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Sportster Motorcycle - Bottom End Cams, Cases, Gears, Flywheel, Piston Conecting Rods, Oil Pump, etc...

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  #11  
Old 5th July 2006
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Narley Narley is offline
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Quote:
Originally Posted by stevo
OK... just had a look..


the part numbers on the wheels are casting part numbers....


the casting part number for both 5 speed wheels is the same as the right side of 4 speeds

BUT it's an A number which means an update of the origional number.... which in this case is a different machining of the same casting/forging...

4 speed and 5 speed aren't interchangeable...... different length outputs on the primary side...


Kerry ... not sure on the key/slot thing ... all the 5 speed sporties I can recall have been keyed and I just put a set of S&S Supreme rods on a set of 94 wheels and put 'em in a 2000 model with a post 2000 pinion gear and E grind cams.
Just figuring this out now. the s&s flywheel set up is designed after the old pinion shaft I was told. I have broken the pinion shaft key and chewed up my redshift 643 cams in the process. Remeber that break i was tlking about that could be a problem this season. well it happened. So i have ordered the new wheels and shafts and rods from s&s and decided to get new cases from them to lessen the chance of future problems. I was shown a set of older wheels and the pinion and shaft were keyed to fit together ..not the single little iron key that my 02 was using but several meshing notches...looked way stronger.
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  #12  
Old 5th July 2006
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Pics of pinion shafts. Splined is a 87, keyed is a 89. I have seen keys fail when used with agressive cams. That is why S&S uses the older splined shaft. On the lightweight S&S bottom in my motor I was able to use stock 87 pinion and oil pump gears. The motor co, in their infinate wisdom decided to make it weaker to save some $$$.
Ted
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Last edited by ted; 22nd June 2007 at 14:05..
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  #13  
Old 5th July 2006
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I am sorry you did not like my response but looking up part numbers is not a simple 1 or 2 minute deal.

You would not believe how many people expect me to give them free advice and recommendations only for them to turn around and buy the parts off of the internet.

I cannot compete on price with internet warehouses. The only thing I have is our knowledge and expertise to set us apart from them. If I give that away for free how do you expect us to stay in business?

If you had been an established customer I would have been more than happy to assist you.
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  #14  
Old 5th July 2006
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Beauty pics...they say a thousand words. the meat of the keyed system had me shaking my head. That splined shaft looks good .
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  #15  
Old 5th July 2006
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Dan,
I figured that with the expertice at NRHS the answer would be right at the tip of the tounge. 4 speed cranks dont work in 5 speeds due to the alternator change. I have raced and wrenched on 4 speed Sportys. I put the present motor together myself. I know 4 speeds, but not 5 speeds. I was looking at helping a guy out that need a flywheel assy. I was not going to sell the guy something that would not work. So, I went to the experts. Maybe we all learned something here. I can't imagine that you didn't know the answer though.
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  #16  
Old 6th July 2006
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The guy is looking at S&S for a new crank now. Can't go wrong there. I suggested he look into the lightweight race wheels. I sure like mine. ;-)
Thanks again for all the help guys.
Ted
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