Cheaper rear sprockets for Armstrongs

An area for our suppliers to tell us about new products/ offers or trading news.
User avatar
Yoof
Posts: 1208
Joined: Mon Jul 12, 2010 8:42 pm
Location: West Yorkshire
Location: Huddersfield

Cheaper rear sprockets for Armstrongs

Post by Yoof » Sat Jun 28, 2014 9:41 pm

Looked through the JT sprocket catalogue at work and they have a section with sprocket dimensions.
Turns out the rear sprocket is the same as one fitted to early Husqvarna TE 500 and WR 125 1983-84.
These are however, 48 tooth and not the std 47 tooth. But one tooth on the rear makes very little difference to gearing (down slightly). I'm running one of these with a 18 tooth front and it seems great for road use (103 links).
The part number is JT223 and they come in 48t and 53.
They come in ally and carbon steel versions.
A steel one is Ă‚ÂŁ22.83 on ebay posted.
The only downside is they are designed for countersunk bolts so I just flipped it over.


Image
0 x
MT560e
BMW R75/5
Honda CB250rs
MZ TS250
BSA M20

User avatar
Bunker
Site Admin
Posts: 3488
Joined: Mon Oct 06, 2008 8:42 pm
Location: Newbury, Berkshire

Re: Cheaper rear sprockets for Armstrongs

Post by Bunker » Sat Jun 28, 2014 10:10 pm

Nice one Nick.
0 x
HD MT500e 'Bunk'
HD MT604e MTourer project


You don't need a parachute to skydive. You only need a parachute to skydive twice.

deadgrass
Posts: 412
Joined: Fri Apr 29, 2011 9:24 pm

Re: Cheaper rear sprockets for Armstrongs

Post by deadgrass » Sun Jun 29, 2014 6:23 am

good find nick, any idea if there one in the book that fits the 350 back wheel ?.
dave.
0 x

User avatar
bth2bth2
Posts: 4226
Joined: Sun Jun 07, 2009 8:45 am
Location: Blackpool

Re: Cheaper rear sprockets for Armstrongs

Post by bth2bth2 » Sun Jun 29, 2014 8:10 am

billiant nick. i know where my next one is coming from.


brian
0 x
Slowly slowly catchy monkey.............
CBR 900rrs , zrx1100.in green gone but not forgotten.....mt500 in green ,stolen and abused but still alive.......cos one day , all bikes will be this slowwwwwww

User avatar
Yoof
Posts: 1208
Joined: Mon Jul 12, 2010 8:42 pm
Location: West Yorkshire
Location: Huddersfield

Re: Cheaper rear sprockets for Armstrongs

Post by Yoof » Sun Jun 29, 2014 8:52 am

deadgrass wrote:good find nick, any idea if there one in the book that fits the 350 back wheel ?.
dave.
Send me the dimensions Dave and i will have a look.
Inside diameter, hole PCD, how many holes and hole dia.
0 x
MT560e
BMW R75/5
Honda CB250rs
MZ TS250
BSA M20

User avatar
ellrider
Posts: 4338
Joined: Sat Jan 17, 2009 12:28 am
Location: Llanelli

Re: Cheaper rear sprockets for Armstrongs

Post by ellrider » Sun Jun 29, 2014 1:07 pm

deadgrass wrote:good find nick, any idea if there one in the book that fits the 350 back wheel ?.
dave.
Dave, JTR16, these sprockets fit but they only do 40,41 and 44 teeth, I use the 44 and go down one on the front to compensate for it.

http://www.jtsprockets.com/catalogue/sprocket/JTR16" onclick="window.open(this.href);return false;

The front is a JTF402 http://www.jtsprockets.com/catalogue/sprocket/JTF402" onclick="window.open(this.href);return false;

Mark
0 x
Be who you are and say what you feel because those that
matter don't mind and those that mind don't matter!

gronk
Posts: 465
Joined: Sun Apr 25, 2010 12:57 pm
Location: sandbach

Re: Cheaper rear sprockets for Armstrongs

Post by gronk » Sun Jun 29, 2014 2:57 pm

Good find yoof. I've just ordered one off that site.
0 x
KEEP IT GREEN

deadgrass
Posts: 412
Joined: Fri Apr 29, 2011 9:24 pm

Re: Cheaper rear sprockets for Armstrongs

Post by deadgrass » Sun Jun 29, 2014 3:46 pm

ellrider wrote:
deadgrass wrote:good find nick, any idea if there one in the book that fits the 350 back wheel ?.
dave.
Dave, JTR16, these sprockets fit but they only do 40,41 and 44 teeth, I use the 44 and go down one on the front to compensate for it.

http://www.jtsprockets.com/catalogue/sprocket/JTR16" onclick="window.open(this.href);return false;

The front is a JTF402 http://www.jtsprockets.com/catalogue/sprocket/JTF402" onclick="window.open(this.href);return false;

Mark
ahh, cheers for that mark,that will save me taking the back wheel to bits to mesure up.
dave.
0 x

User avatar
worz
Posts: 638
Joined: Mon Aug 31, 2009 8:24 pm
Location: manchester m34
Location: manchester

Re: Cheaper rear sprockets for Armstrongs

Post by worz » Sun Jun 29, 2014 4:20 pm

I've given Nick an old 350 rear sprocket so he can use that has a guide
0 x
MT604 Armstrong.
MT350 off roader.
MT500 Project ??

Speedshop
Posts: 361
Joined: Tue Oct 13, 2009 5:57 pm

Re: Cheaper rear sprockets for Armstrongs

Post by Speedshop » Mon Jun 30, 2014 7:02 pm

has anyone tried an XT 500 sprocket on these? It looks a similar deal and a pattern one has both plain and countersunk drillings - as if they knew it fits other bikes. You can get XT sprocket is a whole range of sizes and chain pitches.


Image
0 x
www.rexs-speedshop.com
Classic Performance

Post Reply

Who is online

Users browsing this forum: No registered users and 2 guests