Board index Flathead Power-Technical Questions, Answers, and Suggestions General Whatever-Technical 45' motor + Big-Twin gearbox

45' motor + Big-Twin gearbox

Pretty much anything not covered by the topics above. Short lived production bikes or vehicles, Electrical, Tires, Paint, Brakes, etc. Use this for tech questions, and "Shoot the Bull" for general conversation, no tech.

Moderators: Curt!, Pa

Post Wed Oct 29, 2008 6:09 am

Posts: 923
Location: South Provence of FRANCE


Post Wed Oct 29, 2008 1:34 pm

Posts: 1667
Location: Interlaken, NY USA

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

Post Wed Oct 29, 2008 3:15 pm

Posts: 923
Location: South Provence of FRANCE

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

Post Thu Oct 30, 2008 10:02 am
panic

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

Post Fri Oct 31, 2008 3:42 am
jib

Posts: 575
Location: devon,england
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

Post Fri Oct 31, 2008 1:26 pm

Posts: 923
Location: South Provence of FRANCE

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

maybe Jib's pic is a pic FROM Paughco ?

Post Sun Nov 02, 2008 6:03 pm

Posts: 923
Location: South Provence of FRANCE

i got a best pic today :

Image
Image

Post Mon Nov 03, 2008 11:12 am
panic

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

Post Thu Nov 06, 2008 4:35 pm

Posts: 199
Location: Cedar Springs Mi USA

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.

Post Fri Nov 07, 2008 5:06 am
jib

Posts: 575
Location: devon,england
looks like battery goes behind oil tank.
regards jib
Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years

Post Fri Nov 07, 2008 7:57 am
panic

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

Post Fri Nov 07, 2008 11:22 am

Posts: 767
Location: CA USA
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 .

Post Fri Nov 07, 2008 1:18 pm

Posts: 111
LOOKS LIKE ENGINE CENTER LINE IS TO THE LEFT OF THE FRAME. ASLONG AS THE SIDE STAND IS ON THAT SIDE IT COULD WORK.

Post Sat Nov 08, 2008 1:29 pm
panic

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

Post Sat Nov 08, 2008 1:35 pm
panic

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

Post Sun Nov 09, 2008 4:01 pm
jib

Posts: 575
Location: devon,england
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

Post Tue Dec 23, 2008 4:08 pm

Posts: 5
Location: Dresden, GERMANY
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

Image
Image

Image
Image

Post Thu Dec 25, 2008 10:28 am
panic

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

Post Sun Dec 28, 2008 10:21 am

Posts: 1646
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...

Post Sun Dec 28, 2008 2:40 pm
panic

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

Next

Return to General Whatever-Technical