SNAIL

Etienne · Hoodrider Joined: 25 May 2007 Posts: 2829

Holy fuck!
Robin's the best! Shocked

Brooky · Posted: Wed Sep 17, 2008 1:22 pm Post subject:

Am I right in thinking that the only structural difference between Bratstyle
and standard is that the swingarm is lengthened and it's this that allows
the low seat height? This seems to be the only area that requires any
careful engineering. The rest looks dead straightforward...just take off everything that isn't absolutely necessary to make it go & stop!
Brooky.

Etienne · Hoodrider Joined: 25 May 2007 Posts: 2829

I think the swing arm is original!

Sometimes, the frame is a little bit modified to lower the seat but that's all.
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JoZeF · Grave Digger Joined: 25 May 2007 Posts: 1734

From what I can make out on the bikes on the Bratstyle website it looks like usually, the whole frame is more or less standard (although cleaned up) and the rear shock absorber mounts are cut off and welded lower.

that make the shock absorbers lie a at smaller angle.

Allows you to go lower, but the efficiency of the shocks will be lower too Wink

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"That bumper fits there like sunglasses on pig" Laughing

O.E.

Raid Runner · Snailer Joined: 15 Sep 2008 Posts: 10 Location: australia

The change to the shocks will probably be for the better.
Because the bike has been stripped of weight, the reduced inertia and momentum will mean that the shock might be a bit stiff.
By lowering the top mount, the shock will move less as the swing arm rises, so it will have the desired softer effect.

Bob >>

Brooky · Posted: Fri Sep 19, 2008 1:32 pm Post subject:

Well, from what I can tell, having looked at a photo of a standard SR500
against the Bratstyle bike, most of the lowering of the BIKE has been
done by fitting MUCH shorter rear dampers. You can tell this by looking at the swingarm which is flat on the Bratstyle but angled well down on the standard bike Also, the stand-over or
saddle height, has been changed by bending the tube under the seat
downwards, then cutting the rear upright frame tube to meet it and fitting
the top damper mount at the joint between the two.
The other consequence of these mods is that the rake of the front forks
is effectively increased which will marginally increase the bikes caster
angle (just like lowering a deuche) making it great in a straight line but
making it harder to corner. This will probably only be slight though. By
no means unmanageable. I suspect there might be a bit more work than
is obvious though chaps!
Brooky.

Brooky · Posted: Fri Sep 19, 2008 1:43 pm Post subject:

This picture gives you a good idea of what needs to be altered. A standard SR500 with all its clothes off! Hope I've done it right.
[img]

[/img]
Brooky.

A-K · Posted: Fri Sep 19, 2008 2:46 pm Post subject:

Kich, here the beginning of my !!

type Alma 125cc of 1950

Sveitsimeier · Snailer Joined: 19 Aug 2008 Posts: 3 Location: CH -> FIN

Tervus & a hello to all Snailer's,

I’ve just found that, look the engine.
It’s not mine... I drive KTM Adventur

Patrick

Patrik · Snailer Joined: 14 Apr 2008 Posts: 24 Location: Sweden

Bart · Posted: Thu Sep 25, 2008 9:57 pm Post subject:

Panthershaun · Dropped Joined: 02 Oct 2007 Posts: 247 Location: Kent, UK

Mmmm nice looking bike, interesting front end. also curious about the 4x4.
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In-the-Shed Speed Shop.

Etienne · Hoodrider Joined: 25 May 2007 Posts: 2829

You can see the pics of the great 4x4 A-K's 2CV there :
http://picasaweb.google.com/Astok56/PrPaTeufDeRaid#
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Bart · Posted: Fri Sep 26, 2008 12:50 pm Post subject:

Thank very much for the link Etienne. I'm impressed by the homebuild chassis, however the pictures don't tell anything about the 4x4... Neutral

Patrik · Snailer Joined: 14 Apr 2008 Posts: 24 Location: Sweden

Holy Fuck! Shocked

What a really great job! Laughing

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Chrome, Smoke And Thunderroads