Here's my 2018 52hp Supersport Race build - Honda CBR500R Forum : CB500F and CB500X Forums
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post #1 of 27 (permalink) Old 05-22-2018, 11:02 AM Thread Starter
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Here's my 2018 52hp Supersport Race build

So this year I built a 500 Supersport legal race bike. Aside from my normal Production Cup Race Bike builds, I added:

Adreanani Fork Cartridges
Brembo RC 16x18 front brake master cylinder
Custom Aluminum front fairing stay
Custom Extra radiator
Motion Pro radiator catch bottle
Lightened rear subframe
Trail tech water temp gauge
Manual cam chain tensioner
CarbonSmith Race Pace Air Filter
Bazzaz ZFI TC QS (air fuel control, traction control, and quick shifter)
Supersport Motor - 52 hp - 38 ft lbs - stock cams
Supersport Transmission - 7° back cut

Attached Images
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File Type: jpg IMG_20180501_235402_1527001333859.jpg (148.1 KB, 119 views)

2017 Sponsors - Honda Powersports, Pirelli Tires, Galfer Brakes, Race Tech Suspension, Vortex Racing, Racer Gloves, Sol Performance, Quik Cycles, BloodNickle Leathers
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post #2 of 27 (permalink) Old 05-22-2018, 11:17 AM Thread Starter
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Here's some more pictures
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File Type: jpg IMG_20180501_235659_1527001790136.jpg (136.9 KB, 69 views)
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File Type: jpg FB_IMG_1524142448027_1527002253257.jpg (64.7 KB, 94 views)

2017 Sponsors - Honda Powersports, Pirelli Tires, Galfer Brakes, Race Tech Suspension, Vortex Racing, Racer Gloves, Sol Performance, Quik Cycles, BloodNickle Leathers
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post #3 of 27 (permalink) Old 05-22-2018, 11:56 AM
Thanks for sharing the pics, I am surprised that it needs a second radiator, but it all looks to have been well fitted and nicely made.. Let us know how you do in the race series..


Gary
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post #4 of 27 (permalink) Old 05-22-2018, 12:35 PM
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Impressive. Can’t wait to hear how you do.

John
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post #5 of 27 (permalink) Old 05-22-2018, 12:47 PM
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Cool bike!

Well done.

Snade

bike - - - > 2014 Honda CB500F (black)

cars - - - > 2015 BMW M235i w MT, 2017 Audi A4

life goals - - - > take things easy, be helpful to others, and enjoy

"When a horse learns to buy martinis, I'll learn to like horses." Steve McQueen
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post #6 of 27 (permalink) Old 05-22-2018, 12:59 PM
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really nice, hopefully it will last you a while, because it seems a lot of money was put into it
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post #7 of 27 (permalink) Old 05-22-2018, 05:24 PM
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Quote:
Originally Posted by MraRacer#934 View Post
So this year I built a 500 Supersport legal race bike. Aside from my normal Production Cup Race Bike builds, I added:

Adreanani Fork Cartridges
Brembo RC 16x18 front brake master cylinder
Custom Aluminum front fairing stay
Custom Extra radiator
Motion Pro radiator catch bottle
Lightened rear subframe
Trail tech water temp gauge
Manual cam chain tensioner
CarbonSmith Race Pace Air Filter
Bazzaz ZFI TC QS (air fuel control, traction control, and quick shifter)
Supersport Motor - 52 hp - 38 ft lbs - stock cams
Supersport Transmission - 7° back cut
Very impressive. From the dyno chart if we assume that the displayed alues are the wheel figures, thus the "before" measurement's 42 hp equals to the stock 35 kW, then the measured 52.29 is actually very close a whopping 60 hp at he crank. But what I like the most, that based on the dynos the bike has licked up significant amount of torque too.
Really nice. I'm sure with all the suspension and brake upgrades it should be a blast on the track.
I have a lot of questions regarding the motor build. In case you feel not to share some stuff in public, feel free fo answer in a PM.
I see that you had the head and potentially the cylinder top shaved quite a bit. How much gou have demoved, what is your calculated CR, and what AFRs are you running? Are you still using the stock head gasket and piston and running on pump gas? I see that you have not raised the rev limit too much - have you done any work on the crank or rotating assembly? Have you done any machining (port, polish etc) apart from the milling of the head? Anything done on the throttle body, velocity stacks or airbox? What exhaust are you using on the bike? What kind of ignition advance you running on?
Also the Brembo radial Master is adapted from a production bike, or bought it new?
Thanks in advance.
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post #8 of 27 (permalink) Old 05-22-2018, 07:37 PM Thread Starter
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Quote:
Originally Posted by Oyabun View Post
Very impressive. From the dyno chart if we assume that the displayed alues are the wheel figures, thus the "before" measurement's 42 hp equals to the stock 35 kW, then the measured 52.29 is actually very close a whopping 60 hp at he crank. But what I like the most, that based on the dynos the bike has licked up significant amount of torque too.
Really nice. I'm sure with all the suspension and brake upgrades it should be a blast on the track.
I have a lot of questions regarding the motor build. In case you feel not to share some stuff in public, feel free fo answer in a PM.
I see that you had the head and potentially the cylinder top shaved quite a bit. How much gou have demoved, what is your calculated CR, and what AFRs are you running? Are you still using the stock head gasket and piston and running on pump gas? I see that you have not raised the rev limit too much - have you done any work on the crank or rotating assembly? Have you done any machining (port, polish etc) apart from the milling of the head? Anything done on the throttle body, velocity stacks or airbox? What exhaust are you using on the bike? What kind of ignition advance you running on?
Also the Brembo radial Master is adapted from a production bike, or bought it new?
Thanks in advance.
Thanks! Yes dyno numbers are measured at the wheel, and are corrected for altitutde @ 5200'.

We took .093 out of the motor between the head and the block combined (not going to share the specifics on each).

Squish is .019

Calculated CR is 14.0:1, AFR = 11.8 on 91 octane pump, stock 9100 rpm rev limit

Everything inside the motor is still stock: cams, gasgets, crank, pistons, rings, throttle botties, head ports, etc.

Cams are degreed to 105 ex and 105 in

Full Hindle Megaphone exhaust

No ignition timing change - yet.

The master is just a regular Brembo 16 x 18 master cylinder made for a single caliper

The only change to the airbox is that I am using a filter that replaces the entire airbox cap and allows for +50% more airflow into the motor
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post #9 of 27 (permalink) Old 05-23-2018, 04:59 AM
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Quote:
Originally Posted by MraRacer#934 View Post
Thanks! Yes dyno numbers are measured at the wheel, and are corrected for altitutde @ 5200'.

We took .093 out of the motor between the head and the block combined (not going to share the specifics on each).

Squish is .019

Calculated CR is 14.0:1, AFR = 11.8 on 91 octane pump, stock 9100 rpm rev limit

Everything inside the motor is still stock: cams, gasgets, crank, pistons, rings, throttle botties, head ports, etc.

Cams are degreed to 105 ex and 105 in

Full Hindle Megaphone exhaust

No ignition timing change - yet.

The master is just a regular Brembo 16 x 18 master cylinder made for a single caliper

The only change to the airbox is that I am using a filter that replaces the entire airbox cap and allows for +50% more airflow into the motor

Thanks for sharing more of the details Ryan.

That 0,093 inch or close to 2,3mm total reduction is quite a lot. From seeing the piston at TDC I'd guess it is at least about 0,8-1 mm from the cylinder and the rest is from the head both for reducing squish and not to end up with extraordinary amount of CR. Very interesting.

With that I understand now why the manual cam chain tensioner. Have you degreed the cams by removing the wheels and pushing them back offset, or just by different positioning with the chain? How much did the degreeing contibuted to the current power figures?

I think playing with the ignition can bring some more power - possibly in the midrange. Do you find the Bazzaz much better than the PCV? If yes in what aspect?

Are you still on stock fuel injectors? What is your duty cycle at WOT before rpm cutoff?

Dunno about your race specifications, but a bit of honing on the throttle bodies and new velocity stacks might help with the abrupt trailing off of the torque and help further ponies up at higher revs.

I guess you have read the news that for world SBK ssp300 class from Assen's race weekend Honda has got some adjustments to match the others.

From the article "So for this weekend, the Honda’s minimum weight is now 153kg and its rev limit is 10,200" .... "Honda competitors may also shorten their air funnel and remove the airbox intake tube."
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post #10 of 27 (permalink) Old 05-23-2018, 05:10 AM
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Oh. And did you go for the TenKate (STM) slipper clutch at the end?
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