Julian's Scrambler build "Post 1"

[metalflake11]

I have said it before, and I will say it again,............Amazing! Any chance of a warts and all video of the first time attempt at starting? Didn't Porsche nikosil bores years ago? 1970's/80's? The only thing I don't like is the sealer you have coated inside the engine with. Clearly you have faith in your prep work to make it 'stick', but it would always be in the back of my mind that just maybe a bit had come loose. I am sure it will not in your case because you are a professional engineer and not a purveyor of gimmicky tat!
As for S.R.M. I am not in the least surprised you are impressed with them, personally, I don't know why people go anywhere else. Other than price they can't be beaten, and there is always a reason for that. Take pressure relief valves for example, they are dearer from them, but I know of two good engines that have gone for a burton due to cheaper copies being fitted, and one of them is mine! I fitted it because it came with the bike (750 Bonnie) and unlike S.R.M. ones it can't have been tested before it was sent to the customer. I must admit I do have an allegiance to them.............it's twenty odd years of fault free riding!

[JulianM]

Hi there,

I do understand your reluctance to embrace internal coatings etc but I have found prep to be everything once a good sealer is found.

We paint the internals of every single engine that we build here and meticulously clean the surfaces first so you "almost" don't need it. However it is nice to seal any porosity and any last tiny dirt particle from causing trouble.  To date we have never seen any paint come loose even after 10 years or so of use and even on Methanol burners!  I did some tests long ago with a painted part in petrol and it's still there on the shelf looking good and soacked in petrol, some 5 years later!     To be honest it's also a little bit of showmanship, it looks extremely nice when a customer comes in and sees how clean and nice their engine is, even on the inside!  Makes me feel all warm and fluffy inside  ;o)

Julian

[metalflake11]

As you say Julian, preparation is the thing, you clearly have faith in your prep! Sadly, a lot of so called professional engineers can't be trusted to pump a tyre up properly, never mind something as critical as that. My point was not so much the quality of the coating correctly applied, but the quality of the person who did it. There are very few people I would trust to do it, you would be amongst those I did trust!

[andy2565]

it made me think when i first saw the pictures the other day about using it inside some porous J.A.P crankcases.I read the tech sheet which states its for use on the inside of machines and engines,but doesnt say that its resistant to castrol r40 or methanol,i take it you have'nt had any problems with the dope engines you've done ?,how did you mask the areas where you didnt need it ?,or did you machine it off ?cheers andy  

[metalflake11]

You could use the old red hermatite without any prep. That bloody stuff would never come off!

[JulianM]

Hi Andy,

Yes, I would strongly reccomend it for that use!

We run 90/10  Methanol Toluene and if that won't remove it, well it is ok with me  ;o)
We use either R40 or M  which is R40 but modified for Methanol use.  No problems.

Generally I don't mask, I just paint carefully!  You can wipe faces off with thinners when it's wet if you need to.

Best regards,
Julian

[Jim]

Hi Julian,
I can't bear the suspense any longer, how is the build going?

[JulianM]

Hi Jim,
Been busy on a lot of things including the BSA,
Just had a little baby also so the camera was swiped to go to hospital so a little bit of the engine build missing but not anything terribly exciting.
Picked up the paintwork from SRM in Wales on Wednesday and WOW!  Fantastic job!  Have a look.











Front wheel going on this weekend and building up the head etc.
Pistons should be here in about 1 week so then the final parts of the assebly.

Regards,
Julian

[metalflake11]

Hia Julian, that's coming along nicely! Did you meet Heffin the painter at S.R.M.? He's a real nice bloke who's only concern is the finish. I spent a day there working on my engine late last year, and he spent all his breaks discussing my paint job and the tricks he has used in the past applying custom paints, most sprayers like to keep their stuff secret but he is very open about his methods, and he was most kind in his praise of my efforts...... He loves the whole process of spraying and it shows.
He has a trick up his sleeve when it comes to pinstriping that you now benifit from too!
                          mf
Edit: No dynamo? The hole has gone!

[bsa-bill]

one mean looking tank, well done yet again

[muskrat]

Well done Julian, I love the shape and colour of the pin stripes. Is the tank steel or alloy?
No dynamo of corse, will you be putting something on the idler shaft to seal against the bush? I used the dyno hole for my engine breather, drilled holes in the inner cover dyno compartment for the fumes to escape.
Cheers

[chaterlea25]

Hi Julian,
Lookin Good 
I hope thats not an anti wet sumping valve screwed into the engine oil feed ? 

Regards
John

[JulianM]

Hi Guys very nice to see you are all paying attention and keeping me on my toes! 

No Dynamo, Ignition is a Mag and a fancy modern light weight (700g) all singing and dancing battery for the lights if/when used.

Have the usual breather arrangement and cork seal but nothing on the outer side of the idler shown in the pics.  My reckoning is that as it's only splash fed it isn't going to pressurize the dynamo drive housing and at worst it can "maybe" fill the cavity with oil and flood the same bearing that feeds it, if oil comes out that way then it will then go back that way due to a greater "head"  Think it will be ok unless I'm mistaken of course 

Wet sumping valve? NO! Not anywhere! I used the ss housing that you can see but even removed the internal ball that seals against the new pump. All internals removed and I will be fitting a ball valve that interferes with the kick start when in the off position for when not running.  Really don't like non return valves in comp/performance type engines.

Heffin.  Yes, what a nice bloke!  in fact I found all the guys that I met at SRM to be really interested in their company and helpful to the extreme!  SRM will go far with guys like that and probably the reason they have so far!

Off to play with my new bits now! 

Julian

[metalflake11]

Heffin.  Yes, what a nice bloke!  in fact I found all the guys that I met at SRM to be really interested in their company and helpful to the extreme!  SRM will go far with guys like that and probably the reason they have so far!
As the regulars on here know, I am a massive fan of theirs, and they will love what you are doing with this project. Keep them posted, they will appreciate it. When they first set up in Aberystwyth they did lots of bizzare stuff just for the fun of it, with a bit of R&D thrown into the mix.
                    mf

[a10 gf]

Julian, great work done on the parts. & am looking forward to the 1st reports of firing up the engine, remember to have the video cam ready!