LMP PRO (LMP2) – The Car
Dallara’s return to prototype racing for the first time since the original Audi R18 TDI, the P217 made its debut in 2017. The car competes in the LMP2 class in both the FIA World Endurance Championship and European Le Mans Series, while a Daytona Prototype International-spec version of the car races at the top level of the IMSA WeatherTech Sports Car Championship with Cadillac branding as part of a relationship with General Motors.
The LMP2 P217 is powered by a 4.2-liter Gibson V8, and features a six-speed sequential paddle shift transmission by Xtrac Drivers who raced in the car in its 24 Hours of Le Mans debut included Formula 1 legend Rubens Barrichello, former Le Mans winner Jan Lammers, and IndyCar veteran Mikhail Aleshin. Other Formula 1 veterans who have driven the car at Le Mans include Felipe Nasr, Sergey Sirotkin, and Giedo van der Garde.
LMP PRO (LMP2) – Wheel Build (In-Progress)
This is a DIY wheel build project by Pokornyi Engineering where the DIY files are available on his website. The guides for the wheel builds from Pokornyi are very high quality and go through very detailed steps required to assemble the design for the average DIY enthusiast with minimal knowledge of wheel building. This article will supplement the Pokornyi guide by giving my experience during the building of this wheel.
The build guide is available here: https://pokornyiengineering.com/products/lmp-pro-diy-files
This was written based on LMPPRO_v1.11_20220406 version of the build guide.
Printing the 3D Files
There are approx. 26 files to 3d print for this wheel, I printed most on the 3d filament printer, the front plates and knobs were printed on an SLA printer in standard water washable resin, the grips are printed on the SLA printer in F80 Resione rubber, and the rotary plates are printed on SLA printer in transparent resin.
LMP PRO 3D Print Files
| ClutchBody | FDM |
| ClutchLeverL | FDM |
| ClutchLeverR | FDM |
| DisplayFrame | FDM |
| GripCup | SLA |
| GripFrontL | SLA F-80 |
| GripFrontR | SLA F-80 |
| GripRearL | SLA F-80 |
| GripRearR | SLA F-80 |
| QRSpacer | FDM |
| RotaryPlateL | SLA Transparent |
| RotaryPlateR | SLA Transparent |
| ShifterBody | FDM |
| ShifterLever | FDM |
| WallA | FDM |
| WallB | FDM |
| ButtonPlateL_low | SLA |
| ButtonPlateR_low | SLA |
My experience with the 3d printing was mixed, the standard FDM printing was straight forward, supports need to be assigned to the wall prints and I spent some time removing the support material to get the carbon fibre back plate to finish flush later during assembly. I adjusted the support settings on the GTE PRO so check out that section for the support print settings.
The SLA printing was also straightforward for the water washable parts. Printing the transparent resin was awkward, the first transparent resin I purchased was poor and came out with a yellow tint, I tried again with EONO transparent and luckily that was much better and the prints came out good. I found it annoying to clean because IPA is needed.
The grips are printed in F-80 Resione black rubber, the print settings are downloaded from Resione and I did not have any issues with the printing, however it is smelly, thick resin and IPA is needed again for cleaning. The finished grips have a nice feeling, much better than covered 3d prints, more on that later in the grips section.