Japan Meets Britain

Vince Lupo · Post by **Vince Lupo** » Fri Mar 18, 2011 12:35 pm

Just came back from the road testing, and I think we're done. Unlike the last time, with temperatures in the 40's, today was in the low 70's, and I'm sure played a role in the final jetting numbers.

We ended up with 240 mains, and lowered the needles to the middle position, and it runs smooth as silk. I could redline it in every gear except 5th (2nd gear at redline was almost 60mph). As well, we had the 32 rear sprocket on there, and I think we're going to put the 30 on instead and be done with it.
The bike now seems to ride like a 550, though John told me that it sounded more like his 750 Triumph as I tore out of his place on one of the runs.

The top speed actually dropped to about 95mph from the 105mph on the colder day, so this is probably about as good as we're going to get. Doesn't really matter too much, as I normally never ride at that kind of speed.

So besides putting the 30 tooth rear sprocket on, the only things left to do is the powder coating, and putting the new tank back on. Hopefully all that should be done by the end of next week.

jensen · Post by **jensen** » Fri Mar 18, 2011 12:56 pm

Hi,

Here you go Vince :

Vince Lupo · Post by **Vince Lupo** » Fri Mar 18, 2011 1:05 pm

Hmm - that's very interesting. Seems that it's doing what it's supposed to do!

From a 'seat of the pants' perspective, the bike now pulls like never before -- like, you better hang on or it's gonna throw you off the back!

Jensen, if you do end up coming to the U.S for a visit, you'll definitely have to take it for a spin.

FAST FRED · Post by **FAST FRED** » Fri Mar 18, 2011 1:37 pm

Vince, here on the west coast we have a speed advantage. I have a seceret test road near Coloma that is good for 5-10mph, it's long straight and steep about a 4% grade down hill. I used this road back in the day when I had a CBX and loved to go fast.

Fast Fred

jensen · Post by **jensen** » Fri Mar 18, 2011 1:54 pm

Hi,

Am I lucky to live near Germany. Today I came back from Keulen (one day job visit), the last 60 miles from Oberhausen to the border at Arnhem, flat out, all the way. Almost no cars, nice weather, and clear sky.

Now I know that an XRV750 does 185 km / hr (Garmin, because the speedo shows 200 +), if you wait long enough.

Jensen

Vince Lupo · Post by **Vince Lupo** » Sat Mar 19, 2011 4:01 am

So is it to be expected that the bike would hit a higher top speed in cooler weather than in warmer weather? How does the air temperature play a role in the bike's performance and responsiveness?

jensen · Post by **jensen** » Sat Mar 19, 2011 4:18 am

Hi Vince,

It depends, but it ain't no two stroke.
I did not catch how you broke in the new pistons.

But doing full throttle so soon(?) ain't a reliable measurement either,

Jensen

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Japan Meets Britain

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