Hi All!

I've had a problem with my left front wheel cycle wing. The stand broke during a cruise and the wing flew towards the passenger but hit nothing in the end. I'm looking to replace these stands with something better, bolted instead of welded. My idea is to buy new stands and wings and have the bits delivered to Spain. In order to better explain the supplier of these bits what I need, it would be great if could help a bit with vocabulary (English name for a few things) and explain what I have there a bit.

I've attached 3 pics:
-The first one shows the way these custom stands are attached to the Sierra thing.
-The second one shows a general assembly.
-In the last one, I've marked the areas I would need help with (explanation below).

-I think that What I've marked in blue is original Sierra, am I right? I don't know the name for all that, I better not call it "thing" or I'll induce confusion (I'll need the new stands to be compatible with this.)

-What I 've marked in yellow is what I've been calling "stand". How do you call it? Cycle wing stand, cycle wing support?

-I've put one arrow pointing towards the breaking point of this stand.

-I've put another arrow pointing to the Sierra (supposedly) bit where the stand is welded to (as seen in the first picture), in case this particular bit has a specific name I'd like very much to know it.

Lastly, is what I'm looking for common? Bolting instead of welding? I think I've seen it before but I'm not too sure. Is my Sierra thing common? Who can I contact for bits? As Stuart Taylor welds instead of bolting, I was thinking Mac #1, MK Sportscars.. ideas?

Thank you very much.

Rescued attachment left wheel 1.jpg

Rescued attachment left wheel 2.jpg

Rescued attachment left wheel 2 drawings.JPG

No one speaks English in this forums!!

Alex,

We were all shocked by the huge size of your pictures!

The bit in blue = front upright
The yellow bit = most people call them 'brackets'

Yours looks like a classic stress fracture - there is a point where the two parts are welded together that acts as a 'stress raiser'. All the vibrations make the thinner arm flex around that point, leading to a tiny crack that gets bigger and bigger until it breaks.

Other people with Sierra uprights have made better designs with a smooth transition between the pieces - maybe someone will point you in the right direction. Anyone?

David

The one's MK make are better as they do not concentrate heating in one area only and do not rely on only the weld.

Hopefully this webpage will show you more... we also annealled the metal prior to bending it reducing the chance of stress fractures...

CLICKETY CLICK

As Hellfire says take a look at the std MK or Mac#1 brackets. You may find these are a direct replacement and i would guess would be in stock.
I seem to remember MNR did some development on theirs as well.

quote:

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We were all shocked by the huge size of your pictures!

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Hellfire, congratulations for both car and website, they're both awesome. Plastic coated brackets, wow.

[Edited on 6/4/06 by Alez]

This will mean that you will need to replace both sides (nothing read about it).

Also for the rest maybe its an idea to attach them with a small chain or cable?

Think it should really hurt cathing the cycle wing with your head when going 70Mph..

on the other end if it donīt brakes you donīt have to attach it.

do they often break??

Tks

Mark's reply to an email I sent him yesterday:

quote:

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[...]Unfortunately our uprights and wings only fit the 15" wheels and tyres, however we are just having a 13" mould made, but this is a slow process and it'll be another month before its ready. the brackets will be made to fit the wings and they are the bolt on type.

I have used the 15" wings and brackets on our new Type 9r Worx with 13" wheels and 185 tyres, but they just don't fit as I would like them, which is why we're having the new moulds done[...]

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quote:

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I'll see if I can get things moving a bit quicker and I'll drop you an e-mail when we have progress.

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That looks like they are welded to the top adaptor. You'll have to cut the old ones off and get some that fit to the clamp bolt.

I think I can spare some time (in the following month) to go to the scrapper for an unmodified pair of top adaptors and so have them ready for when Mark has something for me

Cheers,

Alex

The Mac#1 brackets are bolt on. Bottom bit bolts where the bottom ball joint fastens on. Top bit with the bolt that secures the mushroom adaptor. very nicely made. No problems with mine.

The version i got had a short stub onto which i had to bolt the top strap in place. Later versions have a longer strap which is simply bent over to desired position. Ive never heard of either type snapping in the way that others sometimes do.

13" wings sound like the way to go. Nice idea. I can vouch for the top service.

Cheers, Darren

I don't think you'll find any in the scrapyard Alex, they are specially made to adapt Sierra front uprights from strut to wishbone. Get the grinder round them and cut the weld.