Scorch Cycles, Cape Town, South Africa

120 chain links is the correct answer at the moment but we have the axle pulled all the way back at the moment, that will change once we move the axle forward

hard to measure wheelbase at this stage as we still need to machine new triple clamps which will kick the wheelbase out further, Ducati triple clamps only have 34mm offset on them and we need more, we think, Herman is still working on the final geometry to suit the 17" rims



 
Grant said:
But the front end looks more tucked in to me.
Click to expand...

Tyre/header clearance is marginal on the original, as can be seen by the many dented centre headers.  The 17" may yield a tad more, but yes, it does look closer than stock.  As Red wants to kick the front out a bit, contact issues?

Weight distribution looks like it's definitely biased to the front. 

piet

 
Always handy to get the countershaft as close as possible to the swingarm pivot but I guess that's not going to happen. I wounder what the difference in crank centre height is to std. Or if there is a rising rate or linear shock setup.
 
I had considered going wider rear tyre on my 17"s on the SF, but decided a 150/70 is ideal on a 4.25" rim, plenty enough and saves me a huge amount of grief.

Red, you obviously need more clearance on these race bikes, and my idea was to move the engine about 10mm to the right. Obviously alters RH cornering clearance, but on a twin that's not a major issue (yes, I have touched the gearbox cover on the track, but that can easily be bevelled or set up closer inboard). Centre-weight-bias can be fiddled.

As a solution, it keeps the gearbox stress level as per an original setup and only requires milling off engine mounting lugs on the right and adding eq spacers (or weld/drill/mill) on the left.

Another idea (a lot more complicated) involves making a new, longer 5th gear output shaft, adding material to the cases and fitting a double-row (roller?) output bearing setup (somehow?  ::)). Then maybe the selector case proximity becomes an issue?? Certainly less work than carbon fibre or billet cases !!!  ??? ??? ???
 
Vince, crank centre height is higher than standard
PB2, Zane rear rim is 5" hence the need to juggle a 160 tyre in there somehow

will be starting to program the new triple clamps this coming week, final dimensions are sorted out
need custom clamps to obtain the rake and trial measurements that we wish to run with
rolling chassis leaving here this morning to go and get everything measured to make sure alignment is correct before we finalize the sprocket alignments

photo of two days worth of Paul's new found skills, being taught to make plugs by Matt, fellow 81 Jota owner
starting to take shape

 
went out and did a track day on Sunday with both bikes and now they are spread all over Facebutt so may as well post some shots here
couple of the bikes nearing completion

bikes are fairly well identical except black engine is next stage of tune and so could say is still work in progress
hurt it on Sunday, been working flat out getting it repaired





 
and two shots of them dressed

many thanks to Herman at Scorch Cycles for the frames, they work fantastic, bikes are light (177kgs) and steer and handle brilliantly





 
I said I liked the orange one but now I'm not so sure. That Black is a ripper. Lovely lovely work Red.
 
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