single cam vs twin cam - Road Glide Forums
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post #1 of 12 (permalink) Old 09-25-2016, 05:09 PM Thread Starter
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single cam vs twin cam

Hello,

I've read on a few of these threads that the single cam is a big plus. Just curious on what makes it so much better then the twin cam.

thanks

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post #2 of 12 (permalink) Old 09-25-2016, 06:15 PM
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Less friction or resistance and one less shoe to wear out which equals less maintainence. You don't have to worry about cam timing slop either.


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post #3 of 12 (permalink) Old 09-28-2016, 07:25 AM
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HD was touting the twin cam set-up as a better mousetrap vs the single-cam Evo's, in most of the cycle magazines when they were bringing them to market back in 1998-99, using better valvetrain geometry as a selling point.
They also boasted back then, how strong the new crankshaft was......
Gear drives will be available soon for the M8 engines asap.
Scott
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post #4 of 12 (permalink) Old 09-28-2016, 02:01 PM
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I remember when the twin cam was launched, HD was trying real hard to convince riders the the twin cam was soooooo much better. there were a lot of riders that did not like the twin cam. I've owned one evo, one twin cam 88 and one twin cam 103. I don't see any improvement. Granted I am just a regular guy. I don't ride 800,000 miles in a month nor do I rebuild engines on Wednesday evenings. I just ride. I am glad to see the return of the single cam but don't intend to buy a new bike anytime soon.


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post #5 of 12 (permalink) Old 09-28-2016, 02:46 PM
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Gear drives will be available soon for the M8 engines asap.
Scott
I will want to hear one. Gear whine is a concern.
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post #6 of 12 (permalink) Old 09-28-2016, 02:51 PM
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S S use belt and indian too 3 cams WEDGE ENGINE 2 exhaust 1 intake a proven design


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post #7 of 12 (permalink) Old 09-29-2016, 07:10 AM
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I will want to hear one. Gear whine is a concern.
Pan's, Evo's, Shovel's which are single cams are not known for gear whine, and maybe a handful, of all the T/C's gear drives we installed from 2000-2016 have had a very slight whine.
Gear whine with a gear/gear set-up is not a common occurance, at least not here.
Scott
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post #8 of 12 (permalink) Old 09-29-2016, 03:34 PM
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Quote:
Originally Posted by Hillsidecycle.com View Post
HD was touting the twin cam set-up as a better mousetrap vs the single-cam Evo's, in most of the cycle magazines when they were bringing them to market back in 1998-99, using better valvetrain geometry as a selling point.
They also boasted back then, how strong the new crankshaft was......
Gear drives will be available soon for the M8 engines asap.
Scott
Yea, one problem with the one cam evo was the exhaust pushrod/valve angle was too much.
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post #9 of 12 (permalink) Old 09-29-2016, 05:37 PM
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Quote:
Originally Posted by Hillsidecycle.com View Post
HD was touting the twin cam set-up as a better mousetrap vs the single-cam Evo's, in most of the cycle magazines when they were bringing them to market back in 1998-99, using better valvetrain geometry as a selling point.
They also boasted back then, how strong the new crankshaft was......
Gear drives will be available soon for the M8 engines asap.
Scott
Quote:
Originally Posted by Darreldanger View Post
Yea, one problem with the one cam evo was the exhaust pushrod/valve angle was too much.
They went with the single cam so they could introduce a reconfigured twin cam M8 for their next "revolutionary" design.

On another note along the same lines, I could have sworn there was some EPA noise emission thing that had to do with why they don't come with gear cams in the first place. Yes, I know how ridiculous that sounds. I probably read it in some other forum, haha!
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post #10 of 12 (permalink) Old 09-30-2016, 05:41 AM
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Yea, one problem with the one cam evo was the exhaust pushrod/valve angle was too much.
97.653% of all HD engine issues stem from the cam chest area, albeit new, or old.
Scott
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