Hi it's me again: though the paint job looks good, I always used cellulose rather than synthetic paint. At the rear of the tank, as you said, it looks like the tank has rusted thin from the inside! The best way to sort it out, would be to use a liquid, white tank sealer. Using a razor to cut round the filler cap, to get rid of the flaky paint. If you can do this by cutting towards the hole, then remove both taps, plug the holes with threaded bolts. Make a cap ready for the filler hole, then pour in the tank sealer. It should be the viscosity of double cream. With the filler unplugged, rotate the tank so that you cover all of the internals. Then make sure the rear end of the tank is well covered, now seal the filler hole, before finishing off, by turning the tank upside down. Leave for a few minutes, then remove the filler plug & set the tank down on the bench. Leave the tank open to dry. Hope this was helpful, as custodians we need to keep these fine classic bikes in tip top condition. 🇬🇧

@BSAPowerSet

6 ай бұрын

Thanks Chris and that’s exactly what I did with the tank as you’ll see in a later video. Cheers.

Brilliant job Angus you should be very proud of a good job very well done 👍🏼 first class 👍🏼

@BSAPowerSet

4 жыл бұрын

Many thanks Jan - appreciated.

Beautiful rebuild, I like the steady pace of your video, first run of any rebuild is a religious experience, are we sad, nope, this is kinetic art, aura experience and just plain cool. Thats sounds so healthy well done sir you cant buy that built it myself got it 100% feeling wow brilliant

@BSAPowerSet

3 жыл бұрын

Very many thanks Graham for the interest and the kind comments. Yes I'm pleased with how it's turned out. Had some problems since which you might not have viewed yet, but all resolved now. Thanks again.

Sounds real punchy but smooth, look fwd to proper road test Angus, would scrape back that paint from the filler neck lip to stop it creeping

@BSAPowerSet

4 жыл бұрын

Cheers thanks yes looking forward to a longer ride out in the country soon - just wanted to catch the weather yesterday for a quick go. Thanks for suggestion - yes will tidy up that neck once dried out.

nice job Angus and the BSA sounds like a new one.

@BSAPowerSet

4 жыл бұрын

Many thanks Peter - appreciated.

Hi Angus, lovely machine. I had the same thing happen to the fuel tank on my 71 A65L around the cap, it was the ethanol in the fuel. In NZ BP made a 98 fuel which I converted to thereafter. I also used POR 15 tank sealer on the inside and was never a problem with leakage. My previous tank did leak and had been repaired 3 times so I found a good clean one after a few year search. I also used a Triumph Tiger 750 tank for touring in those few years. Your Bandit & 2 Fury look amazing by the way

@BSAPowerSet

3 жыл бұрын

Thanks for the comment and interest Robert. Very similar experiences then with the tank. The sealer seems to be working very well - no further problems. Thanks also for compliment.

Awesome video 👍🏾💯

@BSAPowerSet

4 жыл бұрын

Many thanks but it should have been better if I'd gone out into the country like the vid on the R3 from last year. Anyhow it meant we caught the tank issue early so every cloud has a silver lining. More riding videos to come once we sort the tank issue.

Hi Angus, nice job - well done ! Chatted to you about Rickman Interceptors at Beezumph last year, hope to see you next year. Roddy

@BSAPowerSet

4 жыл бұрын

Hi Roddy - thanks for the interest and comment. Yes I remember - indeed hope to get back to normal next season but looking to at least get some riding in now through the countryside.

Great looking bike . .

Nice to hear it on the road,hope it's an easy fix on the petrol leak...

@BSAPowerSet

4 жыл бұрын

Thanks Matt yes fingers crossed.

@matthewharmer1656

4 жыл бұрын

Should the petrol cap have a cork seal on it,looks like a rubber seal on the video??

@BSAPowerSet

4 жыл бұрын

Hi Matt - yes originally it would have - this is a pattern replacement; however, I'm in favour of the rubber seal for now as I think it will seal better than cork as long as the rim is not uneven or pitted. The issue with the paint lifting there was because the paint extended over the lip into the neck. I've now cleaned the rim up up and will seal the paint line which will now be on the exterior of the seal.

Brilliant!!Angus !

I removed the paint from the lip of the gas tank where the gas cap seals and it stopped leaking gas down the center of the tank and out the back where yours leaks.

@BSAPowerSet

9 ай бұрын

Thanks for the interest and comment. Yep I agree that's a wise thing to do. When I lined the tank I made sure the lining material layer went right up to and slightly over the lip of the filler neck. My tank was leaking from inside at the back though, not from running down from the filler cap.

Sounds just great.

@BSAPowerSet

4 жыл бұрын

Thanks Roy yep running well. Looking forward to a longer test now.

Sounds as sweet as a nut, you have done a cracking job. Must be down to all that oil tank dipping!!!!!!!!!!!!!

@BSAPowerSet

2 жыл бұрын

Many thanks David.

So sorry about that beautiful paintwork. The tank is so handsome, giving the bike a lean timeless look. Best wishes for finding a solution.

@BSAPowerSet

4 жыл бұрын

Thanks Mac. It's not bad and sealer on the way. I do have a spare tank in factory paint - very tempting to fit but we'll see.

Excellent.

@BSAPowerSet

4 жыл бұрын

Many thanks.

beautiful Bike ..

@BSAPowerSet

4 жыл бұрын

Many thanks Larry and for the interest. Hopefully it’ll be running as good as it looks soon - see subsequent videos.

@LarryBees

4 жыл бұрын

@@BSAPowerSet working my way through ..Great Stuff !! had 2 bonnies 140s years ago

@BSAPowerSet

4 жыл бұрын

Thanks again Larry. I bought a T140D Bonnie brand new in 1978.

I suppose it’s a bit early to tell but does the longer stoke engine feel different from the 650. Also with regards to the petrol I always use Esso Super as it does not contain any ethanol.

@BSAPowerSet

Жыл бұрын

Hi Red thanks for the interest and comment. I hadn’t ridden an A65 for a long time but this A70 will feel a lot different anyway as it’s gearing has been lowered by a larger rear sprocket which must have been done when it was semi chopperised in the late 70s. Safe to say that it wants to go like hell but I think I’ll have to up the gearing at some point. It’s a raw animal compared to the Rocket Three.

Hi Angus, great to see her run so well straight out of the blocks. Paint lifting is a pain to deal with. I am surprised how quickly it is wrinkling around the filler cap. I hope the paint damage at the rear is just a spillage but it does look like that is fuel getting under the paint rather than just on the surface.

@BSAPowerSet

4 жыл бұрын

Thanks Howard. Yes I fear the worst re the rear damage but it's been caught early and hasn't worsened so will investigate and probably seal it. I've already tidied up the filler cap lip and will use a smear of epoxy to ensure that doesn't spread. It wasn't so bad once it dried out.

Really sorry to see the tank.But as you said.I am really chuffed for you.

@BSAPowerSet

4 жыл бұрын

Thanks Sam - appreciated. Tank’s not bad at all - it’ll get sorted once the sealer arrives.

She sounded sweet….

@BSAPowerSet

4 ай бұрын

Indeed until the problems began about four miles down the road. All sorted now as you may see in later videos.

Very nice! Sounds a bit deeper and quieter than my A65. Yes they are cold-blooded. I’ve experienced misfiring when cold but clears up when warm . You’ve done a nice job on the restoration. I’ve often thought of restoring mine but it’s all original (except for the wiring harness) with 5,500 miles. I notice you have other nice models in your garage. Keep up the good work 👍🏻.

@BSAPowerSet

4 жыл бұрын

Many thanks Tim - most kind. You must keep yours original if you can - that was impossible with my A70 but it's what I've done with the show Fury and I'm proud of that.

Engine sounds very sweet Angus, but I was gutted when I saw your tank. Unfortunately it was inevitable as these US style tanks are notorious for leaking at the seams and always adjacent to the square section of the tunnel down the middle, either at the bottom or at the top or both. I could never understand why the BSA tanks were made this way whereas the Triumph OIF equivalent were rounded. You could try a tank liner, but I've never had one that was a permanent repair. So after several repair attempts and many resprays on different tanks I decided to go Indian for my 71 Firebird. Not a perfect copy by any means but made from thicker gauge metal so seems more robust. Many miles and no leaks. I do have an original tank spayed up and ready to go for my A70 but I darn't put fuel in it even though I silver soldered the seams where I expect it to leak.

@BSAPowerSet

4 жыл бұрын

Thanks for the comment and info - I wasn't aware that there is a known issue with these tanks. I am already thinking of lining it - it's worth a shot I think if the issue isn't too bad when I investigate. I also have a spare tank in factory unfaded original paint in fantastic condition with just a minor scratch but I'm loathe to use that as I use it for a paint match and also I would hate to think that I might damage that if it's leaking. Anyhow we've caught the problem early on the short run so all still recoverable :)

Is that a Pushrod Engine?

@BSAPowerSet

Жыл бұрын

Yes Patrick. Thanks for the interest.

Looks and sounds great. Currently restoring an A70 I got from Baxter Cycle. I very nearly bought the bike you got from Yeomans but got the chance of a Mark 1 Rocket 3 and 69 Bonneville both for restoration and pulled out of the deal.

@BSAPowerSet

4 жыл бұрын

Thanks Colin. Understood why you pulled out of the Yeomans deal but did me a favour lol. Best wishes with your restoration.

Its also ,now, always essential to carburete and time pre 85 engines with the chemistry of modern fuels in mind . New pump fuel injection engines atomise the mixture perfectly so can run leaner without overheating and advance without lead . BSA engines ran 101 octane with lead to lower the knock pressures/temperatures etc so getting one to run perfectly now , on modern fuel requires some serious adjustments . It simply is not the same stuff chemically . Do you know what the Compression ratio is ? It could be as high as 10.5/ 1. Exhaust valves and seats simply won't last under extended load on lead free pump petrol with factory ignition setting and a high compression ratio. Worth researching classic engine fuel additives as its pretty likely that prolonged running without any 'octane booster (lead additive) will wreck the head . Would be a shame to wreck all your excellent work so far .Maybe different material exhaust valves and seat inserts are needed and certainly a hotter grade spark plug. Simply running the carbs a bit rich achieves nothing . Peace etc Jonny

@BSAPowerSet

4 жыл бұрын

Thanks again Jonny. Engine compression ratio is 9.5:1 so agree that even with premium unleaded and the fact that even in the old days, these engines were prone to pre-ignition, then this won't solve the problem and that timing and mixtures will require tinkering with as you've described previously.

That leaking tank malady is nasty as "servodyne" pointed out. Hopefully, you can reline the tank or find an NOS one to replace it (get our yer wallet)--damn shame after the gorgeous paint job which I'm sure was not cheap. I wonder if BSA may have offered a factory-built oil cooler upgrade since twins do run hot and that addition would help the engine. I had a Lockhart on my '76 Bonneville and it worked extremely well although ungainly by today's standards. That lesson was not lost on today's Royal Enfield Interceptor, nor on the 1970 version.

@BSAPowerSet

4 жыл бұрын

Thanks for the comment John. I have a very good NOS tank in factory paint but am going to have a go at lining existing first. I’m not aware of any factory oil cooler option for the twins. I used to have a Rickman Interceptor myself and fitted the factory oil cooler to that. I think it was an option on original factory Interceptors up until last year 1970 when it became standard fitment.

@autodidact537

4 жыл бұрын

@@BSAPowerSet Hi Angus, The KZread channel "The Mighty Garage" on his May 3 video took the petrol tank from his Norton Manxman, then after pressurizing it with air he used a small paint brush saturated with soapy water he then dabbed all the seams & other possible leak sources. This method revealed even the tiniest leaks wherever the bubbles appeared.

My BSA Bantam turbo would blow this thing into the weeds!!!

@BSAPowerSet

4 жыл бұрын

Perhaps at the moment Martin lol but not when she’s run in and the current minor issues sorted. Maybe. Depends on the 0-60 of the bantam and its cc and turbo model.

@martinburke362

4 жыл бұрын

@@BSAPowerSet mines a special Bantam the motor drives the turbo JUST!!!

Bummer about the paint job. I've had good luck with POR15 liner kit. Close to 20 years in my Bonneville with e10 in it every day. Looks like new. Follow the directions to the letter.

@BSAPowerSet

4 жыл бұрын

Thanks for the comment and recommendation Mitch.

Is it not the Sunday the 10th?

@BSAPowerSet

4 жыл бұрын

lol yes it is Roy - long weekends get me confused!

Green oil - is it Duckhams? Maybe petrol dribbled out the filler neck and along the seam (under the aluminium cover). 🤞 there's no hole in it.

@BSAPowerSet

4 жыл бұрын

Hi Thomas - it’s not Duckham’s but just labelled as a classic oil (20/50). Yea I’m now wondering if I dripped petrol somehow - hopefully we’ll see when I investigate and take the Ali strip off.

@peterfallows6802

4 жыл бұрын

@@BSAPowerSet -alloy ❔lol

@BSAPowerSet

4 жыл бұрын

Indeed Peter and not a typo from where I originally hail from lol

Well, thats the suspension tested

@BSAPowerSet

4 жыл бұрын

Yep Phil I knew there'd be a positive use for road humps.

This is the link for Allen Millyard’s Kawasaki tank video where he comments on the potential disastrous effects of ethanol! kzread.info/dash/bejne/aWd1stuEqtuYmdo.html

@BSAPowerSet

4 жыл бұрын

Thanks again Harry. I forgot to mention in my recent reply to your last comment that I’m going to seal the tank first before attempting your technique to try and repair the lifted paint. I’ve already cleaned the filler lip and that’s fine. It’s just a good job that I only went on a short run and therefore didn’t notice it miles from home! Thanks again.

Hi Angus, bike is looking and sounding great...but I am sorry to hear about your paint bubbling up on the tank, so soon. I have the same issues with mine but it didn’t manifest until a few months. I was really disappointed as it was a real nice paint job. I have managed to kind of save it, it hasn’t got any worse. I pricked the bubbles and managed to massage the paint back down onto the tank, flat. I’ve made a quick video kzread.info/dash/bejne/maKM1JualpjFh5c.html It’s not brilliant but it’s not bad enough yet to consider stripping it all and attempting to seal the tank. Actually as I’m writing this, I forgot to mention in the video, at some stage I tried injecting an adhesive under the bubbles in attempt to get the skin of the paint to stick back down onto the metal. It seems to have worked to a degree.

@BSAPowerSet

4 жыл бұрын

Hi Harry - fantastic info as that is exactly the process I’m going to attempt as the area has remained relatively small and has not worsened. Many thanks for this and for the video - most kind as always.

What a shame about the tank hopefully nothing too serious 👍

@BSAPowerSet

4 жыл бұрын

Thanks Stephen - yes not bad caught it early and it hasn't worsened since so sealer on the way.

What is the blurred patch at the top?, spoilt the vid a bit.

@BSAPowerSet

4 жыл бұрын

Hi Davey and thanks for comment. I originally intended to film some footage out in the country but had to cut short the trip when I released I hadn't fitted the number plate so I only caught footage in the neighbourhood so thought it best to blank out sensitive info. There'll be another video once I sort out the tank issue.

Beautiful A70, hope you remove the paint from around the filler cap, as it will end up in the pilot-jet!

@BSAPowerSet

6 ай бұрын

Cheers Chris many thanks. Yea I’ve sealed the tank right up to the rim of the filler 👍

Bike sounds like its gonna throw a rode...lol... Ive never owned a bsa tho.. But been wanting 1 for forever.. Hate harleys and the harley club... Everyone has one 🙄... Been looking at lightnings... Like the look

@BSAPowerSet

2 жыл бұрын

Thanks for the interest and comment. It was the head gasket blowing due to a bad thread on a head stud - see follow up vids.

be a good video but what you messing about with the dip stick for? if you can see oil near the top of the frame its ok, as your messing about with oil level too much, spinning the video out. its a thumbs down from me m8.

@BSAPowerSet

7 ай бұрын

Fair enough Paul and thanks for visiting and the feedback. You’ll always get warts and all from me - I don’t over edit these.