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       The Unofficial Mamod and Other Steam Forum Forum Index -> Locomotives
Graham-Jilly

Marvin

Have been home a week now from our trip so on the weekend after mowing and getting all the leaves of the track I gave marvin a run it ran round the track well the first run and after a topup it has decided to leak from some where and puts the flames out
so looks like Ihave a job ahead
DLR

if its got the original boiler its the o ring in the dome swap that and it should be fine
pauly

thats a shame

could we please get some pictures of marvin
Graham-Jilly

Pauly here is a vid in this thread of marvin
http://modelsteam.myfreeforum.org/about8682.html
pauly

yes I have seen that on youtube thanks  
pauly

just looked at your site nice stud of mamods
Graham-Jilly

started stripping down marvin and found that water is leaking from
the sightglass and also one of the endcaps on the piston has come off.hhopefully the boiler is ok still more checking to do
paul_c

Is Marvin the loco that fried the sight glass on our last running day, I think the meth's burner caught alight at the breather.  Maybe you forgot due to your impending trip.  I think you said "there's a job for when I get back"  
Graham-Jilly

paul it was the black SL1K that melted the sightglass Marvin is the green MSS loco
Graham-Jilly

going to order new uprated pps boiler and steel wheel set for him soon so shoud be great it seems that IP dont do mamod uprades any more
paul_c

Hi Graham, Mamodevon has all the spares from IP, check out his web site.     Clinton and I have some spares ordered and he will ship them when he is sorted.  Add yours to ours and we will all save on postage  
steamyjim

Where on MDs website are the spares?
paul_c

http://www.mamodevon.pwp.blueyonder.co.uk/

left hand side of screen it says Spare Parts  
steamyjim

Oh aye. I saw that but didn't realise they were for sale from him
Mamodevon

IP/Mamod/MSS Loco Spares

Hello guys, sorry for the deley but am very nearly ready to launch new on-line shop for all your Mamod and MSS loco spare and upgrades. I have the high pressure boiler back on sale complete with water gauge, filler valve, high pressure safety valve, steam regulator and pipe - all for £99.99p.  I am also introducing a new specially made 0-50psi pressure gauge and siphon to fit this boiler.

All other former IP engineering parts are aslo available, alon with the complete MSS range and all standard spares.

The new company is called 'Dream Steam'!

Watch this space!

MD
Graham-Jilly

hope its not too long mate im desperately needing boiler and wheels  
MTA

Re: IP/Mamod/MSS Loco Spares

Mamodevon wrote:
Watch this space!

MD


Does that stand for managing director?
Graham-Jilly

well marvin is completly pulled apart and new parts ordered from MD  so hopefully they get here by friday and can start the rebuild
pauly

good luck with the rebuild
syrtismajor

Graham-Jilly wrote:
started stripping down marvin and found that water is leaking from
the sightglass and also one of the endcaps on the piston has come off.hhopefully the boiler is ok still more checking to do


Gah! Is this another few bad marks for MSS? Good luck getting him running again, it's quite relaxing watching him trundle through the Outback of your garden.
Graham-Jilly

Well Ive just been the guineapig on Mamodevons website and tested out the buying it had a small glich but was sorted and now have the parts on the way great job Alan  
Hope you dont mind me advertising it here mate you have done a top job on it
Mamodevon

Graham-Jilly wrote:
Well Ive just been the guineapig on Mamodevons website and tested out the buying it had a small glich but was sorted and now have the parts on the way great job Alan  
Hope you dont mind me advertising it here mate you have done a top job on it


Thanks Graham, glad you like it. I am doing a few last checks and edits and it is going live this weekend.  I will do a formal notice when its there.

MD
Graham-Jilly

well an update the parts turned up today held up by customs who opened it for inspection then left a note say nothing was touched.
have put marvin back together and he has been running all evening on blocks just to run him in again and to test the new boiler. the new steal wheels are great. looking forward to tomorrow to see how he runs on the track.
will let you all know  
steamyman

I'm happy for you mate. well done.  
CCairns

Great to hear that Marvin steams again.

I wonder if you will get the air bubble being trapped in the water sight glass tube, that I've experienced with these type of boilers - makes an accurate reading difficult, and even Mamodevon has fitted a blow down valve on Pandora for this reason ( http://www.mamodevon.pwp.blueyonder.co.uk/my_collection.htm ).

Not a major problem as being silver soldered these boilers can actually be run dry, although it is a bad practice.
Graham-Jilly

Chris I noticed it got a bit of an air lock but seemed to settle after a bit of running.
I also liked how the steal wheel sets are held in place with nuts on the frame as the old whels used to scrape the frame occasionly so this should stop that happening
tmuir

Graham-Jilly wrote:
Chris I noticed it got a bit of an air lock but seemed to settle after a bit of running.
I also liked how the steal wheel sets are held in place with nuts on the frame as the old whels used to scrape the frame occasionly so this should stop that happening


I've already got those wheels on my loco. Right bugger to fit but once on they are better in every way over the original wheels. They should also lower the CofG a bit so help stop derailing on corners.
CCairns

Just remember to check the back to back measurement of those wheels, as I've had to re-punch both sets of my IP wheels to get identical measurements, although they are the first version of the wheels produced. And also remember that Spule4 suffered a failure of these wheels requiring them to be torque sealed back onto the axle.
Quote:
so help stop derailing on corners.

Nope, I managed to derail my IP Jane recently. It is obviously better controlled at 45mm compared to 32mm.
tmuir

CCairns wrote:

Nope, I managed to derail my IP Jane recently. It is obviously better controlled at 45mm compared to 32mm.


Yes mine being set to 45mm really helps.
If I'm towing rolling stock fast my loco will derail but by itself its nearly impossible to derail.
CCairns

I agree that fitting these steel replacement wheels will lower the C of G, but fitting a replacement boiler at the same time will probably cancel out that effect.

LGB track was I believe available in 4 sizes of curves, giving a 4ft diameter (R1), a 5ft diameter (R2), a 8ft diameter (R3) & a 16ft diameter (R5). Of course Mamod/MSS track is only available in one size giving a 5ft diameter.

I've read that the PPS Janet has extra weights attached to its side tanks, although we do not have any members who have owned up to having one of these locos yet, so cannot confirm that statement.

A heavily modified Mamod that I've yet to feature on this Forum has 2 strips of heavy metal attached underneath the side tanks like running plates, and certainly makes this more stable than a standard Mamod/MSS.
       The Unofficial Mamod and Other Steam Forum Forum Index -> Locomotives
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