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rod change gear shift mod
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Author:  justfanginaround [ Sat Feb 16, 2013 1:06 pm ]
Post subject:  rod change gear shift mod
Howdy fellow Ausminiérs

Here is my question :? I have a rod change gearbox in our Nota Fang and I am wondering if it is at all possible to modify it so I can run the gear selection rod out the front of the case instead of out the back ?

If anyone has done this before any advise or pics :D would be fantastic and a big help.

Over the past 7 years of running this car in different events the gear change has let us down on more than the odd occasion so you can understand why i want to try and fix it.

Thanking you for your thoughts, pics and input.

Cheers Jon
Author:  drmini in aust [ Sat Feb 16, 2013 1:39 pm ]
Post subject: 
Yes with mods to the case it has been done, but unfortunately you give up reverse gear (as it's in the road of the rod)...
May not be too big a prob on a race car? :?
Author:  IndigoBlueCooperS [ Mon Feb 18, 2013 10:00 pm ]
Post subject: 
Take out reverse gear and extend the shaft in the box.
Works a treat, and use the front donk for reversing.
Have not missed a gear yet - touch wood :D


Image

Image
Author:  willy [ Tue Feb 19, 2013 12:34 am ]
Post subject: 
Every time I think about your car Dave, my mind boggles slightly more each time.

So cool!

8)
Author:  justfanginaround [ Tue Feb 19, 2013 5:57 am ]
Post subject: 
thanks indigo, that looks like what i need to do, we shall have no reverse as we only run 1 power unit


Off to the shed to tinker after work again
Author:  Kennomini [ Tue Feb 19, 2013 5:18 pm ]
Post subject: 
Why not sequential shift it... http://www.youtube.com/watch?v=Xjmf9TMJZG0
Author:  IndigoBlueCooperS [ Tue Feb 19, 2013 5:46 pm ]
Post subject: 
When I was tinkering in the shed, I found the reverse selector and gear controlled the amount of overthrow on both syncro hubs in one direction. Took reverse out and I had more overthrow. I controlled this by putting a “stop” on the rear of the shaft running through the box.

I also removed the pin from the shaft so that I could get it into the box. The selectros hold the pin in place once assembled.

Image

Image

Image
Author:  simon k [ Sun Feb 24, 2013 9:24 pm ]
Post subject: 
clever man... :D
Author:  justfanginaround [ Sun Aug 04, 2013 9:30 am ]
Post subject: 
well after a few weeks of stuffing around in the shed this is what we came up with. The shift "feels " fantastic :D
Image
Image

and here it is on the dyno { from early November last year }
Image
skip to about 1:15 for the noise
Author:  IndigoBlueCooperS [ Sun Aug 04, 2013 9:54 am ]
Post subject: 
Hi Justfanginaround,
Did you remove the pin from the selector shaft?
If so, do you resecure it in the shaft, or is it just resting there, held in by the selector sleeve?
Author:  justfanginaround [ Sun Aug 04, 2013 10:00 am ]
Post subject: 
the extension is stepped in to the end of the original shaft, the shaft is bored to be a press fit, the pin is a tap fit { medium bfh } and then it has a 1/8 hole through the lot with some tie wire just to make sure it won't fall out
Author:  Mick [ Sun Aug 04, 2013 10:15 am ]
Post subject: 
Nice!
Author:  IndigoBlueCooperS [ Sun Aug 04, 2013 10:39 am ]
Post subject: 
Sounds/looks good.
I like the idea of the bolt on flang rather than the weld job on mine.
I guess you could make the hole for the bolt on flange large enough to accept the pin so that you don't need to remove the pin or use the medium BFH.
Author:  justfanginaround [ Sun Aug 04, 2013 10:47 am ]
Post subject: 
We welded a 1/4 alloy plate @ 90 deg to the shift rod onto the front of the gearbox and made a bolt in slug that uses a rod box std rear seal :D if we undo the 2 bolts @ the front we can slide all of the shift rail out through the nose.
Author:  69k1100 [ Sun Aug 04, 2013 11:18 am ]
Post subject: 
You could run an electric reverse if you get tired of pushing it around :p
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