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Olds
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« Reply #105 on: September 23, 2013, 08:21:31 PM » |
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Sort of. Chinese 125, so I don't expect the chrome to last long  . I tested them out on my Suzuki and the damping seems fine. |
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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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klogan45
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« Reply #106 on: September 24, 2013, 06:46:40 PM » |
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Very very very nice work ON. Just what i aspire too. One of these days..... As for my workmate can i have it back when you've finished with it  |
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Confucius say woman who flies upside down has crack up!
He who holds The Angle Grinder of Destiny holds the fate of bikekind in his hands.
Where did that 13mm spanner go then?
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Olds
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« Reply #107 on: September 24, 2013, 06:53:38 PM » |
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Bottom shock mounts made and fitted. One side is tapped m12x1.75. The pivot tube they are welded to, is only tacked to the forks at the moment, so I can adjust the ride height once everything is assembled and fitted to the trike. I will do the same with the bottom pivot tube on the 'yoke' so that I can adjust the trail.
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« Last Edit: September 25, 2013, 06:54:39 AM 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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klogan45
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« Reply #108 on: September 24, 2013, 09:19:50 PM » |
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Ok......its dumb question time i'm afraid......... How do you know what length to make the links? Is there some special rule or something  Making girder forks is a "black art" to me  Thanks Regards K |
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« Last Edit: September 24, 2013, 09:27:23 PM by klogan45 »
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Confucius say woman who flies upside down has crack up!
He who holds The Angle Grinder of Destiny holds the fate of bikekind in his hands.
Where did that 13mm spanner go then?
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Olds
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« Reply #109 on: September 24, 2013, 09:53:30 PM » |
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It's mainly a matter of compromises.
The links have to be long enough to clear the back of the forks. The deeper the forks the stronger they are. Longer links give more travel but increase sideways forces on the pivots.
You also have to take into consideration the space the shock unit takes up and make sure that if will not foul on the headstock, or the top fork pivot tube, at the limits of it's travel.
The forks have to be designed to suit the frame, to keep steering geometry within reasonable parameters.
I think the usual length of links is between 80mm and 110mm but there is no hard and fast rule.
My frame was initially designed with girders in mind and fitting telescopics, left me with far too much trail.
Because I decided on deep forks, the links are quite long at 120mm and this is why I went with bearings in the links, as they are easier to replace as they wear.
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« Last Edit: September 25, 2013, 06:26:00 AM 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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Olds
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« Reply #110 on: September 28, 2013, 02:55:36 PM » |
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Top yoke pivot machined and pressed in. Trial fitted and everything lines up OK.The bushes are a little tight at the moment but no binding. The real test will be when I finish the lower pivot  If all the pivots are parallel all will be fine. If not.......... |
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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 #111 on: September 28, 2013, 06:36:52 PM » |
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I wish I had your cleveriness Dave.
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On the last freedom moped out of Nowhere City.
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Olds
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« Reply #112 on: September 28, 2013, 06:38:36 PM » |
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Not that clever, still don't know if they will work. Apart from a couple of bushes being too tight all seems to be well.
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« Last Edit: September 28, 2013, 06:43:33 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 #113 on: September 28, 2013, 06:42:46 PM » |
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Very nicely done.
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On the last freedom moped out of Nowhere City.
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stumpy
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« Reply #114 on: September 28, 2013, 06:54:17 PM » |
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looking well have you gained much trail ? be interesting to see i it under over steers in comparison to what you have
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stumpy can't voice his opinion here
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Olds
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« Reply #115 on: September 28, 2013, 07:16:37 PM » |
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Hopefully lost a lot. The steering is quite heavy at the moment but very stable in a straight line.
Had way to much trail to begin with at approx. 6 1/4" (159mm) If I've done my sums right I should end up with 1 5/8" (41mm)
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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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stumpy
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« Reply #116 on: September 28, 2013, 07:28:16 PM » |
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everyday is a school day.... so please sir do you want my apple ??
in pic above are they not 4" quarry tiles on your floor?
if yes how can you get 41mm ?
my pan has 27.5 degrees rake and 101mm trail
how did you compute those figures ?
ill sit in the corner for the present
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stumpy can't voice his opinion here
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Olds
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« Reply #117 on: September 28, 2013, 07:39:01 PM » |
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Deliverance has 41 degrees of rake (and the floor tiles are 6")
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« Last Edit: September 28, 2013, 07:47:26 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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scannerzer
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« Reply #118 on: September 28, 2013, 09:07:14 PM » |
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as usual those look good ON
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stumpy
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« Reply #119 on: September 29, 2013, 09:49:09 AM » |
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stumpy can't voice his opinion here
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