7x14 to 7x16 Rebuild

[GrifterGuru]

So that’s the kind of stingray you’re referring to?

I was thinking some new age BSA/Norton/Trumpet hybrid with sketchy rake angles.

Raleigh Chopper is NOT a Stingray It is a Raleigh Chopper.

It was designed and built as a direct competitor to the Schwinn Stingray 20/16 platform with a completely different frame design but using 20/16 wheels.

 

[RaisedByWolves]

Raleigh Chopper is NOT a Stingray It is a Raleigh Chopper.

It was designed and built as a direct competitor to the Schwinn Stingray 20/16 platform with a completely different frame design but using 20/16 wheels.

How the hell did I get off onto Stingrays?

Oh well, welcome to my world.

 

[SouthernChap]

How the hell did I get off onto Stingrays?

Oh well, welcome to my world.

Oooh, you've poked the bear there, my friend.

There's nothing more teeth-grindingly annoying to someone who knows and loves a niche bit of kit in, out, and upside down, especially a bit of kit that has had a great deal of (unwarranted in that person's view) negative comment, than referring to their object of fascination in relation to something that they feel is an inferior product.

Don't think I'm cruelly mocking GG either.

You try telling me that my Niche Zero coffee grinder "is just like the De'Longhi grinder I bought from Walmart" and you'll hear my howls of outrage clear across the Atlantic.

To be fair, I don't understand the fella's love for the bike (I owned one as a 10 year old and hated it; never happier than when it was replaced with a Raleigh Arena a couple of years later) but then I only ever really knew bikes as a rider rather than as an engineer.

 

[RaisedByWolves]

Oooh, you've poked the bear there, my friend.

There's nothing more teeth-grindingly annoying to someone who knows and loves a niche bit of kit in, out, and upside down, especially a bit of kit that has had a great deal of (unwarranted in that person's view) negative comment, than referring to their object of fascination in relation to something that they feel is an inferior product.

Don't think I'm cruelly mocking GG either.

You try telling me that my Niche Zero coffee grinder "is just like the De'Longhi grinder I bought from Walmart" and you'll hear my howls of outrage clear across the Atlantic.

To be fair, I don't understand the fella's love for the bike (I owned one as a 10 year old and hated it; never happier than when it was replaced with a Raleigh Arena a couple of years later) but then I only ever really knew bikes as a rider rather than as an engineer.

Speaking of teeth grinding….


I put my sanka through both of those coffee grinders and it tasted the same from each.

 

[dabear3428]

Speaking of teeth grinding….


I put my sanka through both of those coffee grinders and it tasted the same from each.

yes and the worst part is that it tasted like Coffee uhhhhh!

 

[GrifterGuru]

Oooh, you've poked the bear there, my friend.

There's nothing more teeth-grindingly annoying to someone who knows and loves a niche bit of kit in, out, and upside down, especially a bit of kit that has had a great deal of (unwarranted in that person's view) negative comment, than referring to their object of fascination in relation to something that they feel is an inferior product.

Don't think I'm cruelly mocking GG either.

You try telling me that my Niche Zero coffee grinder "is just like the De'Longhi grinder I bought from Walmart" and you'll hear my howls of outrage clear across the Atlantic.

To be fair, I don't understand the fella's love for the bike (I owned one as a 10 year old and hated it; never happier than when it was replaced with a Raleigh Arena a couple of years later) but then I only ever really knew bikes as a rider rather than as an engineer.

Its partly about a bike that I have a long interest in, but more about the people involved in the hobby who are like a large, slightly mad, extended family.

Knowing the engineering of it, how the frame was built tube by tube, the engineering and design process that led to it are all a part of the "knowledge" that is gained when you spent getting on for 25 years deeply emersed in the hobby and have muliple deep conversations surrounding the minutest detail of thing on an almost daily basis with a fellow enthusiast.

It can also be a love hate thing. You may love the subject matter but there are also days when you hate the amount of knowledge you have because of the same dumb questions being asked over and over again when the answer is simple common sense.

 

[GrifterGuru]

18/Dec/2024

By way of an update, the ELS kit I ordered has arrived, now I am just waiting to get the the wiring schematic from the seller and have to go and collect the 1100w motor kit from the sorting office (local Royal Mail office).




@SouthernChap when I get the lead-screw motor-mount and protective cover sorted out, I will let you have the details, since you already know where I plan to mount it.

 

[GrifterGuru]

Update 20/12/24

Motor Kit is now "In Hand", as is the new, blank, control panel box. Just need to modify the main case to sit over the split leadscrew before starting to build the control panel up.

Finally pulled my finger out and made the split leadscrew.

A couple small jobs to do to finish it (retention pins/key slot/pillowblock bearings) but otherwise the hardwork is done.

This is a 16TPI Imperial leadscrew that was intended for a 7x14. It has been shortened, the "joint" end has been bored to take the spigot of the stub-section and an inch of the thread has been machined off. The Metric one I have for this project will get the same treatment, so that I have both to hand.

With an ELS kit, I doubt I will use either leadscrew for screwcutting using change-gears, but the option is always going to be there.

 

[WobblyHand]

Don't understand you saying that you won't need a lead screw. On my ELS, the carriage position is changed via the lead screw and the half nuts. Basically, I have disconnected the mechanical linkage between the lead screw and the spindle. Then added an encoder to the spindle and a stepper motor to the lead screw. The linkage between the spindle and the lead screw is now electronic. What are you doing?

 

[SouthernChap]

Don't understand you saying that you won't need a lead screw. On my ELS, the carriage position is changed via the lead screw and the half nuts. Basically, I have disconnected the mechanical linkage between the lead screw and the spindle. Then added an encoder to the spindle and a stepper motor to the lead screw. The linkage between the spindle and the lead screw is now electronic. What are you doing?

@GrifterGuru isn't saying he won't need a leadscrew.

He's saying he won't need the split lead screw capability that provides the ability to more easily swap between an imperial and metric leadscrew now he has the ELS.