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Author Topic: One for the album  (Read 6583 times)

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Offline TooFastTim

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One for the album
« on: May 13, 2013, 06:38:39 pm »
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TM BILL

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Re: One for the album
« Reply #1 on: May 13, 2013, 06:43:45 pm »
Must have spent all his money on that fancy linkage and had none left for a new tyre  ???
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Offline TooFastTim

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Re: One for the album
« Reply #2 on: May 13, 2013, 07:12:14 pm »
So you noticed that too  ;D

Bill, Bulto played with the parallelogram suspension for a few years but eventually gave up on it.
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TM BILL

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Re: One for the album
« Reply #3 on: May 13, 2013, 07:23:03 pm »
What are the percieved advantages of the system
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Offline TooFastTim

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Re: One for the album
« Reply #4 on: May 13, 2013, 08:00:04 pm »
Constant chain tension with long travel suspension.
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Offline jerry

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Re: One for the album
« Reply #5 on: May 13, 2013, 08:42:22 pm »
Not to mention the chain is on the other side! WTF?
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Offline jerry

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Re: One for the album
« Reply #6 on: May 13, 2013, 08:46:06 pm »
Also pipe is I think on wrong side and there is some weird sprocket cover happening with the drive somehow switched to the other side. Also something going on with the kickstart. Who belongs to this thing? Tell us more please. J
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Offline TooFastTim

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Re: One for the album
« Reply #7 on: May 13, 2013, 09:00:54 pm »
Quote from: jerry on May 13, 2013, 08:42:22 pm
Not to mention the chain is on the other side! WTF?

Good point. I hadn't noticed. But if you look carefully it uses a cross-over shaft where the s/arm pivot would be.

Jerry, the exhaust is on the same side as the later (MK11 and 12) pursangs.It seems hand made and a pretty good job too.

This seems to be a very good home made example and I have recently, seen a pic of the factory version. When I find it I'll post it.
« Last Edit: May 13, 2013, 09:12:30 pm by TooFastTim »
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Offline TooFastTim

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Re: One for the album
« Reply #8 on: May 13, 2013, 09:18:00 pm »
Same bike. Other side:

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Offline jerry

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Re: One for the album
« Reply #9 on: May 13, 2013, 09:48:53 pm »
Nice work Tim it's got me stuffed why all the trouble to shift the drive to the other side not to mention the extra weight. Where did you find the photo? J
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Offline jerry

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Re: One for the album
« Reply #10 on: May 13, 2013, 09:50:33 pm »
Just noticed its a right shift version too. J
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Offline firko

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Re: One for the album
« Reply #11 on: May 13, 2013, 09:52:05 pm »
Quote
it's got me stuffed why all the trouble to shift the drive to the other side
Just guessing but perhaps it's to take advantage of some sort of torque reaction? ???
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Offline David Lahey

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Re: One for the album
« Reply #12 on: May 13, 2013, 10:12:40 pm »
The main chain is on the RH side because there is a lay shaft that is driven from its LH end from the usual gearbox output sprocket. The main chain drive is on the RH end of the layshaft because it is neater to do it that way with the other chain on the LH end.
The funny cover seen on the LH side is enclosing the first chain and the LH end of the layshaft.
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Offline jerry

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Re: One for the album
« Reply #13 on: May 13, 2013, 10:22:08 pm »
Yeah but why? What's the advantage? J
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Offline KB171

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Re: One for the album
« Reply #14 on: May 13, 2013, 10:39:26 pm »
Model # 171 /172, Pic outa the { Historia de la Pursang} book may even be the same bike .

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