TTS100 CAM Data Measurements

[Admiral Akbar]

I don't know Todd. I just used the R&B calculators. Gave me 11.4:1 for the 117 inch static compression, and then 9.46:1 is the dynamic compression, and 197 ccp. So this is all pretty close to the other calculators I use.   


11.4 static

Camshaft, Rod Length, Boost and Altitude Correction to Compression

Your engine summary is as follows: Bore 4.125 inches, stroke 4.375 inches, rod c-c length 7.667 inches, with a static compression ratio of 11.4 :1. Your camshaft specifications call for an inlet valve closing of 56 degrees ABDC (after bottom dead center).

Your chamber volume is 92.13 cc's. With this camshaft your dynamic, or effective stroke is 3.63 inches. Your dynamic compression ratio is 9.46 :1 corrected for cam timing, altitude, and rod length. Your dynamic cranking pressure, corrected for cam timing, rod length and altitude is 197.23 PSI. Your dynamic boost compression ratio, reflecting static c.r., cam timing, altitude, and 0 PSI is 9.46 :1.

Fwiw, It's better to call the calculated CR "corrected" compression ratio.. Why? Because it is static calculation based on displacement only that is corrected for intake close.. Dynamic implies RPM.. It would be best to calculate a dynamic CR based on actual VEs at a specific RPM.. That would be dynamic..  That is what Performance Trends calls "dynamic compression"

[sgtmitch]

So now that the TTS-100 specs are published, I would like to hear opinions from the dyno guys as to how it stacks up as a Trike cam.

Installed these in my Dad's 2010 Triglide and love them. Great low end torque and they run out as far as he'll ever take it probably; maybe 4800-ish?

Can't offer any dyno results, don't have any yet. It seems to be running pretty good. I'm sure there's always more to be had, but he's happy where it is.

Of course bread and water is just fine if you've never had steak.

[glens]

I'd imagine that's a little more than "bread and water".

[sgtmitch]

Oh yeah, no doubt. I guess I could have come up with an analogy with less disparity. 

[JohnCA58]

So does anyone have one of these cams in stock and for sale right now ?

[UltraNutZ]

last I checked John, they're only available direct from TTS.

[JohnCA58]

last I checked John, they're only available direct from TTS.

Nope,  talk to Vickie at TTS,  Steve sold out and waiting on another order in couple weeks.

[Tommy D]

So does anyone have one of these cams in stock and for sale right now ?

Check with Steve @ FullSac, he may stock them?

[Ohio HD]

Or ask TTS who may buy them for stock.

[Tommy D]

Or ask TTS who may buy them for stock.

Yes, that also 

[DrSpencer]

2011, 103" Street Glide: Stage I, SE255's, Fuel Moto Jackpot Head pipe, Rineharts.

CCP with ACR's: FT: 175, RR: 175

CCP with ACR's disabled: FT: 230, RR: 230

Can anyone comment on these numbers?

Can anyone compare and contrast SE255's vs TTS 100?

Thanks

[DrSpencer]

2011, 103" Street Glide: Stage I, SE255's, Fuel Moto Jackpot Head pipe, Rineharts.

CCP with ACR's: FT: 175, RR: 175

CCP with ACR's disabled: FT: 230, RR: 230

Can anyone comment on these numbers?

Can anyone compare and contrast SE255's vs TTS 100?

Thanks

Anyone?

Thanks

[Gordon61]

well at least the cylinders read the same so that's good

230 seems a tad high from what I've read ...I was aiming for 195.

But what kind of gauge and how accurate is it (I paid less than $20 for mine so all bets are off on that one  ) ...and do the absolute numbers actually mean all that much anyway.  If it's not pinging like crazy and runs good then you're probably fine.

[DrSpencer]

well at least the cylinders read the same so that's good

230 seems a tad high from what I've read ...I was aiming for 195.

But what kind of gauge and how accurate is it (I paid less than $20 for mine so all bets are off on that one  ) ...and do the absolute numbers actually mean all that much anyway.  If it's not pinging like crazy and runs good then you're probably fine.

230 is with the ACR's disabled.

Is this still a concern?

Thanks

[rigidthumper]

They work really well for a torque cam- better than the 255 everywhere.  My sons CVO made 111/93 with the 255, DDFC, and DL tuner, switched to the TTS100 cams and made 117/98. Never worried about the high CCP, it's only a few pounds higher than the 255s.

[DrSpencer]

They work really well for a torque cam- better than the 255 everywhere.  My sons CVO made 111/93 with the 255, DDFC, and DL tuner, switched to the TTS100 cams and made 117/98. Never worried about the high CCP, it's only a few pounds higher than the 255s.

I thought the TTS100 gives lower CCP than the SE255?

Thanks

[Gordon61]

If yours is a stock 103 with stock head gasket and heads the Big Boyz calculator suggests that the CCP should be about 193 at sea level.

230 is more likely an inaccurate gauge.

Having said that I read something recently that suggested that absolute CCP numbers may be a bit of smoke and mirrors.  Apparently some of the calculators come up with different numbers and then you factor in tolerances and gauge accuracy and well the actual read number may not be that useful.  The good point is both pots read the same and the numbers are certainly high enough to suggest the engine is in good nic.

Maybe a separate question on CCP in the mechanical section will get some debate.

[rigidthumper]

Calculated CCP can differ from actual CCP for a number of reasons. Altitude affects it. Accuracy of measurements (GIGO). Gauge. Quality of seal at the head. Quality of the valve job. What happens between the number given on the cam spec sheet, and the actual valve close. Some manufacturers have gentler ramps, which is quieter, but bleeds off a little more pressure. Some have aggressive ramps, which close the valve quicker, trapping a little more pressure.
CVO 110 with a 255 is advertised at 9.3:1, so it should crank about 185 at sea level, less at altitude. I've never had a healthy one crank below 210, usually ~215, and I'm about a 1000' ASL. TTS 100 makes more torque, so I suppose it closes earlier.

[Karl H.]

I thought the TTS100 gives lower CCP than the SE255?

Thanks

The TTS100 has an earlier intake close than the SE255 (see reply #37). Therefore the CCP is higher.

Karl