I always get washers wrong when I don't have an example to follow. Somehow the nuts get loose and things vibrate apart.

Now I am about to mount a pump and a 270 cc motor onto a homemade frame and I will need to know which washers to use and in which order and where.

 

So there are 4 holes in the bottom of the cast iron pump structure. One in each corner. There will be corresponding holes in the frame I am attaching it to. And on the pump itself there is place to mount the engine which also has four holes. 

 

I expect to need 8 bolts obviously, but how many washers and where? How can I keep it from vibrating apart?

 

Yes I know I should know this stuff, I think I was absent the day they taught everybody else.

bolt > Flat washer> frame> engine> flat washer> spring washer> nut.

 

But if frame does not have crush tubes you will not be able to torque the nuts to spec as the frame will crush.

Does anyone know if you can get nylock nuts here.

 

As don mega days but nylocks ensure they won't vibrate off.

 

Failing that some Loktite thread seal should suffice.

Just now, grollies said:

Does anyone know if you can get nylock nuts here.

 

As don mega days but nylocks ensure they won't vibrate off.

 

Failing that some Loktite thread seal should suffice.

Nylocks are available, I buy them at hardware house.

 

But remember they are single use only, if re-used they do not "lock" the same as a virgin nylock.

Indeed, but there's no substitute for a Nyloc on something that vibrates.

 

52 minutes ago, Don Mega said:

bolt > Flat washer> frame> engine> flat washer> spring washer> nut.

 

But if frame does not have crush tubes you will not be able to torque the nuts to spec as the frame will crush.

The frame won't crush. It will be flat iron to flat iron. no tubes

Thanks for your quick help.

I was raised before the days of Nyloc washers and seemed to survive, use longer bolts sufficient to use double nuts, the second or the upper nut can be a half nut (probably not available in Thailand) - so, bolt thru' the frame, motor foot, flat washer, nut - correctly torqued- then second nut tightened and torqued onto the lower nut. 

If you want the ultimate, used castellated nuts correctly torqued and with a split-pin thru the nut and bolt. 

27 minutes ago, Artisi said:

I was raised before the days of Nyloc washers and seemed to survive, use longer bolts sufficient to use double nuts, the second or the upper nut can be a half nut (probably not available in Thailand) - so, bolt thru' the frame, motor foot, flat washer, nut - correctly torqued- then second nut tightened and torqued onto the lower nut. 

If you want the ultimate, used castellated nuts correctly torqued and with a split-pin thru the nut and bolt. 

Yep, used to run 'pigs' thru pipelines. Single centre bolts holding pig rubbers together that's what we used, castelled nuts and split pins. A pig coming apart in a pipeline wouldn't have been good.

And, just to scare us all :-

 

 

 

impressive vid Crossy, Have used nord locks in the past and they are the shizzle.

11 minutes ago, Crossy said:

And, just to scare us all :-

 

 

 

Great video, love innovation like that.

 

I'll bet transam would just put a blob of weld on it!

8 minutes ago, grollies said:

Great video, love innovation like that.

 

I'll bet transam would just put a blob of weld on it!

have used a dob on silicon on bolts that shake nut loose, seems to work well !!

19 minutes ago, grollies said:

I'll bet transam would just put a blob of weld on it!

 

You mean like the guys who did our gates, BEFORE adjusting the hinges so the gates actually opened?

 

I thought one of the guys looked familiar but couldn't quite place him ...

 

1 minute ago, Crossy said:

 

I thought one of the guys looked familiar but couldn't quite place him ...

 

Did he drive a vigo with pristine tire pressures ?

2 minutes ago, Don Mega said:

Did he drive a vigo with pristine tire pressures ?

 

Would Trans be seen dead, alive or Transcendental in this?:-

 

 

 

Prolly more reliable than the vigo !!

3 minutes ago, Don Mega said:

Prolly more reliable than the vigo !!

 

At this point I will withdraw to a safe distance, "light the blue touchpaper" and all that :)

 

And I just cannot resist posting this, it gets me every single time :-

 

 

those lads defo have balls a lot bigger than mine !!

1 hour ago, Crossy said:

 

At this point I will withdraw to a safe distance, "light the blue touchpaper" and all that :)

 

And I just cannot resist posting this, it gets me every single time :-

 

 

Never seen that before, very impressive!

Here's a technique we used on helicopters.  They do some serious vibration.

 

 

Great video Crossy, leaves my nuts looking poorly

2 hours ago, Crossy said:

 

At this point I will withdraw to a safe distance, "light the blue touchpaper" and all that :)

 

And I just cannot resist posting this, it gets me every single time :-

 

 

Bonkers.

5 hours ago, Crossy said:

 

At this point I will withdraw to a safe distance, "light the blue touchpaper" and all that :)

 

And I just cannot resist posting this, it gets me every single time :-

 

 

 

I wouldn't knock it too much...the design was suitable for the intended purpose which was to please the crowd...with a parachute to boot, hurrah!

 

at least they didn't attempt any fake moon landings...

 

 

5 hours ago, Don Mega said:

have used a dob on silicon on bolts that shake nut loose, seems to work well !!

 

hey, man...dose those mothers with superglue and then it'll take dynamite to shake 'em loose...

 

we useta do that with surfboard car roof racks in California where carpark thievery was always a problem...

 

 

If the bolt is long enough, after you torque down the nut, put another nut on and torque it down against the first one.

Or you could use loctite on the threads of the bolts.  Avaiable from Lazada, but I expect that Home Pro or Global would have it also: http://www.lazada.co.th/loctite-495-super-bonder-instant-adhesive-10017863.html

 
At this point I will withdraw to a safe distance, "light the blue touchpaper" and all that :)
 
And I just cannot resist posting this, it gets me every single time :-
 
 

FANTASTIC !!!

If it had a golden dome on it one might think that the infamous monk was along for the  ride!

23 minutes ago, wayned said:

If it had a golden dome on it one might think that the infamous monk was along for the  ride!

I'm sure his would have Rolls Royce engines on it.

A dab of the wifes fingernail polish on the thread will get you out of trouble if nothing else is readily available.