2 Seat setup

Hi all
Just started to build the twin seat setup

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Looks to be a good start although have you checked the castors for their loading characteristics, they "look" a little on the light weight side. Watch out if they are cheapy Chinese castors as the tyres dont seem to fair well if they are loaded to anywhere near their max. Seen a few folks with trollys with similar tyres not lasting that long ?

Be interesting to see how you do the hinge mech between the engine and seat, I've followed a couple of different ideas folks have had.

Certainly a good start

LiveSteam,The casters which i have not sure if they are from the land of chop sticks but was mainly looking for a good thrust bearing on the unit as the wheel can be change at a later date, the connection to engine frame is next thing to be done

Mick1020 wrote:LiveSteam,The casters which i have not sure if they are from the land of chop sticks but was mainly looking for a good thrust bearing on the unit as the wheel can be change at a later date, the connection to engine frame is next thing to be done

Its generally only the tyre and tube that fail from what I've seen, although I've seen some chop stick steel turn to jelly before now when you ask it to do any real work
All the swing arm bits are the interesting bits to get right from what I've seen.
Keep up the great work with pictures

Ah the beauty of a Showman. No wheelies. My seat frame "hangs" on the bunker but is full width so reaches the corners and is strong. I do sit close to the engine so no real torsion on the bunker.

I have noticed at a number of rallies that the single wheel cantilever seat works the best. Especially on uneven ground.

Hi Lynnr, no problem with seating on the DCC less work to do, there is a double seat supplied in the kit but i have seen a few mods done to them, personal preference which is a good thing

Progress, a few more pics

The 8mm rods act as a torsion bars for uneven ground
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Just to make other seat & foot rest then remove, finish welding & clean/Paint, will be fitting a tool box in between seats as well

Surely you'd put a cupboard in for the milk and cups for the tea! You'll be a popular man this year Mick
Will you be up at Carnew in Feb?

Hi Keith, could fit two small oak barrels under seats for the Black Barrel Jameson    & then have the tea for the cure  
I will be at Carnew in Feb, going up on the Saturday, have you done any more building of the SCC

Haha that's the way to go! Not a lot done now catching up with the paint brush and now adding a shed extension (Hindsight would be a wonderful thing for this build!)

Progress & finished, just the tool box next

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Looking good, like the back rests, the steam apprentice guys have a two seat set up on their Burrell & that works fine.

Looks good, very smart, still slightly concerned over the caster size, especially on a moist rally field, but that will come with some real life testing.

I also think the tie bars might be to short for uneven ground. Also some form of stop will be required to prevent hands and fingers being crushed between the moving and fixed parts of the seat.

I mean the trap point at the bunker edge. My tie bars are 280mm centre to centre and believe me I have had the seat move the full travel from top to bottom negotiating short sharp slopes.

Many thanks for your help full suggestions,

Chris, your right about the wheels after taking them out of there frame there is a plastic bearing inside so they may not even last a day

Phil, I know there is not that much travel in having the short link arm's but when making the frame i accounted for it, if needed longer arm,s  will pass thou to the rear up rights, after going on road runs & rally's there was not that amount of gradient change in a very short distance to allow for greater movement, but as said time will tell when in use & if needed can change to longer arms, there is also a movement stop in the link tow bar, if i do find that move movement is required the stop will be on tool box which is not yet fitted

Many thanks again for any suggestions any one has, always intrested in them,

I do wish that the SC had more weight so that the double seat could be fixed to tender as the DCC , I think it just looks better without the extra wheels on the back & its not just the double seat ,have noticed that when towing any heavy loads when using the single seat she has a tendency to pull the front end up a touch but if i take my weight off the seat she's back down, I have added about 10kg to the front axle which does improve it but don,t won't to add more as the load on the upright pin & axle may not be designed for it i think. Please correct me if i,m wrong on this as it could be a soloution  
I,m talking my self into buying a DCC, problem solved.

Trust me, your new seat will be a lot more comfortable........

Hi Mick
you might wish to check this company out. they do ball raced castor sets and also replacement wheels. You may with a load of Irish look find a wheel that will fit into your existing swivels meaning no re-drilling cutting or welding, good luck on that.

as for the loading on the front axle as you increase the weight on the back seat you decrease the weight on the front end. thus removing the stresses that are of concern to you. however if your passenger then gets of you will need to compensate by removing the weight from the front as well.

All this to one side the front axle should have been designed to take the full static weight of the engine ( boiler full,no water in the tender and no driver)
You can measure this using a couple of sets of bathroom scales one under each front wheel. Now with the help of a glamorous assistant sit your self on the engine on a normal tender mounted seat and take a second reading from the scales. The difference between these 2 readings will be the amount of weight that needs to be added to the front axle to neutralise the weight of the driver.
now the weight of the passenger can come and go without concern for front axle loading.

PLEASE DON'T run of and start this process just yet read on:- all this sea-soaring of weight sounds great but if you put a bigger weight on the back now just because you can then please remember that all the extra weight has gone on the fulcrum point, and that is the back axle and that is probably an almost certainly not designed for that kind of force.

"oh sod it" a DCC with a full roof and a dynamo for ballast its the only way forwards.

castors-online.co.uk/acatalog/heavy-duty-ball-bearing-wheels-castors.html?

Simon C ( a full roofer )

Simon C, thanks for the info & link for the wheels will be placing an order for them

Was at the Carnew Model show on Sunday for the first Ireland miniature steam rally, a good test for the twin seat, there were no problems with it & worked perfect for the day


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Excellent news, looks like it was a bit moist. Nice turn out mind looking at the engines in the distance.

Tool box finished

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