teazer said:
What is your target? For a drag motor maybe 40 to 44.
the Bultaco Bandido made 42 bhp so that is maybe 35 whp? And at 7500 rpms the piston speed was only 3175 ft./min.
Cycle World has the Bandido at 8.23 seconds in the 1/8th mile at around 80 mph. So I would think 40-44 whp would be a good goal.
The only differences I can find between the Bandido and the Montadero is the expansion chamber, ignition timing, and the weight of the flywheel. Everything else seems to be the same.
“ I am beginning to believe the engine is ancillary to the Pipe” ~from the Man Down Under. So does BB with his titanium expansion chambers that our friend is welding up.
The problem with my head is the single spark plug and cooling. Zeke’s has twin plugs. Cycle world said that the reason why Bultaco went to two plugs is to help cool the head by increasing flame propagation.
The man from down under had the same problem with heat in his Pursang build and he went to a Husky Head and that took care of the detonation problem.
We pegged the Teazer tach plus 15000 Rpms yesterday (7500 Rpms )actually and the bike didn’t mind it at all. Of course it really didn’t help the HP at all.
The Chinese CRF magneto will take care of the flywheel weight. I would like to get Bandido pipe for testing. I wonder if that was built using Jennings data? I have just started looking at Blair. So much to learn.
I will be reacting on the third Yellow...so will Zeke.
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