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Rina and T&K drawings

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Jim Greethead09/11/2010 10:52:07
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131 forum posts
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Hello Graham, I have just checked the dimensions and I agree with Stick that the CM-6 will have the required reach. It should just drop nicely into the hole when the washer is compressed to half size.
A couple of things to note about the CM-6 are:
1. The thread is M10 x 1.0 which is neither metric coarse nor metric fine so you have to ask specifically for the M10 x 1.0 tap,
2. The cap is not the usual screw top so you need a special connection. I have seen a spade terminal used (not very pretty). The RCEXL ignition (as in Part 8) has a CM-6 version with a connection that fits right over the plug if you push hard enough. 
Jim
 
MichaelR09/11/2010 11:24:44
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374 forum posts
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Jim, Plug cap for CM-6 Part No LC05EFK  I use these caps on my RLE engine a neat fitting with a nice push fit.
 
Stick.
David Clark 109/11/2010 11:28:04
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3357 forum posts
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Hi Stick
Does this mean you use the CM-6 for the RLE?
Where does the cap come from?
Same place as the spark plug?
regards David
 
MichaelR09/11/2010 11:49:41
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374 forum posts
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Hi David,
Yes I use the CM-6 plug on my RLE, the cap comes from the same place as the plug.
see Here.
Stick.
 
 
David Clark 109/11/2010 11:59:18
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3357 forum posts
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10 articles
Hi Stick
Thanks for that.
Looking forward to starting my RLE.
What sort of ignition gubbins did you use?
What fuel do you use?
It is a great shame this engine is not still available.
regards David
 
Howard Jones09/11/2010 12:07:23
70 forum posts
112 photos
can someone please tell me what the T&K part of the tread title refers to?
I have read the magazines and I have no idea.
MichaelR09/11/2010 13:28:00
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374 forum posts
79 photos
Hi David,
I have made two RLE's, on one engine I use  the TIM-6 Transistor Ignition (Hall Effect) with a Exciter Coil, and the other engine has a electronic Buzz Coil Transistor ignition(Hall Effect) using a 6 Volt motor coil, for fuel I use petrol with a squirt or two of  WD 40.
 
See my enginesHere for more detail.
Stick.
Graham Bird19/11/2010 15:26:45
5 forum posts

               hi  all
      re rina engine the recess round the valve cage on the cylinder head is 0.250 dia
      which makesit difficult to insert the spring of 0.278 dia. as shown in picture.
      iwould like your comments. please.
      
      could anyone tell me the dia of the bob weights scaling the drawing they seem
      about  5/ 16 dia.
 
james service 219/11/2010 16:30:08
2 forum posts
jim service  19/11/10
 
Hi Graham
 
The recess holes are 5/16 inch diameter. My original drawings were approximately one to one scale and was shown as 3/8 inch although the actual dimension was omitted.
 
The bob weights are 1/4 inch diameter.
 

Edited By james service 2 on 19/11/2010 16:32:36

Graham Bird27/11/2010 15:00:07
5 forum posts
test

Edited By David Clark 1 on 27/11/2010 15:43:37

Graham Bird27/11/2010 15:19:18
5 forum posts
hi  james
I am about to make the fiddly bits on the rina governor the dimension from the centre of the bob weight to pivot hole centre on the drawing is given as1.00 inch could you verify if this dimension is correct. please
regards graham.

Edited By David Clark 1 on 27/11/2010 15:42:59

David Clark 127/11/2010 15:44:58
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3357 forum posts
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10 articles
Hi Graham
If you must paste from Word, please use the paste button with the blue W on it.
See edit panel below for position.
regards david
 
james service 228/11/2010 17:38:58
2 forum posts
Hi Graham
 
My drawings show the pivot holes are 1 inch from the outer edge of the weights. As these are a 1/4 inch diameter, the dimension should be 7/8 inch.
 
Under normal circumstances, I'd measure this on the model before replying, but I am snowed in at the moment - probably for the next few days, so I am unable to get to the workshop.
 
Suggest you assemble the governor levers as in photo no 45 pg 323 in 4386 and fit the weights so as to just clear the face of the flywheel.
 
Regards
 
Jim

Edited By james service 2 on 28/11/2010 17:44:31

Edited By james service 2 on 28/11/2010 17:46:14

Donald Williamson21/12/2010 15:09:39
16 forum posts
Hi all, I have been following the banter on the Rena and have read all the article with a mind to make it my next project .  I am wondering why there is no reference to valve timing. Can you help?
Donald Williamson.
Graham Bird21/03/2011 16:58:45
5 forum posts
hi james
can you give me the rocker heght to pivot hole
also over all length of valves
and details of caps on valve springs
all the best graham
Norman Vant13/06/2011 14:01:25
50 forum posts
6 photos
Hello All,
 
I am currently making the body of the Rina and having bored the main bearing hole in the plates I'm about to drill the hole for the cam mounting shaft and looking ahead a little. To me the drawing of the Cam Mounting Shaft and Bushing (p165, fig. 17) makes no dimensional sense.
 
The drawing doesn't even seem to be to scale, so setting about it with a pair of dividers isn't much help either. Has anyone else noticed this, or is it just me in need of a new pair of glasses?
 
As it's my first I.C. engine I'm not really comfortable making it up as I go along.
 
Regards,
 
Norman.
 
 
 
 

JasonB13/06/2011 15:04:53
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Moderator
18104 forum posts
1994 photos
1 articles
No its not a very good drawing.
 
Missing dimensions, wrong dimensions (2BA thread onto 5/16" shaft) and you can't take a guess at some of the sizes as you don't know what size the hole in the gear should be as the other drawing does not show it with a hole!!
 
 
I would hazzard a guess that the smaller dia of teh bush should be 1/4" and the hole 3/16". The plain part of the 2BA thread should be 3/16" The slot width should be obtainable from the arm that fits into it and likewise the pin.
 
Jason
 
Norman Vant13/06/2011 16:24:33
50 forum posts
6 photos
Thanks Jason.
 
At least that confirms that it's not just me losing my grip! Perhaps the drawing should have had a footnote saying, "All Dimensions er... Just guess".
 
Regards,
 
Norman.
David Clark 113/06/2011 16:29:06
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3357 forum posts
112 photos
10 articles
Hi There
Should be 3/16 as that is the od of the 2 BA thread as near as makes no difference
The gear will be a 1/4 inch bore as it obviously runs on the 1/4 inch diameter of the shaft.
The latchout lever is 3/32 inch thick so that covers the slot.
The pin through the assembly can be what you like, not really important as long as it is not to small in diameter. I would probably use a 5ba thread on a 1/8 shaft.
regards David

Edited By David Clark 1 on 13/06/2011 16:29:50

Jim Greethead12/11/2011 21:46:01
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131 forum posts
8 photos
I have finally completed the drawings for a metric version of Jim Service's RINA with a few simplifications to accommodate my limited skills (I hope Jim will forgive me) and now I have commenced construction.
 
But I still have (at least) one problem: I can't find any information about the type of fuel (gas) used, or the construction of the fuel tank or the connection from the carburettor to the tank. Could someone please point me in the right direction?
 
Thanks to the good advice from John Olsen, I have completed the drawings in Alibre - certainly the quickest, easiest and cheapest way to produce 2D drawings and you get 3D images and assemblies into the bargain. My copies of AutoCAD, DesignCAD and TurboCAD are now only used to retrieve drawings that I made in the past.
 
I am happy to provide copies of my drawings to anyone who asks for them (I hope I can do that without doing anything illegal). You can have them in Alibre, .pdf or .dxf.
 
As I work my way through, I am finding some dimensions missing but you are welcome to them as they are if you are in a hurry or later on (after Xmas at least) if you want the corrected set with the errors minimised (they are never absolutely correct).
 
Jim
 

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