[TR] Wheel Shimmy

[DLylis at aol.com]

I assume that the Morgan owners all have wire wheels?  Accelerating,  
although it may seem counterintuitive, actually makes sense.  Decelerating  
may/probably/will have the same effect.  I will bet that the vibration is  set up at 55 
- 60 mph and goes away as you accelerate through that.   This is a very 
common malady and can, and does, occur with steel wheels as  well.  This can be 
trued and balanced out.  This is a "harmonic"  set up at that rotational speed.  
Wouldn't you think that it would get  worse as the rotational speed increases? 
 For the most part it  doesn't.  I have had it at 55 - 60 but the car settles 
down as I approach  70 -80-90 mph.  The annoying part is that you drive most 
of the time at 55  - 60.  I have allowed myself some "wiggle room" in my 
statements because  sometimes the wheel is so far out that it does not conform to 
what I have said  here.
I am by no means an officianado on Morgans, in fact know very little about  
them.  What I recommend is that you call Alan Hendrix at Hendrix Wire  Wheel.  
NFI.  He talks for free.  He trues and balances for  cash.  He can help you 
understand this phenomenon, as he did with  me. 
He may confirm that Morgan has an inherent flaw that causes wheel shimmy,  
but I were a betting man I would bet not.  I may lose! 
 
David  Lylis
69 TR6 CC26160L
60 TR3A TS74461LO



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