Please chime in on my engine build set up
HDF Community Team
Joined: Jun 2006
Posts: 12,778
Likes: 2,608
From: san antonio
A comparison of the SE255 and TTS100 specs is attached; can't find the specs for the TTS150. The best way to decide between the two cams would be to find dyno charts of Stage I, cam only upgraded motors. The variable will be the exhaust and both these cam sets are exhaust sensitive. Have seen several TTS100 charts of Stage I motors and see the peak TQ vary between 108 and 115, some charts show a dip early in the curve which is usually a characteristic of the exhaust.
I don't think you can go wrong with either cam but might see less peak torque with the 54 but more torque under the curve and a flatter torque line but that is JMHO.
I don't think you can go wrong with either cam but might see less peak torque with the 54 but more torque under the curve and a flatter torque line but that is JMHO.
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
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From: SoCal
If you get caught up in shopping for cams based on specs you'll drive yourself crazy. The TTS 100 runs harder than a 255 no matter what the specs say. There is less than a handful of people on this forum that are qualified to design a cam, unless they are already doing that job, LOL. Not sure what the design goals for the tts 150 that steve had in mind. Bigger stock motors, modded 103's, modded 110's? Thats the question that I'd want answered, not a list of spec that create more guesswork. But hey, go with your gut and I hope you are happy with whatever you choose to do.
Road Captain
Joined: Jan 2014
Posts: 566
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From: The Redneck Riviera
To me it would be a no-brainer to go with the Andrews.
Andrews has a great reputation making Harleys run better since the Shovelhead days...
Cole has what? 2 cams out for a little over a year or so?
Andrews has probably forgotten more about V-twin cam design than Cole will ever know...
That, and along with Steve's Secret Squirrel s*** would have me leaning towards Andrews
Andrews has a great reputation making Harleys run better since the Shovelhead days...
Cole has what? 2 cams out for a little over a year or so?
Andrews has probably forgotten more about V-twin cam design than Cole will ever know...
That, and along with Steve's Secret Squirrel s*** would have me leaning towards Andrews
HDF Community Team
Joined: Jun 2006
Posts: 12,778
Likes: 2,608
From: san antonio
To me it would be a no-brainer to go with the Andrews. Andrews has a great reputation making Harleys run better since the Shovelhead days...Cole has what? 2 cams out for a little over a year or so? Andrews has probably forgotten more about V-twin cam design than Cole will ever know... That, and along with Steve's Secret Squirrel s*** would have me leaning towards Andrews
Who can blame him for keeping the specs to himself. If you understand cam profiles, can you see what is different about Steve's profile than the 255? I am betting you can't. The specs I posted came from someone with the equipment and skills to actually measure them; not published by Mr. Cole. Still waiting for the TTS150 profile but haven't found it yet.
HDF Community Team
Joined: Jun 2006
Posts: 12,778
Likes: 2,608
From: san antonio
I am thinking the TTS150 may be for a similar application but for better breathing 103s and larger displacement motors.
Road Captain
Joined: Jan 2014
Posts: 566
Likes: 70
From: The Redneck Riviera
Steve worked on the TTS100 design for at least a year and tested at least six profiles, on the dyno, before settling on the current profile. He had a singular goal which was to optimize the performance of an otherwise Stage I 103" bagger motor and the TTS100 does that in spades for about 95% of those that ride Stage I 103" baggers.
Who can blame him for keeping the specs to himself. If you understand cam profiles, can you see what is different about Steve's profile than the 255? I am betting you can't. The specs I posted came from someone with the equipment and skills to actually measure them; not published by Mr. Cole. Still waiting for the TTS150 profile but haven't found it yet.
Who can blame him for keeping the specs to himself. If you understand cam profiles, can you see what is different about Steve's profile than the 255? I am betting you can't. The specs I posted came from someone with the equipment and skills to actually measure them; not published by Mr. Cole. Still waiting for the TTS150 profile but haven't found it yet.
Yes and as you have posted, there is equipment now readily available to duplicate cam profiles... so that anyone wanting to duplicate any cams can easily do so... except for racing series like Formula 1 where they keep everything a secret and the components are kept under lock and key when not on the track, everything ( available to the public) is easy to duplicate now...
My reference to the secret squirrel s*** was that any Cam Company could easily buy a set of his cams and copy them, but making the specs available would help an educated Layman make an informed decision.
Me, I'm not that sophisticated, I just look at Dyno Sheets and pick the curves / #s that suit my application...
HDF Community Team
Joined: Jun 2006
Posts: 12,778
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From: san antonio
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
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From: SoCal
That was not the intent of posting the TTS100 specs; simply put, the 255 is a cam many are familiar with and delivers somewhat similar performance as the TTS100 with the emphasis on torque off idle. The 255 specs were just a baseline to compare the TTS100 against. I am betting most that make the comparison will not be able to distinguish the differences or the impact on performance but figured the 255 was as good as any for a baseline comparison.
I am thinking the TTS150 may be for a similar application but for better breathing 103s and larger displacement motors.
I am thinking the TTS150 may be for a similar application but for better breathing 103s and larger displacement motors.
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Cruiser
Joined: Sep 2012
Posts: 208
Likes: 1
From: Canada
From what I gathered from Steve, the TTS 150 basically comes on later than the 100 (so less TQ from idle) but pulls harder in the higher RPM than the 100. So when I explained my riding style to Steve (mainly solo, 160 LBS, prefer more TQ in the higher RPM range) he suggested the 150.
The guy at Andrews suggested the the 54 for the same reasons. I need to choose one and get it over with but I'm a bit apprehensive is all. You've all been amazingly helpful and kind in taking the time to answer these posts and I really appreciate it.
I'm wondering that if I had at this very moment a decent 2 into 1 exhaust, with my S&S 106 and stage 1, would anyone suggest a different cam over the TTS 105 or the Andrews 54? I ask because I may end up with one sooner that I thought.
The guy at Andrews suggested the the 54 for the same reasons. I need to choose one and get it over with but I'm a bit apprehensive is all. You've all been amazingly helpful and kind in taking the time to answer these posts and I really appreciate it.
I'm wondering that if I had at this very moment a decent 2 into 1 exhaust, with my S&S 106 and stage 1, would anyone suggest a different cam over the TTS 105 or the Andrews 54? I ask because I may end up with one sooner that I thought.
Ultimate HDF Member
Joined: Jan 2008
Posts: 6,532
Likes: 132
From: SoCal
From what I gathered from Steve, the TTS 150 basically comes on later than the 100 (so less TQ from idle) but pulls harder in the higher RPM than the 100. So when I explained my riding style to Steve (mainly solo, 160 LBS, prefer more TQ in the higher RPM range) he suggested the 150.
The guy at Andrews suggested the the 54 for the same reasons. I need to choose one and get it over with but I'm a bit apprehensive is all. You've all been amazingly helpful and kind in taking the time to answer these posts and I really appreciate it.
I'm wondering that if I had at this very moment a decent 2 into 1 exhaust, with my S&S 106 and stage 1, would anyone suggest a different cam over the TTS 105 or the Andrews 54? I ask because I may end up with one sooner that I thought.
The guy at Andrews suggested the the 54 for the same reasons. I need to choose one and get it over with but I'm a bit apprehensive is all. You've all been amazingly helpful and kind in taking the time to answer these posts and I really appreciate it.
I'm wondering that if I had at this very moment a decent 2 into 1 exhaust, with my S&S 106 and stage 1, would anyone suggest a different cam over the TTS 105 or the Andrews 54? I ask because I may end up with one sooner that I thought.