Scalefour Forum

billbedford wrote:....Anyway Here are a couple of photos of work in progress. The light speckles are filings from removing the support pips. The wheels should have gone into the ultrasonic before I took the photos.

BR 9F.jpg

LMS Jubilee.jpg

That actually looks really good already - especially the 9F....

Some 'proper' 9F wheels would be the push I need to get started on my Bradwell chassis that's been sat in it's box for over 5 years...

John Donnelly wrote:Some 'proper' 9F wheels would be the push I need to get started on my Bradwell chassis that's been sat in it's box for over 5 years...

I've got one Bradwell underway (frames and rods done), but there are at least two more.....

Horsetan wrote:

John Donnelly wrote:Some 'proper' 9F wheels would be the push I need to get started on my Bradwell chassis that's been sat in it's box for over 5 years...

I've got one Bradwell underway (frames and rods done), but there are at least two more.....

I open the box of mine every now and again, get frightened and put it away again...

John Donnelly wrote:....I open the box of mine every now and again, get frightened and put it away again...

Other than the fact that my eyesight deteriorated to the extent that I now wear varifocals, I thought it went well enough up to here:

Nice, but where are the CSB fulcrums?

MarkS wrote:Nice, but where are the CSB fulcrums?

There aren't any.

Sounds like the ex-Midland traffic inspector asking the ex-L&NW driver, post 1923, "Where's your Pilot engine?"; pause, shift pipe in teeth, check pocket watch, reply disdainfully (as ex-Premier Line to ex-second best) "Back in 't shed, where 'e belongs!" - or in this case, "Stuck in drawer, where they can't cause no trouble!"

CSBs were invented after someone tried to set up the springs on one of the other Bradwell kits.

MarkS wrote:
Nice, but where are the CSB fulcrums?



There aren't any.

Ahh, air suspension...

MarkS wrote:....Ahh, air suspension...

Oleopneumatic.

I stand corrected... can't wait to see your 9F with oleo pneumatic suspension! Body roll could an issue though.

MarkS wrote:Ahh, air suspension...

... or magnetic

I test printed some of the 9F wheels which look ok. plus Peckett and Southern E1

David

David Bigcheeseplant wrote:9F print.jpg

I test printed some of the 9F wheels which look ok.

That looks promising!

The new Peckett B2 s coming out have 3’7” wheels, can the print be expanded to suit?

Cheers,

David

I can create any wheel if I know what diameter crank throw etc.

Will the 9F print survive being pressed into a tyre?

"Will the 9F print survive being pressed into a tyre?"....from whence cometh the tyres?

Mike

Mike Garwood wrote:"Will the 9F print survive being pressed into a tyre?"....from whence cometh the tyres?

Mike

My question too....

Dave Franks.

Previously I have made the wheels a tight fit in the tyre with a bit of glue so they stay put. I have used Gibson tyres in the past but if I can get tyres CNC machined the I would design the tyre so that the centre has a more positive location. The fit I can get on an axle is similar to that of a Gibson wheel.

Is there a P4 tyre profile I can get so may get a quote for tyres?

David

The profile is in the Standards digest.
Rgds

Made to order P4 wheels, an exciting prospect

I'd start with a set of 9f wheels and go from there (I have 3 to build...one step at a time). So for me cost, to a point, would be a factor. Anything more than Ultrascale prices and I'd be out.

Looking forward to seeing how this moves forward. Just one more question...would EM tyres be available as well?

regards

Mike

grovenor-2685 wrote:The profile is in the Standards digest.

I'd prefer the Exactoscale profile - the scale half-inch extra clearance each side would be most welcome with outside cylinder locos.