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Author Topic: Removing clutch actuating arm from spline  (Read 743 times)
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mangocrazy
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« Reply #20 on: June 22, 2021, 03:46:39 PM »

I think the notch was to ensure the only rotation was between the hardened steel clutch rod and the nylon bush rather than the bush versus the soft alloy bell housing.

Ian


Yes, I think so too. Probably so that tolerances didn't need to be too exact and the bush was physically prevented from rotating when the clutch was operated and (as you say) removing any possibility of wear of the alloy bell housing.
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1980 Lancia Beta Spider 2000 (S2FL)
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mangocrazy
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« Reply #21 on: June 22, 2021, 03:53:25 PM »

If the notch was made as a brass part with a round peg on the end a simple round hole in the bush could take the peg end on hold the bush from rotating?

Eric
I think Paul (my engineering chap) did suggest something along those lines. It would need pegs to be fabricated and a corresponding hole in the bush for it to locate into, but still doable.

Interestingly I exchanged emails with Mark Wastnidge about this part that he sells from the Betaboyz store, and a) more stock has arrived (it was sold out when I last checked) and b) the replacement part is machined, so obviously his machinist has come up with a way of doing this. I'll buy one, examine it and see if it's worth going ahead with getting a batch done, seeing as the part is actually available.
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1980 Lancia Beta Spider 2000 (S2FL)
2002 VW Transporter T4
2017 KTM Duke 690R
2008 Aprilia SL1000 Falco
1992 Ducati 888 SP3
1988 Honda VFR750F
1980 Yamaha RD350LC
mangocrazy
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« Reply #22 on: June 30, 2021, 08:30:02 PM »

Well I bought the BetaBoyz part from Mark, and the internal diameter of the sleeve is too small to fit onto the machined part of the shaft, which was a bit of a surprise. The shaft measures 19.16-19.18 mm at various points, and the machuining marks are still visible so there is little or no wear from new. The BB part has an i.d. of ~19.07 mm, whereas my tired old OE part has an i.d. of anywhere between 19.5 - 19.9 mm.

The above all relates to parts from the gearbox originally fitted to my S2FL Spider 2000. The refurbished gearbox that will be used with my rebuilt 2000 engine has its own clutch lever, shaft and bush and there is no discernable play and a very smooth action, so that will remain 'as is'.
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1980 Lancia Beta Spider 2000 (S2FL)
2002 VW Transporter T4
2017 KTM Duke 690R
2008 Aprilia SL1000 Falco
1992 Ducati 888 SP3
1988 Honda VFR750F
1980 Yamaha RD350LC
monte
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« Reply #23 on: July 03, 2021, 03:49:48 PM »

my question is not directly related to the removal of the clutch actuating arm , but rather to refitting the arm, Is the arm and spline so designed so that it can only be fitted in one predetermined position ?
I have had the clutch replaced recently and since then the clutch pedal seems to be sitting a little high and yet there is no further adjustment available on the cable, which prompts me to wonder is the arm in the correct position, any advice would be most welcome.
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1984 Beta Coupe VX
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monte
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« Reply #24 on: July 03, 2021, 03:53:31 PM »

I should have indicated my question is in relation to a Beta coupe not a Montecarlo
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1984 Beta Coupe VX
1985 Beta Coupe IE
1980 Montecarlo Spyder
1989 Integrale HF 16V
1989 Thema 2000IE
1991 Thema 2000IE
rossocorsa
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« Reply #25 on: July 03, 2021, 03:56:49 PM »

my question is not directly related to the removal of the clutch actuating arm , but rather to refitting the arm, Is the arm and spline so designed so that it can only be fitted in one predetermined position ?
I have had the clutch replaced recently and since then the clutch pedal seems to be sitting a little high and yet there is no further adjustment available on the cable, which prompts me to wonder is the arm in the correct position, any advice would be most welcome.

As best as I can recall it will only go on in one position
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Nigel
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« Reply #26 on: July 03, 2021, 05:12:28 PM »

Correct Alan.
It has a master spline.
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1984 2.0 Carb HPE [ex Aus] Silver..turning to Grey Finanza.
2007 Mazda 6 2.3 [current daily, highly recommended]
The past:
1980 2.0 HPE White in South Africa [hope it survives!]
1976 1.6 Coupe Lancia Blu [PFG 76R] [probably deceased]
oh,and an Uno Turbo 1997 also in SA [stolen,never recovered]
monte
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« Reply #27 on: July 03, 2021, 07:11:51 PM »

Grand , thanks, while it seemed to be the logical thing, I wondered
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1984 Beta Coupe VX
1985 Beta Coupe IE
1980 Montecarlo Spyder
1989 Integrale HF 16V
1989 Thema 2000IE
1991 Thema 2000IE
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