MFH Porsche 917 Le Mans Winner 1971 in 1:12 Scale

[jmpsebring]

soooo many talented people here

[VR2]

many thx for your nice comments. I'm learning a lot from all the great people on this forum. Good to see that I can give a bit back to my fellow modelers

[Preludevenom]

Absolutely incredible build here !!! What a level! it's gorgeous and it's a beauty to watch step by step! Can't wait to see the next steps of it

[Leftkeys]

Uli, thanks for the link to Miko. I’m “of a certain age” and not on Facebook. In fact, I think my kids would kill me if they ever found out I had an account. It’s bad enough, they think, that I know what Instagram is. In any case, I’m all over the 917 parts. My stash has a 917K in it and, happily, the Sunoco car. As you may guess from my screen name, I’m a Porsche guy....

Best regards,

Bill

[Jeep]

Have you fired up the engine yet?

(Nice is too weak a word!)

[VR2]

Hello 917 Fans

While progressing on the completion of the rear frame (subject of next update), I've started also to make some new parts for the brakes.
The Le Mans winning car of '71 had drilled steel brake discs, which are not included in the MFH kit, so I've decided to machine new parts to correct this mistake.

MFH Kit Brake Disc

Interestingly, the drilling patterns applied by Porsche have been fairly random to prevent circumferential wear that may damage the disc under race conditions. Also holes on the same radius are well separated from each other to prevent cracks running from hole to hole (see book THE UNDERCOVER STORY).

Porsche 917 Brake Disc

I've designed a drilling pattern master/template, which depicts this random pattern (and the number of holes) as close as possible (see pic below)

Brake Disc Master Pattern

This pattern has to be drilled for 8 Disc parts in total (summing up to almost 900 manually drilled holes of 0,6mm each)
After drilling, each disc is cut on the lathe

Cutting the Disc on the Lathe

The Brake Discs are attached on a mounting flange (called "the Bell"), which I've machined from aluminum

Machined Brake Disc "Bell"

The pic below compares the machined parts and the MFH parts. What is still missing are the new machined central shaft with the central nut and the 5 bolts on the Bell

Machined Parts vs. MFH Parts

Finished Brake Disc with Bell

I'll make a 2nd set of this parts for the upcoming 917/30 kit as MFH most likely will not supply the drilled discs in their new 917/30 kit (at least what could be seen from the parts list posted by MFH) ... so another 900 holes to be drilled .....

Many thx for your time and interest.

BR,

Uli

[daniel]

Very impressive...how many drills have you "killed" during the process

Were are you from ? I really need to come over on see the magic in real live

[banzai]

Duplicating the hole pattern in the brake disks? All I can say is Wow! Very Cool and impressive, but at the same time, it kind of makes me just want to put all my tools away and call it a day. I think the bar just got raised...

[F1Noob]

Uli

I am going to need you to make these available for purchase Looks incredible

[VR2]

Hi

... I've killed 2 drills during the process und wohne in der Nähe von Stuttgart, Daniel

F1Noob, I'm sorry, but parts are not intended for sale as don't have a CNC lathe/milling machine. However, if there is a sufficient interest/demand, I may think about to work on/publish a step-by-step e-book on building and super-detailing the MFH Porsche 917's (K, LH, /30) which includes technical drawings of my machined and other scratch build parts at a reasonable price