Author Topic: Twin Engine Panther from England  (Read 108060 times)

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Offline SUMO

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Twin Engine Panther from England
« on: June 08, 2010, 02:28:51 PM »
figured id start a build diary. not that an awful lot of building has gone on yet

i have a bad panther habit and this is the next one on the bench.

im hopeing that 2012 might happen for me for bonneville but im not taking a bike over there half baked so we shall see how it goes. funds [as ever] will be a defining factor as much as time

this is the first twin engine bike ive built - first twin panther ever built, and as far as i know will be first panther to run at bonneville [probably good reason - they are not renowned for their turn of pace :-D]

i had a couple of early 1950's engines knocking about in the shed so they are the fodder for the venture. they are a low compression engine so i though it would be remiss of me not to throw a supercharger in their general direction too.

oz popped round at the weekend, drank some warm beer, and put me straight on the direction of the supercharger and alls happy in my shed again

im converting the engines to a semi-dry sump and taking the bores out so i am total 1350cc. various bits and pieces tuning wise but nothing too scary - they need to stay reliable - not too many panther spares in america... i have an r1 front end and a bandit rear propped up ready to go, and a harley 4 speed with an electric boot - kicking 1 panther is bad enough... 2 i dont fancy my chances

got most of the big bits now, and im taking it all up to get frame sorted in a few weeks - cant wait - its been a long time coming

« Last Edit: September 17, 2010, 11:44:48 AM by SUMO »

Offline Buzz Lightbeer

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Re: Twin Engine Panther from England
« Reply #1 on: June 08, 2010, 03:06:19 PM »
Hi Sumo, welcome to the madhouse of OZCO & friends love the project. Oz & I were chatting about it last night, if all the people who are talking of coming over with us in 2012 do so, it looks like around 25 odd people will be there plus about 6 bikes I think :-o.
PJ & I are getting close to having all our parts sourced so we can get going to. As Oz said to me last night, we have about 85 weeks to get it all done, not like he counts the days till we are back on the Great White Dyno to keep our licences up to date :-D       

Offline SUMO

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Re: Twin Engine Panther from England
« Reply #2 on: June 08, 2010, 03:14:33 PM »
hey mate - my original plan was 2013. but the saving on shipping makes 2012 sound like a nice idea if i can pull it off. if i cant i can live with it...

Offline oz

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Re: Twin Engine Panther from England
« Reply #3 on: June 08, 2010, 03:20:21 PM »
You know it Chop Chop buddy we serve cold beer in my shed!!

Dont bother drinkin Daves(Buzz Lightbeer) notorius for buying low to non alcoholic beverages.
Newcastle born and bred a City built on Coal and Steel and a people built of stronger stuff

Offline nrhs sales

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Re: Twin Engine Panther from England
« Reply #4 on: June 08, 2010, 04:46:24 PM »
Never heard of a Panther. Where was it made?  Are they single cylinder engines?

Offline Seldom Seen Slim

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Re: Twin Engine Panther from England
« Reply #5 on: June 08, 2010, 04:57:31 PM »
I've held my thoughts about you Brits close to my chest - but since you've broached the subject yourself -- I'll simply state my agreement with your assessment of your countrymen.

"...it looks like around 25 odd people..."

Yup, odd indeed.
Jon E. Wennerberg
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 (that's way up north)
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Offline SUMO

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Re: Twin Engine Panther from England
« Reply #6 on: June 08, 2010, 05:14:32 PM »
Never heard of a Panther. Where was it made?  Are they single cylinder engines?

built in Cleckheaton West Yorkshire. About 3 miles from where I was born. Went out of business in the 60s. They are indeed a big single... 600cc long stroke, fire every other gas lamp

and I've been called an awfull lot worse than odd

Offline nrhs sales

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Re: Twin Engine Panther from England
« Reply #7 on: June 08, 2010, 05:51:52 PM »
Very cool. So wold you plan to run it in vintage class?

Offline dw230

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Re: Twin Engine Panther from England
« Reply #8 on: June 08, 2010, 06:58:00 PM »
I'm not  a bike guy but, does this chart from the 2010 rulebook put damper on a twin engine 1200cc bike?

7.D.4   Frame   Engine               Max      Max No.   
   Class    Classes                 Displ.       of Engines:
       P           P, PP, PB, PPB, PV                  3000      1
       M          All except UG, UF & omega                  3000      1   
       MPS      All except UG, UF & omega                3000      1   
       A          All except UG, UF, P, PP & omega             3001 & above   2
       APS      All except UG & UF, P, PP             3001 & above   2
       S           All except P, PP               3001 & above    2
       SC        All except P, PP & omega       3001 & above   2
       SCS      All except P, PP & omega      3001 & above   2


DW
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Offline 46champ

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Re: Twin Engine Panther from England
« Reply #9 on: June 08, 2010, 08:15:32 PM »
It looks to me like you could run A or APS 1350, if the engines were produced prior to 1956 it should be able to run vintage.

Offline dw230

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Re: Twin Engine Panther from England
« Reply #10 on: June 08, 2010, 09:06:11 PM »
Don't you have to be over 1350cc diplacement to run the class? Two 600cc engines add up to 1200cc in my math.

DW
White Goose Bar - Where LSR is a lifestyle
Alcohol - because no good story starts with a salad.

Don't be Karen, be Beth

Offline Calkins

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Re: Twin Engine Panther from England
« Reply #11 on: June 08, 2010, 09:16:58 PM »
and taking the bores out so i am total 1350cc.

Here ya go DW
Justin Calkins - Iowa Falls, Iowa  USA

Offline Stainless1

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Re: Twin Engine Panther from England
« Reply #12 on: June 08, 2010, 09:22:33 PM »
Last I looked, if you have 1200 you run in 1350, if you have anything between 1001 and 1350 you are 1350.  If you have more than 1350 you still could be OK due to the reconditioning rule...
Stainless
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Offline willieworld

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Re: Twin Engine Panther from England
« Reply #13 on: June 08, 2010, 09:24:34 PM »
to run in the 1350 cc class you will have to be under 1350 cc---not counting a .020 overbore and in vintage a .050 overbore        with 2 motors you can run in A   APS   SC   SCS and S  if the motor is a pushrod motor just add a P                    willie buchta
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Offline wobblywalrus

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Re: Twin Engine Panther from England
« Reply #14 on: June 09, 2010, 12:51:31 AM »
Will the English invasion be at BUB or Speedweek?  I will definitely figure out a way to get there, either way.