Post by: 34046 on March 17, 2019, 01:57:28 pm
Post by: 34046 on March 17, 2019, 12:49:43 pm
The RPM's are pretty high on the Mamod oscillators, so for what it is worth I find a 20:1 reduction is about right for a realistic speed on the TE's, you are working with smaller diameter driving wheels so that will have to be taken into consideration.
I had overlooked this and it is now an area of concern but well pleased you mention it.
I will try it now but suspect you will be proved right.
If so, as I want to complete my 4 inch before I pop my clogs, I shall have to find it a new home.
Post by: Weedensteam on March 17, 2019, 11:17:11 am
Post by: 34046 on March 17, 2019, 04:40:50 am
Good looking project, hex head bolts in frame are a nice touch, have you checked the gearing, from my experience with TE's it may have to be geared down a bit more.
Point taken on gearing - thanks.
I have used meccano gears to date and selected the ones that were in proportion to the full size engine so trying to keep looking realistic.
On reflection I think best to steam up and test at this stage before proceeding.
Glad you mentioned it - thanks.
Post by: Weedensteam on March 16, 2019, 11:32:24 pm
Post by: jkbixby on March 14, 2019, 01:24:46 pm
Post by: SeeSteam on March 14, 2019, 07:40:35 am
On the to do list for visiting the UK: go to a vintage steam event! So many cool machines and it's neat time see the different manufacturing.
Post by: 34046 on March 14, 2019, 02:59:06 am
Marvelous steering. I am surprised that I haven’t seen that in practice on big steamers. Very clever.
Where did you get a ready supply of chain?
The steering, bit of a challenge, is as per full size. If you google Robey Tandem Roller you should get full size machines.
The chain is stainless from Meccano Spares in uk -- https://www.meccanospares.com Gears are meccano.
Thanks to all for the favorable comments.
Post by: RedRyder on March 13, 2019, 07:49:01 pm
Great work!
Gil
Post by: SeeSteam on March 13, 2019, 07:34:44 pm
Where did you get a ready supply of chain?
Post by: Jim on March 13, 2019, 07:20:57 pm
Post by: St Paul Steam on March 13, 2019, 07:18:15 pm
Post by: Nick on March 13, 2019, 11:11:21 am
That is going to be a BEAUTY.
Agreed! 8)
Love the steering on that one
Post by: Pete the steam on March 13, 2019, 11:05:47 am
Post by: 34046 on March 13, 2019, 11:02:06 am
Mamod firebox assy and lorry chassis. All rolls etc are scratchbuilt 2.5 inch front and 3 inch diameter rear from 1l4 inch wall aluminium tube. Disc on rear roll is the handbrake drum.