There once was an ugly duckling - The tale of D468ABL

100mm was done for the extra suspension travel for the desert racers under extreme conditions,not to balance anything out. 50mm is plenty,tbh, and if you've seen Syco's bike with 100mm,you need a ladder to get onto it. Talk to Richie Moore, he's done the maths on these things.:thumb2
 
Shurv said:
100mm was done for the extra suspension travel for the desert racers under extreme conditions,not to balance anything out. 50mm is plenty,tbh, and if you've seen Syco's bike with 100mm,you need a ladder to get onto it. Talk to Richie Moore, he's done the maths on these things.:thumb2
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Getting on Sycos bike ain't the problem. Finding a high kerb everytime you stop is, lol

Camille has a 35 inch seat height iirc

Even Si had to take a little padding out of the seat and he's 6ft +
 
Changing the forks and triple clamps seems to mean that you end up with a reduced offset on the triple clamps and therefore more trail than the original G/S or GS. More trail makes the bike more stable but slower steering - good for high speed desert racer and probably on the road.

Lengthening the monolver increases the wheelbase and has much the same effect as increasing the trail. If you do both I would have thought you'd end up with a bike that is a bit of a mule off road.

As a matter of interest there is a thread on ADVrider which describes how to increase the travel on a standard length monolever without causing any real problems with UJ life. post 18 onwards.

Another interesting thread showing a homemade jig for extending the monolever - this guy adds 125mm!
 
Center of gravity gets higher which compensates a bit for the other modifications.

Does anyone know the travel for the rear suspension on Moorespeed's bike with 50mm and 100mm extensions?
The swing-arm is pretty vertical so I would guess that the difference in height is not huge, not more then you can shave of your seat.
 
Flipfly said:
Getting on Sycos bike ain't the problem. Finding a high kerb everytime you stop is, lol

Camille has a 35 inch seat height iirc

Even Si had to take a little padding out of the seat and he's 6ft +
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That's a nice little bike, that. Fits me a treat.... :augie
 
AliBaba said:
Edit: The swingarm is pretty horizontal, not vertical.
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The standard g/s angle from horizontal is 21. Extending the swinging arm by 100mm therefore raises the bike by 36mm

(these are unloaded figures)


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Looks like shurvs' bike is about 30 degrees, which with a 50mm extension will raise the bike by 76mm. Again this is pretty much "unloaded" as there's no engive, tank etc on the bike.

Shurves bike looks like it uses the standard g/s top mounting point and moves the lower mounting point as far as possible to get the longest shock absorber possible, which gives most controlability. This is the best route and shows the thought that has gone into perfecting everything, but means as shurv says you have to have the shock built specially to requirements. No cheap fleabay purchace like on mine :)
 
pete.keys said:
The standard g/s angle from horizontal is 21. Extending the swinging arm by 100mm therefore raises the bike by 36mm

(these are unloaded figures)
Click to expand...

If you use the same shock and the same mounting-points that's right.
If you calculate 30% sag the angle will be less, if we say that the angle becomes 10° the difference is reduced by approx 50% (18mm). At 0° there will obviously be no difference.


pete.keys said:
Shurves bike looks like it uses the standard g/s top mounting point and moves the lower mounting point as far as possible to get the longest shock absorber possible, which gives most controlability. This is the best route and shows the thought that has gone into perfecting everything, but means as shurv says you have to have the shock built specially to requirements. No cheap fleabay purchace like on mine :)
Click to expand...

On the other hand it's design-criteria to make the shock as short as possible.
 
pete.keys said:
The standard g/s angle from horizontal is 21. Extending the swinging arm by 100mm therefore raises the bike by 36mm

(these are unloaded figures)


Looks like shurvs' bike is about 30 degrees, which with a 50mm extension will raise the bike by 76mm. Again this is pretty much "unloaded" as there's no engive, tank etc on the bike.
Click to expand...
I think you need a new battery in your calculator:rob
 
Looks stunning so far.

Hurry up and finish it so we can see the result !!


:D
 
I've got the 1st week in December off work and am planning to get it pretty well finished then,but will post pics of the final build.A few bits of fabrication to do yet.:D
 
Latest update, I'm still waiting for Richie Moore to get a slot to make the exhaust and a couple of other pieces of fabrication needed. In the meantime I've fitted the beautifully re built carbs ( dipped, blasted, all new innards and and good scrub up) and also fitted the lovely Migstand. I prefer a sidestand as due to a car crash in 1992, my wrists and hands don't function quite as they should and I struggle to get a laden bike onto a centre stand.The OE comedy sidestands are hopeless, so an adjustable Migstand was the only way to go.It's beatifully made and has two modes, spring back ( like Ducati's) or manual, I've gone for manual. I've reconciled myself to the fact that the bike will only be ready for spring and I've already started an Alps trip planner for June.Tine to give it a good thrashing.
 

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