window shopping opportunity.....

[Schwen]

fyi

http://www.trademe.co.nz/business-farming-industry/industrial/generators-power-supply/diesel/auction-603499425.htm

[rleonard]

What a beauty!

[listard-jp2]

It certainly has alot of unique features on it.

Clearly Listers had an electric start design for the CS way back in 1953, I would be slightly concerned however with having the starter ring gear teeth machined directly into the cast iron flywheel.

One thing I am puzzled by, is that there is no vee belt grooves machined into the flywheel, so how is the alternator driven?

[carlb23]

It certainly has alot of unique features on it.

Clearly Listers had an electric start design for the CS way back in 1953, I would be slightly concerned however with having the starter ring gear teeth machined directly into the cast iron flywheel.

One thing I am puzzled by, is that there is no vee belt grooves machined into the flywheel, so how is the alternator driven?

If you look closely at pic 8 you can see the groves in the flywheel for the v belts.

[LowGear]

Very Nice.  A real piece of British industrial History.

What a great find. 

Casey

Envy is a cruel mistress!

[listard-jp2]

If you look closely at pic 8 you can see the groves in the flywheel for the v belts.

Looking at both pictures 1 and 8, all I can see is the feint mark left on the surface of the flywheel rim where the 3 Vee belts were running on the surface of the flywheel riml AKA flat belt fashion.

I would speculate that at some time in this engines history, that the original flywheel had worked loose on the crankshaft (this is quite a common occurence on single cyl Lister startomatic sets), hence on a twin cyl set its even more likely do to the greater load required by the alternator.

Further more, the seller states the set is rated at 7.5KVA. As the engine can only produce 10 HP the alternator is far too big for the engine. As a 6-1 startomatic would be rated at 3KVA and a 8-1 Startomatic rated at 4.5 KVA.

Hence this set should have a 5KVA alternator fitted to it.
 

[Schwen]

The following comment was added to the auction listing by the seller, and seems to corroborate listard-jp2's observation that a 7.5Kw alternator is too big.

Seller Comment: Listing now updated with photos of control panel. Engine Serial number is 10921022 which matches the red and black plate on the cast base thus indicating the engine is the original unit. Plant No is 37301NA also from the red/black plate. Gen No is 8T40607 which says 6kw not 7.5kw as per alternator.

The reserve was NZD$5,800 (~USD$4,670). It eventually sold for NZD$6,800.

[honda lee]

Maybe lister went with the idea use a larger generator head to not max it out?
This would make a great Father's Day gift!
What is 6800nz in us?

[contaucreek]

Maybe lister went with the idea use a larger generator head to not max it out?
This would make a great Father's Day gift!
What is 6800nz in us?

A generator thats over rated for the engine will bring said engine to its knees if you run the demand up.

[dieselgman]

It is much better to overload your engine as opposed to overloading the generator head. The engine will begin smoking and slow down or stall when overloaded- immediately noticeable and reversible. If the generator head itself is overheated due to overload, the damage is generally permanent and you get no warning, just outright failure.

This is the primary reason to always oversize the generator head... at least slightly (10 or 15 percent).

dieselgman

[millman56]

Gary,     whilst on this topic could you kindly tell me what size head would usuually be fitted  to a TX3  @ 1500 RPM  ?  I`m thinking 20 KVA,  I have the option of a 22 KVA 2 pole 3000 RPM also,  no experience of TX s at this speed but my instincts say no.   

Mark.

[dieselgman]

The TX3 at 1500 rpm makes 24.7hp (18kW) continuous rating - and maxes out at right around 40hp and 2500 rpm. Of course you will prefer running at 1500rpm for continuous duty.

The power curve flattens after 2500 rpm and fuel consumption spikes... but there is a 3000 rpm intermittent rating of 44.4bhp and 33.1kW for this model.

So, from the raw numbers above, the normal generator head sizing on a 1500rpm TX3 will be around 20kW... In 1800rpm North American sets it is normally 22 to 24kW.

dieselgman

[millman56]

Thanks Gary,                                                                                                                                                                 

That makes it perfect for the 20 KVA/16 KW 4 pole head.

Mark.