Can I ask why you didn't put some 10 thou spacers under the ears of the carb while it was in the new jig/press (once you realised it wasn't going to flatten completely)? Surely that would have taken care of any "spring" in the metal and would have resulted in lees finishing later.
Hi Peter, that is a great point and I agree. We did talk about that afterwards. We thought we could have even better to put some shims on both sides. I’ve heard about that technique. It probably would’ve helped. Thankfully, I didn’t have to shave too much off on the surface plate. Best wishes.
I've followed John Healy on various Brit bike forums for years. Even met him in person at Barbers. Just a great guy and a tremendous resource. If you want something right following his advice is the way to go.
Very nicely done, Mike. I'm not a fan of new carbs when the original can be saved. We enjoyed temps in the 60's and even low 70's last month, but winter has finally arrived here. Looking forward to your 2024 videos. Thanks for posting.
Many thanks Rod. Yes I’m hoping that it will work just fine on the bike. I struggled for years with my monobloc on the Triumph T110 and finally got a new one but hopefully this one is in better shape.
Just discovered your channel, Mike. One of the best channels for classic bike enthusiasts: your step by step restoration videos are giving me the confidence to buy my first classic and do it up. Look forward to the next episodes.
Thanks a lot for your kind comment. Glad you are enjoying the videos. Yes, I agree. I love watching machinists on UA-cam and it was a thrill to go out to Bob‘s place to see him work. His workshop is amazing! Best wishes, Mike.
Just an amazing video, Mike. The engineering elements defy imagination for an English major like me. Fascinating in every facet. Thanks so much. I am thoroughly flabbergasted. :o)
It's always worth a try, as in my book we are always learning Mike. It's so easy to say 'I'd fit a new carb' or maybe just a s/h body' .. 😅 Petrol/gas tank looks to be sorted .. 😉atvb t .. 🏍
Greetings from Wisconsin! Well done, that carb looked like a goner! It was wise to bend the soft metal back to preserve as much as possible. I use my granite surface plate to check and flatten every surface that is supposed to be flat, from carb bowls to primary covers 😉
That warped means its worn all over. I read a release that Amal said that their carbs are part of routine maintenance and should be replaced after a period. No matter how much you refurbish it, it'll never be new again
An interesting attempt at preserving a distorted and damaged flange. I think l would've ordered a new Premier Amal Concentric but l applaud the repair ethos.
Great info! Considering this for a 689 I'd like to save. I didn't notice in the vid; You made the jig out of aluminum stock? The article says alloy which is common for aluminum but there are other alloys. Been mulling this over since you published the vid, but times a wasting the 689 has been taking up bench space for months😂
Hi Mike. Another great video! I use Evaporust (v expensive in UK) and would have expected it to be the colour of weak tea after first use. The rust in the tank should have turned dark, and it doesn’t seem so. Try a longer exposure?
Enjoyed that Mike, took me back to my scientific instrument apprentice tool making days in the 60’s. As a matter of interest why didn’t you machine the flange flat? (May have needed the o ring groove machining too)..🇬🇧
That’s a great question Neil. We did talk about putting the carburetor on Bob’s surface grinder, but he said it would take quite a while to set up (to make it completely level) and also we were a bit nervous about damaging the lips around the flange as they are already pretty weak. Yes, I agree with Dave below that the other benefit was that using this jig did actually help with the roundness of the bore. Best wishes, Mike
Can I ask why you didn't put some 10 thou spacers under the ears of the carb while it was in the new jig/press (once you realised it wasn't going to flatten completely)? Surely that would have taken care of any "spring" in the metal and would have resulted in lees finishing later.
Hi Peter, that is a great point and I agree. We did talk about that afterwards. We thought we could have even better to put some shims on both sides. I’ve heard about that technique. It probably would’ve helped. Thankfully, I didn’t have to shave too much off on the surface plate. Best wishes.
Unbelievable skill on display here. I'd love to visit Bob's and just breathe in the wisdom and expertise.
Many thanks, yeah we had a great time over at Bob’s. I love watching machinists at work and follow several channels on UA-cam. Best wishes, Mike
I've followed John Healy on various Brit bike forums for years. Even met him in person at Barbers. Just a great guy and a tremendous resource. If you want something right following his advice is the way to go.
Good stuff. Every motorcyclist needs a ‘Bob’ as a friend or contact! lol. Whichever motorcycle Bob likes to work on, is the one I would get.
Very nicely done, Mike. I'm not a fan of new carbs when the original can be saved. We enjoyed temps in the 60's and even low 70's last month, but winter has finally arrived here. Looking forward to your 2024 videos. Thanks for posting.
Many thanks Rod. Yes I’m hoping that it will work just fine on the bike. I struggled for years with my monobloc on the Triumph T110 and finally got a new one but hopefully this one is in better shape.
Once again Mike...a Sunday evening here in Australia and you capping off the weekend beautifully. Cheers mate.
Yeah, I use Mike's videos to mark the passing of the weekend.
I love watching Machine Shop vids. I've worked in one since 1978 and you have to come up with solutions like this all the time. Nice vid.
Just discovered your channel, Mike. One of the best channels for classic bike enthusiasts: your step by step restoration videos are giving me the confidence to buy my first classic and do it up. Look forward to the next episodes.
Many thanks for your kind comment! I really appreciate it. I’m glad you enjoyed the videos. Best wishes, Mike
Excellent work Mike. You are making fantastic progress.. it's great to see a skilled engineer/ machinist at work.
Thanks a lot for your kind comment. Glad you are enjoying the videos. Yes, I agree. I love watching machinists on UA-cam and it was a thrill to go out to Bob‘s place to see him work. His workshop is amazing! Best wishes, Mike.
Thanks Mike, enjoyed your clip with my Sunday morning cuppa.
My pleasure
Hey, Mike, great work again! Greetings from northern Germany Manfred
Great stuff, Mike. I'm sure it was a tense moment tightening that jig down, watching the ears bend on that carb. 😬
Hee hee, yes, I must say I was a little nervous. I think you could tell as I just start talking instead of doing 😀😀
Arrr. Great to have a mate with a lathe and mill! Perfect result.
Great stuff. You can't help but be impressed by people's knowledge and abilities, hey.
Just an amazing video, Mike. The engineering elements defy imagination for an English major like me. Fascinating in every facet. Thanks so much. I am thoroughly flabbergasted. :o)
Wow, I probably would have scrapped that carb. That pretty cool to see it being fixed. Hope it runs great!
Me too! It ran really well when I first kicked it over, so I’m hoping that it will be even better! Hope I didn’t disturb too much. :-) best wishes.
It's always worth a try, as in my book we are always learning Mike. It's so easy to say 'I'd fit a new carb' or maybe just a s/h body' .. 😅
Petrol/gas tank looks to be sorted .. 😉atvb t .. 🏍
Great to see the progress Mike! We have some great local talent to help us with our bikes!!!
Thank you, Dan, yes Bob is a lifelong career machinist and is extremely talented. We are very lucky to have him in our club. Best wishes, Mike.
Good job!! George from Hungary
Thank you, George, cheers, Mike
Very interesting video and interesting job on the carb, thank you . 11.55 in Sweden
Hej och tack, Hans! Best wishes, Mike
👍 happy riding new year on the A10 !
Many thanks, happy New Year’s to you too! Best wishes
Superb video and workmanship!
Nice work Mike, keep up the great work and videos!
Hi Chuck, I hope you are both doing great! All the best for 2024! Cheers, Mike
I have half a recollection that those low temperature "alumi-weld" rods will work on the zinc based casting alloy.
But double check !!
Greetings from Wisconsin! Well done, that carb looked like a goner! It was wise to bend the soft metal back to preserve as much as possible. I use my granite surface plate to check and flatten every surface that is supposed to be flat, from carb bowls to primary covers 😉
Many thanks John. I really like that surface plate. It has been a great tool for the home garage. Best wishes, Mike
If the slides are worn out you should have the guy machine those to fit steel Mukuni slides in. Cheers
Great stuff
Very interesting video. I keep wondering how I could have restored bikes before I got my own lathe...
Fantastic job.
Beautiful work
Thanks a lot Robert. Hopefully it will work well on the bike. Best wishes, Mike.
NICE VIDEO MIKE.!!!!!!😮😮
Many thanks! Best wishes, Mike
That warped means its worn all over. I read a release that Amal said that their carbs are part of routine maintenance and should be replaced after a period. No matter how much you refurbish it, it'll never be new again
Also recommend a fibre spacer to reduce heat transfer from the head to the carb. But I'm sure you know far more about this than me😊
An interesting attempt at preserving a distorted and damaged flange.
I think l would've ordered a new Premier Amal Concentric but l applaud the repair ethos.
Nice carb rebuild, hope it works. Amal are still making carburettors in England. I bought a new Monobloc for my Super Rocket, £300 including taxes🚀.
Wow ! What a workshop eh Mike . Did I hear a mild-Aussie-accent in the background ? Dave
hehe, you did indeed Dave. Yes, that's my mate Geoff from Australia! He and his bikes have featured in many of my vids. Best wishes, Mike
Great info! Considering this for a 689 I'd like to save. I didn't notice in the vid; You made the jig out of aluminum stock? The article says alloy which is common for aluminum but there are other alloys. Been mulling this over since you published the vid, but times a wasting the 689 has been taking up bench space for months😂
amazing .
Hi Mike. Another great video! I use Evaporust (v expensive in UK) and would have expected it to be the colour of weak tea after first use. The rust in the tank should have turned dark, and it doesn’t seem so. Try a longer exposure?
Enjoyed that Mike, took me back to my scientific instrument apprentice tool making days in the 60’s. As a matter of interest why didn’t you machine the flange flat? (May have needed the o ring groove machining too)..🇬🇧
Because bending the flanges back also improves the roundness of the throttle slide bore.
That’s a great question Neil. We did talk about putting the carburetor on Bob’s surface grinder, but he said it would take quite a while to set up (to make it completely level) and also we were a bit nervous about damaging the lips around the flange as they are already pretty weak. Yes, I agree with Dave below that the other benefit was that using this jig did actually help with the roundness of the bore. Best wishes, Mike
As a rule I hold skilled machinists and the Sixteen Men of Tain in high regard.👍🏼