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SmoothPierre
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OIF center stand spring?
#816470 07/17/20 3:32 am
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'71 A65 needs a spring for the main stand. Parts book says this is 82-4671. Oddly enough, that's the same part called for in my T150 parts catalog.
Odder still, the part for the '72 T120 is different, 83-3793. Only difference I can see between the frames is that Triumph added some bracing at the ends of the cross piece, to which the stand lugs are welded.
The other difference is that the stand on the Bonnie will not work on the A65, bike goes up, stand goes past the stop, bike comes down with the stand facing forward. At least I found a stand which stops, barely. The stand still ends up at a crazy forward cant. These are supposed to be the same part, judging by identical catalog numbers. Often the BSA part number is different for the same part, I guess they could use the same number for a slightly different part?
Anyway, what's the deal with the return spring?
Thanks


Stepping on others doesn't make you stand tall.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"
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Re: OIF center stand spring?
DavidP #816608 07/18/20 4:32 am
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I guess nobody knows


Stepping on others doesn't make you stand tall.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"
Re: OIF center stand spring?
DavidP #816611 07/18/20 5:28 am
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What is it that you need to know?

My ‘72 TR6R has 3793 for the spring and 2627 for the centre stand.

The’71/‘72 bikes were the tall seat bikes weren’t they? For long legged riders. The seat height was reduced but I don’t know how or when ( mebbe through ‘72). Perhaps the T150 was built for the revised shorter seat.

I can measure something for you. I’m not a robot!


'51 C11 in a '54 C10L frame. Back on the road...
'70 Triumph Trophy 500. Next on the bench for a refresh!
'72 Triumph Tiger 650. Back on the road...
Re: OIF center stand spring?
DavidP #816618 07/18/20 9:17 am
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i fitted a later C stand to my 71, it did not end up with a forward extreme cant, perhaps your frame stops or the stand stops are knackered. later T stands are too long I had to have mine shortened an inch.
i dunno about spring numbers.


71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: OIF center stand spring?
DavidP #816624 07/18/20 11:31 am
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The 71/72 triumph stand I bought for my 71 Thunderbolt fits fine, I’ve added bracing to the frame support as they are known to break.... and mine had started to. I’ve also started putting stops in off these braces to limit the wear on the stand stops and keep the centre stand even more up right. So far the front wheel stays on the ground like this... and it’s easy to get on and off. Not yet fitted a spring though.


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
71’ A65 823 Thunderbolt (undergoing restoration)
67’ D10 sportsman (undergoing restoration)
68’ D14 trials (undergoing transformation)

Re: OIF center stand spring?
DavidP #816658 07/18/20 5:53 pm
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T150 frame is pretty much the same as the dry frame twins. Same center stand too. Pretty easily deployed, but the 19" rear wheel barely clears the ground.
I don't know what spring is on the Bonnie's stand, it came attached to the stand I bought at Barber.
I've ordered the number in the BSA parts catalog. Maybe they forgot to change the number from the previous year? We'll see what shows up in the mail next week.


Stepping on others doesn't make you stand tall.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"
Re: OIF center stand spring?
Ginge #816664 07/18/20 7:04 pm
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Originally Posted by Ginge
The’71/‘72 bikes were the tall seat bikes weren’t they? For long legged riders. The seat height was reduced but I don’t know how or when ( mebbe through ‘72).

The low seat frame was introduced during the 1972 model season from CG50414 so there were high and low seat 1972 650 Triumphs.

The modification involved around 80 components having to be changed including the centre stand (from F1/83-4615 to F1/83-2627) however there is no mention of a change of stand spring.

Re: OIF center stand spring?
DavidP #816695 07/18/20 10:14 pm
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So long as the spring is a barsteward to put on it will probably work, mine took two people , a nights solid drinking , a bag of loose change , a vice, pliers and extreme terror . Have fun. First time job, I dont plan on practicing.

Last edited by gavin eisler; 07/18/20 10:15 pm.

71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: OIF center stand spring?
DavidP #816698 07/18/20 10:27 pm
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Once the centre stand is fitted you can exceed sphincter tension by grinding it down , mind how ye go on left handers , if theres somethin coming ,yer doomed. Might not apply for you mirror people on the land of the setting sun. Just worked it out, you will take to the verge, might be worse . If you have decent tyres and a sporting right hand you may like to leave the spring alone and just do temp stand fits for chain stuff. Its very handy for punctures and broken spokes. I keep mine on to avoid fiddling, once you grind the edge off the curve its not so bad.

Last edited by gavin eisler; 07/18/20 10:43 pm. Reason: wurdz

71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: OIF center stand spring?
DavidP #816727 07/19/20 3:54 am
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I've heard similar stories. Somehow my foot peg always grounds first, but I only have folding pegs on the rear sets I just cobbled up for the T120. And, I'm not nearly as fast as I used to be. laughing


Stepping on others doesn't make you stand tall.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"
Re: OIF center stand spring?
DavidP #816829 07/20/20 2:46 pm
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Yep, Gavin...removed the center stand on my 71 as it wasn't grinding down fast enough. Plus it was terrible to operate and twisted like a dishrag. Now in the process of grinding down the side stand


69 A65T
71 B50T
85 K100RS
54/59 A10SR
69 B44VS
71 A65FS
95 Trident
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Re: OIF center stand spring?
DavidP #816895 07/21/20 6:03 am
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Unfortunately another little detail which went into production without being totally sussed out. Being almost bankrupt is no excuse for poor engineering.
Neither is having to pay your investors before paying for proper R&D.


Stepping on others doesn't make you stand tall.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"
Re: OIF center stand spring?
DavidP #816898 07/21/20 6:16 am
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The pre oif had centre stand changes also on the lever, some looped around the silencer, some came out at 45° and were pushed lower to the ground causing them to foul.

If you can get away with it, cut the arm off and use it without. The stands often return to a higher point and clear the ground better.


... I don’t like the anchor type foot on these oif stands.


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
71’ A65 823 Thunderbolt (undergoing restoration)
67’ D10 sportsman (undergoing restoration)
68’ D14 trials (undergoing transformation)

Re: OIF center stand spring?
DavidP #817472 07/25/20 11:20 pm
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The 82-4671 spring arrived today. I was able to get it on without much difficulty. Maybe too easy, but it holds the stand up.
I might break out the old arc welder to add some metal to the stops on the frame.
Someone posted that the T140 stand was shorter. Just another thing to search for at the next swap meet.


Stepping on others doesn't make you stand tall.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"
Re: OIF center stand spring?
gavin eisler #817567 07/27/20 12:07 am
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Originally Posted by gavin eisler
So long as the spring is a barsteward to put on it will probably work, mine took two people , a nights solid drinking , a bag of loose change , a vice, pliers and extreme terror . Have fun. First time job, I dont plan on practicing.

True enough!

Installed a center spring on a "70 T100C.

I used about 18 dimes to spread the coils and still had to pry the spring to pop the SOB on.

NEVER AGAIN until next time.
SteveG


Moderated by  Allan G, Jon W. Whitley 

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