Author Topic: Opinion Poll: Main bearing end feed conversion?  (Read 854 times)

Online Greybeard

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Please complete the poll up there ∆

Online beezermacc

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Re: Main bearing end feed conversion?
« Reply #1 on: 11.09. 2018 10:05 »
I have built six A10 engines with new timing side bushes, reamed by myself. None of these engines have shown any significant wear during use. My black A10 which I have done 10,000 miles on still sounds sweet.
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Online Greybeard

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Re: Main bearing end feed conversion?
« Reply #2 on: 11.09. 2018 10:28 »
I have built six A10 engines with new timing side bushes, reamed by myself.
Hmm, I may need to speak to you about this.

Online Greybeard

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Re: Main bearing end feed conversion?
« Reply #3 on: 11.09. 2018 10:29 »
I have built six A10 engines with new timing side bushes, reamed by myself. None of these engines have shown any significant wear during use. My black A10 which I have done 10,000 miles on still sounds sweet.
So, your vote would be a No?

Online bsa-bill

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Re: Main bearing end feed conversion?
« Reply #4 on: 11.09. 2018 10:32 »
do we always assume BSA fitted parts superior  to Wassel  ??
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Online Greybeard

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Re: Main bearing end feed conversion?
« Reply #5 on: 11.09. 2018 10:42 »
do we always assume BSA fitted parts superior  to Wassel  ??
Will you vote please Bill

Online KiwiGF

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Re: Main bearing end feed conversion?
« Reply #6 on: 11.09. 2018 10:46 »
do we always assume BSA fitted parts superior  to Wassel  ??

The (very) experienced machinest who did my engines bottom end reckoned the plain bush set up was fine for 100,000 miles for GFs, Super Rockets etc, but engines tuned to give significantly more power and revs than std would benefit from the roller conversion, not so much for longetivity but to avoid blow ups.

John does not know many A10 engines he’s line bored etc, but it’s over a hundred.

I know a guy who did 35,000 Miles on his GF, built by John, and when he had to strip it down (due to cam wear, he didn’t replace that  *problem* ) the big ends and mains were “as new” so left them alone and just replaced the cam and followers.
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Online bsa-bill

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Re: Main bearing end feed conversion?
« Reply #7 on: 11.09. 2018 10:49 »
Quote
Will you vote please Bill
Done
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Online BigJim

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Re: Main bearing end feed conversion?
« Reply #8 on: 11.09. 2018 11:03 »
Am probably the last person to comment here due to my mechanical incompetence. Someone has to be a PO. I was told, when i fell into A10 ownership, by someone who had owned British bikes that it was a worthwhile conversion. Lacking confidence in engineering/ maintenance but having decided the bike was a "keeper" i went for the srm work. Have done many miles, had a 19 year lay up,have put the bottom end back together this year (first time i have seen the crank). You spend your money and you takes your choice, i'm happy but would never try to change the mind of all the competent engineers who express opinions here.
 *work* *countdown* *good3*
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Online groily

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Re: Main bearing end feed conversion?
« Reply #9 on: 11.09. 2018 11:08 »
Done too.
Never had a prob with the bush  . . . but I said 'maybe' in case I ever wanted to ride an A like this: https://www.youtube.com/watch?v=OVUfg0HJY1k

'This' is the Vuelta a Cantabria, June version, in Spain a few years ago. One of the best events I have ever done (last year and this and for ever going forwards I hope). I did think that a main bearing upgrade could help in some circs - as the throttle cable on my A was being stretched quite a bit on the mountains to keep up with far more powerful machinery. But my poor humble beast doesn't go like that RGS, not by a country mile, however hard you try to pull the top off the carburettor.
Bill

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Re: Main bearing end feed conversion?
« Reply #10 on: 11.09. 2018 12:16 »
Lovely. Just like a BSAOC rideout!

Online BigJim

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Re: Main bearing end feed conversion?
« Reply #11 on: 11.09. 2018 12:22 »
Sorry to wander off topic bit the "Picos" are amazing and well worth a visit will go in May , if i can wait.
Jamie,  Supporter of Distinguished Gentleman's Ride

Offline a10gf

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Re: Main bearing end feed conversion?
« Reply #12 on: 11.09. 2018 13:22 »
Having had serious trouble due to bad workmanship (the 'experts' here only think they are), would consider a conversion as a good option, voting 'maybe' ftm, with the weight on the 'yes' side.

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Online RichardL

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Re: Main bearing end feed conversion?
« Reply #13 on: 11.09. 2018 13:32 »
(the 'experts' here only think they are)

I know I'm no expert, except, maybe, at knowing who here is.

Richard L.
Plan on signing up for the world-wide 2020 DISTINGUISHED GENTLEMAN'S RIDEon September 27, 2020 (if it's not cancelled and we are free to move about by then). Watch website at https://www.gentlemansride.com for details.

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Re: Main bearing end feed conversion?
« Reply #14 on: 11.09. 2018 14:23 »
Sorry to be nagging you about the poll. I can see the results now I'm on the desktop PC. I couldn't see them on my tablet.  *conf2*