Jaymz wrote:
This should help you establish differences between your current set up and a Plasma Premium.
COMPARISON SPREADSHEET HERE Let me know if you have any questions.
Jaymz, thanks a lot for posting the comparison table! I am about to buy a Scott Plasma TT and have some questions and remarks.
* I guess the formula in cell E21 should be =SUM(E20-B20) iso =SUM(D20-B20)
* The values in cells C28 to E28 for "Bar Centre to Top Tube (mm)" for a Scott Plasma Premium with the rising stem are 23mm. For a Scott Plasma TT with a flat stem, would that value change to -17mm? I read somewhere that the stem of the Plasma Premium has a rise of 40mm.
If I fill your spreadsheet with the two assumptions above, I'll end up with the following table:
Existing Bike Small Medium Large
Reach (mm) 403 390 415 430
Stem Length (mm) 120 75 75 90
Effective Reach 523 465 490 520
Difference to existing bike -58 -33 -3
Standover Height (mm) 764 780 810 840
BB Drop (mm) shown in diag) 67 65 65 65
Difference Sub Total 14 44 74
Bar Centre to Top Tube (mm) 71 -17 -17 -17
As shown in diagram below.
Total Difference in Bar Height -74 -44 -14
Judging these figures, I should go for a Size L, right? I read a quote of Jordan Rapp that the reach of a new frame should be within +-5mm of the ideal position. This would be true for a Size L with my current ideal position (I am 183cm with a 84cm inseam). With a Size L, I would need 10mm of Spacers below the armrests to match my current "Armrest standover height". The only downside I can see on a framesize L is that I would end up having a standover height of +8cm compared to my current frame. On a framesize M, it would be "only" +5cm, I would need 4cm of spacers below the armrests and would need to mount the extensions 3cm more forward.
Any advise from current Scott Plasma owners? Should I go for a size M or L?
One more question: Has anyone managed to put a SM-EW90-A or even SM-EW90-B front junction box into the Scott Plasma TT stem?
Best regards,
Frank