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45' motor + Big-Twin gearbox

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milwaukee belle

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Location: South Provence of FRANCE

Post Wed Oct 29, 2008 6:09 am

45' motor + Big-Twin gearbox

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Frankenstein

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Location: Interlaken, NY USA

Post Wed Oct 29, 2008 1:34 pm

Re: 45' motor + Big-Twin gearbox

Fran-6, think you could fit a Magnum in that frame? Local boy in the neighborhood built himself a Magnum this summer and has fitted it in an aftermarket bigtwin frame with the 4 speed. Could have saved himself a lot of work with one of those frames! :D
DD
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milwaukee belle

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Location: South Provence of FRANCE

Post Wed Oct 29, 2008 3:15 pm

Re: 45' motor + Big-Twin gearbox

I don't know , Frank : i was just giving the info for somebody , someday , maybe intérressed ...who knows ?
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panic

Post Thu Oct 30, 2008 10:02 am

Re: 45' motor + Big-Twin gearbox

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Last edited by panic on Mon Jan 19, 2009 6:31 pm, edited 1 time in total.
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jib

Posts: 573

Joined: Sat Dec 10, 2005 3:36 pm

Location: devon,england

Post Fri Oct 31, 2008 3:42 am

Re: 45' motor + Big-Twin gearbox

another picture of frame. regards jib.

http://biltwellok.blogspot.com/2008/10/ ... mount.html
Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years
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milwaukee belle

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Location: South Provence of FRANCE

Post Fri Oct 31, 2008 1:26 pm

Re: 45' motor + Big-Twin gearbox

notice the springer !
it's under construction ....just tack-welded .

maybe Jib's pic is a pic FROM Paughco ?
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milwaukee belle

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Joined: Thu Jul 24, 2003 12:01 am

Location: South Provence of FRANCE

Post Sun Nov 02, 2008 6:03 pm

Re: 45' motor + Big-Twin gearbox

i got a best pic today :

Image
Image
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panic

Post Mon Nov 03, 2008 11:12 am

Re: 45' motor + Big-Twin gearbox

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Last edited by panic on Mon Jan 19, 2009 6:32 pm, edited 1 time in total.
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fabercycle

Posts: 195

Joined: Fri Apr 15, 2005 12:01 am

Location: Cedar Springs Mi USA

Post Thu Nov 06, 2008 4:35 pm

Re: 45' motor + Big-Twin gearbox

According to the "Industry rumor mill" that frame was a product of a request from Ron Perewitz, for a project he did. Paugco used their basic "boardtracker big twin" parts and applied to to the 45. Apparently it's available to the public at approximately 998.00 retail. Panic's right...not a real confidence building pic....where's the battery go? no provision for footpegs or controls. Better to start off from scratch.
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jib

Posts: 573

Joined: Sat Dec 10, 2005 3:36 pm

Location: devon,england

Post Fri Nov 07, 2008 5:06 am

Re: 45' motor + Big-Twin gearbox

looks like battery goes behind oil tank.
regards jib
Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years
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panic

Post Fri Nov 07, 2008 7:57 am

Re: 45' motor + Big-Twin gearbox

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Last edited by panic on Mon Jan 19, 2009 6:33 pm, edited 1 time in total.
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Beachdog

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Joined: Mon Oct 16, 2000 12:01 am

Location: CA USA

Post Fri Nov 07, 2008 11:22 am

Re: 45' motor + Big-Twin gearbox

From everything I've read so far I'd guess that the primary drive is by belt with a custom made pulley on the motor. Not a difficult creation for a high end custom shop with cnc capabilities or a small guy who farms out the job.
See Brews bike at this link:
http://www.amdchampionship.com/content. ... number=070 .
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X-WLCH

Posts: 111

Joined: Wed Apr 30, 2008 12:16 pm

Post Fri Nov 07, 2008 1:18 pm

Re: 45' motor + Big-Twin gearbox

LOOKS LIKE ENGINE CENTER LINE IS TO THE LEFT OF THE FRAME. ASLONG AS THE SIDE STAND IS ON THAT SIDE IT COULD WORK.
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panic

Post Sat Nov 08, 2008 1:29 pm

Re: 45' motor + Big-Twin gearbox

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Last edited by panic on Mon Jan 19, 2009 6:33 pm, edited 1 time in total.
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panic

Post Sat Nov 08, 2008 1:35 pm

Re: 45' motor + Big-Twin gearbox

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Last edited by panic on Mon Jan 19, 2009 6:34 pm, edited 1 time in total.
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jib

Posts: 573

Joined: Sat Dec 10, 2005 3:36 pm

Location: devon,england

Post Sun Nov 09, 2008 4:01 pm

Re: 45' motor + Big-Twin gearbox

what about using a right side drive box,then it would look like a proper 45 too,and the engine could be central ?regards jib
Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years
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dr. opossum

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Joined: Sun Dec 21, 2008 8:35 pm

Location: Dresden, GERMANY

Post Tue Dec 23, 2008 4:08 pm

Re: 45' motor + Big-Twin gearbox

I've struggled with this problem the last 4 years. I know I can't tell anyone of You guys something new, but may be I can make a little contribution.

After hundrets of sleepless nights I believe, like Panic said, a good solution is to move the engine to the left. I've done it by about 1 3/16" and placed the gear box about 3/8" to the left of the centerline. The front pulley is as close as possible to the engine case and the rear chain is exactly aglined and keeps enough clearance to the tire.
The only tradeoff in this whole agliment is the large offset of the rim (about 7/16" to the left, using a H.-D. dual flange hub) to get the tire (120/70) in the middle of the frame. This could be avoid by a larger engine&tranny offset, another hub and non dished sprockets

The engine doesn't run at the moment, so I can't say if everything really works. I just wanted to say thank you to all of You for the huge knowledge and help in this board which I follow since years. Greetings, Andre

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panic

Post Thu Dec 25, 2008 10:28 am

Re: 45' motor + Big-Twin gearbox

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Last edited by panic on Mon Jan 19, 2009 6:35 pm, edited 1 time in total.
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45Brit

Posts: 1422

Joined: Tue Nov 27, 2007 2:29 am

Post Sun Dec 28, 2008 10:21 am

Re: 45' motor + Big-Twin gearbox

I would put this whole issue under a big, fat WHY?? A BSA or Triumph gearbox will handle anything a 45 can deliver, a Norton box if you want more strength... anything else is just making work for the sake of it
Shoot, a man could have a good weekend in Dallas with all that stuff...
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panic

Post Sun Dec 28, 2008 2:40 pm

Re: 45' motor + Big-Twin gearbox

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Last edited by panic on Mon Jan 19, 2009 6:35 pm, edited 1 time in total.
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