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  #11  
Old 19th September 2020
Randy_rots Randy_rots is offline
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Wait... Are you telling us that you have changed your SE.497 to Andrews N4???
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  #12  
Old 19th September 2020
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Basically just changed cam timing and nothing else
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  #13  
Old 19th September 2020
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Years ago, I was at a Buell event up in Wisconsin, with lots of factory folks. One of whom was someone who worked in the HD "Product Development Center" (PDC) and was heavily involved in the motor programs. He told me point blank that the SE .497 grind and the N4's are the same cams, despite the minor differences in specs, which he attributed to being spec'ed at different rocker ratios.
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  #14  
Old 19th September 2020
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Quote:
Originally Posted by rocketmangb View Post
Basically just changed cam timing and nothing else
Possibly but looking at the numbers I'm going quicker than you
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  #15  
Old 20th September 2020
Randy_rots Randy_rots is offline
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Quote:
Originally Posted by aswracing View Post
Years ago, I was at a Buell event up in Wisconsin, with lots of factory folks. One of whom was someone who worked in the HD "Product Development Center" (PDC) and was heavily involved in the motor programs. He told me point blank that the SE .497 grind and the N4's are the same cams, despite the minor differences in specs, which he attributed to being spec'ed at different rocker ratios.
This is exactly I was trying to point out... They are the same cams.
Although they can vary from set to set timing wise.
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  #16  
Old 20th September 2020
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Originally Posted by gusm2 View Post


Possibly but looking at the numbers I'm going quicker than you
True

Whats your bike weigh ?
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  #17  
Old 20th September 2020
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60Gunner 60Gunner is offline
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Quote:
Originally Posted by gusm2 View Post
Update, I fitted Andrews N4s and initially was disappointed with the dyno figures as my rwhp was down from 94 to 89 but the torque was up from 83 to 89, I also shed almost 10lbs by fitting a lithium battery, got hold of a pair of standard 1200 jugs and had them rebored to suit my +30" pistons, I lost15lbs myself during the drags closed due to Covid season.
It's now doing 1.5 60 foot times and down to 10.93.
I'm quite pleased with it........... nitrous next ��
Just moved the power band to the left is all.
More midrange power, less top end. Good for a street bike.

Anyone know how much gearing changes affect torque? Specifically imput (primary) sprocket.

Last edited by 60Gunner; 20th September 2020 at 20:38..
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  #18  
Old 2 Weeks Ago
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Lots of different opinions between here and Badweb, I went with the recommendation of Andrews themselves and as mentioned earlier it seemed to give positive results, I've invested in a Dyna 2000 ignition module now also, let's see what next year brings.
Ps I still haven't weighed it ��
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  #19  
Old 2 Weeks Ago
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Lot less than my Rubbermount
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