1981 GS750E (GSX750E) Rat Cafe Racer

teazer

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Nice looking forks. what is the measurement from center of the axle to top (or bottom) of the upper triple clamp and what is that same measurement on the stock forks?

And what is the overall diameter of the wheel and tire you plan on using and same dimension for the stock wheel?

It's important to NOT drop the front end too far and run out of cornering clearance or rake and trail (stability).
 

LKS

Been Around the Block
As you can see in the previous post I've used some high level CAD (Cardboard Aided Design) to visualize the placement of the fender. The fender is an aftermarket fender for the ducati Monster, and originally looks like this:
Ducati Monster fender by Lars Krogh-Stea, on Flickr

Since I'm using the 19" wheel (and because I think the original design looks backwards), I'm going for somthing like this:
616aaaa0930fe1857a1c9cc4ec933ca9 by Lars Krogh-Stea, on Flickr
 

LKS

Been Around the Block
Nice looking forks. what is the measurement from center of the axle to top (or bottom) of the upper triple clamp and what is that same measurement on the stock forks?

And what is the overall diameter of the wheel and tire you plan on using and same dimension for the stock wheel?

It's important to NOT drop the front end too far and run out of cornering clearance or rake and trail (stability).
I dont't have the exact measurements, but if you look at the black tape on the one fork; the new tyre stops at the top of the tape. The forks have 120mm of total travel, but you use probably 80mm so theres lots of room. The triple offset is about the same, but you loose about 25mm of offset from switching away from leading axle. This adds to the trail, but some of this is lost because of steeper steering head angle. If I still have too much trail, I'll see if i can compensate by rasing the rear.
 

LKS

Been Around the Block
I don't know if this makes sense to you, but I wanted to see if I could fit the Motoscope mini into the GSXR-triple. When I bought the Mini, the plan was to use the original front. Then the new triple would have looked like this:
1ce10b547c10b4652240c67235888d93 by Lars Krogh-Stea, on Flickr

There isn't room to place the Mini in the center of the Gixxer triple, but there is room for it on the opposite side from the gear indicator. I've cut a piece of paper the same size as the Mini, put it on the backside of the triple to position it between the support ridges. Then I've flipped the picture and layered it with opacity on top of the other picture.. Like this:

Backside:
Triple by Lars Krogh-Stea, on Flickr

Frontside:
mini by Lars Krogh-Stea, on Flickr

It doesn't look as cool as when it's mounted in the center, but until I have access to a cnc router again it must be good enough..
I think it would look better with the instrument lights under the Mini.
Not sure of how I want to do this, so I'm open for suggestions :)
 

cb250nproject

If you can make it better do so
It’s a difficult one as you don’t want to cut out any of the supporting pieces.


Sent from my iPhone using DO THE TON
 

LKS

Been Around the Block
Did a quick photoshop of what the triple would look like with the Mini and lights. I first did some sanding on the triple to brake up the shapes and to match the "design" with the tank and tail. I think I'll go with this.

Top Triple by Lars Krogh-Stea, on Flickr
 

LKS

Been Around the Block
Thought the Cognito Moto design of the indocator lights were much prettier than the big lights I used the last time. Drilled holes for 3mm 3V Leds, countersunk the holes 2mm and tested. Pretty satisfied. I did a test at a spot where I'm gonna remove material for the Mini anyway, just in case, but as I'm going with the design I'll position the holes below the Mini. Like in the picture I photoshopped. Here's a video I did to show the visibility of the LED (and some cheesy mobile editing ;) )

 

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