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Heavy Question

Moderators: Curt!, Pa

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HAWKEYE

Posts: 64

Joined: Wed Aug 09, 2006 1:41 pm

Location: Lancaster, SC

Post Mon Jul 07, 2008 9:00 pm

Heavy Question

Ok, I know I'm not the only big guy who rides these old hosses. How do you full figured guys keep your seats from bottoming out on the frame? 45 Restoration lists a 230 lb seat post plunger ( not springs ) but how does that keep you from bumping yer butt?
HAWK
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amklyde

Posts: 626

Joined: Fri Dec 19, 2003 1:01 am

Location: Wisconsin, USA

Post Tue Jul 08, 2008 7:57 am

Re: Heavy Question

There is a guy in Ohio that has spent considerable time working with spring combinations to suit your needs. His name is Steve Croft. The phone # I have for him no longer works. I'm sure he will be at the Wauseon AMCA meet coming up.
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Pa

Site Admin

Posts: 4754

Joined: Sun Mar 12, 2000 1:01 am

Location: Ohio USA

Post Tue Jul 08, 2008 10:07 am

Re: Heavy Question

I think Bruce Palmers book lists the part number combo for the springs also. Pa
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HAWKEYE

Posts: 64

Joined: Wed Aug 09, 2006 1:41 pm

Location: Lancaster, SC

Post Tue Jul 08, 2008 4:36 pm

Re: Heavy Question

I've ordered Bruce's book today. Maybe I won't have so many questions after it shows up...

According to 45 Restoration the 230lb plunger has heavy duty springs already installed, I got a reply e-mail from them today.
HAWK
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Pa

Site Admin

Posts: 4754

Joined: Sun Mar 12, 2000 1:01 am

Location: Ohio USA

Post Tue Jul 08, 2008 8:05 pm

Re: Heavy Question

Yes, this is true, but ??? you can put together one yourself, with the correct part numbers. Pa
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Jerry Wieland

Posts: 606

Joined: Mon Nov 01, 1999 1:01 am

Location: Menomonie, Wisconsin, USA

Post Tue Jul 08, 2008 9:14 pm

Re: Heavy Question

The heavy spring set was still available from HD not too long back ( less than 6 years). Not cheap though.

Jerry
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HAWKEYE

Posts: 64

Joined: Wed Aug 09, 2006 1:41 pm

Location: Lancaster, SC

Post Wed Jul 09, 2008 9:21 am

Re: Heavy Question

Ok, newbie question....will the 45 WL seat post fit a UL frame?? I can get a 45 H Duty seat post for nearly half what a one costs from V-Twin. The H Duty spring sets cost nearly what the 45 seat plunger set does too.
HAWK
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Chris Haynes

Posts: 2637

Joined: Wed Jul 05, 2000 12:01 am

Location: Los Angeles, CA

Post Wed Jul 09, 2008 7:46 pm

Re: Heavy Question

HAWKEYE wrote:Ok, newbie question....will the 45 WL seat post fit a UL frame?? I can get a 45 H Duty seat post for nearly half what a one costs from V-Twin. The H Duty spring sets cost nearly what the 45 seat plunger set does too.


Sure it will fit in there. With lots or room to spare as it is considerbly smaller than the Big Twin seat post.
Will it function properly? NO! :mrgreen:
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don

Posts: 554

Joined: Fri Oct 01, 1999 12:01 am

Location: Spokane WA USA

Post Wed Jul 09, 2008 8:59 pm

Re: Heavy Question

A 2 dollar bronze bushing reamed to fit a 45 seat post is what my 200 pound body rides on a 47 UL.
don
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45Brit

Posts: 1433

Joined: Tue Nov 27, 2007 2:29 am

Post Wed Jul 09, 2008 11:45 pm

Re: Heavy Question

I've used an additional spring outside the seat post before now, being a 230-pound retired prop forward ( = offensive centre, more or less, for our American friends ). It came from an old BSA girder fork and works just fine on 45s, don't know about Big Twins. You could use the 'buddy seat' additional springs, I suppose
Shoot, a man could have a good weekend in Dallas with all that stuff...
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Cotten

User avatar

Posts: 2680

Joined: Thu Sep 30, 1999 12:01 am

Location: Central Illinois, USA

Post Thu Jul 10, 2008 7:12 am

Re: Heavy Question

A common OHV outer valve spring works as 45Brit suggested, slipped over the post.

Has anybody ever tried putting a hydraulic seal in the bushing and tapping a Schrader valve into the zirque hole?
Or does that trick only work with dirt bike forks?

.....Cotten
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vld1200

Posts: 1

Joined: Thu Feb 21, 2008 10:03 am

Post Sat Jul 12, 2008 4:03 pm

Re: Heavy Question

I am 200 lbs. and used to bottom out on my '39 quite often. I took the seat post out, disassembled it and put a spring on top of the rebound spring inside the seat post. This keeps me from bottoming out and not have that valve spring showing on the outside of the seat post.

VLD 1200

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