Triumphrat

bsmith222 · 09-25-2006

Hey Gang - FYI, We now have the 865cc 360 camshafts from Thunderbike now in stock!! Here's MORE INFO

-brent

road_dog · 09-25-2006

Great move Brent.

Some day I hope to get the camshaft and 904cc bore kit... some day. :hihi:

Panthermark · 09-25-2006

Very nice, any dyno runs with just the cams and no pipes?

DickBender · 09-26-2006

What about figures on a 790?

Darcy

ohiorider · 09-26-2006

Brent - can you comment on the general 'rideability' of a 790cc or 865 cc after installation of the performance cams? From the graph, it would appear that performance across the rpm range is improved, which should mean that the bike would still run nicely in the lower rpm range (I think).

Bob

sweatmachine · 09-26-2006

These cams are meant for the 865 motor, I'm sure they'd fit in the 790 but benefits?

They leave the bike essentially unchanged until 6,000 rpms then the party begins. That dyno curve shows a bike with the head worked on too, a port/polish job. Although they only make more power on top, the increased exhaust scavenging effect should make the bike seem much quicker to rev at any RPM. They are expensive, but I bet they're fun.

They're on my list...

HiVel · 09-26-2006

Where is the torque curve?????

bsmith222 · 09-26-2006

Right, the cams were developed on an 865 bike. And that's what they're being sold for. Unfortunately, I doubt they'll do any cams for us (790 riders). here's the torque chart;

-brent

SCCTrim · 09-26-2006

Is anyone else concerned looking at the torque curve in the graph below? The hp numbers are impressive, about 10 more pony's over my bike it seem's. Sitting here looking at my dyno sheet from when my motorwork was done...I'm making as much torque as the motor in the graph below.

However my torque peaks at 5k...where tbikes peaks at what look's like 6800. My bike peaks right where tbikes has it's largest dip.

sweatmachine · 09-26-2006

10 more is a lot when you think about it percentage wise, these cams (with the unmentioned headwork) give about a 15hp gain, which works to over a 20% benefit if you assume a bike with intake/exhaust properly jetted makes 65hp.