Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
 


Reply
 
Thread Tools Display Modes
 
Old 10-22-2021, 07:40 AM   #21
Senior Member
 
Justgosurfin's Avatar
 
Join Date: Sep 2018
Location: @longjohnrose
Posts: 113
Yep. Pretty sure it was boywonder. I know heís gone super deep into this issue. Impressive R & D for sure
__________________

Justgosurfin is offline   Reply With Quote
Old 10-25-2021, 03:55 PM   #22
Senior Member
 
boywonder's Avatar
 
Join Date: Jul 2013
Location: So Cal
Posts: 3,501
Justgosurfin: If you've sleeved the tubes with DOM cro-mo, you can easily go two links..maybe three. The tough part is the initial lift-off, you need to space the helper springs accordingly. Start playing with it; it'll become obvious.


The SMB plates that hold the helper springs down can get kind of marginal when you start loading those springs up...so be careful.
__________________

__________________
2008 E350 RB passenger 4WD SMB penthouse
2013 KTM 350 EXC
2008 KTM 250 XCF-W
2000 KTM 200 EXC
2003 Honda Element
boywonder is offline   Reply With Quote
Old 10-25-2021, 06:12 PM   #23
Member
 
Join Date: Aug 2019
Posts: 33
Hey SurferDave, I've been reading through this and I've played around with my poptop and it's also a manual lift. I have Yakima crossbars with side mounts. Grampswrx mentioned the load balance and they're spot on. When I lift the top, if there's any weight imbalance, the tops is all kinds of cocked up. And if the springs aren't set up for a load, then it's a beast to lift. If it's setup for a load, then it's a beast to get down as well. For now, I only have WW kayaks up top and I take em off when I stop and camp for the night so I can pop the top.
I'm looking into a mechanical lift.
DFarkas is offline   Reply With Quote
Old 10-26-2021, 03:42 PM   #24
Senior Member
 
Justgosurfin's Avatar
 
Join Date: Sep 2018
Location: @longjohnrose
Posts: 113
Quote:
Originally Posted by boywonder View Post
Justgosurfin: If you've sleeved the tubes with DOM cro-mo, you can easily go two links..maybe three. The tough part is the initial lift-off, you need to space the helper springs accordingly. Start playing with it; it'll become obvious.


The SMB plates that hold the helper springs down can get kind of marginal when you start loading those springs up...so be careful.

Thanks. Iíll measure the blocks the previous owner had behind the helper springs but I believe they were about 2.5-3Ē. PO also had 1 link out. I think Iíll try that then potentially go to two.

I did finally find my plates and painted them. Iíll see if thereís a way to through bolt them down.
Justgosurfin is offline   Reply With Quote
Old 10-27-2021, 09:04 AM   #25
Senior Member
 
boywonder's Avatar
 
Join Date: Jul 2013
Location: So Cal
Posts: 3,501
Quote:
Originally Posted by Justgosurfin View Post
Thanks. I’ll measure the blocks the previous owner had behind the helper springs but I believe they were about 2.5-3”. PO also had 1 link out. I think I’ll try that then potentially go to two.

I did finally find my plates and painted them. I’ll see if there’s a way to through bolt them down.

If you through-bolt them down getting them off after an interior build may be challenging. I used Riv-nuts in the roof sheet metal, then subsequently went to a 2x4 piece of 1/4" AL angle (from McMaster). This allows fastening the short leg of the angle to the vertical part of the channel for a much more robust design.


If you really crank up the spring load those plates flex easily since one long end is sitting out there in the breeze.


I'm planning on further investigating using a combo of gas springs and the helper springs, and from earlier measurements I'll likely cut my helper springs down from 24" long to 12" long to double the spring rate. A couple of EB tops that I've played with had 12" long springs and those went up crazy easy (with nothing on the roof).
__________________
2008 E350 RB passenger 4WD SMB penthouse
2013 KTM 350 EXC
2008 KTM 250 XCF-W
2000 KTM 200 EXC
2003 Honda Element
boywonder is offline   Reply With Quote
Old 10-27-2021, 03:19 PM   #26
Senior Member
 
Justgosurfin's Avatar
 
Join Date: Sep 2018
Location: @longjohnrose
Posts: 113
Good call on the angle and rivenuts, Iíll take a look at the layout this weekend
__________________

Justgosurfin is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Sportsmobile SIP or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 09:23 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
×