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 Long term project, Dyane4x4 
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Post Re: Long term project, Dyane4x4
@Jasu

Your opinion required.

If you take the splined 5th gear and run it with the 4th gear from main shaft do they "Mesh" OK????


November 25th, 2016, 12:29 pm
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Post Re: Long term project, Dyane4x4
^I'll take 5th gear out, and replace it by 4th gear. Then make an idler gear from mainshaft (3rd or 4th, they seem to have same pitch, but maybe they make some whining) ant take rear drive out with 4th gear. Quite confusing to read what I wrote, sorry if I have mislead by someway...

So, I'll just throw away anything reagarding 5th gearing, only use 5-speed gearbox with only 4 speed gears on. And take power to rear wheels from place where 5th gear used to be...


November 25th, 2016, 1:03 pm
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Post Re: Long term project, Dyane4x4
Why not....

Leave 5th gear on Main shaft with syncro/dog/fork etc.

Use Splined 5th gear as idler gear ( which is spare from from top shaft)

Use another 5th gear from main shaft for the output shaft.

I have a spare 5th gear with bush/syncro/dog etc

Ration is 1:1


November 25th, 2016, 2:23 pm
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Post Re: Long term project, Dyane4x4
subarupete wrote:
I have a spare 5th gear with bush/syncro/dog etc

I'll keep that on mind. Have spent some quality time at garage today...

Image
GS 4-speed, GSA 5-speed, LNA and Visa...

Image
Some output studs...

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LNA and GSA studs with same (bigger than earlier GS) diameter, also LNA has same bolt pattern as 2CV drive shafts. Makes living little bit easier with these...

Image
5-speed parts on Visa casing...

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5-speed parts on LNA casing...

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LNA mainshaft, plan is to make from that an idler gear. Just need to make more measurements before start to modify...

Image
Like that it could be installed. Need to cut some space for bearing, not much, but better do that with milling machine what I haven't on garage. And then install another gear under that, with maybe Land Rover output shaft and flange. Some planning is done, measured from 5-speed rear flange the drill pattern for new flange. Original is 10mm steel plate, I'm thinking to make new housing from 10mm aluminium plate, it could be strong enough for that, but of not, 10mm steel plate is next...

Both GS and GSA have 8/35 diff ratio, LNA has 8/33 and Visa 9/35. All gears inside are same on LNA and Visa, GS and GSA differs surprisingly lot, but all of them have same ratio on reverse...

Rear bearing on pinion shaft is was same on GS and LNA (62/25/25,5mm), so is on GSA and Visa (62/24,5/27,3) if I had correct measurements...

Edit: That 4-speed box is from 1015 and 5-speed box is from 1299 X3, just checked from list what was on Cats-Citroen site...


November 26th, 2016, 10:31 pm
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Post Re: Long term project, Dyane4x4
Citroen certainly had a lot of variations!

Perhaps a solution, for a compact idler gear.

Select required gear.

Bore out the centre Mill or Lathe (Case Hardened so some sparks at the start)

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Put in Roller bearing from Layshaft
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2.jpg
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Make simple shaft to fit inside Bearing thin thrust Washer at both ends, centre bolt to hold shaft
No splines required
This is how Suzuki Jimny do it :D

In you picture 6 "idler gear" thats a "lay-shaft" .


November 27th, 2016, 12:45 pm
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Post Re: Long term project, Dyane4x4
Ratios are MANY, not sure were charts came from???

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Screen Shot 2016-11-27 at 13.07.20.jpg
Screen Shot 2016-11-27 at 13.07.20.jpg [ 872.48 KiB | Viewed 1323 times ]


November 27th, 2016, 3:09 pm
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Post Re: Long term project, Dyane4x4
subarupete wrote:
Ratios are MANY, not sure were charts came from???

http://cats-citroen.com/citroen_atypes/ ... arbox.html
Looks very familiar... :roll:

subarupete wrote:
Citroen certainly had a lot of variations!

In you picture 6 "idler gear" thats a "lay-shaft" .

Trying to find right terms, not so sure every time with foreign language... :lol:


November 27th, 2016, 7:25 pm
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Post Re: Long term project, Dyane4x4
@ Trying to find right terms, not so sure every time with foreign language... :lol:
Better than my Suomi?


November 27th, 2016, 7:51 pm
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Post Re: Long term project, Dyane4x4
subarupete wrote:
@ Trying to find right terms, not so sure every time with foreign language... :lol:
Better than my Suomi?

Maybe, yes. But I have had some years to study at school (over ten). Another issue is with my brain damage, I lose some words sometimes, yesterday I tried to find a word learn, totally lost it. Even with Finnish words, not so nice when try to explain something to someone, without correct and very familiar words... Perkele...


November 28th, 2016, 1:58 pm
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Post Re: Long term project, Dyane4x4
Your descriptions are nearly always very good, but as always picture or diagram does the job, no translation required ;) .


November 28th, 2016, 2:41 pm
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