the radius . I ended up cutting the bolt head counter bore out with a hammer and chisel, to give a flat surface to drill into.
One hole drilled tapped and counter bored, 4 hours of swearing at my own ineptitude. Embarrassed
The slot will be cut once the pivot tube is welded on.
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Getting older but no wiser! Just using bigger hammers.
The answer to most problems, fire and lots of it.
Manky Monkey
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« Reply #31 on: June 11, 2013, 03:59:29 PM »

Nice to know I'm not the only one who messes up!
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On the last freedom moped out of Nowhere City.
steven brock
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« Reply #32 on: June 11, 2013, 05:24:13 PM »

How are the links attached
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steel wasn't invented to make bloody staples with!
Olds
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« Reply #33 on: June 11, 2013, 06:17:09 PM »

For once, I am sort of working things out as I go along, but the plan is for the links to be bushed and running on fixed but replaceable shafts, threaded each end, fitted into tubes welded onto the yoke slabs ( if that makes any sense ). Bottom yoke tube will be welded to it's yoke once everything is assembled to ensure correct geometry  (hopefully). The reason for bushing the links rather than the yokes is that it allows a larger diameter shaft and makes changing the bushes easier.
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Getting older but no wiser! Just using bigger hammers.
The answer to most problems, fire and lots of it.
steven brock
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« Reply #34 on: June 11, 2013, 06:37:22 PM »

I'm resuming mine soon so keeping an eye on what you do Smiley
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steel wasn't invented to make bloody staples with!
Olds
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« Reply #35 on: June 11, 2013, 06:48:11 PM »

Well don't expect fast progress. Especially if we get good weather.
Despite the drawing, I am also looking at using single large tubes, as an alternative to the twin tube triangulated setup, but don't think they will suit the look of deliverance Undecided
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Getting older but no wiser! Just using bigger hammers.
The answer to most problems, fire and lots of it.
jevi
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« Reply #36 on: June 12, 2013, 11:12:35 AM »

Have a look at Brit Chopper web site - Chris Ireland aka 'Desperate' uses motorcycle wheel spindles on his version running in olite bushes
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Olds
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« Reply #37 on: June 12, 2013, 05:33:33 PM »

Thanks for that, had looked into this but getting four new wheel spindles was going to be a lot more expensive than making my own.
Plus I really want to make maintenance easy, so I want to be able to remove any link with its associated bushes without having to strip the whole front end.
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Getting older but no wiser! Just using bigger hammers.
The answer to most problems, fire and lots of it.
steven brock
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« Reply #38 on: June 12, 2013, 07:14:40 PM »

Cracking looking girders
http://i1061.photobucket.com/albums/t466/steveatthemorgue/cool%20bike%20pics/null_zps855fe34a.png
Girder Forks.
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steel wasn't invented to make bloody staples with!
ByzMax
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« Reply #39 on: June 14, 2013, 07:12:10 AM »

Nice to see more girders.

Here's some of mine

http://i1105.photobucket.com/albums/h351/ChoppitPics/101_2436_zpsd8056393.jpg
Girder Forks.


http://i1105.photobucket.com/albums/h351/ChoppitPics/101_2434_zpsc9672e8e.jpg
Girder Forks.


http://i1105.photobucket.com/albums/h351/ChoppitPics/SAM_1267_zpsfe0da808.jpg
Girder Forks.


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http://www.choppit.co.uk
Manky Monkey
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« Reply #40 on: June 14, 2013, 08:40:35 AM »

Them's nice Iain.
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ByzMax
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« Reply #41 on: June 14, 2013, 11:50:13 AM »

Why thank you good Sir. I'm fairly pleased with em too!


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Ironic that the homeless persons drink of choice is Tennants eh?

http://www.choppit.co.uk
Olds
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« Reply #42 on: June 20, 2013, 08:37:44 PM »

Very nice. I really like the end caps.
Not a lot done recently. Well actually, only managed to finish shaping the bottom yoke slab and pressed in the stem. The tube for the legs arrived and it's rubbish. I can actually see that it's not of uniform wall thickness, so that will get relegated to making garden furniture or something.
Luckily there is no hurry Cheesy
« Last Edit: June 20, 2013, 08:40:34 PM by Old Newbie » Logged

Getting older but no wiser! Just using bigger hammers.
The answer to most problems, fire and lots of it.
trikerpete
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« Reply #43 on: June 21, 2013, 02:19:52 PM »

so what spec tube did you order?
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what do you mean, I cant do that !! Smiley
Olds
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« Reply #44 on: June 21, 2013, 08:47:35 PM »

Was supposed to be 21.3 x 3 wall cold finished. Diameter varies between 21.13 & 21.44 and wall thickness is around 2.75. Always knew the size would be border line and now I've handled the stuff decided to go for 25.4 x 3.25 cds. Just got to find some at a reasonable price.
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Getting older but no wiser! Just using bigger hammers.
The answer to most problems, fire and lots of it.
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