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ASP .52 4 stroke questions

Old 05-15-2006, 06:35 PM
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skiman762
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Default ASP .52 4 stroke questions

Picked this up used an ASP FS52 4 stroke
Does anyone know what the valve settings are and if they're set hot or cold
also what are the intintial needle valve settings
thanks in advance
Ed
Old 05-15-2006, 08:27 PM
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w8ye
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Default RE: ASP .52 4 stroke questions

The valve settings are .0015" to .004" cold for both intake and exhaust.

The needle valve should be set to where the engine runs best. I think the intial was 2 1/2 turns?
Old 05-15-2006, 08:28 PM
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loughbd
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Default RE: ASP .52 4 stroke questions

1
Old 05-15-2006, 08:45 PM
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Default RE: ASP .52 4 stroke questions

Great thank you
I didn't measure but I'm gonna guess mine are more like .020 maybe more I'll tighten them up and see how she runs.
I don't have the book of course so if there's any other good info I might needs let me know
I think I read somewhere that the motor uses 5% nitro any recommendations I was thinking omega since it has some castor in it.
Ed
Old 05-15-2006, 08:48 PM
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w8ye
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Default RE: ASP .52 4 stroke questions

The motor will run on whatever fuel you use in your other glow engines.

10% is a good compromise between performance and cost. I use 15%

I see people use all synthetic and castor mixtures. I cannot honestly say one is better than the other. There are trade offs.
Old 05-15-2006, 08:53 PM
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w8ye
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Default RE: ASP .52 4 stroke questions

The motor will run on whatever fuel you use in your other glow engines.

10% is a good compromise between performance and cost. I use 15%

I see people use all synthetic and castor mixtures. I cannot honestly say one is better than the other. There are trade offs.


Here is the Manual for the 61 which looks exactly like your 52 on the out side. There's not really much performance difference in them either.

Jim
Old 05-15-2006, 08:53 PM
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w8ye
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Default RE: ASP .52 4 stroke questions

The motor will run on whatever fuel you use in your other glow engines.

10% is a good compromise between performance and cost. I use 15%

I see people use all synthetic and castor mixtures. I cannot honestly say one is better than the other. There are trade offs.


Here is the Manual for the 61 which looks exactly like your 52 on the out side. There's not really much performance difference in them either.

http://www.retail-leaders.com/manuals/210985.pdf

Jim
Old 05-15-2006, 08:55 PM
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Default RE: ASP .52 4 stroke questions

Thanks I'm sure getting the valves set right should help with the idle
Is there any palce to get parts here in the US ?
What prop are you using mine has a 13x4 apc and turns just over 9000 set a few clicks to the rich side
So is the ASP the same as the Magnum?
Old 05-19-2006, 11:52 AM
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wcmorrison
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Default RE: ASP .52 4 stroke questions

The ASP is the same as Magnum, ASP is the over sea brand name, Magnum is the US brand name.

Good luck,

Cheers,

Chip
Old 05-19-2006, 03:59 PM
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loughbd
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Default RE: ASP .52 4 stroke questions

Not quite true. Magnum is a copyrighted barndname of Global Hobbies who is Hobby People. Asp and Magnum now are exactly what Royal and Magnum were in the late 80's. They were made by the same company but Hobby Shack owned the world wide rights to use Magnum and Royal owned the rights to use Royal products. Asp and Magnum were both sold in this country at the same time. Asp was made in red China and Magnum was made in Taiwan. Asp was the first major engine line sold here that was made in Commie China. Sold by Indy R/C. When Hobby Shack lost the Taiwan company (thunder tiger) they contracted with the company that made ASP. Oh Indy sold ASP and said that ASP stood for Acceleration. Speed and Power. How wrong they were.
Old 05-19-2006, 07:24 PM
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Default RE: ASP .52 4 stroke questions

Not quite true. Magnum is a copyrighted barndname of Global Hobbies who is Hobby People. Asp and Magnum now are exactly what Royal and Magnum were in the late 80's. They were made by the same company but Hobby Shack owned the world wide rights to use Magnum and Royal owned the rights to use Royal products. Asp and Magnum were both sold in this country at the same time. Asp was made in red China and Magnum was made in Taiwan. Asp was the first major engine line sold here that was made in Commie China. Sold by Indy R/C. When Hobby Shack lost the Taiwan company (thunder tiger) they contracted with the company that made ASP. Oh Indy sold ASP and said that ASP stood for Acceleration. Speed and Power. How wrong they were.
Old 05-27-2006, 09:14 AM
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Default RE: ASP .52 4 stroke questions


ORIGINAL: w8ye

The motor will run on whatever fuel you use in your other glow engines.

10% is a good compromise between performance and cost. I use 15%

I see people use all synthetic and castor mixtures. I cannot honestly say one is better than the other. There are trade offs.


Here is the Manual for the 61 which looks exactly like your 52 on the out side. There's not really much performance difference in them either.

http://www.retail-leaders.com/manuals/210985.pdf

Jim


Concerning the ASP .52 = Do the 61 and the 52 motors have the exact same demensions? Knowing the piston displacement should be bigger, is the outside the same fit as each other???
Old 05-28-2006, 06:26 AM
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Default RE: ASP .52 4 stroke questions

The external dimensions are exactly the same. They are also the same as the OS 52 except the carb is different
Old 05-28-2006, 02:57 PM
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loughbd
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Default RE: ASP .52 4 stroke questions

Bill,

Not quite true. Magnum is a copyrighted brandname of Global Hobbies who is Hobby People. Asp and Magnum now are exactly what Royal and Magnum were in the late 80's. They were made by the same company but Hobby Shack owned the world wide rights to use Magnum and Royal owned the rights to use Royal products. Asp and Magnum were both sold in this country at the same time. Asp was made in red China and Magnum was made in Taiwan. Asp was the first major engine line sold here that was made in Commie China. Sold by Indy R/C. When Hobby Shack lost the Taiwan company (thunder tiger) they contracted with the company that made ASP. Oh Indy sold ASP and said that ASP stood for Acceleration. Speed and Power. How wrong they were.
Old 05-28-2006, 04:00 PM
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Default RE: ASP .52 4 stroke questions


ORIGINAL: loughbd

Bill,

They were made by the same company but Hobby Shack owned the world wide rights to use Magnum and Royal owned the rights to use Royal products. Asp and Magnum were both sold in this country at the same time. Asp was made in red China and Magnum was made in Taiwan.
A bit attentive.. The new Magnum are made in China now in our days. But the older Magnum was made in Taiwan in late 80's and the oldest Magnum 4 stroke open rocker arm engine was made in England in early 80's.

Also The SC/Magnum/ASP are same engine from same factory Sanye MFG. Some older and newer has difference design as crankcase and cylinderhead, better carburator in later years etc.. but inside are about same.. But i am not sure about the timing are same or difference in these ASP, Magnum and SC engines.

Jens Eirik
Old 05-28-2006, 04:19 PM
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loughbd
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Default RE: ASP .52 4 stroke questions

I know exactly the history of The Magnum brand as sold by Hobby Shack/ Hobby people. I used to work for them as an engine repair tech.

Paul Bender, the owner of Global/Hobby People copyrighted the name Magnum in the late 80's when he changed the name from Thunder tiger. Magnum is now a Global Hobby copyrighted brand name. Has been for years. Magnum was first made in Taiwan by the Thunder Tiger people. Now it's made in China by the same company that made ASP.
Old 05-28-2006, 05:45 PM
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Default RE: ASP .52 4 stroke questions

All I know is I am real happy with the ASP 52 flew last weekend ran perfect all day
just ordered a maggie 52 for a trainer I have looking forward to that as well
I haven't seen any 61s on any sites just 52s and 70s is there a place to by them I have a 50 size yak that would be fun with a 61 on it
Old 05-29-2006, 07:11 AM
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w8ye
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Default RE: ASP .52 4 stroke questions

Global/Hobby Shack/Magnum No longer sells the 61. Their web site has the 61 service manual and not the 52 FS manual.

You can buy 61's on the internet and also you can buy the ASP labeled 61's from www.justengines.unseen.org

Apparently they thought with the 52 and the 70, they no longer needed to sell the 61?
Old 05-29-2006, 08:45 PM
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Default RE: ASP .52 4 stroke questions

do you thing I could resleave the 52 to a 61 on a rebuild looks like all the parts are the same except the sleave and piston ?
Old 05-29-2006, 09:48 PM
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Default RE: ASP .52 4 stroke questions

I highly doubt it
Old 05-30-2006, 05:16 AM
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w8ye
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Default RE: ASP .52 4 stroke questions

It is highly likely that the crankcase on the 61 is bored slightly larger for the 61 sleeve.
Old 05-30-2006, 10:48 AM
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Default RE: ASP .52 4 stroke questions

That would make sense I guess when it get tierd I could stick it on the milling machine and open it up
I think I saw that the head part number was diff too well if I get bored with it maybe I'll do some porting on the head
and see what happens
Old 05-30-2006, 02:50 PM
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Default RE: ASP .52 4 stroke questions

The difference in the head is to accomodate the larger sleeve. The valves etc are the same.

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