OzVMX Forum
Marketplace => eBay Finds => Topic started by: tony27 on May 21, 2012, 07:22:10 pm
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Don't see these come up often in this neck of the woods 8)
http://www.trademe.co.nz/motors/motorbikes/parts-for-sale/suspension/auction-477543186.htm
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Pictures worth a thousand words ;)
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Pictures worth a thousand words ;)
Then that ad is speechless ;D
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Tell the seller that, pretty sure Firko would be able to put up a photo of what it should look like
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Pics up now , Shit its handsome :o
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Here we go again... over to you Marc!!! :D
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is it legal or will someone say it's not 70's issue ???
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It's actually a Boyd and Stellings swingarm, US Sports bought the jigs after B&S moved on to factory air conditioning. I've got one on my Maico 350 and a complete Boyd and Stellings framed (with alloy swingarm)TM400. They were the first commercially available and possibly the only truly legal pre 75 alloy swingarm, first hitting the scene in late 1969 I believe. They sometimes have a tendency to bend and/or twist so many survivors have been fitted with gussetting like the one for sale.
Below..my complete Boyd and Stellings framed TM400
(http://i333.photobucket.com/albums/m392/cherie_jones/BSSuzy.jpg)
Below..My beloved 350 Maico showing off its Boyd and Stellings swingarm. It's been on there longer than the steel original ever was and is still straight..ish
(http://i333.photobucket.com/albums/m392/cherie_jones/camden11.jpg)
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Firko my man you are making me drool over the 400 :o
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Original ones like Firkos look the goods :) its that awfull after the fact gussetting that makes them so hideous .
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It's bloody hideous IMHO. Is that really pre 75 legal?
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Firko my man you are making me drool over the 400
It could be yours Dono....I'm planning on selling it later in the year, probably at CD9. You won't get a tricker pre 75 bike than this....190lbs, ready to ride. ;D
It's bloody hideous IMHO. Is that really pre 75 legal?
It's quite legal if you only use the rearmost shock mount. It's only "hideous" because of the tacky looking strengthening gusset. Remove it and weld a more subtle gusset, perhaps intergrating a chain tensioner underneath the arm an you've got a nice addition to your TM.
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They do look a bit cumbersome with those afterthought gussets but I reckon the original version looked pretty neat.
The ‘later Swingarm of the Gods’ took gusseting to a whole new level but they were so bad they were cool.
They were sold under about 3 different names over the years but I think Boyd & Stelling were the original manufacturers.
They were well ahead of there time. Fitting cast and extruded sections together wouldn’t become common place until the late 90’s
From Cycle World 72
(http://i15.photobucket.com/albums/a393/gmcloa/Misc%20bike%20stuff/Superlight-1B.jpg)
(http://i15.photobucket.com/albums/a393/gmcloa/Misc%20bike%20stuff/Superlight-2B.jpg)
(http://i15.photobucket.com/albums/a393/gmcloa/Misc%20bike%20stuff/Superlight-3B.jpg)
(http://i15.photobucket.com/albums/a393/gmcloa/Misc%20bike%20stuff/Superlight-4B.jpg)
(http://i15.photobucket.com/albums/a393/gmcloa/Misc%20bike%20stuff/Superlight-5B.jpg)
(http://i15.photobucket.com/albums/a393/gmcloa/Misc%20bike%20stuff/Superlight-6B.jpg)
(http://i15.photobucket.com/albums/a393/gmcloa/Misc%20bike%20stuff/Superlight-7B.jpg)
(http://i15.photobucket.com/albums/a393/gmcloa/Misc%20bike%20stuff/Superlight-8B.jpg)
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Original ones like Firkos look the goods :) its that awfull after the fact gussetting that makes them so hideous .
No that is actually the before the fact gusseting Bill..... Firkos I suspect has had a form over function trim job.
I like the variety of shock position offered on the original arms, one swingam covered everything from trials to Wiowmaker Hill Climb
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(http://i245.photobucket.com/albums/gg71/marcFX_photo/P2210017-1.jpg)
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Still a yamaha :-*
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Firkos I suspect has had a form over function trim job.
No Marc......I bought the Boyd and Stellings swingarm on my Maico in the early 90's as a shop soiled but NOS item. It'd never been on a bike and it's exactly as it came from the factory...gussetless.
The swingarm on the TM400 has a little bit of extra gusseting but not to the degree of the one on Trade Me.
Note also the lack of gussets on the Yamaha in GMC's magazine post. As far as form over function, most long time vintage racers will know that my old Maico's been through a pretty severe race career with Laurie Alderton, Per Klitland, Pelle Granquist, Kevin Flood, Daryl Lewis and fat old me racing it with that swingarm fitted. I can't say that it's remained perfectly straight in that time, I had to 'untweak' it on the press once but it wasn't bent to the point that the bike was unridable or that I thought it'd need a gusset.
As I wrote in an earlier post, if I ever decided that a gusset was called for I'd stitch weld a 25mm X 25mm angle section underneath the arm with the angle positioned like V so to allow for two butt weld surfaces and a neater appearance. The way US Sport has done it spoils the whole look of the arm and just crys out 'tacky afterthought'.
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Thought that had to be the case , if they sold them like that who was there target market ? the blind institute ::)