By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Allendale Jan 24th

Stuart M.T.B. 1a

All Topics | Latest Posts

Search for:  in Thread Title in  
BasKo18/07/2021 20:45:51
13 forum posts
5 photos

Hello,

I own an old Stuart M.T.B. 1a engine and looking for the drawings. Can anybody help me out where I could get those?

Many thanks!

Brian H19/07/2021 08:14:09
avatar
2208 forum posts
113 photos

I thought that Stuarts would be the obvous place to look but the MTB engine is not on their site.

Hopefully someone has one tucked away that you can get a copy from.

Brian

br19/07/2021 08:28:34
697 forum posts
3 photos

Stuart's do not have the drawings, having enquired before.

The engine is circa 100 years old, an original Henley issue.

bill

JA19/07/2021 08:44:37
avatar
1217 forum posts
73 photos

I am intriged about the engine. I assume it is a model of a Victorian motor torpedo boat engine. It would be nice to see a couple of pictures of it and some idea of its size, please.

JA

JasonB19/07/2021 08:55:34
avatar
Moderator
21307 forum posts
2419 photos
1 articles

Fair bit about the MTB range here, look at the top under "marine" for individual engines.

Looks like it could be carved from solid so I'd be interested in a drawing if one turns up.

br19/07/2021 08:57:23
697 forum posts
3 photos

MTB Engines | Stuart Turner Steam

As ndiy would say, Google is your friend here. wink

bill

PS   Same link as Jason as bouth posting at same time.

Edited By br on 19/07/2021 08:58:38

br19/07/2021 09:29:58
697 forum posts
3 photos

Mtb engine on ebay, £140 , No bids

393450327330

bill

Brian H19/07/2021 10:36:54
avatar
2208 forum posts
113 photos

I wouln't mind one of those from Stuarts at £1 10 shillings!

Brian

JA19/07/2021 11:02:09
avatar
1217 forum posts
73 photos

To all

Many thanks. My curiosity has been satisified.

I only knew of Stuart's website which is good and very useful. The one that Jason and Bill gave is splendid and will be view at leisure soon.

As for the engine, it is not what I am looking for but if a set of castings became available I could be interested (even without drawings).

JA

BasKo19/07/2021 11:15:43
13 forum posts
5 photos

Hello,

this is my engine. The model is complete even if the photo doesn’t shows the fully assembled engine.

Sadly 3-4 threads are stripped. I have to find a solution for this. What would you do? Replace the the existing threats by M3 threats?

0019f35e-984e-47fe-b557-72ea4751f915.jpeg

Edited By BasKo on 19/07/2021 11:16:27

Edited By BasKo on 19/07/2021 11:16:39

Brian H19/07/2021 12:00:41
avatar
2208 forum posts
113 photos

That would depend on what size the stripped threads are and how close to any edges they are. If you have any pictures to show how close to the edges they are that would help.

As to size, they could be BA sizes but more probably Whitworth or BSF. Whit threads go down at least to 1/16" but taps may be difficult to find unless second hand.

If you could indicate where you are in general terms i.e. Not your full address, then someone on here may be able to identiy what sized threads and therefore suggest a repair method.

Brian

br19/07/2021 12:25:41
697 forum posts
3 photos

Brian.       BSW threads. 

Photo showing hole postions on the MTB engine.stacks-image-e8775d5.jpg

Edited By br on 19/07/2021 12:27:25

Brian H19/07/2021 15:15:49
avatar
2208 forum posts
113 photos

It looks to me that the threads could be opened up to the next suitable size and fittted with threaded bushes tapped to a convenient size or, fitted with stepped studs where one end is to the size of the opened up holes and the other end is the original size,

It would be interesting to read what others think.

Brian

br19/07/2021 15:36:25
697 forum posts
3 photos

Your suggestion of a stepped stud would be my choice.

bill

Michael Gilligan19/07/2021 15:38:34
avatar
18710 forum posts
915 photos
Posted by Brian H on 19/07/2021 15:15:49:

[…]

It would be interesting to read what others think.

Brian

.

Just guessing, from the photo … I would think there is plenty of room for Helicoils

MichaelG.

BasKo19/07/2021 15:47:47
13 forum posts
5 photos

ac7282b6-5d84-4f7f-b8a4-4befa1093843.jpeg

Here are some photos with some marks of the threads which are stripped.

There is enough room for a new thread, but the diameter of screw head will be the limitation.

06957188-7c3a-4b27-a559-d04c7955d18e.jpeg

Michael Gilligan19/07/2021 15:57:37
avatar
18710 forum posts
915 photos
Posted by BasKo on 19/07/2021 15:47:47:

.

There is enough room for a new thread, but the diameter of screw head will be the limitation.

 

.

… which would, I think, make HeliCoil inserts the logical choice.

MichaelG.

.

For the avoidance of doubt: I have no commercial interest in the product !

https://helicoil.in/pdf/HeliCoil%20Catalogue.pdf

Edited By Michael Gilligan on 19/07/2021 16:04:27

JasonB19/07/2021 16:17:48
avatar
Moderator
21307 forum posts
2419 photos
1 articles

If the cheese head screws are original then custom made ones with the same size head and an enlarged thread would be an option, you could stay with Whitworth threads that way.

BasKo19/07/2021 17:01:27
13 forum posts
5 photos

Thanks for all the response!

@JasonB: yes, the cheese head screws are original! Thus nuts and bolts would destroy the original look.

I think helicoil or to enlarge the thread is the way to go.

Does anyone know which thread size has been used? br indicated BSW? I would assume 3/32 BSW then.

 

Edited By BasKo on 19/07/2021 17:01:51

Edited By BasKo on 19/07/2021 17:05:14

JasonB19/07/2021 17:06:35
avatar
Moderator
21307 forum posts
2419 photos
1 articles

Early Stuart engines use Whitworth so I should think that would apply to this engine too. What diameter are the screws?

I'd take a stab at them being 3/32" whit so if making new screws then 1/8" whit

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Latest Forum Posts
Support Our Partners
walker midge
Dreweatts
Eccentric July 5 2018
cowells
JD Metals
Warco
emcomachinetools
rapid Direct
Eccentric Engineering
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest