Max Energy

T,
Thank you for your kind and always supported comments.
Going to test fit the Michael Mount 968 motor in next week.
ITB final clearance, plumb up the dry sump and start fitting the oversized radiator
Hope your project is going well. Looking forward to seeing you and Eon at NOLA PCA Race.
Let's talk, I have some questions for you
Max

Mike Goebel

Out of curiosity how do the stock spindles tend to hold up to being subjected to that much sticky rubber?

Thanks
Mike G.

951and944S

Never really had problems with spindles, maybe others can chime in on that, but cars looking for a lot of grip are usually very light which lessens the strain on parts.
The shock shaft upper bushings is under extreme load though, more likely to go before the spindle, at which point you are driving/racing with camber varying by multiple degrees.
Worth checking in normal maintenance.
Scary, but not nearly as bad as the ball joint pin snapping at 120 mph at the first turn of an esses section.

951and944S

These days, unless it's PCA SIM Racing, I don't know anything about anything.

You need an at track tech and pit wall guy...?

Max Energy

Mike
We haven't had any issues on the front. We have had issues breaking Rear Stubs, they are breaking at the splines and base of threads
Max

333pg333

Yes, to counteract bump steer. I just hadn't heard them referenced as drop spindles before. As usual, Max's parts look like good pieces.

Droops83

No, the extended ball joint pins/"drop spindles" are to correct the roll center/suspension geometry with a lowered ride height. The drop pins for the tie rods are there to bring the tie rods back to parallel with the control arms, and also allow for bump steer adjustment with shims, but they are only there because of the spindle height change. I adapted some existing kits for VW GTI and Porsche 911 to make a "budget" version of the same for my 951 some years ago.

Amazing race car pics, keep them coming!

951and944S

Exactly.
These were a thing when the lowrider pickup truck phase swept the USA in the 90's.

951and944S

Disregard, I see what he has there now in the pics might be confusing.

True "drop spindles" are a complete newly designed part with the wheel hub shaft raised during casting or machining with repositioning of the caliper mount during same.


What he has here is as described by Droops, basically a beefed up extended ball joint pin.
Midwest Motorsports here in the USA does the/sells the conversion for 944s.

333pg333

Yes, exactly. It brings the tie rods and control arms back as close to parallel which yes, it does correct roll centres but also has an effect on bump steer.

333pg333

That's what I was getting at. Thanks.

Droops83

Yes, it would be great if a true "drop spindle" were available for the 944, and instead of an actual spindle, a provision for an off-the-shelf bolt-on wheel bearing that accepts a Porsche-style hub, and a relocated steering arm, with double-shear attachments for the tie rod end and ball joint. But that would be $$$. See below, they are called "uprights" everywhere else in the world!

https://www.brypar.com/product-categ...me-r-uprights/

Mike Goebel

Shouldn’t it be a raised spindle? 🤯😆😂

Mike G.

Droops83

You are correct, but the American term "drop spindle" refers to the type of spindle you'd use if "dropping" or lowering your car, whether it be a pickup truck or VW. Backwards for sure, but a lot of people know what you mean when you say it .

OK, back to race car pics!

333pg333

Brypar are pretty local to us down here. Some years back I enquired about getting some custom uprights made. Was quoted circa $4-$5k au. Which would be considerably cheaper in US dollars. Group buy??