Model 30 Con Rods
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Model 30 Con Rods
Following helpful advice from here (thanks again all) I stripped my engine down to find that I am now the proud owner of a very nice AJS Model 30 but with a cream-crackered drive-side con rod. Anyone have any idea where a replacement can be found? The AMOC spares scheme doesn't seem to have them. Cheers.
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Re: Model 30 Con Rods
Hi
Try AMC Classic
Regards Mick
Try AMC Classic
Regards Mick
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Re: Model 30 Con Rods
Cheers mick. Sent them an email.
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Re: Model 30 Con Rods
Hello William,
finally you are almost lucky: you can use interchangeably the connecting rods of 500, 600, and 650!
Preferably choose a workshop balancing the connecting rods and the crankshaft.
Kind regards.
finally you are almost lucky: you can use interchangeably the connecting rods of 500, 600, and 650!
Preferably choose a workshop balancing the connecting rods and the crankshaft.
Kind regards.
- dave16mct
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Re: Model 30 Con Rods
I'd phone rather than email. They take a very long time to answer emails as they get so many.
Dave.
Dave.
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Re: Model 30 Con Rods
Thanks all.yet again!
Thunder engineering got back to me. They look good if a trifle pricey. Maybe worth it however. Does anyone have experience of their products
Thunder engineering got back to me. They look good if a trifle pricey. Maybe worth it however. Does anyone have experience of their products
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Re: Model 30 Con Rods
Top product. Have them in my Mod 31 on a club new crank, and have another pair and another new crank in the wings.
Maybe a bit OTT if you only need one, but on the other hand, depending how many ££ you actually have to invest in the rebuild, the cost may seem reasonable.
If you do find second-hand, I'd have it crack-tested and checked for ovality at the big end (and trued up if necessary). I wouldn't just fit it.
Maybe a bit OTT if you only need one, but on the other hand, depending how many ££ you actually have to invest in the rebuild, the cost may seem reasonable.
If you do find second-hand, I'd have it crack-tested and checked for ovality at the big end (and trued up if necessary). I wouldn't just fit it.
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Re: Model 30 Con Rods
Thanks again. Mulling it over!
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Re: Model 30 Con Rods
Latest, 2nd hand rod from AMC. Oval, although to be fair they were up front and said sold as is and I could check first. A bit tricky with me being 100s of miles away.. Anyhoo. Local precision engineer (a classic bike enthusiast himself - pre WW1 Harleys and Indians) checked the crank. Oval journals. One side worse than the other. I decided rather than machine the 50 quid 2nd hand rod, I will go for new Thunder Engineering. Question. Where can I get the serviceable dimensions of the journals and can I get undersized shells? Sorry if daft questions.
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Re: Model 30 Con Rods
http://archives.jampot.dk/book/Workshop ... CHABLE.pdf
See page 24.
And Yes, most sizes, most of the time. From Club. Or AMC Classic Spares, etc.
PS Radii, radii, radii. Critical they be retained. If in doubt, go to people such as T&L Engineering, see ads in Jampot mag, who do these all the time and will tell you if the crank can safely be reground or is a doorstop. Many of us have some of each. Loss of radius = Breakage Very Likely, so has to be done right.
See page 24.
And Yes, most sizes, most of the time. From Club. Or AMC Classic Spares, etc.
PS Radii, radii, radii. Critical they be retained. If in doubt, go to people such as T&L Engineering, see ads in Jampot mag, who do these all the time and will tell you if the crank can safely be reground or is a doorstop. Many of us have some of each. Loss of radius = Breakage Very Likely, so has to be done right.