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popcan · 08-01-2006, 10:31 PM

xx xx

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popcan · 08-08-2006, 08:30 PM

xx xx

hifly2104 · 08-08-2006, 08:40 PM

For those of us that don't know what does PDP stand for I have never heard of it ??

Cecil Marshall · 08-08-2006, 09:44 PM

Someone please correct me if if I'm wrong:
PDP stands for Perry Directional Porting.

Back in the days before "schnerule porting",when loop scavenged engines were the norm, Clarence Lee, famed engine guru, would modify K&B engines and Veco engines by adding another "transfer port". This was angled and positioned such as to Direct the fuel mixture to a certain area in the Sleeve and thus giving the engine a better fuel/air mix resulting in more power.

A "loop scavenged"engine has a "baffle" on top of the piston!

I think

: HP and HB(Hintenberger) engines had PDP also!

PDP was the forerunner to schnerle ported engines

popcan · 08-10-2006, 05:59 PM

xx xx

popcan · 08-20-2006, 11:58 PM

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ronm · 08-21-2006, 01:59 AM

xxx xxx

**Concordefan** · 08-21-2006, 10:37 AM

Quote:

Originally Posted by ronm

xxx xxx

XXX XXXX

Midair · 08-21-2006, 01:36 PM

Quote:

Originally Posted by Cecil Marshall

Someone please correct me if if I'm wrong:
PDP stands for Perry Directional Porting.

Back in the days before "schnerule porting",when loop scavenged engines were the norm, Clarence Lee, famed engine guru, would modify K&B engines and Veco engines by adding another "transfer port". This was angled and positioned such as to Direct the fuel mixture to a certain area in the Sleeve and thus giving the engine a better fuel/air mix resulting in more power.

A "loop scavenged"engine has a "baffle" on top of the piston!

I think

: HP and HB(Hintenberger) engines had PDP also!

PDP was the forerunner to schnerle ported engines

You are correct. I still have two HB .40s and an HB .60. They are a "tank" of an engine. Not known for their high RPM, but very powerful and dependable. However, I don't think that HB stood for Hurtenburger. That may have been the name associated with the HP engine (Austrian?). Unless mistaken, HB stood for Helmut Bernhardt, the gentleman who originally manufactured the engine in Germany. The engines are still available - the U.S.A. distributor/manufacturer is MECOA.

http://www.mecoa.com/hb/index.htm

Peter

08-01-2006, 10:31 PM	#1
popcan RCC Senior Contributor Join Date: Aug 2004 Location: Planet X On The Way Here<< Feedback: 0 / 0% Posts: 618 Total Props: 0	xx Remove this ad - become a site supporter! xx xx ================================================== ======= RCC Classified Quick Rules - Location & price is a must when selling RC related items. Update your profile!!! - Use the feedback system after a sale / trade. - Buyer Beware! - One bump / TTT every 3 days. - Classified rules here. ** Infractions will be passed out if rules are broken. Threads may be deleted. ================================================== ======= __________________ Have a great day!!!

08-08-2006, 08:30 PM	#2
popcan RCC Senior Contributor Join Date: Aug 2004 Location: Planet X On The Way Here<< Feedback: 0 / 0% Posts: 618 Total Props: 0	xx xx xx __________________ Have a great day!!!

08-08-2006, 08:40 PM	#3
hifly2104 RCC Supreme Contributor I am: Mike G Join Date: Jan 2005 Location: Elmira Ont. Radio of choice: Futaba 9c # of RCs: 14 Feedback: 40 / 100% Posts: 5,089 Total Props: 15	40 PDP For those of us that don't know what does PDP stand for I have never heard of it ??

08-08-2006, 09:44 PM	#4
Cecil Marshall RCC Expert Contributor I am: Cecil M Join Date: Oct 2002 Location: Sault Ste Marie,Ontario Radio of choice: FUTABA # of RCs: 20+ Feedback: 20 / 100% Posts: 947 Total Props: 1	PDP Someone please correct me if if I'm wrong: PDP stands for Perry Directional Porting. Back in the days before "schnerule porting",when loop scavenged engines were the norm, Clarence Lee, famed engine guru, would modify K&B engines and Veco engines by adding another "transfer port". This was angled and positioned such as to Direct the fuel mixture to a certain area in the Sleeve and thus giving the engine a better fuel/air mix resulting in more power. A "loop scavenged"engine has a "baffle" on top of the piston! I think : HP and HB(Hintenberger) engines had PDP also! PDP was the forerunner to schnerle ported engines __________________ Cecil MAAC #11945L IMAC #3709 Instructor Soo Modellers

08-10-2006, 05:59 PM	#5
popcan RCC Senior Contributor Join Date: Aug 2004 Location: Planet X On The Way Here<< Feedback: 0 / 0% Posts: 618 Total Props: 0	xx xx xx xx __________________ Have a great day!!!

08-20-2006, 11:58 PM	#6
popcan RCC Senior Contributor Join Date: Aug 2004 Location: Planet X On The Way Here<< Feedback: 0 / 0% Posts: 618 Total Props: 0	xx xx xx __________________ Have a great day!!!

08-21-2006, 01:59 AM	#7
ronm RCC Supreme Contributor I am: Ronm Join Date: Dec 2002 Location: Mission, B.C. Radio of choice: Futaba # of RCs: 10 Feedback: 0 / 0% Posts: 5,625 Total Props: 0	xxx xxx __________________ Ron Mattiuz Flying Tigers RC Club "Flying an airplane is just like riding a bike...except it's harder to put cards in the spokes"

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