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Olds
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« on: May 30, 2013, 04:00:16 PM » |
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Not having anything to actually build is driving me nuts, so I've decided to have a go doing my own girder forks.  The Manta Ray graphics design ( http://mantaraygraphics.com/girder.html) looks to be quite well thought out so will be based on that, though will be 8" shorter to fit the trike. Have ordered most of the steel that I don't already have and am trying to find suitable bushes for the links. Might end up making those as well. The steering stem I already have. At the moment it's still attached to a Z750Ltd bottom yoke so will need to be carefully cut out. Finding a suitable suspension unit, with the right spring rate might be problematic, as I really want to keep to a single unit, the forks will be quite narrow to fit my existing wheel / brake setup. Keeping costs down is as always a priority. Helpful comments and suggestions are, as always welcome. |
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« Last Edit: May 30, 2013, 04:44:27 PM by Old Newbie »
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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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Manky Monkey
Administrator
Hero Member
Karma: 264
Posts: 55102
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« Reply #1 on: May 30, 2013, 08:04:45 PM » |
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Sounds interesting Dave. Looking forward to following this one.
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On the last freedom moped out of Nowhere City.
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steven brock
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« Reply #2 on: May 30, 2013, 11:12:22 PM » |
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Great design that
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steel wasn't invented to make bloody staples with!
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terry t
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« Reply #3 on: May 31, 2013, 07:43:21 AM » |
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weren't they similar to the ones on TAZs trike.
if you make them Dave don't us there trail set up of 4.5" that's for a bike. you need to work on 1.5/2.0"
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Olds
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« Reply #4 on: May 31, 2013, 10:03:26 AM » |
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Planning on 1 5/8" (41mm) trail.
General dimensions,
axle to bottom pivot 21"
axle to top pivot 30"
width - 7 1/2" cl to cl of down tubes ( blades )
Links - 4" lg
Blade tubes- 21.3mm x 3 wall cfs
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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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Olds
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« Reply #5 on: June 03, 2013, 07:48:38 AM » |
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Have done initial drawings and found a few changes to basic dimensions are needed
Axle to bottom pivot cl 22.25"
Axle to top pivot 31.5"
And links will have to be 4.72" long
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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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Manky Monkey
Administrator
Hero Member
Karma: 264
Posts: 55102
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« Reply #6 on: June 03, 2013, 02:15:34 PM » |
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I couldn't do the drawing, let alone make the part.
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On the last freedom moped out of Nowhere City.
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hunter
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« Reply #7 on: June 03, 2013, 03:11:35 PM » |
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Olds is that drawing to scale  |
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Olds
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« Reply #8 on: June 03, 2013, 05:08:56 PM » |
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Olds is that drawing to scale Well I thought it was. 1:2 & 1:1 But the smiley face makes me think I may have got something wrong.  It's not a production drawing just a basic layout to determine pivot locations and test ideas. |
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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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spanners
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« Reply #9 on: June 03, 2013, 09:19:53 PM » |
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Olds is that drawing to scale Well I thought it was. 1:2 & 1:1 But the smiley face makes me think I may have got something wrong. It's not a production drawing just a basic layout to determine pivot locations and test ideas. i think what ,hunter, wants to do is nick youre plans  |
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LIVE FAST and DIE YOUNG,, past 50 AND STILL HERE NOW. WAITING. FOR. THE. GRIM. REAPER
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hunter
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« Reply #10 on: June 03, 2013, 09:38:32 PM » |
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NO.No.No.I was leg pulling,
Very good drawing though.
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Baychimp
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« Reply #11 on: June 03, 2013, 11:02:35 PM » |
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Hi Dave did you produce this excellent drawing by hand, or is it computer CAD programme.
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triker_Chewie
Hero Member
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west aussie dreamer
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« Reply #12 on: June 04, 2013, 01:04:16 AM » |
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I think it's pad, not cad
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« Last Edit: June 04, 2013, 01:06:12 PM by Manky Monkey »
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I hate when people compare Lemmy with God, i know he is great but he is not gonna be Lemmy, ever If your Dad hasnt got a beard, you've got two Mums there's no point it lookin' pretty if we can't drive it.
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Olds
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« Reply #13 on: June 04, 2013, 05:36:11 AM » |
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Silly sods, its PAP Pencil and paper.  |
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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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hunter
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« Reply #14 on: June 04, 2013, 09:30:58 AM » |
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That could be paper and pencil.
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