Couple of silly? questioms - GT550

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Coyote
Moto GP
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Suzuki 2-Strokes: GT550x2, GT750, GS1000
Location: Tulsa, Oklahoma

Couple of silly? questioms - GT550

Post by Coyote »

First off is the choke lever detent spring and ball. Mine are missing and the spring is obsolete. The ball is available but the spring is not. Anyone have a spare spring or one they could measure and post the OD and length? I'm going to break off a tooth pick for the length and go to the hardware store. I don't have a lot of hope though as it is really small.
Below is an exploded view of my stock 76 headlight. I don't have the now obsolete lamp. I have everything pictured except for the lamp itself. I need to know if anyone has fitted a standard H-4 halogen in this type of bracket. I seems like the extra cage just ahead of the bucket would be in the way, but I'm not sure The headlight pigtail on my harness is a standard small plastic connector like many others on the bike. It does not have the large 3 prong socket to fit a standard modern bulb so I would have to splice that in -- if I can even find one. Anyone done the conversion to H-4 on this type of bucket? Anyone have a stock 76 lamp? It appears to be a real shallow bulb.

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I was born with nothing and still have most of it left.

.
1978 GS1000C
1976 GT550 ongoing money pit.
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jabcb
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Re: Couple of silly? questioms - GT550

Post by jabcb »

GT550 & GT750 use same headlight.

Old topic on using Suzuki H4 headlights:
viewtopic.php?f=9&t=5992&p=115857&hilit ... ht#p115857
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
yeadon_m
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Suzuki 2-Strokes: GT380B, GT550B, GT750A, GSX1400

Re: Couple of silly? questioms - GT550

Post by yeadon_m »

Coyote,

Just measured one of mine: 13mm x 4.5mm OD.

I think you can get one here, look for compression spring:

http://www.ebay.co.uk/itm/3-96mm-OD-4mm ... 4d25256a81" onclick="window.open(this.href);return false;

Cheers,
Mike
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Coyote
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Joined: Tue Oct 21, 2008 2:41 pm
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Suzuki 2-Strokes: GT550x2, GT750, GS1000
Location: Tulsa, Oklahoma

Re: Couple of silly? questioms - GT550

Post by Coyote »

4.5mm. That's the killer. Went to a hardware store yesterday and bought the smallest compression spring they had. It is .188 or 4.77mm. Won't quite go. I'm half tempted to open up the hole. Going to check another hardware store today. The problem in the states is nobody speaks metric let alone stock it.
4.5mm? Isn't that something like a mile? :?
I was born with nothing and still have most of it left.

.
1978 GS1000C
1976 GT550 ongoing money pit.
yeadon_m
Road race school
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Country: UK
Suzuki 2-Strokes: GT380B, GT550B, GT750A, GSX1400

Re: Couple of silly? questioms - GT550

Post by yeadon_m »

The hole is quite a bit bigger than the OE spring so I'm pretty sure you can fit the 4.77mm! and if not, just ream it out a fraction of a mm
Mike
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jabcb
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Re: Couple of silly? questioms - GT550

Post by jabcb »

BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
User avatar
Coyote
Moto GP
Posts: 3404
Joined: Tue Oct 21, 2008 2:41 pm
Country: USA
Suzuki 2-Strokes: GT550x2, GT750, GS1000
Location: Tulsa, Oklahoma

Re: Couple of silly? questioms - GT550

Post by Coyote »

Too bad it's so long or it might actually be worth the price. We have all cut springs and we all know they don't work so hot once cut as you loose the flat end.
I went to Ace yesterday and bombed out again. 3/16 is the smallest they carry and is about .008 too large for he hole. I have mixed thoughts about opening the hole to .187 (3/16). That's the same diameter as the ball. The silliest things go obsolete Suzuki probably has a bushel basket full of those springs somewhere collecting dust.
I was born with nothing and still have most of it left.

.
1978 GS1000C
1976 GT550 ongoing money pit.
User avatar
jabcb
Moto GP
Posts: 4311
Joined: Mon Dec 13, 2010 4:32 pm
Country: USA
Suzuki 2-Strokes: 69 T350 thru 75 GT750
Location: southwestern Pennsylvania

Re: Couple of silly? questioms - GT550

Post by jabcb »

Interesting find….
All-Rite Spring has an easy-to-use tool for designing springs.
http://www.allrite.com/inventory/design ... calculator

standard spring CO17620807008
has closed ends , 4.572mm OD , 14.1mm free length , 5.1mm solid height
http://www.allrite.com/search-inventory ... w=category

They might have another spring that's even a better match.
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
User avatar
Coyote
Moto GP
Posts: 3404
Joined: Tue Oct 21, 2008 2:41 pm
Country: USA
Suzuki 2-Strokes: GT550x2, GT750, GS1000
Location: Tulsa, Oklahoma

Re: Couple of silly? questioms - GT550

Post by Coyote »

DANG! I found the exact spring online for $3.50. Problem is minimum quantity is 6. Finding 5 others that need one is nearly impossible.
Perfect. .180 diameter, .500 or .563 overall length. .024 music wire. http://www.springsfast.com/stock-compre ... prings.php" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;
I was born with nothing and still have most of it left.

.
1978 GS1000C
1976 GT550 ongoing money pit.
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