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Author Topic: TVR1A Bulid  (Read 20746 times)

benjaml1

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Re: TVR1A Bulid
« Reply #25 on: April 13, 2010, 12:45:57 am »

Some good info in this page but for the purist click on material comparison chart, punch in your requirements & all will be revealed....

http://www.mcmaster.com/#o-rings/=6mu6xb
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Albion

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Re: TVR1A Bulid
« Reply #26 on: April 14, 2010, 03:49:48 am »


what is the problem with Viton and WD40 does it damage it

thanks
Peter
viton is good with hydrocarbons, but not high temp water.

EPDM as stated is preffered for hot water.

Siliicon (red silicon) is ok with water, but can tend to crumble when exposed to high temps continuously.

Unless you want to start getting into exotic materials


The main boiler feed pumps at sizewell somehow got supplied with Red Silicon in them and that would fall apart in less than a month. we switched to EPDM and problem went away. Pity we never went through the approvals  :D

But EPDM is not very tolerant to oils, and can swell up if handled with oily hands
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Underpressure

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Re: TVR1A Bulid
« Reply #27 on: April 15, 2010, 08:39:12 am »

Replying to the original question: I am building up a TVR1A at the moment and have the same problem, with screws / bushings binding. I tried reaming the bushing out a very small amount, to allow the screw more clearance, but it appears the bushings are designed to move within the linkage arms. I have used loctite on a few suspect screws and this seems to have solved the problem for now, but I'll know better when I start to run the engine, which neatly leads to my problem:

Where can I get a couple of 0-80 x 3/16 pan head screws?

I am one short in my kit (no, it's not lost on the floor) and a quick 'tinternet' search has come up with nothing in the UK. There must be a supplier somewhere, anybody got any ideas?

Neil
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gondolier88

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Re: TVR1A Bulid
« Reply #28 on: April 15, 2010, 08:44:36 am »

Have you tried EKP Supplies or Model Making Supplies?

Greg
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Don't get heated...get steamed up!

Underpressure

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Re: TVR1A Bulid
« Reply #29 on: April 15, 2010, 09:00:04 am »

No, but I'll give them both a try.

Thanks Greg.
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MichaelK

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Re: TVR1A Bulid
« Reply #30 on: April 15, 2010, 09:09:31 am »

Hi Neil, the thread is back where it started. :-))
Sorry can't help with suppliers in the UK!
Have you tried Mr R.A.Graham??? {-)
If you can get a reply, please let me know how. One of my cylinders has been bored\threaded off centre, causing fairly major leakages, and this is only on 10psi air!
At the moment I own a pretty, expensive paper weight!
Thanks Mick
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Underpressure

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Re: TVR1A Bulid
« Reply #31 on: April 15, 2010, 09:22:55 am »

Mick, I was going to buy the kit direct from Mr Graham, so I sent him an e-mail on December 18th. I later thought that maybe that was a bit close to Christmas, so I sent it again in January.

I bought the engine from Miskin models in February, and I still have had no reply to my original enquiries.

As your engine is not working, would you mind just taking a couple of the 0-80 x 3/16 pan head screws out and sending them to..........  :}


I hope you get it sorted soon.

Neil
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MichaelK

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Re: TVR1A Bulid
« Reply #32 on: April 15, 2010, 09:40:26 am »

I bought the extra brass hex kit, so I do have a few spare bits. I thought I'd lost one of the hex's , maybe I was short supplied!
Mick
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kiwimodeller

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Re: TVR1A Bulid
« Reply #33 on: April 15, 2010, 11:15:09 am »

Neil' if you do not have any luck send me a P M with your address. I bought three engines from Robert Graham last year and after my friend lost a screw while assembling his engine Robert sent me a bag full of assorted screws and nuts as spares. At that time the communication was really good. Later I bought another engine and it went missing in the post but eventually when it did not turn up he replaced it which was very fair. Unfortunately since then the communications seem to have gone down hill and I too have sent emails that never got replied too. Regards, Ian.
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Underpressure

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Re: TVR1A Bulid
« Reply #34 on: April 15, 2010, 02:48:03 pm »

That's a very kind offer, thanks Ian.

There is a model engineering show this weekend and my Father in Law is planning a visit. I have asked him to keep his eyes open.

Neil
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MichaelK

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Re: TVR1A Bulid
« Reply #35 on: April 16, 2010, 11:09:44 pm »

Hi all,   :-))
This morning I recieved 2 replys from Robert Graham, one dating back a month ago. Maybe he was on holiday or something.
Mick
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wideawake

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Re: TVR1A Bulid
« Reply #36 on: April 16, 2010, 11:57:46 pm »

Hi all,   :-))
This morning I recieved 2 replys from Robert Graham, one dating back a month ago. Maybe he was on holiday or something.
Mick


Yes I've just received a response from Robert to an email from a few weeks ago and an immediate helpful response to my follow-up question this evening.

He's there and on the ball ATM

Cheers

Guy
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benjaml1

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Re: TVR1A Bulid
« Reply #37 on: April 16, 2010, 11:58:39 pm »

I ordered two engines from Mr Graham, account cleared & I waited. For weeks I waited & no ( zero/zilch/nada) response.....   I then cancelled the order they were shipped out the next day... You go figure...

EDIT: Just read the prior post, looks like Mr Graham has improved his customer support....About time
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kiwimodeller

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Re: TVR1A Bulid
« Reply #38 on: April 17, 2010, 11:28:19 am »

If you read his "About Us" page ( http://www.grahamind.com/aboutus.html ) you will see that making the engines is a home based side line to a full time job and that he has been doing it since 1991. I suspect that all the talk on forums such as this about what good value for money the engines are has created a demand that far exceeds his usual sales and also probably that regular work sometimes gets in the way of model making. If it were not for many similar small one man businesses such as this lots of us would stuggle to get the parts we need at a reasonable cost, especially in the steam engine field so would you all please just keep quiet for a couple of months while the poor man catches up and I get my stuff, then you can start posting again. Thank you {-) :} :-) Ian V.
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Brooks

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Re: TVR1A Bulid
« Reply #39 on: April 18, 2010, 03:40:44 am »

I am sorry some of you have had trouble with Graham products. I've personally bought 5 of his kits and have been satisfied. Mine went together with few problems, ran good, and are a good value for the money.

Now an editorial comment: Anyone in the hobby business knows it is darn hard to make money at it. Almost every home-based vendor I've ever talked to has said that they are in it for the fun, mostly. They like the idea that they are providing something to the hobby that is unique, or is needed. They hope to gain respect among their hobby peers.

Now, just because you sent some one some money, does that give you the right to deal with him rudely?  If you want to drive a home-based guy out of business, then sarcastic comments about him will certainly reduce his fun. In fact, it's dirty comments by customers that probably remove more service-oriented folks from this business than any other factor, including bad checks. So, if you want fewer vendors out there, then, by all means, employ the famous British sarcasm.

Now, I've lost money to home vendors who were crooks. So I know that not everyone out there is a nice guy. And crooks deserve all the bad-mouthing we can heap on them. I've also received goods that did not meet my expectations. With the exception of the crooks, all the other vendors went out of their way to make me happy, either by refunds, or new merchandise, or whatever it took.

Before jumping on a vendor, please give the guy the same breaks you'd give a friend in your club. Life happens, not everything goes as planned. Sometimes a sole operator can't give you the service you'd expect from a big corporation. If there's a slip-up, then maybe it's not intentional, and maybe you will need to employ more patience than you expected. I have dealt with vendors who prefer email to telephone, and some the reverse. If you can't get a guy with your communication vehicle of choice, then try the other means at your disposal. One guy over here, brilliant machinist and innovator, lists an email address for his home business, but, it turns out, he hardly ever responds - he's a guy who'll talk your ear off on the phone, but email...forget it :-). As an email guy myself, I ran myself ragged until I found out his preference.

Your disappointment is real, your frustration is real. If all you can do for yourself to get relief is to scrag the guy on a forum, then so be it. Please understand, though, that you are not doing the hobby a service, and we will all be poorer for your actions. Not only is the specific vendor removed, but potential vendors look at the verbiage, and think "man, why would I want to let myself in for that experience?"
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Bernhard

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Re: TVR1A Bulid
« Reply #40 on: April 18, 2010, 09:28:56 am »

...  Hi......... Graham...do a  first class service....i 5 off his machines,,,,,,,bot all whas ready made with hex bolt.....after some month..one get a problem...i send it back ...and i get it back fast,,,and it have be runing like a rolex after,,,,,,
what ever have have ordred from Graham i have get it..bolt and orings....so fore me it have Be OK :-))

Regards Bernhard
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Underpressure

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Re: TVR1A Bulid
« Reply #41 on: April 18, 2010, 09:53:49 am »

I think people are staring to get a little defensive here.

I have had no dealings with Mr Graham, I sent him an e-mail, twice, as I'm not inclined to make International phone calls in the hope of finding the person at home, and got no reply, so I placed my order with one of the UK importers.

The engine has gone together well, it is just unfortunate that I have either misplaced or was never supplied with one tiny little screw that unfortunately turns out to be just about unobtainable in the UK. I have not attempted to contact Mr Graham again, as a generous forum member has offered me a solution.

I haven't made any sarcastic comments about Mr Graham, or the quality of his work and as someone who used to operate a 'paying hobby' type business from home, while holding down a full time job, I fully understand the pressure he is under, I also recognise that the TVR1A has recently become a very popular product over here, so demand for both kits and information has quite probably outstripped the spare time Mr Graham has available. However, if you have a web site and supply goods / service based on the products on that web site, I don't think it is unreasonable for customers and potential customers to expect a timely reply to any enquiry, even if it is an automatic 'out of office' type reply, saying that 'due to current demand...etc'.

It seems that Mr Graham is catching up with e-mails, which is good for us, but as paying customers we have a perfect right to express our views (provided they are not libellous) and that is all that anyone here has done.

Neil
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MichaelK

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Re: TVR1A Bulid
« Reply #42 on: April 18, 2010, 10:03:57 am »

Hi all,
Going back to my last post, maybe I should add that I'm very happy with Robert's response. Now I just have to wait for the postal system to do it's thing. Hope that the dramas in Europe dont't slow things down.
Mick
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benjaml1

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Re: TVR1A Bulid
« Reply #43 on: April 18, 2010, 10:52:03 am »

Sincere apologies if I have offended anyone. They look to be fine little engines & with the improved customer support I'm sure they will have a bright future...
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MichaelK

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Re: TVR1A Bulid
« Reply #44 on: May 02, 2010, 04:58:39 am »

Just to finish off this thread,
Im HAPPPY!!!
 :-) :-) :-) :-)
 I recieved my new cylinder the other day (10days from the USA is about normal), rebuilt the motor, and it goes perfectly so far. No unscrewing bolts, a small leak from the o ring on top of the valve chest, which may go away as the o ring beds in. It actually runs (A bit rough ) on the first notch up or down from center,
Now to organise a boiler, oiler etc etc and a boat to put it into!
Mick
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derekwarner

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Re: TVR1A Bulid
« Reply #45 on: May 02, 2010, 06:02:57 am »

Sorry Mick......but static o-rings do not bed in  >>:-( ...if you are experiencing a steam bypass from a valve chest cover ......the leakage even @ 150 degrees C & @ 2 bar will progressively increase ......simply by the o-ring being erroded under pressure...& hence to atmosphere

There is only one fix.......replace it....but also check for any sharp edges between mating components that may have caused the initial pinching  <*<  of the o-ring

Many blame an o-ring as a poor class of static seal, however if installed in correctly dimensioned & machined o-ring cavities ....the o-ring of the appropriate material for the conditions will be perfect  :-)) ....Derek
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Derek Warner

Honorary Secretary [Retired]
Illawarra Live Steamers Co-op
Australia
www.ils.org.au

MichaelK

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Re: TVR1A Bulid
« Reply #46 on: May 02, 2010, 07:12:24 am »

Thanks Derek
Guess I'll have to go down to the local engineering supply shop in Brookvale and get some viton o rings. :(( Might as well replace all 4 of them. :-))
Mick
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derekwarner

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Re: TVR1A Bulid
« Reply #47 on: May 02, 2010, 07:43:14 am »

Mick.....just confirm the o-ring size....ID x diameter section here on Mayhem as others may need the dimensions .......

Then just send a PM with your postal address & I will post 1/2 a dozen Viton o-rings of the correct dimension......... Derek  :-))
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Derek Warner

Honorary Secretary [Retired]
Illawarra Live Steamers Co-op
Australia
www.ils.org.au

MichaelK

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Re: TVR1A Bulid
« Reply #48 on: May 02, 2010, 07:54:21 am »

This is very kind of you Derek
The size (out of the Assembly Instruction Booklet) are 1/16" x 3/16" , which equals AS568-003
Mick.
ps the motor is still chugging away on the kitchen bench
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Underpressure

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Re: TVR1A Bulid
« Reply #49 on: May 02, 2010, 08:01:11 am »

I just thought I'd add that thanks to the kindness of Kiwimodeller, mine it tick tocking away on air.

At 15 psi it really goes, goodness only knows what 35 psi of steam will produce  :}

Neil
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