Injector stacks

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Posted · Report post

What can be used instead of buying the pricey aftermarkets?

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Posted (edited) · Report post

K&S aluminum tubing , you can try to flare it with an awl or similar tool by placing it in a slightly larger tube and rotating the awl then cutting to size. but it is hard to get consistent results . frankly the AMT set isn't that pricey when you think about the time spent making them . also there are some on ebay that are slightly cheaper than the AMT set you just have to search a little bit .you can also check out the jewelry section at Michaels ,Jo ann or other craft stores for items that may capture the look you want . hope this is helpful.

Edited by randx0

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Posted · Report post

This is another source I found by searching the answers to your question already posted on the forum. Many sizes available, VERY cheap.

http://www.alliedelec.com/search/productdetail.aspx?SKU=70078419

Thanks Bill, that is what i was looking for. $7.50 for 100 is better than $8-$10 for 8.

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Bill, those look like they would work great. Thanks. I just bought the AMT aluminum ones to replace the plastic ones in the Rat Packer kit. Paid more for those 8 than I would have for this 100. They also can be used to make good exhaust pipes.

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Posted · Report post

Good tip Bill.

Thanks.

These ferrules are available in Australia from RS Components at $12 for 100.

https://australia.rs-online.com/web/p/crimp-bootlace-ferrules/2114325/?searchTerm=211-4325&relevancy-data=636F3D3126696E3D4931384E525353746F636B4E756D6265724D504E266C753D656E266D6D3D6D61746368616C6C26706D3D5E5C647B337D5B5C732D2F255C2E2C5D5C647B332C347D2426706F3D313426736E3D592673743D52535F53544F434B5F4E554D424552267573743D3231312D343332352677633D4E4F4E4526

One thing though. If you follow Bills link it takes you to the page for 18 AWG ferrules. These are just over 1mm in diameter (1" in 1/25) which seems small to me.

For 2mm (scale 2") diameter stacks order 12 AWG ferrules or for 2 1/2mm (scale 2 1/2") order 10 AWG.

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Posted · Report post

Can this be cut down if they are to long and if so can you use just a tube cutter.

John Pol

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Posted (edited) · Report post

Good tip Bill.

One thing though. If you follow Bills link it takes you to the page for 18 AWG ferrules. These are just over 1mm in diameter (1" in 1/25) which seems small to me.

For 2mm (scale 2") diameter stacks order 12 AWG ferrules or for 2 1/2mm (scale 2 1/2") order 10 AWG.

Correct, but the same website has a wide variety of sizes for various scales and applications.

Scroll down that page for more sizes.

Edited by Ace-Garageguy

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Posted (edited) · Report post

Can this be cut down if they are to long and if so can you use just a tube cutter.

John Pol

A tube cutter tends to crimp the cut ends. A 32TPI razor saw might work better for you.

Edited by Ace-Garageguy

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Posted · Report post

I swear competition resin sells them, fairly inexpensive, but I can't seem to find them on his site. I know they are there somewhere... any help?

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Posted · Report post

Best way to cut them down is to find a rod that will fit snugly inside them and then using a block so as not to crush the flare roll a knife backwards and forwards at the point where you want to cut.

I knew there were other sizes Bill. I just didn't want someone to click and order without checking the size.

I just got a bag of 10AWG delivered and they are 3mm internal diameter not 2 1/2 as I state above (which I calculated from a wire sizing chart that gave the cross sectional area of various size wire). Obviously there's a bit of slack allowed for an easy fit over the wire.

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Posted · Report post

I knew there were other sizes Bill. I just didn't want someone to click and order without checking the size.

Yes sir, I assumed you knew...I was just clarifying more in case someone didn't think to scroll down on that page. :)

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Posted · Report post

sooooooo if I was to go out and buy a bag of these today from home depot to replicate these....

post-5121-0-41727900-1387462667_thumb.jp

what would be the ones you recommend?

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Posted · Report post

Probably 12 or 14 AWG but without actually having had any in my hands to measure I couldn't be absolutely sure.

I'd guess those stacks would be 2 1/2 inch diameter meaning you want 2 1/2mm inside diameter ferrules.

If you can get them from an actual store (rather than the interweb) then you have the luxury of being able to take a ruler with you to measure them before you buy them.

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Posted (edited) · Report post

Do they sell these local at places like lowes or home depot?

Edited by grt222

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Posted · Report post

sooooooo if I was to go out and buy a bag of these today from home depot to replicate these....

attachicon.gifyeah-its-got-a-hilborn-injected-race-hemi.jpg

what would be the ones you recommend?

I dont think they are available at Home depot, they are commonly used in electronic computer line wiring applications.

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Posted · Report post

Check with Joe Cardoza , he is a member here ! He just sent me a text with pictures of some beauties that he now offers ! Reasonably priced too !

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Posted · Report post

Thanks Oldman!

Here are the Prototypes of my Velocity Stacks (2pcs.) I glass beaded the bottom stem so you can see the top flare pc. The top flare pieces will come in plain Aluminum or anodized in Red/Blue or Gold. They will be available some time next year!

post-9039-0-36160400-1387601906_thumb.jp

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Posted · Report post

Nice and tall. That's the problem with using ferrules, they are a bit short.

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Posted (edited) · Report post

One thing to bear in mind when building a model is what kind of engine it has and what kind of racing it would actually do. If you go beyond building for a 'look' and not caring about how things work, just remember that injector stacks are tuned to a particular rev range on a particular engine, and show up in the real world in any length imaginable.

Short stacks will usually be on an engine that winds tight and makes its peak power at high RPM, like the small-displacement Cosworth Ford V8. Longer stacks help low-end torque, so you'll tend to see them more on drag-racing engines that need grunt off the line. BUT...that's not always true. Just do a google image search for "hilborn injection".

You might also notice that some racing engines use staggered stacks, to broaden the torque curve.

1176244071_8410.f_magi_grs.jpg

Edited by Ace-Garageguy

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Well only made 4 prototypes to see how they look, There was a lot of opps... on other looks. But I like the way these came out. Now is for 1/24and 1/25 scale.

Here are a couple more pic's

post-9039-0-68630000-1387736472_thumb.jp

post-9039-0-86997100-1387736515_thumb.jp

post-9039-0-59615000-1387736536_thumb.jp

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Posted · Report post

Finding decent short stacks for high revving motors (especially of the road-racing variety) is the problem if you use auto modeling after market pieces.

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Now here is a six cylinder I'm working on, I used the top flare of the stacks. I made the manifold as well....

post-9039-0-29899400-1387764475_thumb.jp

post-9039-0-98453100-1387764520_thumb.jp

post-9039-0-57173200-1387764543_thumb.jp

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