gear drive cam selection help
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Road Captain
Joined: May 2006
Posts: 720
Likes: 2
From: Kansas
gear drive cam selection help
Hey all, I'm getting ready to tear into my RK, I would like your input/opinion on what cams you have or would use, bike is an '06 Roadking, carb, 95" build w/flat top pistons, Ness big sucker, Fulsac mod. slipon mufflers, mostly 2 up touring, I'm not looking for a hotrod to peg the dyno, just low-end/mid range passing power, but not too much as to avoid changing the cheap crank bearings. this bike will likely never see 5k rpm... just 70-80 mph all day long.
Thanks for your help,
Kevin.
Thanks for your help,
Kevin.
Grand HDF Member
Joined: Feb 2005
Posts: 4,307
Likes: 9,428
From: Twin Cities Minnesota
RE: gear drive cam selection help
I tried the 37g and could not get the pinging out with out de-tuning to the point of "why bother putting in perfomance cam".
Go with the Andrews 26g with your combo you'll be happier. If you want more power the 31g is a good choice.
Go with the Andrews 26g with your combo you'll be happier. If you want more power the 31g is a good choice.
Road Master
Joined: Apr 2006
Posts: 892
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From:
RE: gear drive cam selection help
I'm after the same sort of ride you describe kansas & TOMCENTRAL on this forum was instrumental in helping me choose my cam. Heck of a nice fella w/loads of experience w/these builds, he even gave me contacts on where to get everything. I have a cam gear set-up w/Andrews 26G's on the way (was looking for it today [:@]). As soon as I get the kit & some SE adj pushrods in hand I'll set up a slot w/the local shop. It's busy season for the shop, but I hope to get em put in & dyno-tweeked in a week or so. I'll know more then.
Good luck & I hope you get exactly the ride you're looking for. ...actually I hope we both do.
Good luck & I hope you get exactly the ride you're looking for. ...actually I hope we both do.
Banned
Joined: Mar 2006
Posts: 8,603
Likes: 10
RE: gear drive cam selection help
ORIGINAL: jeepster09
I tried the 37g and could not get the pinging out with out de-tuning to the point of "why bother putting in perfomance cam".
Go with the Andrews 26g with your combo you'll be happier. If you want more power the 31g is a good choice.
I tried the 37g and could not get the pinging out with out de-tuning to the point of "why bother putting in perfomance cam".
Go with the Andrews 26g with your combo you'll be happier. If you want more power the 31g is a good choice.
what was your compression ratio...37's like less than 10
Grand HDF Member
Joined: Feb 2005
Posts: 4,307
Likes: 9,428
From: Twin Cities Minnesota
RE: gear drive cam selection help
9 3/4 TO 1
For my combo the 31G works best. If 2 up touring etc was primary function I would go with 26g.
For my combo the 31G works best. If 2 up touring etc was primary function I would go with 26g.
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Ultimate HDF Member
Joined: Feb 2006
Posts: 5,939
Likes: 3
From: TX
RE: gear drive cam selection help
I have 37G's (in Texas) w/9.7:1 CR w/o any detination issues.... Gave me 100/100 & it comes on early ~ over 90ft/lbs @ 2200, 95ft/lbs @ 2500 & stays up all the way to 5700. Sure rides good too!
The 26's are AWESOME cams too. I have used them and 55's, but the 55's require more compression than I care for & as a result are tuff on starters. YES, I had compression releases too....
Properly tuned, 37's are fine. Andrews will tell you not to go over 9.5:1, but BigBoyz convinced me that 9.7:1 was still OK. They were right!
The 26's are AWESOME cams too. I have used them and 55's, but the 55's require more compression than I care for & as a result are tuff on starters. YES, I had compression releases too....
Properly tuned, 37's are fine. Andrews will tell you not to go over 9.5:1, but BigBoyz convinced me that 9.7:1 was still OK. They were right!
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Ultimate HDF Member
Joined: Feb 2006
Posts: 5,939
Likes: 3
From: TX
RE: gear drive cam selection help
ORIGINAL: turbo54
Winter project but im going with a kit with 510 cams. I here it's not to radical for a bagger.
Winter project but im going with a kit with 510 cams. I here it's not to radical for a bagger.
Also, like the 37's.... do not exceed 9.7:1 compression ratio!