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Heavy Question

Moderators: Curt!, Pa

Post Mon Jul 07, 2008 9:00 pm

Posts: 64
Location: Lancaster, SC
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

Post Tue Jul 08, 2008 7:57 am

Posts: 640
Location: Wisconsin, USA
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.

Post Tue Jul 08, 2008 10:07 am
Pa Site Admin

Posts: 5802
Location: Ohio USA

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

Post Tue Jul 08, 2008 4:36 pm

Posts: 64
Location: Lancaster, SC
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

Post Tue Jul 08, 2008 8:05 pm
Pa Site Admin

Posts: 5802
Location: Ohio USA

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

Post Tue Jul 08, 2008 9:14 pm

Posts: 607
Location: Menomonie, Wisconsin, USA
The heavy spring set was still available from HD not too long back ( less than 6 years). Not cheap though.

Jerry

Post Wed Jul 09, 2008 9:21 am

Posts: 64
Location: Lancaster, SC
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

Post Wed Jul 09, 2008 7:46 pm

Posts: 2687
Location: Los Angeles, CA
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:

Post Wed Jul 09, 2008 8:59 pm
don User avatar

Posts: 574
Location: Spokane WA USA
A 2 dollar bronze bushing reamed to fit a 45 seat post is what my 200 pound body rides on a 47 UL.
don

Post Wed Jul 09, 2008 11:45 pm

Posts: 1654
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...

Post Thu Jul 10, 2008 7:12 am

Posts: 3133
Location: Central Illinois, USA
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

Post Sat Jul 12, 2008 4:03 pm

Posts: 1
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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