Heat shield removal

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It's funny how on my bike I notice it more so on the right. Maybe because we drive on the left side of the road 😆
 
In the US it's left calf just below the knee. I've looked down to see if I was smoldering when stuck behind a dipshit rolling 5 under the 35 MPH speed limit on a back road.
 
Has anyone noticed a difference with a carbon subframe?

Would be nice to have a superlegerra subframe that doesn't absorb so much heat, not sure if it's direct fit but illmberger makes one too. I tend to get burned where the frame arms meet the engine
 
bp_SFV4 said:
I’m either on a track or out for a short ride on the backroads. If I was wanting to get out for hundreds or thousands of miles I’d get a Multistrada V4. I think that would even be a good bike for an occasional track day.
Click to expand...

Yep a multistrada. Taller, heavier with less power, just what I want. I'll get right on it.
 
Luggage bags, heated grips, radar cruise control, blind spot monitoring, more than enough power for the street. Heated seats for two no less. Not that anyone could put up with you for long, but I digress.
 
Mcv4 said:
I don't really mind the heat on my 22 pani. Only use this bike as a road bike and predominantly for 4-500km day rides or long road trips (first one was 3000+ kms) with a rack on the back lol. It's my first ducati after years on s1000rr's and have say with both stock exhaust or the full akro system on it now, I've never noticed heat from the seat only from both sides on the lower legs. Spend most of time in leathers and it's a non issue. Only ever does it become something to deal with in jeans if going for a local cruise which is not what I bought the bike for anyway.
The thing I find weird though is comparing this bike to my girlfriends 2021 RSV4. Same engine config and size, exhaust is a bit different on the rear bank but I don't feel heat from that area on the pani anyway. The RSV4 engine runs a lot hotter than my bike however. Coolant temp climbs up like a mfer when stopped. Strangely enough no heat to be felt from anywhere when riding it. Feels like any other 1000cc I4 bike. Is the heat on a panigale just due to the way the air flows through and exits the fairings? Food for thought..
Click to expand...

I’ve noticed the same - pv4 puts out more felt heat than my rsv4 and more than my previous liter bikes (including a turbo gsxr 1000).

Any unique differences between the pv4 and every other liter bike?

At least one - the monocoque frame. Maybe bolting the monocoque and subframe to the motor ends up transmitting more felt heat to the rider than on bikes with traditional frame designs.
 
Astral11 said:
Has anyone noticed a difference with a carbon subframe?

Would be nice to have a superlegerra subframe that doesn't absorb so much heat, not sure if it's direct fit but illmberger makes one too. I tend to get burned where the frame arms meet the engine
Click to expand...

Doesn’t @Steven31371 have a carbon subframe on his bike? Maybe he’ll chime in.
 
craig bush said:
I’ve noticed the same - pv4 puts out more felt heat than my rsv4 and more than my previous liter bikes (including a turbo gsxr 1000).

Any unique differences between the pv4 and every other liter bike?

At least one - the monocoque frame. Maybe bolting the monocoque and subframe to the motor ends up transmitting more felt heat to the rider than on bikes with traditional frame designs.
Click to expand...

That's a very valid point. No enormous heat sink to help disperse and dissipate heat
 
I’m thinking it’s more the flow separation of the air under the rear subframe. Unfortunately the rear cylinders exhaust exit into this dead space and the heated trapped air stagnates.
 
bp_SFV4 said:
Luggage bags, heated grips, radar cruise control, blind spot monitoring, more than enough power for the street. Heated seats for two no less. Not that anyone could put up with you for long, but I digress.
Click to expand...

Ouch. I've been told I'm a good guy with my helmet on. The SF/Panigale has heated seating too. I currently have 5 ducatis. I wouldn't have a multistrada.
 
craig bush said:
Doesn’t @Steven31371 have a carbon subframe on his bike? Maybe he’ll chime in.
Click to expand...

Yes the CF subframe reduces heat compared to the stock subframe, which acts like a radiator fin absorbing and transferring heat…I’m running a Motoholders subframe now, it transfer less heat than the stock one by a lot too, less metal and mass absorbing and retaining heat.

However, the biggest difference maker overall in heat is from putting the H20 radiator on there combined with the fan strategy of turning on the fan at a lower temp.

Even on 100 degree plus days my bike only touches 4 bars at the track when it’s under under the most duress possible, then drops to 3 bars super fast when you drop below 11-12k rpm, in more casual riding it rarely goes above 2 bars, and if it’s below 70 degrees out I have to put some duct tape on it to shield the radiator so it doesn’t take 2 or 3 laps to get up to operating temps.


The stock subframe is horrible, too much heat conductive metal mass, either a Motoholders or Pierobon style subframe or a CF subframe both eliminate the subframe heat build up.
 
bp_SFV4 said:
In the US it's left calf just below the knee. I've looked down to see if I was smoldering when stuck behind a dipshit rolling 5 under the 35 MPH speed limit on a back road.
Click to expand...

I’ve actually gotten burns on that left calf when I first got the bike before modifying it.
 
Steven31371 said:
Yes the CF subframe reduces heat compared to the stock subframe, which acts like a radiator fin absorbing and transferring heat…I’m running a Motoholders subframe now, it transfer less heat than the stock one by a lot too, less metal and mass absorbing and retaining heat.

However, the biggest difference maker overall in heat is from putting the H20 radiator on there combined with the fan strategy of turning on the fan at a lower temp.

Even on 100 degree plus days my bike only touches 4 bars at the track when it’s under under the most duress possible, then drops to 3 bars super fast when you drop below 11-12k rpm, in more casual riding it rarely goes above 2 bars, and if it’s below 70 degrees out I have to put some duct tape on it to shield the radiator so it doesn’t take 2 or 3 laps to get up to operating temps.


The stock subframe is horrible, too much heat conductive metal mass, either a Motoholders or Pierobon style subframe or a CF subframe both eliminate the subframe heat build up.
Click to expand...

I cannot believe that Ducati yet again used that 149 F thermostat. WTF. They've used this same part (in various housings) since the first desmoquattro's. Ducati what's wrong with a 180 F or even a 195 F one? I've actually made shields that set behind the radiator rockshields to deal with that exact issue.
 
Steven31371 said:
Yes the CF subframe reduces heat compared to the stock subframe, which acts like a radiator fin absorbing and transferring heat…I’m running a Motoholders subframe now, it transfer less heat than the stock one by a lot too, less metal and mass absorbing and retaining heat.

However, the biggest difference maker overall in heat is from putting the H20 radiator on there combined with the fan strategy of turning on the fan at a lower temp.

Even on 100 degree plus days my bike only touches 4 bars at the track when it’s under under the most duress possible, then drops to 3 bars super fast when you drop below 11-12k rpm, in more casual riding it rarely goes above 2 bars, and if it’s below 70 degrees out I have to put some duct tape on it to shield the radiator so it doesn’t take 2 or 3 laps to get up to operating temps.


The stock subframe is horrible, too much heat conductive metal mass, either a Motoholders or Pierobon style subframe or a CF subframe both eliminate the subframe heat build up.
Click to expand...


Does the H20 radiator come with a bung for pressure transducer or did you modify it, did you use Woolich for the fan strategy? Could you elaborate on the setup? Very smart idea to monitor water pressure and adjust the fans.

Also thank you for confirming the CF subframe dissipates heat faster
 

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