Honda CB750 Sandcast

Short throttle springs

markb · 39 · 11889

markb

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For the #97 carbs I'm planning on using 28 tops, 5mm cables and short springs and slides.  I scored on a set of carbs that has everything I need except it was missing one of the springs.  Anyone have one they could sell me?  I think the part number is 16185-300-004.  There is a company in town who can make some for me but the minimum order is $300 so pretty much the same price for 1 or 25.  I just hate to spend $300 when I only need one.  So the other option would be if anyone needs/wants some I could have extras made. 
Mark B
1969 CB750 sandcast #97 restored - Sold Restoration thread link
1969 CB750 sandcaxt #576 - Sold
1969 CB750 sandcast #1553 - Sold
1969 CB750 sandcast #1990 - Sold
1969 CB750 sandcast #5383 restored - Sold Restoration thread link
1970 CB750 K0 restored - Sold
2010 H-D Tri Glide Ultra Classic (Huh?)


Sgt.Pinback

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« Last Edit: February 26, 2014, 10:53:45 am by Sgt.Pinback »
Cheers, Uli (Leonberg, Germany)



markb

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That's right Steve.  It's like #36 only shorter (approximately 114mm long).
Mark B
1969 CB750 sandcast #97 restored - Sold Restoration thread link
1969 CB750 sandcaxt #576 - Sold
1969 CB750 sandcast #1553 - Sold
1969 CB750 sandcast #1990 - Sold
1969 CB750 sandcast #5383 restored - Sold Restoration thread link
1970 CB750 K0 restored - Sold
2010 H-D Tri Glide Ultra Classic (Huh?)


Steve Swan

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keep asking around, Mark.  somebody should have a single 28 spring, i would think.  i used to have a couple extra, but i'm pretty sure i gave them away.  i'll look through my stuff, but i can't promise i've got one.


markb

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A 28 spring!  That's a good name for them.  Thanks.
Mark B
1969 CB750 sandcast #97 restored - Sold Restoration thread link
1969 CB750 sandcaxt #576 - Sold
1969 CB750 sandcast #1553 - Sold
1969 CB750 sandcast #1990 - Sold
1969 CB750 sandcast #5383 restored - Sold Restoration thread link
1970 CB750 K0 restored - Sold
2010 H-D Tri Glide Ultra Classic (Huh?)


markb

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I'm still looking for a 28 spring.  Anyone?
Mark B
1969 CB750 sandcast #97 restored - Sold Restoration thread link
1969 CB750 sandcaxt #576 - Sold
1969 CB750 sandcast #1553 - Sold
1969 CB750 sandcast #1990 - Sold
1969 CB750 sandcast #5383 restored - Sold Restoration thread link
1970 CB750 K0 restored - Sold
2010 H-D Tri Glide Ultra Classic (Huh?)


markb

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If I decide to get some of these springs made does anyone else need some?
Mark B
1969 CB750 sandcast #97 restored - Sold Restoration thread link
1969 CB750 sandcaxt #576 - Sold
1969 CB750 sandcast #1553 - Sold
1969 CB750 sandcast #1990 - Sold
1969 CB750 sandcast #5383 restored - Sold Restoration thread link
1970 CB750 K0 restored - Sold
2010 H-D Tri Glide Ultra Classic (Huh?)



kmb69

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Mark,

You can count me in for several sets. Just guessing, you can probably have 1000 made for the same price as 50.

Keith


markb

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Is anyone else interested in some?  Once I know the quantity I'll let everyone know the price and get some ordered.
Mark B
1969 CB750 sandcast #97 restored - Sold Restoration thread link
1969 CB750 sandcaxt #576 - Sold
1969 CB750 sandcast #1553 - Sold
1969 CB750 sandcast #1990 - Sold
1969 CB750 sandcast #5383 restored - Sold Restoration thread link
1970 CB750 K0 restored - Sold
2010 H-D Tri Glide Ultra Classic (Huh?)


DW69K0

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Mark,
Count me in for several sets.
Thanks,
Duane



markb

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Looks like I've got a enough to get the price under $8 each.  Anyone else want any.  Might be able to shave a little more off the price.  Before I order I want to bring an actual spring for the manufacturer to look at.  Sor far I've just given them the exact dimensions and they said they could do it but I want them to confirm they can duplicate them before I place the order.  I'm going to try to get there this week and it would take 30 days.
Mark B
1969 CB750 sandcast #97 restored - Sold Restoration thread link
1969 CB750 sandcaxt #576 - Sold
1969 CB750 sandcast #1553 - Sold
1969 CB750 sandcast #1990 - Sold
1969 CB750 sandcast #5383 restored - Sold Restoration thread link
1970 CB750 K0 restored - Sold
2010 H-D Tri Glide Ultra Classic (Huh?)


markb

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I was about to place the order but after a couple of discussions with members I want to make sure I have the correct dimensions.  I've got one complete set and one set of three 28 springs.  The set of three has a free length of 112-115mm (they've been in the carbs sitting on a bench for probably 40 years).  The other set measures 125-130mm.  (By the way, they all had 15 coils and the wire diamter was .9mm).  Some later ones I have measure 140-145mm and have a wire diameter of 1mm and 22 coils.  One of the guys thinks the 28 springs were 20mm shorter than the later springs.  Some of all of these may have relaxed and are therefore shorter.
Does anyone know the original length of the 28 springs?  Or the difference in the length of the 28 and later springs?  Does anyone know the length of the later springs or have some they could measure?  Right now I'm thinking that somewhere around 125mm is close to the original 28 length but if they were a bit on the long side it probably wouldn't hurt.  Any input is appreciated.
Mark
Mark B
1969 CB750 sandcast #97 restored - Sold Restoration thread link
1969 CB750 sandcaxt #576 - Sold
1969 CB750 sandcast #1553 - Sold
1969 CB750 sandcast #1990 - Sold
1969 CB750 sandcast #5383 restored - Sold Restoration thread link
1970 CB750 K0 restored - Sold
2010 H-D Tri Glide Ultra Classic (Huh?)