Morning all I've managed to source almost all of the parts I need to convert my 98 F1 to manual gearbox control. However a couple of the parts i need seem to be completely unavailable, so I wanted to ask if anyone has them, or knows of where i can source them. The missing bits are: Item 5 - 154745 - BALL Item 6 - 154741 - BALL CONTAINING BUSHING The 2nd part must be a service item, so surprising that it's not possible to locate. Alternatively, i have access to a pretty good machine shop, along with some fancy 3D printers, so if anyone can measure these parts I could get them recreated! thanks Joe Image Unavailable, Please Login
If you can machine #5, that would be a great service to the community. It's a simple part, impossible to find, and I have one. Happy to share for production purposes. As for #6, Eric at Stradale Cars in the Netherlands 3D printed a run of them. You can contact him here: https://www.stradalecars.com/nl/
Nice project Joseph, are you listed ALL parts you need to do the conversion ? Could you please share this list ?
That's a simple part#5, what material is the ball? Send me the specs if you can. It's harder to do that one would think due to the material holding. Is the oem #6 plastic, I suspect not as that would wear. that's also easy to make out of aluminum. Sent from my SM-G990U using FerrariChat.com mobile app
Thanks for that! I'll try and make contact with Eric, perhaps he'd be willing to share the 3D geometry with me. Do you have any capability to measure the ball part? It looks like it should be pretty straightforwards, but maybe i am underestimating the geometry. Looking at the image i found (attached) it looks like some kind of glass filled nylon, but it could just be dusty! Image Unavailable, Please Login
Guessing on size, set it arbitrarily at 1.25 inches diamater. $35 dollars a piece for a run of 10 in 6061 aluminum. $43 dollars a piece for a run of 10 in 12L14. Image Unavailable, Please Login Image Unavailable, Please Login
Okay, here are some pics and specs for the ball. First, the extremely painstakingly drawn and highly professional sketch of the ball measurements: Image Unavailable, Please Login And some reference pics. Note the chamfer around the inside edge of the main hole. It's .5mm and the top face of the hole is 1mm width. Everything else is very simple. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
Should be an easy item to machine on a mill. Appears to be steel, and all drill and machined edges have been chamfered.
Excellent Work! I've thrown those into a drawing, hopefully captures everything. 3D files - https://www.printables.com/model/359354-ferrari-f355-gearstick-pivot-ball Before I get my guy to machine one, i'll DLP print it in some good quality resin to try if it all fits OK. Eric @ Stradale got back to me, seems they are planning on having a batch made of the bushing part, cost is around 70€ plus VAT & Delivery. I would prefer to get hold of an original if possible, so we can have a 3D model / design that we can share within the owner group for when it's needed.
I would check my diameter measurements for the main hole and the pin hole against the gear shift lever and retaining pin. The pin is interference fit so it has to be precise. I measured the pin diameter and both it and the pin hole were 3.5mm on my caliper, but I am using simple stuff whose resolution isn't that good past 1/4 mm. The main hole isn't as important since the fit is just to allow the shift lever to press down when you go into reverse.
Bit of an update (i know.... no-one cares ) After measuring up my gearstick i made some small changes to the ball part, new drawing attached in case anyone wants.... I DLP printed it to do some trial assemblies etc. Came out quite nice. Image Unavailable, Please Login I decided to have a go at recreating the bushing part myself too based on measurements from the housing. A couple of protos in PLA to adjust and then this one is printed in PVDF. Just FDM printing, so not the best quality, but PVDF is quite a high performance plastic, good creep resistance, high temps etc. but for this application it has a really low coefficient of friction, which should suit well. Image Unavailable, Please Login Assembled together Image Unavailable, Please Login The action is super smooth. I'm waiting for some roll pins (M4x36mm) and then i can do some assembly trials. As said i'll get the ball part machined up out of metal eventually, but at least for checking my dimensions are correct this will be good enough.
Thanks folks - I did throw the 3D file for the Bushing on Printables also.... Definate work in progress at the moment though. https://www.printables.com/model/379049-ferrari-355-ball-countaining-bushing
If someone is going to make a run of any or all of these parts I’d like to buy two of each plus happy to contribute a bit more to offset R&D. Thanks!
Heck I'd just settle for the lowly little gear that fails in the vent diverter assembly. I'm a simple man.
Progress is being made on this thing. The gearstick assembly is now in place, all seems pretty good, it's nice and smooth and returns to centre well. This is a hill engineering gate, much cheaper than a 2nd hand factory one. Image Unavailable, Please Login The hole in the 3D printed space plate needs enlarging, couldn't get that last screw in! Also have been working on the pedals. 3D printed mock up of how i think the clutch pedal should be, it's still not 100% correct, but before i get some metal parts laser cut I will print a "final" version. Image Unavailable, Please Login In case anyone is ever looking, I found that an LPR 7102 clutch cylinder; https://www.motointegrator.de/artikel/275932-geberzylinder-kupplung-lpr-7102 Is almost identical to the 355 one. Only difference being that the holes (where it bolts into position) are threaded, so drilling them out to 8mm solves the problem. I think i'll get extra metal parts cut for the pedal design, should help cover the costs a bit if i can sell a few sets after!
Fail..... Clutch pedal too far to the left. Can anyone with a manual car please measure the gap between the pedals for me so I can adjust my design. Thanks! Image Unavailable, Please Login
I'd give you mine, but I can't guarantee LHD is the same as RHD. Would you need the distance beween the pedals or the pedal arms?
After looking at mine, there would be no point giving you my RHD measurements.... Too much curve on the lower part of the arms (and I couldn't fit my caliper higher up into the footwell) .... and my pedals are bigger than yours... Image Unavailable, Please Login Anyway, for comparison on my car.... Image Unavailable, Please Login ... the average distance between the brake and clutch (top to bottom) was around 58mm. The accelerator pedal was set too far back and angled to get a proper measurement, but I estimate (laterally) at the point shown... 55mm Image Unavailable, Please Login
