Author Topic: Tri pod troubles :(  (Read 3236 times)

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Gadge

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Tri pod troubles :(
« on: November 07, 2015, 02:25:01 PM »
Ok this is a question for anyone who's fitted these upgraded tripods to their car. I've followed the instructions very carefully - particularly the part that says "once fitted manoeuvre the driveshaft between one of the slots in the joint" ........ But for some reason I just can't do that as the driveshaft seems too long  :-X it doesn't seem to matter how high the arm is and I've pushed the driveshaft into the gearbox as far as I can and still nothing. Has anyone else had this problem? Are BIS driveshafts longer? Have a look at the photo below and see what you all think.

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AvB

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Re: Tri pod troubles :(
« Reply #1 on: November 07, 2015, 02:57:01 PM »
Ok this is a question for anyone who's fitted these upgraded tripods to their car. I've followed the instructions very carefully - particularly the part that says "once fitted manoeuvre the driveshaft between one of the slots in the joint" ........ But for some reason I just can't do that as the driveshaft seems too long  :-X it doesn't seem to matter how high the arm is and I've pushed the driveshaft into the gearbox as far as I can and still nothing. Has anyone else had this problem? Are BIS driveshafts longer? Have a look at the photo below and see what you all think.



Its very strange. Researching i found that the BIS Gearbox and the Aircooled model are the same, so the drive shafts must be the same as well. Ive seen the photos and you lacking a very tiny measure to fit in the drive shaft into the metal case. Talking to my uncle now, which is a mechanic , he tell's me that a way to do it is to push the engine a little in the opposite direction so that the drive shaft will fit in. Before you push the engine remember to put the tripod, the plastic tube and the rubber boot so when you push the engine and the drive shaft fits in everything will be in place. Hope it helps.
« Last Edit: November 07, 2015, 02:59:21 PM by AvB »

Piotross

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Re: Tri pod troubles :(
« Reply #2 on: November 07, 2015, 04:00:46 PM »
BIS has only other main gears of gearbox, driveshafts should be the same. Please try to push the engine a little in the opposite direction. You can try to loosen a bottom rubbers of gearbox and try do it.

thepuddlejumper

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Re: Tri pod troubles :(
« Reply #3 on: November 07, 2015, 06:50:53 PM »
I had the same problem fitting them to my Gamine, it has 126 engine and gearbox fitted. I had to loosen off the rear swing arm to get the movement to get the driveshaft passed the tri cover. I tried removing the gearbox mount to increase movement but eventually had to loosen the rear swing arm.

Ralph

Gadge

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Re: Tri pod troubles :(
« Reply #4 on: November 07, 2015, 07:34:10 PM »
Yeah not really impressed tbh the instructions don't really state that you need to remove swing arms or gearboxes to get them in. I'm pretty sure if I just loosen the gearbox mounts it may give me the clearance I need but what bothers me the most us that if I need to change a wheel bearing or seal I'll have to undo the gearbox or swing arms  :-X
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AvB

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Re: Tri pod troubles :(
« Reply #5 on: November 07, 2015, 08:12:17 PM »
Yeah not really impressed tbh the instructions don't really state that you need to remove swing arms or gearboxes to get them in. I'm pretty sure if I just loosen the gearbox mounts it may give me the clearance I need but what bothers me the most us that if I need to change a wheel bearing or seal I'll have to undo the gearbox or swing arms  :-X

Yes, but normally wheel bearings and seal's last a couple of years, depending on your use of the car. Upload photos when you complete the work :D

thepuddlejumper

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Re: Tri pod troubles :(
« Reply #6 on: November 07, 2015, 08:38:27 PM »
Gadge, I replaced mine back in 1978 after returning from the launch of the then new 500. I went through 3 sets of the rubber flex drives over the 3000 mile trip in my Gamine. That's why I replaced them with the tri's. So touch wood that's almost 8 years trouble free. The problem could be the way the rear swing arms have been shimmed, I had removed mine during the restoration. If I remember correctly it was only out by about 3mm. I did consider cutting the green shroud locally and bending back to allow the drive shaft to fit in but decided to move the swing arm. Best of luck, lets know how you resolve the problem.

Ralph

Craig

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Re: Tri pod troubles :(
« Reply #7 on: November 08, 2015, 10:42:30 AM »
I had exactly this problem when fitting a set of tripod joints, but to 500's.

1 car was fine the other too tight, it seems to depend on how the a frames are set up.

I tried moving the engine and gearbox across but wasn't able to get enough movement, especially when you have to put the little rubber bit in the end of the driveshaft aswell.

The way I do it now, and have done the last few times I fit the engine and box is to fit one side as I have enough wriggle room, then the other side I take the drum off, loosen the 4 bolts that hold the bearing carrier on which then means I can move the whole bearing unit out about 5-10mm which is enough room to pop the driveshaft in. Depending on how much space you need you may need to pop the shoes off, once you got the hang of it, it only takes an extra 10 mins to do.

Craig

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Re: Tri pod troubles :(
« Reply #8 on: November 08, 2015, 12:10:16 PM »
 Makes me wonder if you experiencing these problems because of the lowered suspension and hence the different angle of the arms.
 I have managed to fit a hub the wrong way round in the past which would cause the same issue :$
 
1972 Fiat 500
1980 Fiat 126

Gadge

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Re: Tri pod troubles :(
« Reply #9 on: November 08, 2015, 02:11:25 PM »
It is a strange one I must admit. I've come to the conclusion that I'll have to undo the gearbox mounts and using a jack to support it I can manoeuvre it one way way and then the other. I don't think it's down to the lowering of it as the swing arms hang down and I did try moving the suspension up and down with a jack but the angles were all the same no matter how high or low the arm was.

The arm adjustment may be the culprit as I have just replaced the original arms for aircooled ones so this could be the reason especially as one side is more out than the other.

Just a quick question about those little rubber inserts at the end of the drive shaft. Can I reuse the original springs or does it have to use the rubber ones?
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thepuddlejumper

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Re: Tri pod troubles :(
« Reply #10 on: November 08, 2015, 06:16:44 PM »
I believe the rubbers are used to prevent damage to the internals of the try, just in case a spring breaks. It's not the first time I've found Brocken springs. By the way I found it really tricky to keep the rubbers in during fitting. That's a good idea loosening the hub, I will do this if I have the same problem when fitting tri's to my 126

Ralph
« Last Edit: November 08, 2015, 06:18:23 PM by thepuddlejumper »

drcdb15

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Re: Tri pod troubles :(
« Reply #11 on: November 09, 2015, 09:39:58 PM »
All the alignment problems you folks seem to be having with fitting these clever little gizmos reminds me of an issue I had with my Jag X-type a year or so back. I generally get my tyres done at Millers in Malvern, Worcs, with whom I have long done business and who are imho that hen's tooth of the motor trade, completely trustworthy. They also have the latest hi tech Hunter laser alignment stuff, plus they are quite happy to share 'inside' information with you (or at least, they always have with me).

So, along I trundled with my nice shiny expensive Jaguar (yes, I know it's a Mondeo - what's worse, the engine is from a Transit!!) Anyway, allow me my dreams...

Please use all your shiny impressive high techy kit to sort my wheels, say I. Sharp intake of breath - your rear toe-in's all out, says they. Well adjust it, Dear Liza, says I. Can't be done, Guv', say they.

Long story short, only way to adjust is to remove half the rear suspension, fit shims on a trial and error basis, reassemble it all, then measure again. And if it's wrong, guess what? That's right - remove half the rear suspension, fit shims on a trial and error basis, reassemble it all, then measure again. And if it's still not right...

What are my options, ask I. Leave well alone, says Mr Miller. But the car's never been in a shunt, no damage that I know of (I've had it for yonks and was second owner, know the history etc etc). How can it be, this distortion on the bodywork?

Answer: that's how it left the factory - asymmetric, with discrepancies in geometry of several millimetres between the two sides. But what, sayeth I, of all the dancing robots of old Fiat adverts fame? You think how bad it would have been with*out* them, says Mr Miller.

Now i can't help but wonder if all you avid tripod fitters are assuming that your little Fiat 126 body is symmetrical, and conforms to perfect geometry and symmetry? Because if my 2004 Jag doesn't, it seems to me highly probable that the manufacturing tolerances of a 1980-something low cost baby Fiat will be, shall we say, somewhat variable. And what works and aligns fine on one car may be the proverbial absolute female dog on another.

In similar vein, I asked about door alignment on my Reliant Scimitar. I discovered Reliant used three different door moulds to make the "same" door panel, and each one was different...

So don't dis Piotr for poor instructions, and don't blame the makers of the tripods - we easily forget that by the superb standards of modern car production, the assembly standards typical of the 1980s were absolutely appalling!

Anyway, isn't skinning our knuckles and getting cuts and bruises trying to make something fit why we have these cars in the first place ?

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