Quote:
Originally Posted by D.O.G.
I fitted a vacuum gauge to my VT250C using a similar barb fitting.
I found the gauge needle bounced around too much to be read (because it's only picking up one cylinder I suppose).
Adding a flow controller (one way) to the line steadied the needle, but it probably messed with it's accuracy.
As far as usability goes, I found little difference between part throttle and WOT in normal riding, so it didn't really help.
Maybe the CBR's higher revs will help? With it's modified gearing, my VT (probably) seldom goes over 7500 rpm (no tacho).
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I forgot about the flow restriction! My carb sync set already had included restrictors, I’ll have to figure out as way to restrict this one, maybe just a zip tie constricting the line?
Maybe the lack of excess power on your VT had something to do with the small changes in needle movement? Actually, my CBR only has 5 more horsepower, so maybe not. I will find out soon enough!
Also, there is an entry for a 1988 VT250C on gearingcommander.com, punch in your shift point mph and find out your rpms!