On board 750

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I'm very envious gortnipper if that image is your playground. Wow!! :cool:
 
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Schwany said:
Plenty of cars too. You have a specific favorite road suggestion by any chance?
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I left 18 years ago, so dont know much now. I used to like going up over Hwy 20 and down back and around to 2 for a long ride.

Had friends up Chuckanut drive. Used to go over to Vashon from when I lived in W. Seattle. And lots of time out Woodinville way up into the foothills when I used to live out there a couple years.
 
gortnipper said:
I left 18 years ago, so dont know much now. I used to like going up over Hwy 20 and down back and around to 2 for a long ride.

Had friends up Chuckanut drive. Used to go over to Vashon from when I lived in W. Seattle. And lots of time out Woodinville way up into the foothills when I used to live out there a couple years.
Click to expand...
I knew you had moved to a nicer part of the world, but I had a feeling you hadn't ridden in Washington state recently. The population growth has put a damper on spirited motorcycle riding. Roads and scenery are still nice, but cars and gravel trucks have lowered the riding pace considerably. I've noticed a change going over the 20-2-90 passes in the short 8 years we've been here. There are still some good roads, but they are a long way from Seattle on a P11. Might have to start trailering it to a starting location that is closer to the good riding. Like one has to do riding a dirt bike, but on the street. ;)
 
This thread became interesting when discussing the powerband. The powerband on my 750 is just under 6000 RPM. I went back to look at the rest of the movie that was available from my 60 mile ride last week. In particular I wanted to see what kind of rev range and speed I normally ride at on an open road. Its not something I think about normally. I just ride it. I ride between 5,500 RPM and 6,500 RPM. Usually under 6000. At 6000 I am doing 90, so it has to be a wide open road with no cops for that kind of riding. Luckily that kind of road exists near me and its great for testing bikes. Anyway I did another capture to show how nice this bike rides at around 6000 /90MPH. Its super smooth, handles brilliantly with those IKON shocks. Stops well and sounds great. Very happy with how it turned out.

This is how it was when I got it:
1.jpg


Here is more of the movie (extended version). Riding between 5,500 and 6,500 RPM. Doing 80 - 90 MPM
(sorry about the first part which is a repeat of the other movie - there are some corners at the end lol)

 
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mean gene said:
Great pics. Don't try this back east!! Soooo wasn't there a green bike also?
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Yes, the green one is an 850 MK3. Its in the process of becoming an interstate at the moment and it will be black/ gold. I dont usually ride the 750 on those kinds of roads. I prefer to ride it in the mountains to the west here. Since the 850 was in bits last weekend that was the only available Norton to ride. I definitely ride my 850 most of the time and its my go to bike. 750 is fun on any kind of road, but twisties best.
 
Jerry, in post 21 you mention that the cam is a Webcam 312 and then in post 24 that it is a 312A.
Do you recall which profile it is?

Glen
 
So close to the ton...

Most of the roads around my house (including the road I live on) look pretty much exactly like this (not my pic, the earlier one I posted is on the S. Island), I am 30 min out of Auckland mostly on the motorway, and within 15min from my house I am fully in the country.

On board 750


Since these are 100kph (62mph) roads, most of my riding is in 3rd gear, 4500-6500 rpm. That is where the power is. Sometimes second, sometimes fourth - but third in the twisty 100kph sections. If I am pushing it chasing a Ducati or something, I sometimes hit red line. That is where I forget, since I also have a Duc and they rev really high.

@Jerry Doe did you raise the CR? JC told me that the 312A with the radiused lifters likes 9.5:1
 
Thanks Jerry.
One other thing- apologies I am a numbers person-
According to the big white Norton book 6000 rpm with a 21 tooth = 102 mph.
Your speedo could be reading low or the tach high.
Might be worth clamping a GPS on there:)!
On edit- I see that you have a CNW belt drive, that might change the ratio from stock?

Glen
 
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worntorn said:
Thanks Jerry.
One other thing- apologies I am a numbers person-
According to the big white Norton book 6000 rpm with a 21 tooth = 102 mph.
Your speedo could be reading low or the tach high.
Might be worth clamping a GPS on there:)!

Glen
Click to expand...
Maybe with a skinny 22 yo, tucked down on the tank...
 
worntorn said:
Thanks Jerry.
One other thing- apologies I am a numbers person-
According to the big white Norton book 6000 rpm with a 21 tooth = 102 mph.
Your speedo could be reading low or the tach high.
Might be worth clamping a GPS on there:)!
On edit- I see that you have a CNW belt drive, that might change the ratio from stock?

Glen
Click to expand...
Yes it might be an idea to clamp a gps on. It feels about right though. With the cNw belt drive it alters it a bit. The bottom line is it is a 19 inch rim with analog speedo. I think it’s accurate and the electronic tacho is for sure. At 6000 when I look down it’s around 90.
 
gortnipper said:
So close to the ton...

Most of the roads around my house (including the road I live on) look pretty much exactly like this (not my pic, the earlier one I posted is on the S. Island), I am 30 min out of Auckland mostly on the motorway, and within 15min from my house I am fully in the country.

On board 750


Since these are 100kph (62mph) roads, most of my riding is in 3rd gear, 4500-6500 rpm. That is where the power is. Sometimes second, sometimes fourth - but third in the twisty 100kph sections. If I am pushing it chasing a Ducati or something, I sometimes hit red line. That is where I forget, since I also have a Duc and they rev really high.

@Jerry Doe did you raise the CR? JC told me that the 312A with the radiused lifters likes 9.5:1
Click to expand...
You certainly live in a beautiful part of the world. I will be in NZ in a few months, but will be in South Island the whole time. My mum lives there and she is 83. I was supposed to be there for her 80th, but Covid messed that up.

I am not sure what else Jim did to the head. Jim? I know it’s got bigger valves, ported etc. I think a lot more was done. Probably skimmed a little bit. I have a base gasket and carbon head gasket. I expect it’s around 9:1 just guessing.
 
gortnipper said:
Maybe with a skinny 22 yo, tucked down on the tank...
Click to expand...
Skinny or fat shouldn't matter , 6 grand on the engine gets you 102 with a 21 tooth. :)
I looked up the ratio on the CNW and it is essentially identical to the stock chain primary
 
worntorn said:
Skinny or fat shouldn't matter , 6 grand on the engine gets you 102 with a 21 tooth. :)
I looked up the ratio on the CNW and it is essentially identical to the stock chain primary
Click to expand...
Do you think it could be off because the Avon road rider tire height? I will see about a gps check sometime…
 
Jerry Doe said:
You certainly live in a beautiful part of the world. I will be in NZ in a few months, but will be in South Island the whole time. My mum lives there and she is 83. I was supposed to be there for her 80th, but Covid messed that up.

I am not sure what else Jim did to the head. Jim? I know it’s got bigger valves, ported etc. I think a lot more was done. Probably skimmed a little bit. I have a base gasket and carbon head gasket. I expect it’s around 9:1 just guessing.
Click to expand...
Where on the SI?

I put HC pistons in mine to get that. Stock head gasket, no skimming on the head.
 
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