I called Torklift today and had a good conversation with them.
They offer 2 different width frames, a 27.5" and a 25.5". The part I did not realize is, the step tread does not change between the 2 sizes, only the mounting frame. The tread width is 22" for both sizes.
I can fit the 25.5" frame inside my Hickory Springs 27.25" (ID) welded on frame. Yeh!!! I may have to trim a few bolts that have excess thread extension, Or drill a clearance hole for them in the side of the old step frame, but that beats grinding out 14" of weld... And I can also convert back to the old steps if we ever decide to sell this camper.
I also figured out the range of vertical adjustment of the system between the phone call and the manual. The service rep gave me the login info to be able to download the install/user manual and that helped a lot too.
The pivot lever on the top step has 3 positions. Hi, medium and low. Reading the instructions, medium is the normal location. Going to the hi setting allows 2" of height lift to the stairs. Going to the low position lowers 2" of drop stairs. This translates into 4" of overall step height change from the top mounting system.
The bottom landing pads have the ability of +/- 1.5" of adjustment where the foot and extend/retract creating 3" of total adjustment on the landing pads.
This is how they get what they call 7" of height adjustment.
I ordered a set of the A8104 25 1/2" wide 4 step Glow Step Revolution units today from Etrailer. I'm on the edge of a 3 step or 4 step unit. After looking at the pricing, I can delete a step a lot cheaper then adding one later. When I get it installed I can sort out the 3 or 4 steps as at the camps we go to, I am more often using our extra separate riser step. You can convert it as needed and if this camper does not need the 4 step, the next one most likely will.
They offer a lifetime warranty to the original purchaser which is good and they are made in the USA. We will move them to the next camper if and when the time comes.
I want to thank everyone again for all your help. I will do up a post on the install when the time comes.
Thanks
John
