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TAPP Clutch Install

On my H2 the primary never got hot. It was always the secondary that was extremely hot. I am thinking the Tapp secondary will probably improve airflow and belt temps. I have not seen anyone post about results running the Tapp secondary with the Evo clutch cover mod.

I think for now maybe running a second tube for air flow directly onto the secondary (Like what Polaris did on the Turbo cars) would be helpful or finding a way to add cooling fins. Maybe some one can make the fins that bolt on like on your Tapp primary.
 
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When I first tested mine on the street after the Tapp Primary install I got several temperature readings on the primary and secondary sheave without the cover. The temps on the sheave never seemed that high. The inner sheave faces got slightly warmer, but never seen over 100 degrees. I pulled the cover in the dunes after some running and I thinknthe hottest I seen was like 140 degrees, but I'm sure they were hotter while running.

I see Razorback has a cvt fan that works like a thermostat in combination with their guage. But its over $400, so with guage your spending another $800. Not seen any real world tests, so I'm worried that the inline fan could restrict airflow.

I agree with you, there needs to be a second inlet by the secondary.
 
AXE said:
When I first tested mine on the street after the Tapp Primary install I got several temperature readings on the primary and secondary sheave without the cover. The temps on the sheave never seemed that high. The inner sheave faces got slightly warmer, but never seen over 100 degrees. I pulled the cover in the dunes after some running and I thinknthe hottest I seen was like 140 degrees, but I'm sure they were hotter while running.

I see Razorback has a cvt fan that works like a thermostat in combination with their guage. But its over $400, so with guage your spending another $800. Not seen any real world tests, so I'm worried that the inline fan could restrict airflow.

I agree with you, there needs to be a second inlet by the secondary.
Click to expand...

Not sure that fan will do much on the inlet side. Perhaps it would help on the outlet/exhaust port get that hot air out and away from the secondary.
 
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Sand Shark said:
Not sure that fan will do much on the inlet side. Perhaps it would help on the outlet/exhaust port get that hot air out and away from the secondary.
Click to expand...
After I removed the temp sensor cvt exhust elbow, I was able to get a better feel for how much air could move through the system. Idling it wasn't much, revving in neutral it was a noticeable amount. However, we took a leave blower from a couple feet away and it immediately moved a massive amount of air. So the system can move air, but its starved for air cause there minimum fan blades. This is where a second inlet line on the side of the CVT cover might improve cooling considerably.

I'm not sure its worth chasing, may just have to get the Tapp secondary and be done with it. I think the La Rue has an advantage with the double sided cooling fins, which also help at idle and slow speeds. Seems like the Tapp primary could have had a set of cooling fins machined into the cap.
 
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