raglan 5

hello im new here and needing help.

i bought a raglan 5 over a year ago from a friend.

he told me everything works its just noisy because its got a chipped tooth.

he is right but its been used far to much and the chipped / missing tooth has now damaged all the other teeth that run against it.

so im looking to find a full set of good change wheels and anything else that goes inside the side cover.

im not interested yet in screw cutting so metric or imperial just to get me going.

thanks in advance.

rick

Hello Rick,

You can establish what type of gears you already have. If they are imperial DP the formula is DP = (n+2) divided by gear diameter in inches. The results will be whole numbers or very close to them like 14; 16; 18; 20 DP

If they are metric gears, rather unlikely in this instance, the formula becomes Module = O/D in mm divided by (n +2).

In both cases the letter 'n' stands for tooth count in whatever wheel you are measuring. Mod values fall in the range of 1.0; 1.25; 1.5 for the common sizes of lathe change wheels.

I hope that helps you decide what you have. Once you know what to look for change wheels often appear in sets or loose on auction sites like eBay and prices may vary about £15 or so each, depending on tooth count. Some suppliers such as RDG may sell new, they could be worth checking

Regards Brian

Rick

According to ww.lathes.co :-

"With change-wheels (all Raglan changewheels were 16 D.P with a 14.5° pressure angle) the threading range ran from 4 to 48 t.p.i or, with the metric conversion gears fitted (52t and 44t supplied with the lathe) 0.25 to 4 mm pitch; the standard change-wheel set included the following gears: 2 x 30, 32, 36, 42, 44, 45, 48, 52 and 60t."

14.5° pressure angle may take a bit of finding off the shelf but its all pretty standard. Quick'n dirty get you going is to get a nylon 20° gear which will run well enough and be strong enough for change wheel duties.

Or for a whole set consider just buying off the shelf 20° gears.

Clive

Hello, and welcome.

I believe the Raglan 5" has 14 DP/ 14.5º pressure angle change wheels. The Gears in the gearbox are 16 DP.

Raglan Mk 1 and Mk 11 have 16 DP change wheels. Some late Mk 11 models have 14 DP change wheels.

I have a late MK 11 with 14 DP change wheels, I require both a 20 and 48 tooth 14 DP change wheel. Have been looking for a couple of years without success, so good luck with your search.

Someone on Ebay makes gears to order in Delrin, also on Ebay a seller called 52kr LINK often has Raglan parts for sale, he is a nice fella to deal with.

Mark.

If you need 14dp use Drummond wheels and make a boss to fit.
As well as cut plastic gears nowadays you can get/make 3D printed gears.

hi thanks for all the replies and so quick as well.

i spoke with tony i think his name is at lathes .co just after i got the lathe and he said good luck in finding a full set.

but he was very help full in telling me about the dp and angles.

ive only ever seen 1 set turn up on evilbay and i missed them.

my problem is i work away from home long hours so i dont get much time to scroll through looking everyday.

so i know this sounds almost selfish but id rather just get a full set if there metric or imperial off the shelf ready to be fitted and get up and going.

Hi Rick , Think I may be able to help as an in the process of converting a 5" Raglan to QCGB in which case I will have a complete set of change gears surplas to requirements so keep in touch Regards C/P

Rick,

Paul is your man for the set. A good fellow who knows his Raglans.

I presume you don’t have a milling machine? Easy, but time consuming, to make a set if you have, although they are not too difficult with just a lathe and a vertical milling attachment. I still have the milling attachment that came with my 5” but I have never used it - and with two mills, likely never will!

How many gears run against this gear with the chipped tooth? The gear with the chipped/missing tooth is easily repaired. The noisy gear train may be more to do with clearances between gears than the chipped tooth.

Just a thought Rickhave you investigated the thrust bearing covers on the variable speed drive as these are the usual source of noise ,just gently touch them when machine is running and you will notice a change in the noise if so they just need adjusting up " GENTLY " Regards Paul S aka C/P

Edited By Paul Smitherman 2 on 05/01/2022 15:04:39

You can save an Ebay search and get it to email you when one gets posted so you don't have to continuously check.

hi all and thanks again.

paul you have just sold me your change wheels.

sorry no i dont have a milling machine its something im looking in to getting just a table top one will do.

i havnt investigated the thrust bearings purely because of the missing tooth and damage to the other gears.

once there replaced i will check other things.

simply because being a mechanic i looked at the broken tooth the damage to the other teeth and thought straight away if another breaks and gets stuck the load between the teeth can bend or put excessive pressure on other bearings shafts etc.

sort the first problem thats obvious then move on to the next.

hopefully there wont be any more.

im so glad i joined here now i was just about to sell it for spares and but a boxford or viceroy.

i didnt know about the ebay thing, its something i will use for other things i need

When meshing gears, there should be backlash, but not too much.

Excess will result in gear rattle, whilst too little will not only produce noise but wear. as well

When setting the mesh, do so with a sheet of paper (About 0.003" thick ) between the gears.

If Paul is willing to provide you with a complete of changewheels, take up his offer.

Better to have too many gears than too few!

Howard

Talking things over with Rick (what he was telling me did not add up to a change wheel lathe (suspected what he had was a QCGB Model) (confirmed in a pic he sent me )so the gear set I had surplass to requirements being 16DP whilst the QCGB model is 14DP Anyhow NOTHING VENTURED NOTHING GAINED I was able to make him some new Tumbler gears (26t 14DP 14/12 DEGREE PA) Regards C/P

You did a good job Paul.!!

Typical of the help so often available on here.

Howard