TiLite ZRA turns right...Help!!!!!!

[Dei8rn]

I got a new ZRA about 6 weeks ago. Love the chair. Was ordered by a DME but I told him what I wnted measurements to be. Happy with it, Especilly since it's my first time ordering my own chair.

Anyway, when I push the chair it veers right. Have had two sets of rear wheels on chair because I ordered w/standard wheels and ordered spinergy lx's seperate. So I know it's not tire inflation or bearing adjustment. Front casters seems to spin equally free. Only thing I can find wrong is camber. Toe is ok actually toe out in front by not quite 1/8th. but looking at front of chair, the right tire leans in 3/8th less than left. The chair was ordered with 2 degrees camber and both camber plates (that slide in camber tube) are stamped with a 2. If I turn the camber tube it will chamge camber but, both will change equally......right? axle brackets are same distance from rear of seat tubes because seat back bolt goes through the back bracket.

Any suggestions, or pointers. What am I doing wrong, missing.

Thanks,
Roger

[DaleB]

have you tried rolling it without being in it? if not, i would try that.

i thought i had a left hand veer for the first month or so until i realized i was pushing only slightly harder with my right (dominant) arm.

when mine was pushed equally from middle of rigidizer bar, on a flat hard surface (basketball or tennis court comes to mind), it went fine.

it does sound like your camber tube may be out of whack, but you're correct - the tilite camber tube is a one piece design.

have you checked for a floating caster? that can cause a pull also.

also - due to a unbalance between my right and left strengths i tend to twist in the seat. once i twist i tend to pull the chair off course after each push. which is no good .

lastly - 1/8" toe out is acceptable? i dunno about that...i don't ever stop until i get mine perfect. every fraction of an inch counts in wheelchair setup, IMO.


good luck!

dale

[fuentejps]

call tilite. sounds like toe tweak needed.

1st check those rear bearings for slop/wiggle. also check tightness on everything on the chair. could have lose bolt somewhere

[Dei8rn]

Daleb, Yes, rolled with nobody in chair, still veers, I can be in Wal-Mart and push with just my right hand and by the end of the coast, chair is turning right again all the way through the store. Tilite owners manual says within 1/8" no adjustment needed. will chec for floating caster.

Fuentejps, Will check rear bearings again and all bolts again but has done since first day I got it with both sets of rear wheels and first set I even switched sides cause after 2nd day realized tires were direction and on wrong side.

Anything else and thanks for replies.

[Foolish Old]

Slight rack in frame? I don't know much about the monotube frames, but seems like a possibility.

[triedandconvicted]

[quote=Dei8rn]I got a new ZRA about 6 weeks ago. Love the chair. Was ordered by a DME but I told him what I wnted measurements to be. Happy with it, Especilly since it's my first time ordering my own chair.
Only thing I can find wrong is camber. Toe is ok actually toe out in front by not quite 1/8th. but looking at front of chair, the right tire leans in 3/8th less than left. The chair was ordered with


Theres more camber on the left wheel,so it's pushing the chair to the
right,must be the camber bar alignment,

[VanderHooch]

Don't know if you got in touch with TiLite yet, but if not, this is what i got from them:

Have them check to make sure the camber plates are even front to back one side to the other. If off, have them adjust the discrepancy accordingly.

Have them also check and make sure the same number of holes are showing at the base of both axle plates. If off, have them adjust the discrepancy accordingly.

If these are not the issue, have them check to see if their caster swivel is too loose. If so, it can result in a veer because the fork, in relation to the caster stem, will slightly lean. On a standard fork they can adjust their caster tension with the nut at the pivot point of the fork where the stem goes through the fork… warn them to avoid over tightening this nut. Also have them ensure their caster are square to the floor. Like with any new chair, after 6 weeks these last two issues can crop up as the chair “settles”.

All these adjustments should be done by a qualified WC tech or at least checked by one if the work is done by the end-user themselves.

[Hype62]

I thought each chair Tilite makes go through some rolling alignment test before shipping the chairs. I remember watching that Made in America show on the Travel channel where they featured the Tilite Comapny, and there was a scene where some dude was testing the wheel alignment of a chair, rolling it down a ramp to make sure the alignments are correct. I guess that dude wasnt doing his job then!

[MADPRODUCER]

It needs a front alignment. Take it to midas. j/k

[Dave_69]

Check to see if your caster stems are perpendicular to the rolling surface (floor). Check to see if one caster is off the surface on a perfectly flat or level surface (I have actually checked mine on a large piece of plate glass). This would cause a warp or torque in the frame when bearing weight. Check your toe-in. You should have slight toe-in just like on a car. "but looking at front of chair, the right tire leans in 3/8th less than left" This is troubling. Try to correct this. I had this problem with a previous chair and it was due to a caster that needed to be slightly lower.

Good luck.