Circle D - New Website

Circle-D · 07-19-2007, 02:52 PM

I have posted some pics of my 11" lightning converter in a 3D view.

I also have a few other pics of the shop and some videos.

Not all the links work yet.

More to come.....

Chris

Circle D Specialties - Lightning 11"

derekrpd · 07-20-2007, 04:32 PM

What seems to be the difference between a 11" and 12" converter? I see that a lot of companies offer these two sizes. Is one better or more beneficial than the other? Thanks.

Circle-D · 07-21-2007, 10:42 AM

The 12" is the stock diameter, to gain the extra stall a high stall pump is used. This works fine for mild stall increases, up to about 22-2400 rpm. Anything after that and you start affecting the torque multiplication and efficiency of the converter. So to achieve a higher stall, a smaller diameter is used - the 11" is the next choice. Both of these converters use a very negative pump, meaning the blades of the pump are high stall, with gives you very good torque multiplication. So the benefits of using a 11" over a 12" would be a higher stall for a better 60', if you can get the traction. The cons are it costs more. The 11" core is harder to find, more expensive, and more work to convert over to a 4R100. Both converter are fine for a DD, I have the 11" in my 04 and really can not even tell it is there till you get on it. I hope this helps a little.

Chris

derekrpd · 07-27-2007, 06:15 PM

Thanks for the info. Chris.

Circle-D · 07-31-2007, 06:22 PM

Your Welcome!

07-19-2007, 02:52 PM	#1 (permalink)
Circle-D Supporting Vendor Paid Member Join Date: Mar 2007 Location: Houston, TX Posts: 162 NLOC member #: 2347 View this user's gallery iTrader: 0 / 0%	Circle D - New Website I have posted some pics of my 11" lightning converter in a 3D view. I also have a few other pics of the shop and some videos. Not all the links work yet. More to come..... Chris Circle D Specialties - Lightning 11"

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07-20-2007, 04:32 PM	#2 (permalink)
derekrpd Registered User Join Date: Apr 2006 Location: Reading, Ma Posts: 185 View this user's gallery iTrader: 3 / 100%	What seems to be the difference between a 11" and 12" converter? I see that a lot of companies offer these two sizes. Is one better or more beneficial than the other? Thanks.

07-21-2007, 10:42 AM	#3 (permalink)
Circle-D Supporting Vendor Paid Member Join Date: Mar 2007 Location: Houston, TX Posts: 162 NLOC member #: 2347 View this user's gallery iTrader: 0 / 0%	The 12" is the stock diameter, to gain the extra stall a high stall pump is used. This works fine for mild stall increases, up to about 22-2400 rpm. Anything after that and you start affecting the torque multiplication and efficiency of the converter. So to achieve a higher stall, a smaller diameter is used - the 11" is the next choice. Both of these converters use a very negative pump, meaning the blades of the pump are high stall, with gives you very good torque multiplication. So the benefits of using a 11" over a 12" would be a higher stall for a better 60', if you can get the traction. The cons are it costs more. The 11" core is harder to find, more expensive, and more work to convert over to a 4R100. Both converter are fine for a DD, I have the 11" in my 04 and really can not even tell it is there till you get on it. I hope this helps a little. Chris

07-27-2007, 06:15 PM	#4 (permalink)
derekrpd Registered User Join Date: Apr 2006 Location: Reading, Ma Posts: 185 View this user's gallery iTrader: 3 / 100%	Thanks for the info. Chris.

07-31-2007, 06:22 PM	#5 (permalink)
Circle-D Supporting Vendor Paid Member Join Date: Mar 2007 Location: Houston, TX Posts: 162 NLOC member #: 2347 View this user's gallery iTrader: 0 / 0%	Your Welcome!