Author Topic: McCULLOCH KART RACING 1962  (Read 1224 times)

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Offline Cut4fun

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McCULLOCH KART RACING 1962
« on: July 07, 2011, 11:05:09 am »
Mcbob shared this link with me on the Aussie racesaw site. Talks about mixing fuels, nitro, cold plugs, drilling mac carbs, etc.  Thought it was interesting and thought some of you guys here might want to read.

 WS5E Bosch is the colder plug I was using in alky saws or saws that squish was so tight you had to side cut plugs if you used 6 or 7.  ;)

http://macbobaust.com/fuel_data.html
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Offline Al Smith

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Re: McCULLOCH KART RACING 1962
« Reply #1 on: July 07, 2011, 10:12:59 pm »
In 1962 I was 14 years old and totally fascinated with go karts especially McCulloch engines .

They ran them at such high compression  they could not be started by a rope .What they used was a long shaft Ford starter like used on the Ford y blocks ,272,292,312  and a vee belt to a starter cup on the engine .Portable starter on a cart  with a 12 volt battery .

Some of those engines turned at RPM's nobody would believe but most likely the run time between rebuilds was less than an hour .

As far as the fuel ,I was just a snot nosed kid and all I knew was they ran castor oil .

Offline Cut4fun .

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Re: McCULLOCH KART RACING 1962
« Reply #2 on: September 09, 2014, 12:26:39 pm »
More info on pic. Only seen 130cc

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Offline Eccentric

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Re: McCULLOCH KART RACING 1962
« Reply #3 on: September 09, 2014, 01:08:48 pm »
I think that's McBob with one of his West Bend 820 powered saws.
-Aaron

For older saws:
Tune the H side so that it 4-strokes (burbles) at WOT unloaded and just cleans up when under load.
When you lift cutting load, the saw should immediately revert to 4-stroking.  Fine tune the transition point for the wood you're cutting.

Offline Cut4fun .

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Re: McCULLOCH KART RACING 1962
« Reply #4 on: September 09, 2014, 01:21:13 pm »
Figured mcbob. I came across pic in a search and wondered about the story of the saw etc.
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Offline 660magnum

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Re: McCULLOCH KART RACING 1962
« Reply #5 on: September 09, 2014, 01:37:21 pm »
The Power Products AH 82 was 134.373925 cc stock. This one was probably bored as the sleeve blew apart at the transfers? See the custom head?

Watch it in You Tube so you can read the details

https://www.youtube.com/watch?v=26CFL9-PEWI
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Offline 660magnum

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Re: McCULLOCH KART RACING 1962
« Reply #6 on: September 09, 2014, 01:52:15 pm »
West Bend 820

Were Go Karts made by Rupp in Mansfield, Ohio?

https://www.youtube.com/watch?v=9MI3lKPN-Xo
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That knowledge can live after us... and that "Pays It Forward".
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Offline Eccentric

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Re: McCULLOCH KART RACING 1962
« Reply #7 on: September 09, 2014, 02:42:59 pm »
That PP AH82 had some serious muscle.  Could hear right where it started to let go.  Ran (sick) for a good 30 seconds or so afterwards before shutdown....
-Aaron

For older saws:
Tune the H side so that it 4-strokes (burbles) at WOT unloaded and just cleans up when under load.
When you lift cutting load, the saw should immediately revert to 4-stroking.  Fine tune the transition point for the wood you're cutting.

Offline RoyM

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Re: McCULLOCH KART RACING 1962
« Reply #8 on: September 09, 2014, 11:07:44 pm »
In 1962 I was 14 years old and totally fascinated with go karts especially McCulloch engines .

They ran them at such high compression  they could not be started by a rope .What they used was a long shaft Ford starter like used on the Ford y blocks ,272,292,312  and a vee belt to a starter cup on the engine .Portable starter on a cart  with a 12 volt battery .

Some of those engines turned at RPM's nobody would believe but most likely the run time between rebuilds was less than an hour .

As far as the fuel ,I was just a snot nosed kid and all I knew was they ran castor oil .
LOLI was the same way. Dreamed of a twin engine Mac powered kart.
Old age and treachery always overcome youth and enthusiasm

Offline 660magnum

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Re: McCULLOCH KART RACING 1962
« Reply #9 on: September 10, 2014, 12:30:17 am »
More here . . . Brings back old memories as I was 16 in the summer of 61. Had been racing them since '59

https://www.youtube.com/user/VintagePowerSport?annotation_id=annotation_2409093385&feature=iv&src_vid=26CFL9-PEWI
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

 

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