Author Topic: Another vintage project from Great Britain, target Speed Week 2011  (Read 133762 times)

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Offline oz

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Re: Another vintage project from Great Britain, target Speed Week 2011
« Reply #120 on: April 10, 2011, 02:29:07 AM »
Very tidy nicely done dude!!
Newcastle born and bred a City built on Coal and Steel and a people built of stronger stuff

Offline Peter Jack

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Re: Another vintage project from Great Britain, target Speed Week 2011
« Reply #121 on: April 10, 2011, 04:26:21 AM »
Patrick, check your messages.

Pete

Offline 38flattie

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Re: Another vintage project from Great Britain, target Speed Week 2011
« Reply #122 on: April 10, 2011, 07:11:28 AM »
Looking good Patrick!
With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

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Offline thefrenchowl

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Re: Another vintage project from Great Britain, target Speed Week 2011
« Reply #123 on: April 16, 2011, 06:57:45 AM »
Hi all,

Yes, it's starting to look like a bike, not just an engine in a frame with loads missing...

Thought I would show you today where I do the built!!! The garage is about 7.5 feet wide by 30 feet long, split in 2, "storage" and "workshop"... So a bit on the small side!!!





I finished the rear exhaust pipe yesterday evening, went to bed at about 1am, but up early today and, sunny outside, time to wheel it out to see if it looks OK from a distance... Also fitted the race numbers.









Did about 1/2 of the intake manifold this morning, it's better with the new TIG torch, but not that much!!! I suppose practice makes perfect, I'll get there in the end...

See you later!!!

Patrick
« Last Edit: April 16, 2011, 07:00:00 AM by thefrenchowl »
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Offline saltwheels262

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Re: Another vintage project from Great Britain, target Speed Week 2011
« Reply #124 on: April 16, 2011, 09:46:59 AM »
patrick,

meant to mention--

if you have a lack of fuel issue, you can machine a
float bowl extension using a float bowl gasket as a template.
we used to make them a good 1.5" wide. not sure how
close the rear wheel spokes are.

is that an s&s float bowl?

franey
bub '07 - 140.293 a/pg   120" crate street mill  
bub '10 - 158.100  sweetooth gear
lta  7/11 -163.389  7/17/11; 3 run avg.-162.450
ohio -    - 185.076 w/#684      
lta 8/14  - 169.xxx. w/sw2           
'16 -- 0 runs ; 0 events

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Offline bak189

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Re: Another vintage project from Great Britain, target Speed Week 2011
« Reply #125 on: April 16, 2011, 11:03:48 AM »
Looking great, I just love the "old" Harley's.........Keep in mind the Tom Evans (SCTA Tech) might require you to have a cover/shield over the blower belt..............................
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Offline ol38y

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Re: Another vintage project from Great Britain, target Speed Week 2011
« Reply #126 on: April 16, 2011, 11:09:17 AM »
Yeah, very nice. Keep in mind at Bville, running out of fuel is common in gravity feed fuel systems. Be sure you have a very good vent on your tank and less restrictive fuel lines.

Look forward to seeing your bike on the salt.  :cheers:
Larry Cason
Bakersfield,CA    It's a dry heat!

2010 BUB 1350 M-PG record
2012 Speedweek  1350 A-PG record 169.975
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Offline thefrenchowl

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Re: Another vintage project from Great Britain, target Speed Week 2011
« Reply #127 on: April 16, 2011, 08:08:49 PM »
Quote
saltwheels262: is that an s&s float bowl?

Yes, good old S&S MGAL with side bowl... I will ask Tom Evans if it's OK to pressurise the fuel tank... cause room is limited for float chamber extension!!! I will also do a fuel flow rate test once my 3/8 feed pipe is installed... I need the fuel to flow somewhere around .8 to 1 litre per minute.





Quote
bak189: Tom Evans (SCTA Tech) might require you to have a cover/shield over the blower belt

Even if Tom will not insist on a belt cover, I still value me left leg, so I'll make one later!!!

Quote
ol38y: Look forward to seeing your bike on the salt

I'm doing me best!!!

Ran out of TIG tungsten rods AND S/S filler rods, so worked on other things this afternoon... Got the rear wheel out to clean, did a grinding/filling job on the Ansin bearings shield since it's in the way of the belt bracket and worked on my drive ratios/piston speed/speed calcs excel spread sheet to see what's the best sprocket combination to use... Hum, too many permutations!!!

Thanks for your interest, all the very best from Patrick...
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Offline grumm441

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Re: Another vintage project from Great Britain, target Speed Week 2011
« Reply #128 on: April 17, 2011, 03:41:00 AM »
Patrick
I'm pretty sure Tom will require you to run a belt cover on the blower belt
Although there is nothing specific in the rule book

As for the fuel pump, why don't you run a vacuum pump off a Ducati
G
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https://www.dlra.org.au/rulebook.htm

Offline Koncretekid

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Re: Another vintage project from Great Britain, target Speed Week 2011
« Reply #129 on: April 17, 2011, 09:27:52 AM »
Harleys don't vibrate, right?  If this were a BSA single, with all that rigid tubing from motor to blower, and from blower to carburetor, the motor would find someway to get away from the attachments!  A rubber hose connection here and there might be a good idea.
Tom
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Offline thefrenchowl

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Re: Another vintage project from Great Britain, target Speed Week 2011
« Reply #130 on: April 17, 2011, 01:59:17 PM »
Hi, Koncretekid

Yes, Harley vibrate, :) ... but not in the way Brit bikes vibrate!!! I well remember a winter trip to one of these die hard rallies in the 70s as the frozen and numbed passenger of a friend's Velo Venom... :)

The plenum is already split in two and the carb manifold will be as well in due time when I know how far away the carb will be.

grumm441, what are they driven off, these Dukes fuel pumps? If it's from a battery, forget it, I haven't got one on the bike... Old Guzzi racers with side saddle tanks use to have one actuated by the swing arm, neat idea...

Patrick
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Offline 38flattie

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Re: Another vintage project from Great Britain, target Speed Week 2011
« Reply #131 on: April 18, 2011, 07:11:55 PM »
Patrick, the build looks real trick! :cheers:

All the Duke pumps I've seen have been electrical. How about a small gear driven or belt driven mechanical pump, like an Enderle or similar? Looking at your fab capabilities, I don't think making a drive for the pump would be a problem!

I've got one for a 3-71/4-71 blower, and I think you might even be able to rig a speedo cable to it and run it.

I'll send it to you, if you decide to go that route.
With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead. -- RFC 1925

You can't make a race horse out of a pig. But if you work hard enough at it you can make a mighty fast pig. - Bob Akin

http://www.flatcadracing.org/
http://youtu.be/89rVb497_4c

Offline panic

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Re: Another vintage project from Great Britain, target Speed Week 2011
« Reply #132 on: April 18, 2011, 11:12:53 PM »
Do you have enough pressure cycling in the case to use a snowmobile (diaphragm) pump?

Offline Nortonist 592

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Re: Another vintage project from Great Britain, target Speed Week 2011
« Reply #133 on: April 19, 2011, 12:55:28 AM »
Patrick,  It looks very handsome.  I would definitely make a guard for the blower drive belt.  I would bet money that Tom will ding you on that.  Although there is nothing specific in the rules I would guess that rules 7.B.22 and 7.H.22 might be quoted.  Far better to have the belt covered than to get to Bonneville and have to scramble to make a cover.
Get off the stove Grandad.  You're too old to be riding the range.

Offline RidgeRunner

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Re: Another vintage project from Great Britain, target Speed Week 2011
« Reply #134 on: April 19, 2011, 07:32:49 AM »
Do you have enough pressure cycling in the case to use a snowmobile (diaphragm) pump?

I do know pulses from the exhaust pipe will run a snowmobile diaphram carb on a 4 stroke single.  Helped to prime it for starts though. 

Have no idea how much pressure would build with a separate diaphram pump for the volume required for this application.

                           Ed