Project of the Month built by mayhugh1

Help Support Home Model Engine Machinist by donating using the link above or becoming a Supporting Member.
Home Model Engine Machinist > Building Them > Team Builds > Australia and New Zealand team build anyone?

Reply
 
Thread Tools
Old 10-11-2012, 11:15 AM   #91
Herbiev
Administrator
HMEM_ADMIN.png
 
Herbiev's Avatar
 
Join Date: Jan 2011
Posts: 2,110
Liked 257 Times on 217 Posts
Likes Given: 85

Default

Thanks Ausdier and Jim. Alibre sounds promising. 30 day free trial and the misus can get me the full version for xmas. Just gotta be a good boy for a few weeks


__________________
Herbie
Hallett cove
South australia
Herbiev is offline  
 
Reply With Quote
Old 10-11-2012, 11:26 AM   #92
Herbiev
Administrator
HMEM_ADMIN.png
 
Herbiev's Avatar
 
Join Date: Jan 2011
Posts: 2,110
Liked 257 Times on 217 Posts
Likes Given: 85

Default

Got a small problem with threading the base plates. The tapping drill I resharpened halfway through proceedings drilled hole sizes varying from 2.7 to 3mm. Too big for a 3mm tap Would it be ok to get a new 3mm drill and tap the holes 3.5mm instead of 3mm. The only other option I can think of would be to fill the holes with "Liquid Steel" or similar and drill new holes or totally remake the whole base plates. Please advise.
Tia Herbie


__________________
Herbie
Hallett cove
South australia
Herbiev is offline  
 
Reply With Quote
Old 10-11-2012, 11:58 AM   #93
ausdier
Member
 
Join Date: Feb 2011
Location: Burpengary, Australia
Posts: 188
Liked 83 Times on 59 Posts
Likes Given: 7

Default

What if you just drilled 3mm through and then counter bored the bottom of the base and put a nut under there ?
ausdier is offline  
 
Reply With Quote
Old 10-11-2012, 07:40 PM   #94
tel
HMEM_SUPPORTER.png
 
tel's Avatar
 
Join Date: Feb 2008
Posts: 3,303
Liked 110 Times on 105 Posts
Likes Given: 6

Default

4BA might be a better choice - easier, I think, than M3.5 for most of us to get hold of.
__________________
Tel

I come from Australia
That's my native land
Where a bird in the bush
Is worth two in the hand
tel is offline  
 
Reply With Quote
Old 10-11-2012, 09:42 PM   #95
Herbiev
Administrator
HMEM_ADMIN.png
 
Herbiev's Avatar
 
Join Date: Jan 2011
Posts: 2,110
Liked 257 Times on 217 Posts
Likes Given: 85

Default

Thanks for the replies. I'll take the 4BA route if thats ok with everyone. Just pm me if you want the counter bore method.
__________________
Herbie
Hallett cove
South australia
Herbiev is offline  
 
Reply With Quote
Old 10-12-2012, 01:45 PM   #96
Bastelmike
 
Join Date: Sep 2012
Location: Germany NRW
Posts: 68
Liked 6 Times on 6 Posts
Likes Given: 12

Default

M3.5 is probably no good solution if You guys want to buy bolts and nuts.
M3.5 is no standardized size in metric for bolts. Dunno the supply situation in Australia, but no local hardware store in Europe sells them. Just looked for two larger online-supplier for bolts and they don't list them either.

I know You can buy taps M3.5, but bolts might be difficult to get.
My advice don't go with M3.5

Mike
Bastelmike is offline  
 
Reply With Quote
Old 10-13-2012, 12:21 AM   #97
ausdier
Member
 
Join Date: Feb 2011
Location: Burpengary, Australia
Posts: 188
Liked 83 Times on 59 Posts
Likes Given: 7

Default

Going 4BA might be fine but for me, and remember I am not building anything for this engine, is that I hate to mix differant styles eg metric and imperial in the same project. Just my 2c worth.
ausdier is offline  
 
Reply With Quote
Old 10-14-2012, 11:38 PM   #98
tel
HMEM_SUPPORTER.png
 
tel's Avatar
 
Join Date: Feb 2008
Posts: 3,303
Liked 110 Times on 105 Posts
Likes Given: 6

Default

It is better to avoid mixed marriages, yes, BUT in this instance 4BA works out just right, and they they are easily available.

Besides which, BA (British Association) are a metric based bolt in any case.
__________________
Tel

I come from Australia
That's my native land
Where a bird in the bush
Is worth two in the hand
tel is offline  
 
Reply With Quote
Old 10-21-2012, 04:07 AM   #99
hi speed scrap
Junior Member
 
Join Date: Feb 2012
Location: Australia
Posts: 77
Liked 17 Times on 10 Posts
Likes Given: 6

Default

Sorry guys, been down the South Island for nearly a week, (Tassie, that is!)
Anyway, havent done much except the rough sketch link below.

http://i1356.photobucket.com/albums/...amBuildPB3.jpg

Changes,
A 1 spigoted valve cage into Cyl head ports
A 2 Reduced valve dia to 5.7 mm
B Altered retainer to include in/ex ports and mounting capscrews
D Head includes transfer ports

I will post related blurb later tonight.

Dave
hi speed scrap is offline  
 
Reply With Quote
Old 10-23-2012, 01:41 PM   #100
hi speed scrap
Junior Member
 
Join Date: Feb 2012
Location: Australia
Posts: 77
Liked 17 Times on 10 Posts
Likes Given: 6

Default

Well, tonight has arrived 4 days later!!

Mmm,, and I thought the above post might have drawn some comments

Anyway my main objective was to show my thoughts on an
inlet/exhaust port design as in sketch F, ( intake port 1 and
exhaust port 2), by altering the retainer as in sketch B,
showing the port 1. and the mounting bolts 2.
Cage would be pressed into retainer and drilled thru for
gas passage.
Most overall dimensions remain as original.
Looks a bit ugly! I really hope someones got a better idea!

what do you guys think?
Is it worth getting ausdier to draw it up properly?

The rest I was just fiddling with, thought I could make the
transfer port as part of the Cyl head as in sketch D and E,
with a blanking plate in the end as D 1.
my thought was of all that weight of carby, exhaust, valve gear
etc hanging off those two tiny bolts.
The other thing I was fiddling with was the dead volume of the
transfer port, ie, its affect on compression and inability to completely
expel exhaust gases.

typing finger has blister now, and brain hqas faded, good night!


Dave


hi speed scrap is offline  
 
Reply With Quote
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Team Build No.5A JorgensenSteam Team Builds 4 03-08-2011 02:45 AM
I wish we'd team build a boiler now BobWarfield Team Builds 45 07-15-2008 01:40 PM
TB3 - IC engine team build Brass_Machine Team Builds 66 07-07-2008 01:16 AM
TB2 - Next Team Build Brass_Machine Team Builds 0 04-26-2008 04:48 PM
Team build Brass_Machine Team Builds 185 04-06-2008 06:32 PM



Newest Threads






- Top - Member List