[Martin27]

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[Martin27]

Just started to write about the same as Brian last wednesday, but run away to finnish some work in the middle of the process and didn’t get back to it until today. I would just add one story of one friend who was restoring Ariel, I think it could be back in 70’s, he bought the bike from the first owner and thought it’s weirs the bike is chrome plated, just a handlebars were nickel plated. Buyer wanted different type of the handlebars than were standard, but this was only nickel plated on the stock.
I’m also often trying to find the period pictures or the pictures of the bikes in untouched original condition. I think nice pictures are of this 1929 Tourer sold at bonhams:
https://www.bonhams.com/auctions/19768/lot/286/
Of course, always could be some parts changed, modernized etc, but still very good source of the informations, I think.
All the best,
Martin

[Martin27]

Hi Paul,

looks like very nice work, I’m looking forward to see the pictures of the finished bike and some report from the test rides.
Btw, where did you buy the plain mudguards? Looks good.

All the best,

Martin

[Martin27]

Hi,

thanks, I checked some web sites, so my friend ordered the knob and is producing plates, so his bike should be ready for a spring 🙂

Thanks, best regards,

Martin

[Martin27]

also always use to upload photos strait to the forum. just hope it doesn’t automatic upload through the photobucket? I don’t know this application.

[Martin27]

Hi Bob,

no problem, I think John’s drawings will be good. Thanks a lot.
Btw, it would be interesting to see how you developed your manifold, pipe and silencer, so if you have some picture, it could be great to see it.

Thanks,

Martin

[Martin27]

Why Scott and Velos? Well, Scott and Velocettes has both TT right in the name of the company. Both owned by Matt Holder. If you know eatly Velo two strokers, seems almost like air cooled half of the Scott engine. And both companies had very progressive design. Easy to find answer 🙂
I would take CoTTon to my garage as well, just amazing frame… will see what the future will bring.
Martin

[Martin27]

Hi Bob,

perfect, thanks a lot for all informations. Just last question, is important the length of the tubes between the cylinders and coffee pot? I don’t remember exact lenth from the drawings, by they’ll be bit longer than 1929/30. Pipes has the length by the John Underhill drawings, so hope this should be fine.

Thanks, best regards,

Martin

[Martin27]

Hi Bob,

thanks for the answer. Ok, as I thought, so little bit of work extra 🙂

One more think, how big influence has the final pipes? I made the coffee pot and the pipes by original drawings by John Underhill, there are two pipes, each 32 mm OD. This make 29,6 mm inner diameter (space 688 mm2) with short pipes at the coffee pot on which are the pipes mounted with ID 27 mm (572 mm). Is this enough? Just thinking if there is Ok to have pressure, what the stream in the coffee pot could do, if it’s going out from both tubes or if the pressure doesn’t allow to split the gas to both tubes and each cylinder is going to one pipe? There could be solution to remake the short pipes going out of the coffee pot to outside mounting of the pipes, so there could be at least 29,6 mm diameter and not smaller.

On the drawings are also overlaps of the exhaust pipes inside of the coffee pot. In my original product, I made it as it’s on the drawing. I thought it has probably some influence. Is it correct if the pipe inside is ending by strait cut or should it be cut together with the inner surface of the coffee pot?

Thanks a lot, best regards,

Martin

[Martin27]

So, after some time here is a bit more visible progress of the bike. Scott is finally on the wheels and waiting to get reconditioned engine.
Martin

[Martin27]

Hi Leif,

there are also 3 parts of Scott selection. I have to get my copies as well, still wasn’t lucky. I guess you have already The book of Scott and Scott technicalities.

Best regards,

Martin

[Martin27]

Well, this seems to be point. By my counting I should have 53 teeth, so I have to change mine as well. In my stock is 48 and 50 only. I will need 49 teeth in the future for my little 1923 Velocette two stroker, but in this case I should be almost Ok with one of those two. Any info about someone producing drive wheels welcome.
Thanks, best regards,
Martin

[Martin27]

Hi Chris and Leif,

ok, sounds perfect, so I just go to take my calculator. Hope I didn’t forget the math since the school, it’s already some time.
I created some autocad drawings to make both, drive brackets and the drive wheel holder. Standard holder of the cowey is for a bit smaller hubs, so I had to create “in between” wheel attached to the sprockets holes and into the outside ring threads to attach the cog wheel it self. Same with the drive bracket. I made it in two parts and will drill exactly by the dimension on the bike. If you are not in a hurry, I will make the pictures when I will finish the work and I could send you my drawings, you will see if you like it and if you use it as it is or if you need longer bracket.

Thanks, best regards,

Martin

[Martin27]

Just going through the old Yowls as well and fount another interesting person. In Volume 3 No.4 (March 63) is the Czechoslovak painter Kamil Lhoták on his 1926 Super Squirrel. He was very interesting person, one of the first people interested in vintage vehicles already back in the 20’s (even made his own magazine, all drawn by hand in one example only). He was painting old motorcycles, cars, planes, old airports, balloons. And of course was riding motorbikes. He had at least two or three Scotts. For sure this 26 Super Squirrel, there is the photo and notes of the TT Rep and in the National Technical Museum is 1926 Flying Squirrel which was the gift of his friend, Dr. Mares (who had Scott as well and was making the trips with Kamil Lhotak), but Kamil Lhotak’s son says this was his fathers bike as well. Well, hard to say now, but still very nice to find Kamil Lhotak there.

[Martin27]

Hi Jeff,
just fount the article, thanks for the tip.
Best, Martin

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