stunthanger.com
General control line discussion => Open Forum => Topic started by: Brian Gardner on September 23, 2016, 09:34:56 PM
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G'day Fellas,
I've considered doing ABC piston/liner/rod/pin sets for the Merco 35. ( I used to have 2 of them and they were great ).
I would do some heads also as the originals were pretty soft and prone to stripping the plug thread.
Can I have a bit of a 'show of hands' as to how many people would be definitely interested?
B
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It depends on which model of the Merco. The redhead ones, the blackhead ones or the last version that used the cylinder/piston assembly that wasn't a drop-in liner/piston. In any event I'd be interested. By the way, I received the LA25 sets some days ago. Thanks!
Steve
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I would be interested in 2
Are you planning on a repeat set of the Tigre 51's?
I am guessing you would have a lot of takers for those as well.
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Brian - I'd be interested in the HP40. Might you put up a post asking for a survey of which engine p/l sets would sell, rather than single examples? Sorry for the slight hijack...
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I would also be interested in 5 of the HP40
Maybe replicate the ones Tom has?
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I tend to only take on one new thing at a time. ST46, 51 & 60 are currently in production. Shortly we'll do the LA46. I'm even doing the YS60 RC pattern motor for someone. So things are pretty busy.
These would be for the red head and black head version of the Merco 35.
I do recall reading about the popularity of the HP40 but have never laid eyes on one myself. Refresh my memory. Were they a good 4/2/4 engine stock or were they universally modified?
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Brian, they were a high speed r/c engine, typically modified by taking off a little of the squish band and raising the intake ports. If you want to do one, I can loan you aftermarket piston/liner sets or measure them up. Apologies for thread drift.
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I like to have a complete motor to work with.
The aftermarket piston/liners you have for the HP - are they stunt timed? No need to re-invent the wheel if there is already something that is proven to work.
Brian, they were a high speed r/c engine, typically modified by taking off a little of the squish band and raising the intake ports. If you want to do one, I can loan you aftermarket piston/liner sets or measure them up. Apologies for thread drift.
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Mercos-I'd take 3 sets if you produce them.
Steve
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Oh Dear .
I do recall reading about the popularity of the HP40 but have never laid eyes on one myself. Refresh my memory. Were they a good 4/2/4 engine stock or were they universally modified?
The Earlier ones were lower timed , Gold Cup was 120 / 140 ish .
My First RPR had a PAPER Gasket Under the Sleeve Flange :P
Removed the timing was 110 / 130 . This did a 2-2-2 , but It WASNT . As It was 2-2-2-2 or 2-2-2-2-2 , as in a Three Stage Powerband . ;D
Late Gold Cups were abc , most others DYKES RING .
The Usual was the FR , rather than the RPR , but I wouldnt have FOUR RPRs if I thought they wernt any good . ;D
Bill Wewages Peroquet Ran One .
(http://static.rcgroups.net/forums/attachments/9/5/7/7/2/a4952071-78-MAN%201%2077.jpg)
(http://g.io.ua/img_aa/large/1967/41/19674178.jpg)
Bob Hunt was running one in the Genisis before the FSR , Kept lunching the Ring in the Heat . Sometimes one a day .
As you might expect with a Tounge Muffler . :-X
Gold Cup , notallofem are Black , a fancey NASA Heat Dispersent paint . some with a BROWN colour . :P
(http://www.craftsmanshipmuseum.com/images/HP40goldB.jpg)
silver star , someones painted the UNFINNED head BLACK . ( Wernt Finned untill the Gold Cup )
(http://www.craftsmanshipmuseum.com/images/HP40blackB.jpg)
I think Mr Aeroproducts was saying he still had a few ABC & parts .
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Theres a factory Control Line ( introduced later ) with the tall factory intake ,
(https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTp-SKEewwPYcZm3zjI_SMXF6MqLeHT9zBYBgDoew_uViUbt6Gr)
or two , ;)
(http://thumbs3.ebaystatic.com/d/l225/pict/121861933530_1.jpg)
and one of a R.P.R. pylon . as wot ive got .
(http://thumbs.ebaystatic.com/images/g/DvEAAOSwpRRWnlAq/s-l225.jpg)
Henry Nelson was the Supplyier of a pair .
1974 HP 40F R.C. , is 44 / 43 on the crank & 140 / 120 / 108 on the sleeve .
nov. 1979 Gold Cup 33 57 144 / 126 / 112
nov. 1973 R.P.R. 43 63 140 120 104
According to the Sceptre Flight tripe . seems about right . Other THINGS garnerable there . They whinge about variability on the earlier ones and say to wake up their ideas on Q.C .
My N.i.B. was labled 69 !? - so mustve been made before they started making them . ;) might eplain the Low Sleeve on a PYLON ENGINE , unless someone'd been at it .
Were in many F. M. F2B plans in the 80s . FRs of couse .
THUS .
(http://i.ebayimg.com/images/g/Bg4AAOSw9mFWLrzR/s-l1600.jpg)
Er , maybe ' one ' shouls start a H.P. 40 Gardener a.b.c. fred , Bob . And transfer the Info Their . I was looking at the measured timing figures the other week - pretty much agree with the above .
Hopefully Randy & Other Tooners'll chime in on this . IF THEY SEE " HP 40 " as a Title . S?P H^^
Um, " DRIFT " ,
(http://static.rcgroups.net/forums/attachments/3/5/3/6/0/a9298989-137-HP40GC-A%2001.jpg)
Er " Tsunami " ,
(http://img.auctiva.com/imgdata/9/5/1/0/4/9/webimg/713659804_o.jpg?nc=816)
Bah ; then theres the OTHER ( than this ) red & black white box . :P
(http://static.rcgroups.net/forums/attachments/1/9/6/3/7/9/a7942201-47-P6050003.jpg)
looks like the paint brush was at the factory . BUGL was earlier a shaker & mover at HP - HP 15 D T/R .
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Do you want any heads Steve?
Mercos-I'd take 3 sets if you produce them.
Steve
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Regarding the cylinder heads-I'd take 2. Thanks Brian.
Steve
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Brian, will the Merco sleeve and cyl have any more power than the original? Thanks
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It will be smoother running. More power, perhaps a tiny bit with the improved fits & seal.
Brian, will the Merco sleeve and cyl have any more power than the original? Thanks
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We have enough numbers. So these will happen.
But possibly not till the new year. We have ST46, 51 & 60, LA46, Fox 35 shafts and others to get through first.
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Fox 35 crankshafts? Tell me more....
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A better balanced shaft than stock.
Fox 35 crankshafts? Tell me more....
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Wasted words but, if you make Fox 35 cranks you can leave the front of the crankweb flat since there is a good relief around the bushing in the case. This will give a thicker crankweb and slightly more counter weight win win.
What we really need for the Fox 35 is straight connecting rods.
MM
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Brian, add me to the list for a Merco 35 P/L set.
....and while you're at it, make some rods. ;D
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Rods will be included as well as the pin. Do you want a head Clint?
Brian, add me to the list for a Merco 35 P/L set.
....and while you're at it, make some rods. ;D
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Rods will be included as well as the pin. Do you want a head Clint?
Sure, why not?
And make that two sets. I just checked and I have one redhead and one blackhead motor.
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Copy that mate.
Sure, why not?
And make that two sets. I just checked and I have one redhead and one blackhead motor.
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Hello Brian
I have a black head merco.35 R/C converted to C/L put me down for a set.
Juan
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No problem Juan, I have added you to the list mate.
Hello Brian
I have a black head merco.35 R/C converted to C/L put me down for a set.
Juan
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The Merco 35 sets are almost ready.
All those that reserved a set will be contacted shortly :-)
Brian
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Hello Mr. Gardner:
I too would be interested in P&C for the HP Gold Cup .40 engines.
Thank you,
Frank McCune
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Brian,
I too would like a set of P&C, rod, Wrist pin, and head for the HP 40 Gold Cup, if you make them!
This is a light powerful stunt engine especially suited for the larger Classic airplanes.
One of the pioneers in using this engine successfully for Stunt was Bob McDonald. In fact he won VSC a couple of years ago with one in very tough competition, in one of his designs from the early 70's. Great running engine that would still be in use today if parts etc. hadn't died. He would be an excellent person to talk to about mods etc.
Randy Cuberly
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Ill take 3 sets of the HP 40
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I presently am running an HP40 in one of my ARF Noblers and the engine runs great. Not your typical 4 2 4 break more like a wet 2 cycle. It turns an 11x5 prop very nicely and is light weight to boot. A very nice engine actually. PhillySkip