Hi guys. I am currently running 28 Bravos, one worked by Croxton the other by Matt Lahti on a bone stock 250XB/Gambler 2200.
I am in the process of doing the upper/lower cowl mod, 63cc heads (promax specs), and 300 promax ECU.
For those of you who have done these mods, did you change your prop/setup after the mods and if so which props ran best for you guys?
I wouldn't think you would need to change props. Just have them tweaked.
"Better to remain silent and be thought a fool than to speak out and remove all doubt."
Not exactly what your doing but I went from a 250 xb to a 300x on a 2100 before. I was running a 28 bravo xs stock on my 250. I went to a 26 bravo xs for a fishing/load prop when I put the 300x on. However it had 1:62 gears and a higher limiter by a few 100 rpm so I had to go down in pitch. Assuming you are staying with your same gear set I wouldn't THINK you still couldn't run that 28 with success.
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