Topic: Morris 7 spoke

[bwaller]

I find these magnesium wheels challenge BobbyR's "Babe thread" just so we know how excited they make me! For a "senior" that's saying something. LOL

I have looked for a set in my sizes forever and always thought better. So now a set became available three hours from me (a friend had them squirreled away) and I actually know part of the history on these. 2.75"/3.5" exactly what I need. They are indeed 30+ years old, have not been crack tested. Price will reflect that.

A crack test is a must, but with wheels this age, how often should they be re-done? (my decision has been made)

So this is an unofficial poll from the guys with experience. YEAH OR NAY?

[754]

Man that is exciting, I never been able to land a Magnesium Morris.
Do you jean how often should you test ? Or repaint ?
 6 bolt ?

[bwaller]

How often should they be crack tested?

They're 6 bolt.

[simon#42]

i have never owned any morris wheels but have had plenty of dymags and campags etc . i used to religiously crack test them every year . after about 10 years none had failed so i stopped and just used them .  the only ones that ever cracked were accident damaged and you didnt have to test them to see that.  these wheels were all 35 plus years old and i have about 15 sets. the official advice is get them tested every year though !

[bwaller]

Thanks Simon, I just read an article that claimed Morris himself suggested checking very year.

I'm waiting on exact weights.

[RAFster122s]

Are they magnafluxed to test for cracks?

[seanbarney41]

Are they magnafluxed to test for cracks?

I would also like to know the answer to this as I have a set of magnesium Kimtabs that I would like to use.  Where could I have them tested?

[RAFster122s]

Many big motor machine shops have magnaflux testing setups...as far as locations for that kind of testing.


But the more I think about it you cannot magnaflux a magnesium wheel. It is non-magnetic.  You can penetrating dye test and x-ray them.


If you have white fuzz on a magnesium wheel it is oxidation and that means bad things. You can clean them up and then watch for oxidation formation after clean-up.  But only way to check for voids is through x-ray.

[scottly]

Correct, David. Also, to do a penetrating dye test for cracks, any paint must first be removed.

[turboguzzi]

just of curiosity Brent, what tires did you plan to use this year?

[bwaller]

TG, my rim sizes are 2.5 front, 3.5 rear. I have one fresh set of Avons left 110/80 and 130/70 to use first.

I bought only one set of Conti 3CR, 100/90 and 130/80 to try. They better be good, because I hate that they are so much heavier, and that the rear is much taller as well.

I looked seriously at Pirelli and Michelin, and have hope Bridgestone will offer a better tread pattern and sizes in time. The Michelin and Bridestones available now are basically slicks with a slight cut tread, no use in the rain. The Pirelli, according to Ric, are good but wear as quickly as the Avons.

There will be no conclusions gathered this season!

[Tim2005]

I've had Campags magnafluxed by an aviation place

[754]

They are not magnafluxing if  it's not magnetic.

[Tim2005]

Fair point. I wonder what process their equipment used? The job in the queue before mine was a genuine RR Merlin engine block. I suspect I took far more interest in that than anything else. Maybe they were x-raying them

[MRieck]

Zyglo or some other extremely messy process. Xray maybe.....Muzzy xrayed all he stuff....true. And...he ran all his race engines on the street to break them in. Fact