Is Grady Around?

[Neunelfer]

I sent him a PM with some tranny questions but never heard back. Maybe vacation? Maybe my PM didn't make it through...

[CamBiscuit]

He was as of last week.

I think it might be better to email him. I am at work and don't have his address, sorry. I believe it might be gradyclay@hotmail.com

Cheers

[Neunelfer]

Thanks,

I just had some gearing questions. Maybe he's not the right person to ask... I thought he was the transmission guru. (they give me the hives)

[kenikh]

Post your question; I may be able to help. I have this weird obsession with 901 gearing splits. If it is 915 gearing, I can't help.

[Grady Clay]

I'm here.

Post your question or email me.
The email address posted above is correct.
Too often I don't get PM.

Best,
Grady

[Grady Clay]

Eric,

OK, I read your PM. I think you must have a flipped type 911/01 5-speed. I have two of those for my SCCA GT2 914-6. I don't find a type 911/02 in my lists. I assume you have a side-shifter linkage (better than 911).

Please email me at the address posted above or (better yet) post here.

The transmission types 904, 901. 906, 910, 911 and 914 are all basically the same. These are VERY easy to deal with and re-gear at will. I can change ratios between track sessions. I'm in the process of training Pelican speedo to be able to do this with his type 911/01.

There isn't any mystery to these transmissions. (no hives)

As to ratios, the 901/911 is ideally suited to racing as a racing 4-speed with a starting gear and reverse. Generally you choose a 2nd gear suitable for the slowest corner and a 5th gear suitable for the highest speed. The 3rd & 4th are then chosen for a progressively less rpm drop shifts (2-3, 3-4, 4-5). I have written extensively about this on Pelican.

There are some tracks that using only three gears (3-4-5) are appropriate. I am genrally not happy with an asymetrically very tall 5th gear on a 901/911. (This can be different with a 915 where you can have 1-2-3-4 as the racing gears and not use 5th on track.)

I am a proponent of using an electric pump, screen filter, magnets and an oil cooler to protect and extend the life of all 901/911 (and 915) track transmissions.

I much favor a spool over even the tightest LSD. Search Pelican.

I use the 108 mm CV joints ('69-'71) on 914-6 axle shafts.

When you flip the ring gear (crown wheel) on a type 911/01 to use in a 914 application, you MUST re-drill the location of the breather. (Same is true when using a 914 casting in a 911 application.)

Search Pelican on 'dam seal'.

There are all sorts of other 'tricks.'

Best,
Grady

[Neunelfer]

Worship.

Let me do some digesting. Yes, it's a flipped 911/01 side shifter. And now I have a better understanding of why it is geared the way it is... makes sense.

Thanks!

E.